Resistors (results: 2443)

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Resistance
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Body dimensions
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Leads dimensions
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Case
Case
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Operating temperature (range)
Number of resistors
Resistor type
Terminal pitch
Thick film chip resistor; smd; 2512; 0.05R Thick film chip resistor; smd; 2512; 0.05R; 1%; 1W; operating temperature: -55°C~125°C
WSL2512R0500FEA RoHS || Thick film chip resistor; smd; 2512; 0.05R smd2512
Manufacturer:
Vishay
Manufacturer part number:
WSL2512R0500FEA RoHS
Case style:
smd2512
Datasheet
In stock:
600 pcs.
Quantity of pieces 3+ 20+ 100+ 500+ 2000+
Net price (EUR) 0,4092 0,2273 0,1795 0,1629 0,1577
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Packaging:
2000
Quantity (multiple 1)
0,05 Ohm 1W 2512 cal 6432 mm 1% SMD -55°C ~ 125°C
Cement resistor; axial; 6.8R Cement resistor; axial type; 6.8R; 5%; 5W; THT; dimensions: 22x10x9mm
CR-L 6.8R 5% 5W RoHS || Cement resistor; axial; 6.8R Rys.REZCE5W
Manufacturer:
TCO
Manufacturer part number:
CR-L 6.8R 5% 5W RoHS
Case style:
Rys.REZCE5W
 
In stock:
1090 pcs.
Quantity of pieces 5+ 10+ 70+ 500+ 3000+
Net price (EUR) 0,2067 0,1436 0,0691 0,0505 0,0459
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Packaging:
10/500/3000
Quantity (multiple 1)
6,8 Ohm 5W 22x10x9mm 5% THT
Carbon film resistor; 390R Carbon film resistor; 390R; 5%; 0.125W; 0204; body dimensions: 1,8x3,2mm; leads dimensions: 0,45x28mm
CF 1/8W 390R J RoHS || Carbon film resistor; 390R Rys.REZ0204
Manufacturer:
TCO
Manufacturer part number:
CF 1/8W 390R J RoHS
Case style:
Rys.REZ0204
Datasheet
In stock:
39299 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0147 0,0058 0,0028 0,0020 0,0018
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Packaging:
5000/50000
Quantity (multiple 50)
390 Ohm 125mW 1,8x3,2mm 0,45x28mm 5% THT
Thick film chip resistor; smd; 0805; 1.2R Thick film chip resistor; smd; 0805; 1.2R; 1%; 0.125W; operating temperature: -55°C~125°C
RC0805FR-071R2L RoHS || Thick film chip resistor; smd; 0805; 1.2R smd0805
Manufacturer:
THUNDER
Manufacturer part number:
RC0805FR-071R2L RoHS
Case style:
smd0805
Datasheet
In stock:
5280 pcs.
Quantity of pieces 100+ 300+ 1000+ 5000+ 20000+
Net price (EUR) 0,0122 0,0055 0,0028 0,0017 0,0014
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Stock available
While the stock lasts
Packaging:
5000/50000
Quantity (multiple 100)
1,2 Ohm 125mW 0805 cal 2012 mm 1% SMD -55°C ~ 125°C
Thick film chip resistor; smd; 0402; 33R Thick film chip resistor; smd; 0402; 33R; 1%; 0.063W; operating temperature: -55°C~125°C
RC0402FR-07 33R RoHS || CR10-33R0-FK RoHS || Thick film chip resistor; smd; 0402; 33R smd0402
Manufacturer:
TCO
Manufacturer part number:
RC0402FR-07 33R RoHS
Case style:
smd0402
 
In stock:
1490 pcs.
Quantity of pieces 200+ 1500+ 10000+ 20000+ 100000+
Net price (EUR) 0,0049 0,0011 0,0005 0,0005 0,0004
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Packaging:
10000/100000
Quantity (multiple 100)
33 Ohm 0,063W 0402 cal 1005 mm 1% SMD -55°C ~ 125°C
 
