1N957 Datasheet, PDF (1/2 Pages) Semtech Corporation – SILICON PLANAR ZENER DIODES

1N957...1N978
SILICON PLANAR ZENER DIODES
Standard Zener voltage tolerance is ± 20%. Add suffix
"A" for ± 10% tolerance and suffix "B" for ± 5%
tolerance. Other tolerances, non standard and higher
Zener voltages are upon request.
Max. 0.5
Max. 1.9
Min. 27.5
Black
Cathode Band
Black
Part No.
Black
"ST" Brand
XXX
ST
Max. 3.9
Min. 27.5
Glass Case DO-35
Dimensions in mm
Absolute Maximum Ratings (T_a = 25 ^OC)
Parameter
Symbol
Value
Unit
Power Dissipation
P_tot
500 ¹⁾
mW
Junction Temperature
T_j
175
O_C
Storage Temperature Range
T_S
- 65 to + 175
O_C
1) _{Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case}
Characteristics at T_a = 25 ^OC
Parameter
Thermal Resistance Junction to Ambient Air
Symbol
R_thA
Max.
0.3 ¹⁾
Forward Voltage
at I_F = 200 mA
V_F
1.5
1) _{Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.}
Unit
K/mW
V
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
Dated : 13/06/2007