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MCC
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* * *
omponents 21201 Itasca Street Chatsworth !"# $
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1N957 THRU 1N978
Zener Voltage 6.8V to 51V Silicon Planar Power Zener Diodes Standards zener voltage tolerance is 20%, Add suffix "A" for 10% tolerance and suffix "B" for 5% tolerance, non standards and higher zener voltage upon request
0.5W Silicon Planar Zener Diodes
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* * * Case: DO-35 glass case Polarity: Color band denotes cathode end Weight: Approx. 0.13 gram
DO-35
D
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Symbol Zener Current Power Dissipation @ TA=25oC Junction Temperature Storage Temperature Range Ptot TJ TSTG Value See Table 1 500 175 -65 to 175 Units mW
o o
A Cathode Mark B
C C
D
(OHFWULFDO &KDUDFWHULVWLFV # & 8QOHVV 2WKHUZLVH 6SHFLILHG
Thermal resistance Forward Voltage @ IF=200mA Symbol R-$ VF Maximum 300 1.5
o
C
Unit C/W V
DIMENSIONS INCHES MIN ------1.000 MM MIN ------25.40
NOTE:
Valid provided that a distance of 8mm from case are kept at ambient temperature
DIM A B C D
MAX .166 .079 .020 ---
MAX 4.2 2.00 .52 ---
NOTE
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1N957 thru 1N978
MCC PART NUMBER 1N957 1N958 1N959 1N960 1N961 1N962 1N963 1N964 1N965 1N966 1N967 1N968 1N969 1N970 1N971 1N972 1N973 1N974 1N975 1N976 1N977 1N978 Note: 1) ZENER VOLTAGE3) @TEST CURRENT VZ IZT V mA 6.8 18.5 7.5 16.5 8.2 15 9.1 14 10 12.5 11 11.5 12 10.5 13 9.5 15 8.5 16 7.8 18 7.0 20 6.2 22 5.6 24 5.2 27 4.6 30 4.2 33 3.8 36 3.4 39 3.2 43 3.0 47 2.7 51 2.5 MAXIMUM ZENER IMPEDANCE1) ZZT MAXIMUM REVERSE LEAKAGE CURRENT TEST-VOLTAGE IR2)
MCC
MAXIMUM ZENER CURRENT IZM2) mA 47 42 38 35 32 28 26 24 21 19 17 15 14 14 11 10 9.0 8.5 7.8 7.0 6.4 5.9 TYPICAL TEMP. COEFFICIENT %/: 0.050 0.058 0.062 0.068 0.075 0.076 0.077 0.079 0.082 0.083 0.085 0.086 0.087 0.088 0.090 0.091 0.092 0.093 0.094 0.095 0.095 0.096 ZZK

4.5 5.5 5.5 5.5 5.5 5 11.5 13 16 17 21 25 29 33 41 49 58 70 80 93 105 125
700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500
IZK mA 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
A
150 75 50 10 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Suffix A V 4.9 5.4 5.9 6.6 7.2 8.0 8.6 9.4 10.8 11.5 13.0 14.4 15.8 17.3 19.4 21.6 23.8 25.9 28.1 31.0 33.8 36.7
Suffix B V 5.2 5.7 6.2 6.9 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8
2) 3)
The Zener impedance is derived from the 1kHz AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (IZT) is superimposed on IZT Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. Valid provided that leads are kept at ambient temperature at a distance of 8mm from case. Measured with device junction in thermal equilibrium.
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