Manufacturer:
ASJ
Manufacturer part number:
CR10-33R0-FK RoHS
Case style:
smd0402
 
In stock:
100000 pcs.
Quantity of pieces 100+ 500+ 2000+ 10000+ 50000+
Net price (EUR) 0,0065 0,0020 0,0010 0,0007 0,0006
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Packaging:
10000/100000
Quantity (multiple 100)
33 Ohm 0,063W 0402 cal 1005 mm 1% SMD -55°C ~ 125°C
Carbon film resistor; 33R Carbon film resistor; 33R; 5%; 0.25W; 0207; body dimensions: 2,3x6,5mm; leads dimensions: 0,43x25mm
CF 1/4W 33R J RoHS || Carbon film resistor; 33R Rys.REZ0207
Manufacturer:
TCO
Manufacturer part number:
CF 1/4W 33R J RoHS
Case style:
Rys.REZ0207
Datasheet
In stock:
30700 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0157 0,0061 0,0030 0,0022 0,0020
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Packaging:
5000/50000
Quantity (multiple 50)
33 Ohm 0,25W 2,3x6,5mm 0,43x25mm 5% THT
Thick film chip resistor; smd; 2010; 330R Thick film chip resistor; smd; 2010; 330R; 5%; 1W; operating temperature: -55°C~125°C
RC2010JK-07 330R RoHS || RC2010JR-07330RL RoHS || Thick film chip resistor; smd; 2010; 330R smd2010
Manufacturer:
THUNDER
Manufacturer part number:
RC2010JK-07 330R RoHS
Case style:
smd2010
Datasheet
In stock:
690 pcs.
Quantity of pieces 10+ 50+ 200+ 1000+ 4000+
Net price (EUR) 0,0684 0,0261 0,0149 0,0108 0,0098
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Packaging:
4000
Quantity (multiple 10)
330 Ohm 1W 2010 cal 5025 mm 5% SMD -55°C ~ 125°C
 
Manufacturer:
THUNDER
Manufacturer part number:
RC2010JR-07330RL RoHS
Case style:
smd2010
Datasheet
In stock:
4000 pcs.
Quantity of pieces 10+ 50+ 200+ 1000+ 4000+
Net price (EUR) 0,0684 0,0261 0,0149 0,0108 0,0098
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Packaging:
4000/8000
Quantity (multiple 10)
330 Ohm 1W 2010 cal 5025 mm 5% SMD -55°C ~ 125°C
Resistor network; 470kR Resistor network; SIL; 9 pins; 8 resistors; 470kR; 2%; 0.125W; operating temperature: -55°C~155°C; max. working voltage: 100V
RAA09474GFN RoHS || Resistor network; 470kR Rys23.1e
Manufacturer:
TCO
Manufacturer part number:
RAA09474GFN RoHS
Case style:
Rys23.1e
 
In stock:
3740 pcs.
Quantity of pieces 5+ 30+ 200+ 1000+ 5000+
Net price (EUR) 0,1936 0,0773 0,0450 0,0376 0,0352
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Packaging:
200/1000
Quantity (multiple 1)
470 kOhm 125mW 0 100V N/A 2% THT -55°C ~ 125°C 8
Metal oxide resistor; 180R Metal oxide resistor; 180R; 5%; 1W; 0309; 300V; 350ppm/°C; THT; body dimensions: 3,2x9mm; leads dimensions: 0,5x25mm
MOF 1WS 180R J RoHS || Metal oxide resistor; 180R Rys.REZ0309
Manufacturer:
TCO
Manufacturer part number:
MOF 1WS 180R J RoHS
Case style:
Rys.REZ0309
 
