Thick Film Resistors - SMD RCA0201-SR 200 3K3 1% ET7 e3
RCA02013K30FNEDSR
Vishay
1:
Rp2.018
13.980 In Stock
New Product
Mouser Part No
71-RCA02013K30FNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0201-SR 200 3K3 1% ET7 e3
13.980 In Stock
1
Rp2.018
10
Rp605
100
Rp495
250
Rp404
10.000
Rp183
20.000
View
500
Rp349
1.000
Rp312
5.000
Rp238
20.000
Rp165
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
3.3 kOhms
50 mW (1/20 W)
1 %
200 PPM / C
- 55 C
+ 155 C
30 V
0201
0603
0.6 mm (0.024 in)
0.3 mm (0.012 in)
0.23 mm (0.009 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0201-SR 200 47K 1% ET7 e3
RCA020147K0FNEDSR
Vishay
1:
Rp2.018
15.686 In Stock
New Product
Mouser Part No
71-RCA020147K0FNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0201-SR 200 47K 1% ET7 e3
15.686 In Stock
1
Rp2.018
10
Rp605
100
Rp495
250
Rp404
10.000
Rp183
20.000
View
500
Rp349
1.000
Rp312
5.000
Rp238
20.000
Rp165
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
47 kOhms
50 mW (1/20 W)
1 %
200 PPM / C
- 55 C
+ 155 C
30 V
0201
0603
0.6 mm (0.024 in)
0.3 mm (0.012 in)
0.23 mm (0.009 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0201-SR 200 4K7 1% ET7 e3
RCA02014K70FNEDSR
Vishay
1:
Rp2.018
17.531 In Stock
New Product
Mouser Part No
71-RCA02014K70FNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0201-SR 200 4K7 1% ET7 e3
17.531 In Stock
1
Rp2.018
10
Rp605
100
Rp495
250
Rp404
10.000
Rp183
20.000
View
500
Rp349
1.000
Rp312
5.000
Rp238
20.000
Rp165
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
4.7 kOhms
50 mW (1/20 W)
1 %
200 PPM / C
- 55 C
+ 155 C
30 V
0201
0603
0.6 mm (0.024 in)
0.3 mm (0.012 in)
0.23 mm (0.009 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0201-SR 200 4K7 5% ET7 e3
RCA02014K70JNEDSR
Vishay
1:
Rp1.835
20.000 In Stock
New Product
Mouser Part No
71-RCA02014K70JNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0201-SR 200 4K7 5% ET7 e3
20.000 In Stock
1
Rp1.835
10
Rp440
100
Rp367
250
Rp294
500
View
10.000
Rp110
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
4.7 kOhms
50 mW (1/20 W)
5 %
200 PPM / C
- 55 C
+ 155 C
30 V
0201
0603
0.6 mm (0.024 in)
0.3 mm (0.012 in)
0.23 mm (0.009 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0201-SR 200 820R 1% ET7 e3
RCA0201820RFNEDSR
Vishay
1:
Rp2.018
18.786 In Stock
New Product
Mouser Part No
71-RCA0201820RFNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0201-SR 200 820R 1% ET7 e3
18.786 In Stock
1
Rp2.018
10
Rp605
100
Rp495
250
Rp404
10.000
Rp183
20.000
View
500
Rp349
1.000
Rp312
5.000
Rp238
20.000
Rp165
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
820 Ohms
50 mW (1/20 W)
1 %
200 PPM / C
- 55 C
+ 155 C
30 V
0201
0603
0.6 mm (0.024 in)
0.3 mm (0.012 in)
0.23 mm (0.009 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 0R0 ET7 e3
RCA04020000ZSEDSR
Vishay
1:
Rp1.835
14.603 In Stock
20.000 Expected 02/10/2026
New Product
Mouser Part No
71-RCA04020000ZSEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 0R0 ET7 e3
14.603 In Stock
20.000 Expected 02/10/2026
1
Rp1.835
10
Rp422
100
Rp349
250
Rp275
500
View
10.000
Rp110
500
Rp238
1.000
Rp202
5.000
Rp147
10.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
0 Ohms
100 mW (1/10 W)
Jumper
Jumper
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 100K 1% ET7 e3
RCA0402100KFKEDSR
Vishay
1:
Rp1.835
27.891 In Stock
New Product
Mouser Part No
71-RCA0402100KFKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 100K 1% ET7 e3
27.891 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
100 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 200 100K 5% ET7 e3
