HIGH POWER & HIGH VOLTAGE RESISTORS
2 WATT to 250 WATT, 15KV to 300KV
RESISTORSꢀCAPACITORSꢀCOILSꢀDELAY LINES
Term.W is
RoHS
compliant
& 260°C
compatible
SR SERIES
RoHS
ꢀ Power ratings to 250 watts, voltages to 300KV
ꢀ Wide resistance range: 500KΩ to 5000MΩ
ꢀ Standard Tolerances: ±2, 5, 10, 20%
ꢀ Excellent temperature stability
ꢀ Excellent resistance to voltage pulses
ꢀ Ferrule terminals for clip mounting
Industry’s highest power film resistors!
RCD’s SR Series is designed for high voltage and/or high
power applications. Film construction has extremely low
reactance enabling superior high-frequency performance.
Insulation is resistant to moisture, solvents, and oil
mediums.
The combination of high power and high voltage provides
new opportunities for design engineers to obtain the utmost
in performance, without the need to assemble chains of
resistors in series. Applications include X-ray equipment,
electron microscopes, and TWT amplifiers.
→|
|←
H
↑
D
↓
|
L
|
Max.
Working
Voltage*
Dimensions Inch [mm]
RCD
Type
Wattage
@ 70°C**
Critical
Resistance
Resistance
Range
L
D
H
SR15
SR20
SR30
SR60
SR90
15KV
20KV
30KV
60KV
2.0
3.0
5.0
10
112MΩ
133MΩ
180MΩ
360MΩ
50KΩ to 500M
50KΩ to 1000M
50KΩ to 2000M
50KΩ to 5000M
2.05 ±. 08 [52.1 ± 2]
3.23 ± .08 [82 ± 2 ]
3.94 ± .08 [100 ± 2]
7.87 ± .08 [200 ± 2]
.512±.02 [13.0±.51]
.512±.02 [13.0±.51]
.748±.02 [19.0±.51]
.906±.02 [23.0±.51]
.275±.04 [7.0±1.01]
.275±.04 [7.0±1.01]
.394±.05 [10.0±1.27]
.590±.05 [14.0±1.27]
90KV
120KV
150KV
200KV
250KV
300KV
25
324MΩ
288MΩ
225MΩ
267MΩ
312MΩ
360MΩ
50KΩ to 5000M
50KΩ to 5000M
50KΩ to 5000M
100KΩ to 5000M
100KΩ to 5000M
100KΩ to 5000M
11.02 ± .08 [280 ± 2]
14.57 ± .08 [370 ± 2]
18.50 ± .08 [470 ± 2]
23.62 ± .12 [600 ± 3]
31.50 ± .12 [800 ± 3]
39.37 ± .12 [1000 ± 3]
1.18±.02 [30.0±.51]
1.81±.02 [46.0±.51]
1.81±.02 [46.0±.51]
1.81±.02 [46.0±.51]
2.12±.02 [53.8±.51]
2.12±.02 [53.8±.51]
.787±.06 [20.0±1.52]
.787±.06 [20.0±1.52]
.984±.06 [25.0±1.52]
.984±.06 [25.0±1.52]
1.26±.08 [32.0±1.52]
1.26±.08 [32.0±1.52]
SR120
SR150
SR200
SR250
SR300
50
100
150
200
250
*
Maximum working voltage determined by E= PR below the critical resistance value.
** Increased wattage ratings up to double the standard are available, consult factory.
45°
45°
← D →
PERFORMANCE CHARACTERISTICS
W
→ ←
Wattage Derating (linear)
Temperature Range
Full power @ 70°C to zero @ 125°C
-25°C to + 125°C
MOUNTING CLIPS
R
Temperature Coefficient
Short-Time Overload*
1000 Hour Load Life (in oil)
Dielectric Strength
300 ppm/°C Typ.
±2.5% Max. ∆R
H
t
±5.0% Max. ∆R
±1.0% Max. ∆R
* 2.5x rated wattage (not to exceed 1.5x max. working voltage) for 5 seconds.
←
L →
M
(Dimensions given are nominal in inches)
P/N DESIGNATION:
For use on Type
SR15, SR20
SR30
R
D
L
H
M
t
W
SR90 - 107 - K B W
.24 .24 .51 .67 .125 .02 .04
.36 .40 .63 1.00 .165 .03 .06
.44 .59 .71 1.25 .165 .04 .06
.57 .71 .95 1.54 .256 .04 .06
RCD Type
3-Digit Resis. Code: 2 signif. digits & multiplier
eg. 503= 50KΩ, 104=100KΩ, 105=1MΩ, 106=10MΩ,
107=100MΩ, 108=1000MΩ (1GΩ), etc.
SR60
SR90
Tolerance Code: F=1%, G=2%, J=5%, K=10%, M=20%
Packaging: B = Bulk (only)
SR120, SR150, SR200 .89 .79 1.42 2.36 .256 .06 .08
Termination: W= Lead-free
SR250, SR300
1.04 .98 1.77 2.75 .256 .06 .08
-
-
-
-
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: 603 669 0054 Fax: 603 669 5455 Email:sales@rcdcomponents.com
FA103 Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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