In stock:
3690 pcs.
Quantity of pieces 10+ 50+ 300+ 2000+ 12000+
Net price (EUR) 0,0641 0,0246 0,0128 0,0098 0,0092
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Packaging:
2000/12000
Quantity (multiple 10)
180 Ohm 1W 3,2x9mm 350ppm/°C 0,5x25mm 300V 5% THT
Thick film chip resistor smd; 0603; 3.3R; Thick film chip resistor smd; 0603; 3.3R; 1%; 0.1W; operating temperature: -55°C~125°C
RC0603FR-073R3L RoHS || Thick film chip resistor smd; 0603; 3.3R; smd0603
Manufacturer:
YAGEO
Manufacturer part number:
RC0603FR-073R3L RoHS
Case style:
smd0603
Datasheet
In stock:
53000 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0161 0,0063 0,0030 0,0022 0,0020
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Packaging:
5000/50000
Quantity (multiple 50)
3,30 Ohm 0,1W 0603 cal 1608 mm 1% SMD -55°C ~ 125°C
Carbon film resistor; 33R Carbon film resistor; 33R; 5%; 0.25W; 0204; body dimensions: 1.8x3.2mm; leads dimensions: 0,45x28mm
CF 1/4WS 33R J RoHS || Carbon film resistor; 33R Rys.REZ0204
Manufacturer:
TCO
Manufacturer part number:
CF 1/4WS 33R J RoHS
Case style:
Rys.REZ0204
Datasheet
In stock:
24000 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0155 0,0061 0,0029 0,0021 0,0019
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Packaging:
5000/50000
Quantity (multiple 50)
33 Ohm 0,25W 1.8x3.2mm 0,45x28mm 5% THT
Metal oxide resistor; 200R Metal oxide resistor; 200R; 5%; 1W; 0309; 300V; 350ppm/°C; THT; body dimensions: 3,2x9mm; leads dimensions: 0,5x25mm
MOF 1WS 200R J RoHS || Metal oxide resistor; 200R Rys.REZ0309
Manufacturer:
TCO
Manufacturer part number:
MOF 1WS 200R J RoHS
Case style:
Rys.REZ0309
 
In stock:
5347 pcs.
Quantity of pieces 10+ 50+ 300+ 2000+ 10000+
Net price (EUR) 0,0641 0,0246 0,0128 0,0098 0,0092
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Packaging:
2000/10000
Quantity (multiple 10)
200 Ohm 1W 3,2x9mm 350ppm/°C 0,5x25mm 300V 5% THT
Thick film chip resistor; smd; 0402; 33R Thick film chip resistor; smd; 0402; 33R; 5%; 0.063W; operating temperature: -55°C~125°C
RC0402JR-07 33R RoHS || Thick film chip resistor; smd; 0402; 33R smd0402
Manufacturer:
TCO
Manufacturer part number:
RC0402JR-07 33R RoHS
Case style:
smd0402
 
In stock:
4220 pcs.
Quantity of pieces 200+ 1500+ 10000+ 20000+ 100000+
Net price (EUR) 0,0037 0,0008 0,0004 0,0004 0,0003
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Packaging:
10000/100000
Quantity (multiple 100)
33 Ohm 0,063W 0402 cal 1005 mm 5% SMD -55°C ~ 125°C
Wire wound resistor; 220R Wire wound resistor; 220R; 5%; 10W; axial body dimensions: 8,52x43,7mm; leads dimensions: 1x35mm
ACS10S 220R0 J RoHS || Wire wound resistor; 220R Rys.REZDR010W
Manufacturer:
ARCOL
Manufacturer part number:
ACS10S 220R0 J RoHS
Case style:
Rys.REZDR010W
Datasheet
In stock:
8 pcs.
Quantity of pieces 1+ 2+ 3+ 4+ 8+
Net price (EUR) 1,1652 0,8733 0,7513 0,6819 0,5551
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Packaging:
8
Quantity (multiple 1)
220 Ohm 10W 8,52x43,7mm 5% Screw Wire-wound
 