RCA0402100KJNEDSR
Vishay
1:
Rp1.835
19.970 In Stock
10.000 Expected 21/08/2026
New Product
Mouser Part No
71-RCA0402100KJNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 200 100K 5% ET7 e3
19.970 In Stock
10.000 Expected 21/08/2026
1
Rp1.835
10
Rp422
100
Rp349
250
Rp275
10.000
Rp110
20.000
View
500
Rp238
1.000
Rp202
5.000
Rp147
20.000
Rp91,7
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
100 kOhms
100 mW (1/10 W)
5 %
200 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 100R 1% ET7 e3
RCA0402100RFKEDSR
Vishay
1:
Rp1.835
26.048 In Stock
New Product
Mouser Part No
71-RCA0402100RFKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 100R 1% ET7 e3
26.048 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
100 Ohms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 10K 1% ET7 e3
RCA040210K0FKEDSR
Vishay
1:
Rp1.835
15.930 In Stock
10.000 Expected 14/12/2026
New Product
Mouser Part No
71-RCA040210K0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 10K 1% ET7 e3
15.930 In Stock
10.000 Expected 14/12/2026
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
10 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 200 10K 5% ET7 e3
RCA040210K0JNEDSR
Vishay
1:
Rp1.835
28.610 In Stock
New Product
Mouser Part No
71-RCA040210K0JNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 200 10K 5% ET7 e3
28.610 In Stock
1
Rp1.835
10
Rp422
100
Rp349
250
Rp275
10.000
Rp110
20.000
View
500
Rp238
1.000
Rp202
5.000
Rp147
20.000
Rp91,7
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
10 kOhms
100 mW (1/10 W)
5 %
200 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 10R 1% ET7 e3
RCA040210R0FKEDSR
Vishay
1:
Rp1.835
27.847 In Stock
New Product
Mouser Part No
71-RCA040210R0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 10R 1% ET7 e3
27.847 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
10 Ohms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 200 10R 5% ET7 e3
RCA040210R0JNEDSR
Vishay
1:
Rp1.835
29.780 In Stock
New Product
Mouser Part No
71-RCA040210R0JNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 200 10R 5% ET7 e3
29.780 In Stock
1
Rp1.835
10
Rp422
100
Rp349
250
Rp275
10.000
Rp110
20.000
View
500
Rp238
1.000
Rp202
5.000
Rp147
20.000
Rp91,7
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
10 Ohms
100 mW (1/10 W)
5 %
200 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 15K 1% ET7 e3
RCA040215K0FKEDSR
Vishay
1:
Rp1.835
28.900 In Stock
New Product
Mouser Part No
71-RCA040215K0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 15K 1% ET7 e3
28.900 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
15 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 1K0 1% ET7 e3
RCA04021K00FKEDSR
Vishay
1:
Rp1.835
26.513 In Stock
New Product
Mouser Part No
71-RCA04021K00FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 1K0 1% ET7 e3
26.513 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
1 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 200 1K0 5% ET7 e3
RCA04021K00JNEDSR
Vishay
1:
Rp1.835
29.328 In Stock
New Product
Mouser Part No
71-RCA04021K00JNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 200 1K0 5% ET7 e3
29.328 In Stock
1
Rp1.835
10
Rp422
100
Rp349
250
Rp275
500
View
10.000
Rp110
500
Rp238
1.000
Rp202
5.000
Rp147
10.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
1 kOhms
100 mW (1/10 W)
5 %
200 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 1K5 1% ET7 e3
RCA04021K50FKEDSR
Vishay
1:
Rp1.835
16.575 In Stock
10.000 Expected 26/08/2026
New Product
Mouser Part No
71-RCA04021K50FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 1K5 1% ET7 e3
