1N4491 vs 1N4188B feature comparison

1N4491 Digitron Semiconductors

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1N4188B Central Semiconductor Corp

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Rohs Code No No
Part Life Cycle Code Active Active
Ihs Manufacturer DIGITRON SEMICONDUCTORS CENTRAL SEMICONDUCTOR CORP
Reach Compliance Code unknown not_compliant
ECCN Code EAR99 EAR99
HTS Code 8541.10.00.50 8541.10.00.50
Case Connection ISOLATED ISOLATED
Configuration SINGLE SINGLE
Diode Element Material SILICON SILICON
Diode Type ZENER DIODE ZENER DIODE
Dynamic Impedance-Max 400 Ω 550 Ω
Forward Voltage-Max (VF) 1.5 V
JESD-30 Code O-LALF-W2 O-PALF-W2
JESD-609 Code e0 e0
Knee Impedance-Max 4500 Ω
Number of Elements 1 1
Number of Terminals 2 2
Operating Temperature-Max 175 °C 200 °C
Operating Temperature-Min -65 °C
Package Body Material GLASS PLASTIC/EPOXY
Package Shape ROUND ROUND
Package Style LONG FORM LONG FORM
Polarity UNIDIRECTIONAL UNIDIRECTIONAL
Power Dissipation-Max 1.5 W 1 W
Reference Voltage-Nom 120 V 120 V
Reverse Current-Max 0.25 µA
Reverse Test Voltage 96 V
Surface Mount NO NO
Technology ZENER ZENER
Terminal Finish TIN LEAD TIN LEAD
Terminal Form WIRE WIRE
Terminal Position AXIAL AXIAL
Voltage Tol-Max 5% 5%
Working Test Current 2 mA 2 mA
Base Number Matches 12 4
Pbfree Code No
JEDEC-95 Code DO-41
Qualification Status Not Qualified

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