Manufacturer:
ARCOL
Manufacturer part number:
ACS10S 220R0 J RoHS
Case style:
Rys.REZDR010W
Datasheet
In stock:
80 pcs.
Quantity of pieces 1+ 5+ 20+ 80+ 400+
Net price (EUR) 1,1652 0,7752 0,6388 0,5814 0,5551
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Packaging:
20/80
Quantity (multiple 1)
220 Ohm 10W 8,52x43,7mm 5% Screw Wire-wound
Fusible resistor; 10R Fusible resistor; 10R; 5%; 1W; 0309; 250V; 200ppm/°C; THT; body dimensions: 3,2x9mm; leads dimensions 0,5x25mm
FRN 1WS 10R J RoHS || Fusible resistor; 10R Rys.REZ0309
Manufacturer:
TCO
Manufacturer part number:
FRN 1WS 10R J RoHS
Case style:
Rys.REZ0309
 
In stock:
2880 pcs.
Quantity of pieces 10+ 50+ 300+ 2000+ 10000+
Net price (EUR) 0,0701 0,0270 0,0140 0,0107 0,0100
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Packaging:
2000
Quantity (multiple 10)
10 Ohm 1W 3,2x9mm 200ppm/°C 3.2x9.5mm 0,5x25mm 250V 5% THT
Carbon film resistor; 510R Carbon film resistor; 510R; 5%; 0.125W; 0204; body dimensions: 1,8x3,2mm; leads dimensions: 0,45x28mm
CF 1/8W 510R J RoHS || Carbon film resistor; 510R Rys.REZ0204
Manufacturer:
TCO
Manufacturer part number:
CF 1/8W 510R J RoHS
Case style:
Rys.REZ0204
Datasheet
In stock:
108400 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0147 0,0058 0,0028 0,0020 0,0018
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Stock available
While the stock lasts
Packaging:
5000/100000
Quantity (multiple 50)
510 Ohm 125mW 1,8x3,2mm 0,45x28mm 5% THT
Thick film chip resistor; smd; 0805; 1.2R Thick film chip resistor; smd; 0805; 1.2R; 5%; 0.25W; operating temperature: -55°C~125°C
WF08P1R2JTL RoHS || Thick film chip resistor; smd; 0805; 1.2R smd0805
Manufacturer:
Walsin Technol.Corp.
Manufacturer part number:
WF08P1R2JTL RoHS
Case style:
smd0805
 
In stock:
32 pcs.
Quantity of pieces 20+ 100+ 400+ 1500+ 7500+
Net price (EUR) 0,0345 0,0125 0,0070 0,0052 0,0046
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Stock available
While the stock lasts
Packaging:
1500
Quantity (multiple 10)
1,2 Ohm 0,25W 0805 cal 2012 mm 5% SMD -55°C ~ 125°C
Thick film chip resistor smd; 0603; 3.3R; Thick film chip resistor smd; 0603; 3.3R; 5%; 0.1W; operating temperature: -55°C~125°C
RC0603JR-07 3R3 RoHS || Thick film chip resistor smd; 0603; 3.3R; smd0603
Manufacturer:
TCO
Manufacturer part number:
RC0603JR-07 3R3 RoHS
Case style:
smd0603
 
In stock:
32800 pcs.
Quantity of pieces 200+ 1000+ 5000+ 20000+ 50000+
Net price (EUR) 0,0046 0,0013 0,0006 0,0004 0,0004
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Packaging:
5000/50000
Quantity (multiple 100)
3,30 Ohm 0,1W 0603 cal 1608 mm 5% SMD -55°C ~ 125°C
Cement resistor; axial; 8.2R Cement resistor; axial type; 8.2R; 5%; 5W; THT; dimensions: 22x10x9mm
CR-L 8.2R 5% 5W RoHS || Cement resistor; axial; 8.2R Rys.REZCE5W
Manufacturer:
TCO
Manufacturer part number:
CR-L 8.2R 5% 5W RoHS
Case style:
Rys.REZCE5W
 
