VLZ39C-GS08 Equivalent & Substitute Parts Reference

Part Overview

The VLZ39C-GS08 is a Zener diode from Vishay General Semiconductor - Diodes Division, designed for voltage regulation and circuit protection applications. It features a nominal Zener voltage of 36.93 V, a power dissipation of 500 mW, and is packaged in a SOD-80 QuadroMELF surface-mount case. This product is classified as automotive-grade and AEC-Q101 qualified, making it suitable for high-reliability environments. The VLZ39C-GS08 is currently listed as obsolete, necessitating consideration of available direct substitute models for continued component sourcing and design maintenance.

Key Parameters

Parameter	VLZ39C-GS08
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	36.93 V
Power - Max	500 mW
Impedance (Max) (Zzt)	85 Ohms
Current - Reverse Leakage @ Vr	40 µA @ 34.2 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	SOD-80 Variant
Supplier Device Package	SOD-80 QuadroMELF
Grade / Qualification	Automotive / AEC-Q101
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Allowed substitute parts for the Zener diode category are determined by matching the following key parameters: Zener voltage (Vz), maximum power dissipation, maximum impedance (Zzt), reverse leakage current at reference voltage, forward voltage at specified current, operating temperature range, mounting type, package compatibility, environmental and compliance status, and qualification grade. Substitute models must align precisely within the tolerance of these specified parameters to ensure direct compatibility.

Parameter Comparison

Parameter	VLZ39C-GS08	TLZ39C-GS08
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	36.93 V	39 V
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	85 Ohms	85 Ohms
Current - Reverse Leakage @ Vr	40 µA @ 34.2 V	40 nA @ 34.2 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOD-80 Variant	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package	SOD-80 QuadroMELF	SOD-80 MiniMELF
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The VLZ39C-GS08 is obsolete and ROHS3 compliant, with AEC-Q101 automotive qualification and a moisture sensitivity level of 1. Substitute part TLZ39C-GS08 is active and matches the required environmental and compliance specifications. The substitute part shares the same manufacturer, supply chain status, RoHS, and REACH compliance, as well as ECCN. All substitute relationships are based strictly on these provided criteria.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting the VLZ39C-GS08 Zener diode?
A1: Substitution requires matching Zener voltage rating, power dissipation, maximum Zener impedance, reverse leakage current characteristics, forward voltage, operating temperature range, mounting type, package/case, environmental compliance, and qualification grade.

Q2: Is the package of TLZ39C-GS08 directly compatible with VLZ39C-GS08?
A2: Both parts use SOD-80 format surface-mount packages within the Zener diode category, as specified in their Supplier Device Package and Package/Case fields.

Q3: How does the reverse leakage current compare between these Zener diodes?
A3: TLZ39C-GS08 specifies 40 nA @ 34.2 V, while VLZ39C-GS08 specifies 40 µA @ 34.2 V.

Q4: Are both parts suitable for automotive applications?
A4: VLZ39C-GS08 is listed as automotive grade with AEC-Q101 qualification. The substitute TLZ39C-GS08 does not specify qualification grade in the provided parameters.

Q5: Do both parts meet ROHS compliance requirements?
A5: Both the main and substitute parts are ROHS3 compliant and REACH unaffected, ensuring adherence to environmental regulations.

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