1N744A vs 1N991A feature comparison

1N744A Central Semiconductor Corp

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1N991A Motorola Mobility LLC

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Pbfree Code No
Rohs Code No No
Part Life Cycle Code Obsolete Obsolete
Ihs Manufacturer CENTRAL SEMICONDUCTOR CORP MOTOROLA INC
Part Package Code DO-35
Package Description O-XALF-W2 O-LALF-W2
Pin Count 2
Reach Compliance Code not_compliant unknown
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 1200 Ω 2200 Ω
JEDEC-95 Code DO-35 DO-204AA
JESD-30 Code O-XALF-W2 O-LALF-W2
JESD-609 Code e0 e0
Number of Elements 1 1
Number of Terminals 2 2
Operating Temperature-Max 200 °C 175 °C
Operating Temperature-Min -65 °C -65 °C
Package Body Material UNSPECIFIED GLASS
Package Shape ROUND ROUND
Package Style LONG FORM LONG FORM
Polarity UNIDIRECTIONAL UNIDIRECTIONAL
Power Dissipation-Max 0.4 W 0.4 W
Qualification Status Not Qualified Not Qualified
Reference Voltage-Nom 180 V 180 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% 10%
Working Test Current 1 mA 0.68 mA
Base Number Matches 1 1
Knee Impedance-Max 7100 Ω
Reverse Current-Max 5 µA

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