In stock:
574 pcs.
Quantity of pieces 5+ 10+ 40+ 110+ 1000+
Net price (EUR) 0,2067 0,1426 0,0797 0,0603 0,0459
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Packaging:
10
Quantity (multiple 1)
8,2 Ohm 5W 22x10x9mm 5% THT
Thick film chip resistor; smd; 2010; 470R Thick film chip resistor; smd; 2010; 470R; 5%; 1W; operating temperature: -55°C~125°C
RC2010JK-07470RL RoHS || Thick film chip resistor; smd; 2010; 470R smd2010
Manufacturer:
THUNDER
Manufacturer part number:
RC2010JK-07470RL RoHS
Case style:
smd2010
Datasheet
In stock:
13000 pcs.
Quantity of pieces 10+ 50+ 200+ 1000+ 4000+
Net price (EUR) 0,0684 0,0261 0,0149 0,0108 0,0098
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Packaging:
4000/20000
Quantity (multiple 10)
470 Ohm 1W 2010 cal 5025 mm 5% SMD -55°C ~ 125°C
Carbon film resistor; 36R Carbon film resistor; 36R; 5%; 0.25W; 0207; body dimensions: 2,3x6,5mm; leads dimensions: 0,43x25mm
CF 1/4W 36R J RoHS || Carbon film resistor; 36R Rys.REZ0207
Manufacturer:
TCO
Manufacturer part number:
CF 1/4W 36R J RoHS
Case style:
Rys.REZ0207
Datasheet
In stock:
49300 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0157 0,0061 0,0030 0,0022 0,0020
Add to comparison tool
Packaging:
5000/50000
Quantity (multiple 50)
36 Ohm 0,25W 2,3x6,5mm 0,43x25mm 5% THT
Wire wound resistor; 330R Wire wound resistor; 330R; 5%; 10W; with heatsink; screwed; dimensions: 20x23x10.5mm
AH 10W 330R J RoHS || Wire wound resistor; 330R Rys.REZDr010WRad
Manufacturer:
TCO
Manufacturer part number:
AH 10W 330R J RoHS
Case style:
Rys.REZDr010WRad
 
In stock:
40 pcs.
Quantity of pieces 1+ 5+ 40+ 200+ 400+
Net price (EUR) 1,1652 0,7752 0,6054 0,5647 0,5551
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Packaging:
40
Quantity (multiple 1)
330 Ohm 10W 20x23x10.5mm 5% Screw Wire-wound
Fusible resistor; 22R Fusible resistor; 22R; 5%; 1W; 0309; 250V; 200ppm/°C; THT; body dimensions: 3,2x9mm; leads dimensions 0,5x25mm
FRN 1WS 22R J RoHS || Fusible resistor; 22R Rys.REZ0309
Manufacturer:
TCO
Manufacturer part number:
FRN 1WS 22R J RoHS
Case style:
Rys.REZ0309
 
In stock:
690 pcs.
Quantity of pieces 10+ 50+ 300+ 2000+ 10000+
Net price (EUR) 0,0701 0,0270 0,0140 0,0107 0,0100
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Packaging:
2000
Quantity (multiple 10)
22 Ohm 1W 3,2x9mm 200ppm/°C 3.2x9.5mm 0,5x25mm 250V 5% THT
Carbon film resistor; 560R Carbon film resistor; 560R; 5%; 0.125W; 0204; body dimensions: 1,8x3,2mm; leads dimensions: 0,45x28mm
CF 1/8W 560R J RoHS || Carbon film resistor; 560R Rys.REZ0204
Manufacturer:
TCO
Manufacturer part number:
CF 1/8W 560R J RoHS
Case style:
Rys.REZ0204
Datasheet
In stock:
70000 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0147 0,0058 0,0028 0,0020 0,0018
Add to comparison tool
Packaging:
5000/90000
Quantity (multiple 50)
560 Ohm 125mW 1,8x3,2mm 0,45x28mm 5% THT
Thick film chip resistor; smd; 1206; 0.1R Thick film chip resistor; smd; 1206; 0.1R; 1%; 0.25W; operating temperature: -55°C~125°C
RC1206FR-070R10L RoHS || Thick film chip resistor; smd; 1206; 0.1R smd1206
Manufacturer:
THUNDER
Manufacturer part number:
RC1206FR-070R10L RoHS
Case style:
smd1206
Datasheet
In stock:
25000 pcs.
Quantity of pieces 20+ 100+ 300+ 1000+ 5000+
Net price (EUR) 0,0512 0,0189 0,0117 0,0085 0,0071
Add to comparison tool
Packaging:
5000/50000
Quantity (multiple 10)
0,1 Ohm 0,25W 1206 cal 3216 mm 1% SMD -55°C ~ 125°C
                                     