16.575 In Stock
10.000 Expected 26/08/2026
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
1.5 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 1M0 1% ET7 e3
RCA04021M00FKEDSR
Vishay
1:
Rp1.835
26.055 In Stock
New Product
Mouser Part No
71-RCA04021M00FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 1M0 1% ET7 e3
26.055 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
1 MOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 200 1M0 5% ET7 e3
RCA04021M00JNEDSR
Vishay
1:
Rp1.835
29.919 In Stock
New Product
Mouser Part No
71-RCA04021M00JNEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 200 1M0 5% ET7 e3
29.919 In Stock
1
Rp1.835
10
Rp385
100
Rp330
250
Rp257
10.000
Rp110
20.000
View
500
Rp220
1.000
Rp183
5.000
Rp147
20.000
Rp91,7
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
1 MOhms
100 mW (1/10 W)
5 %
200 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 200K 1% ET7 e3
RCA0402200KFKEDSR
Vishay
1:
Rp1.835
19.650 In Stock
10.000 Expected 25/08/2026
New Product
Mouser Part No
71-RCA0402200KFKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 200K 1% ET7 e3
19.650 In Stock
10.000 Expected 25/08/2026
1
Rp1.835
10
Rp440
100
Rp367
250
Rp294
10.000
Rp128
20.000
View
500
Rp238
1.000
Rp220
5.000
Rp165
20.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
200 Ohms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 200R 1% ET7 e3
RCA0402200RFKEDSR
Vishay
1:
Rp1.835
19.800 In Stock
10.000 On Order
New Product
Mouser Part No
71-RCA0402200RFKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 200R 1% ET7 e3
19.800 In Stock
10.000 On Order
1
Rp1.835
10
Rp440
100
Rp367
250
Rp294
10.000
Rp128
20.000
View
500
Rp238
1.000
Rp220
5.000
Rp165
20.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
200 Ohms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 20K 1% ET7 e3
RCA040220K0FKEDSR
Vishay
1:
Rp1.835
28.480 In Stock
New Product
Mouser Part No
71-RCA040220K0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 20K 1% ET7 e3
28.480 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp147
500
Rp257
1.000
Rp220
5.000
Rp202
10.000
Rp147
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
20 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 22K 1% ET7 e3
RCA040222K0FKEDSR
Vishay
1:
Rp1.835
26.690 In Stock
New Product
Mouser Part No
71-RCA040222K0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 22K 1% ET7 e3
26.690 In Stock
1
Rp1.835
10
Rp440
100
Rp367
250
Rp294
10.000
Rp128
20.000
View
500
Rp238
1.000
Rp220
5.000
Rp165
20.000
Rp110
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
22 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 22R 1% ET7 e3
RCA040222R0FKEDSR
Vishay
1:
Rp1.835
29.106 In Stock
New Product
Mouser Part No
71-RCA040222R0FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 22R 1% ET7 e3
29.106 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
22 Ohms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors
Thick Film Resistors - SMD RCA0402-SR 100 2K0 1% ET7 e3
RCA04022K00FKEDSR
Vishay
1:
Rp1.835
28.283 In Stock
New Product
Mouser Part No
71-RCA04022K00FKEDSR
New Product
Vishay
Thick Film Resistors - SMD RCA0402-SR 100 2K0 1% ET7 e3
28.283 In Stock
1
Rp1.835
10
Rp459
100
Rp385
250
Rp312
500
View
10.000
Rp128
500
Rp257
1.000
Rp220
5.000
Rp165
10.000
Rp128
Buy
Min.: 1
Mult.: 1
Reel :
10.000
Details
Reel, Cut Tape, MouseReel
RCA-SR
2 kOhms
100 mW (1/10 W)
1 %
100 PPM / C
- 55 C
+ 155 C
75 V
0402
1005
1 mm (0.039 in)
0.5 mm (0.02 in)
0.35 mm (0.014 in)
Automotive
Anti-Sulfur Resistors