High voltage surge resistors SR25/37/37L/52
Dimensions ( mm )
TYPE D
Max.
L 1
max.
L 2
max.
d
(±0.05)
SR25 2.7 6.5 7.5 0.6
SR37 4.0 9.0 12 0.7
SR37L 4.0 12 14 0.8
SR52 6.0 16.5 18.5 0.8
QUICK REFERENCE DATA
VALUE
DESCRITION SR25 SR37 SR37L SR52
resistance range 11 ㏀to 33 ㏁
51 ㏀to 56 ㏁
resistance tolerance ±10%, ±5%, ±2%, ±1% ( E24, E48 series )
temperature coefficient :
± 350 ppm / ℃
rated dissipation
at Tamb = 70 ℃ 0.25 W 0.5 W 1Ws 1W
max. working voltage 1000 V 2000 V 3500 V 7000 V
max. overload voltage 1600 V 3600 V 7000 V 10000 V
dielectric withstanding
voltage(during 1 min.) ac, 700V ac, 700V ac, 700V ac, 700V
basic specifications IEC 60 115-1B
safety requirements - UL:1676
CSA:22.2
VDE:0860 - C-UL
(CSA22.2)
VDE:0860
climatic category (IEC60)
55 / 155 / 56
stability, ∆R/R max. after
load : 1000 hours ± 5% +0.1Ω
damp heat ± 3% +0.1Ω
soldering heat ± 3% +0.1Ω
0.25W 0.5W 1Ws and 1W
high voltage surge: ±10%
(1nFor10nFcapacitor2.5s
charge 2.5s discharge pulse
10 times. 1pulse/5sec,max.)
11 ㏀- 91K:3KV
100 ㏀- 470K:5KV
510 ㏀- 33 ㏁:7KV
(1000pF capacitor)
51 ㏀- 470 ㏀:7KV
510 ㏀- 56 ㏁:10KV
(0.01 ㎌capacitor)
10KV
(0.01 ㎌capacitor)
• Excellent anti-surge characteristics
• Stable characteristics to moisture
resistance even in high resistance
range.
APPLICATIONS
• CRT-RGB witch is used TV,monitor
• Devices which need protection
surge voltage between power
preliminary and secondary.
DESCRIPTION
A metal gl
azed film is deposited on a
high grade ceramic body. After a
helical groove has been cut in the
resistive layer, tinned electrolytic
copper wire are welded to the end-
caps. The resistors are coated with a
brown and blue non flammable
lacquer which provides electrical ,
mechanical, and climatic protection.