Item in delivery
Estimated time: 2025-07-01
Quantity of pieces: 70000
                               
Carbon film resistor; 39R Carbon film resistor; 39R; 5%; 0.25W; 0207; body dimensions: 2,3x6,5mm; leads dimensions: 0,43x25mm
CF 1/4W 39R J RoHS || Carbon film resistor; 39R Rys.REZ0207
Manufacturer:
TCO
Manufacturer part number:
CF 1/4W 39R J RoHS
Case style:
Rys.REZ0207
Datasheet
In stock:
45000 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0157 0,0061 0,0030 0,0022 0,0020
Add to comparison tool
Packaging:
5000/50000
Quantity (multiple 50)
39 Ohm 0,25W 2,3x6,5mm 0,43x25mm 5% THT
Wire wound resistor; 470R Wire wound resistor; 470R; 5%; 10W; with heatsink; screwed; dimensions: 20x23x10.5mm
AH 10W 470R J RoHS || Wire wound resistor; 470R Rys.REZDr010WRad
Manufacturer:
TCO
Manufacturer part number:
AH 10W 470R J RoHS
Case style:
Rys.REZDr010WRad
 
In stock:
6 pcs.
Quantity of pieces 1+ 3+ 10+ 50+ 200+
Net price (EUR) 1,0552 0,7752 0,6221 0,5336 0,5025
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Packaging:
50
Quantity (multiple 1)
470 Ohm 10W 20x23x10.5mm 5% Screw Wire-wound
MMA02040C1003FB300 Vishay Resistor High precision resistor coated type minimelf; SMD; 0204; 100kR; 0.25W; 1%; 50ppm/°C; body dimensions: 1,4x3,6mm; operating temperature: -55°C ~125°C
MMA02040C1003FB300 RoHS || MMA02040C1003FB300 Vishay Resistor Rys.minimelf0204
Manufacturer:
Vishay
Manufacturer part number:
MMA02040C1003FB300 RoHS
Case style:
Rys.minimelf0204
Datasheet
In stock:
298 pcs.
Quantity of pieces 5+ 20+ 100+ 500+ 3000+
Net price (EUR) 0,1146 0,0526 0,0287 0,0214 0,0191
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Stock available
While the stock lasts
Packaging:
3000/9000
Quantity (multiple 1)
100 kOhm 0,25W 1,4x3,6mm 50ppm/°C 200V VISHAY 1% SMD -55°C ~ 125°C
Carbon film resistor; 680R Carbon film resistor; 680R; 5%; 0.125W; 0204; body dimensions: 1,8x3,2mm; leads dimensions: 0,45x28mm
CF 1/8W 680R J RoHS || Carbon film resistor; 680R Rys.REZ0204
Manufacturer:
TCO
Manufacturer part number:
CF 1/8W 680R J RoHS
Case style:
Rys.REZ0204
Datasheet
In stock:
59700 pcs.
Quantity of pieces 50+ 200+ 1000+ 5000+ 20000+
Net price (EUR) 0,0147 0,0058 0,0028 0,0020 0,0018
Add to comparison tool
Packaging:
5000/50000
Quantity (multiple 50)
680 Ohm 125mW 1,8x3,2mm 0,45x28mm 5% THT
Current sense; chip resistor; smd; 1206; 0.10R Current sense; chip resistor; smd; 1206; 0.10R; 1%; 0.5W; 200ppm/°C; operating temperature: -55°C~125°C
CS 1206 0,10R 0,5W 1% RoHS || Current sense; chip resistor; smd; 1206; 0.10R smd1206
Manufacturer:
THUNDER
Manufacturer part number:
CS 1206 0,10R 0,5W 1% RoHS
Case style:
smd1206
 
