1N972B Fairchild Semiconductor, 1N972B Datasheet - Page 2

• Manufacturer Part Number: 1N972B
• Description: DIODE ZENER 30V 500MW DO-35
• Manufacturer: Fairchild Semiconductor

Specifications of 1N972B

• Voltage - Zener (nom) (vz): 30V
• Current - Reverse Leakage @ Vr: 5µA @ 22.8V
• Tolerance: ±5%
• Power - Max: 500mW
• Impedance (max) (zzt): 49 Ohm
• Mounting Type: Through Hole
• Package / Case: DO-204AH, DO-35, Axial
• Operating Temperature: -65°C ~ 200°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Forward (vf) (max) @ If: -

1N957B - 1N979B Rev. F1
Notes:
1. Zener Voltage (V
2. Zener Impedance (Z
3. Maximum Zener Current Ratings (I
Top Mark Information
1N957B
1N958B
1N959B
1N960B
1N961B
1N962B
1N963B
1N964B
1N965B
1N966B
1N967B
1N968B
1N969B
1N970B
1N971B
1N972B
1N973B
1N974B
1N975B
1N976B
1N977B
1N978B
1N979B
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
Z
The maximum current handling capability on a worst case basis is limited by the actual zener voltage at the operation point and the power derating curve.
ZT
and Z
ZK
are measured by dividing the ac voltage drop across the device by the ac current applied. The specified limits are for I
Device
Z
) Measurement
Z
) Derivation
ZM
)
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) at 30°C ± 1°C and 3/8” lead length.
Z(ac)
= 0.1 I
Z(dc)
with the ac frequency = 60Hz.
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