In stock:
4500 pcs.
Quantity of pieces 5+ 30+ 200+ 1000+ 5000+
Net price (EUR) 0,1122 0,0428 0,0242 0,0200 0,0187
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Packaging:
5000
Quantity (multiple 1)
0,1 Ohm 0,5W 200ppm/°C 1206 cal 3216 mm 1% SMD -55°C ~ 125°C
1    5  6  7  8  9  10  11  12  13    82

Resistors - their functions and parameters

Resistors play a key role in electrical circuits. Firstly, they provide protection, and secondly, are responsible for various functionalities of devices. In our offer, single resistors as well as sets of them can be found. We have products made of various materials. However one thing connects them all, that is the quality, which is guaranteed by the reputation of a manufacturer. Now, let's focus on what resistors are and what they are used for. What are the colours of resistors and what do they mean? This and many more questions will be addressed in the text below. 

What is a resistor?

Basically, resistors are really diverse devices which are distinguished by their construction and parameters. Nevertheless, the task of a resistor is always to limit the flow of the current, that is decreasing the electrical current and voltage. It is worth noting that when it comes to resistors, their application, as a rule, applies to limiting the current and not stopping it completely. However, some resistors in relevant conditions can in fact lead to termination of the current flow in an electrical circuit. 

Classic resistor consist of a resistive material and an insulating layer. Key role in a flow regulation plays of course the resistive material which is mostly responsible for individual parameters of a resistor. What materials are responsible for the resistance? That could be carbon, some kinds of metal, rarely special foil. In our offer you will find resistors with every kind of a resistive material. We offer qualitative wirewound models from, among others, Bochen company, as well as carbon models from TCO company and many more. 

Although the general function that resistor serves in the electrical circuit is always the same, precise actions are various. As a potentiometer it can be used to slightly limit or increase the power in order to e.g. turn down the volume of a television or radio. However as a LED resistor, it can be used to regulate the light intensity, and also prevents the diode from damage caused by too high electrical current and voltage.

How to choose a resistor according to their colours?

We briefly explained what resistor is used for, however the question is how to choose the appropriate one according to the given application?  The key aspect is to learn about parameters of the device. This is the base on which one has to choose a resistor. We offer a wide selection of resistors with diverse parameters in order to meet the expectations of every customer. However we do realise that this may cause problems when it comes to the selection of a relevant device. It is worth noticing here that there are different colours of resistors. More specifically, not of the whole devices but bands that appear on them. The number of bands ranges from 3 to 6, depending on the type of a resistor. Colours of resistors correspond to their values:

  • Resistance
  • Multiplication
  • Tolerance
  • Temperature coefficient of resistance

The most important indicator is without a doubt the resistance. It defines what resistance against the current a given electronic or electrical resistor has. Both too low or too high electrical current and voltage are a problem. When it's too low, the device is not able to function properly. In case of too high values on the other hand, the resistor may be damaged or may result in a malfunction of the device where it is mounted. Choosing an individual device or a set of resistors, one has to take into consideration the tolerance, that is the highest possible deviation of the real value of resistance from the nominal value. Another parameter is the temperature coefficient of resistance, referring to resistance changes affected by the temperature change.

What are the symbols of resistors?

When it comes to resistors, they have both schematic symbols and letter codes. In schematic symbols, the resistor is referred to as a horizontally placed rectangle with two horizontal lines coming from the centre of the left and right side. On the other hand, the code letter for the resistor is “R”. It is worth pointing out that symbols of resistors are always the same, regardless of the parameters and type of a resistor. Should you have any doubts, we encourage you to contact us. We will eagerly help to choose an optimal resistor.