ZMY39-GS08 Equivalent & Substitute Parts

Part Overview

The ZMY39-GS08 is a Zener diode rated at 39 V, 1 W, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component in DO-213AB (MELF) packaging is designed for voltage regulation and protection applications in automotive-grade circuits. The part maintains Active product status with AEC-Q101 qualification, ensuring compliance with automotive reliability standards. Substitute parts are identified to address inventory availability, packaging format preferences, or specific leakage current requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

ZMY39-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 35233ZMY39-GS08 Datasheet

Current PartRFQ

ZM4754A-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 16980ZM4754A-GS08 Datasheet

DirectRFQ

ZMY39-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 6078ZMY39-GS18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ZMY39-GS08 is determined by the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Zener (Nominal): 39 V
• Tolerance: ±5%
• Power - Maximum: 1 W
• Impedance (Maximum): 60 Ohms
• Operating Temperature: 175°C

Mechanical Parameters (Must Match):

• Package / Case: DO-213AB, MELF (Glass)
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

Variable Parameters (Allowed to Differ):

• Packaging format (Cut Tape vs. Tape & Reel)
• Current - Reverse Leakage @ Vr (within acceptable operational limits)
• Supplier Device Package designation

The identified substitutes maintain all critical electrical, mechanical, and compliance parameters while differing only in packaging format and reverse leakage current specifications.

Parameter Comparison

Engineering Selection Recommendations

ZM4754A-GS08 (Direct Manufacturer Substitute): This part is electrically and mechanically equivalent to the ZMY39-GS08 with identical voltage, power, impedance, and temperature ratings. The primary distinction is packaging format: ZM4754A-GS08 is supplied in Tape & Reel (TR) format, whereas ZMY39-GS08 is supplied in Cut Tape (CT) format. Both maintain AEC-Q101 automotive qualification and ROHS3 compliance. The reverse leakage current specification differs (5 µA @ 29.7 V versus 500 nA @ 29 V), reflecting different measurement conditions rather than functional incompatibility. Selection of ZM4754A-GS08 is appropriate for high-volume production requiring reel packaging.

ZMY39-GS18 (Parametric Equivalent): This part is a parametric equivalent with identical electrical specifications, impedance, temperature rating, and packaging format (Cut Tape). Both ZMY39-GS08 and ZMY39-GS18 share the same base product number (ZMY39) and maintain equivalent reverse leakage current characteristics (500 nA @ 29 V). The suffix variation (-GS08 versus -GS18) indicates different manufacturing or distribution designations. Both parts carry Active product status, AEC-Q101 qualification, and ROHS3 compliance. Selection between these parts depends on inventory availability and supplier designation requirements.

All three parts are suitable for direct substitution in automotive-grade 39 V Zener diode applications requiring DO-213AB surface mount packaging and 1 W power dissipation capability.

Frequently Asked Questions (FAQ)

Q: Can ZM4754A-GS08 replace ZMY39-GS08 in production assembly?

A: Yes. ZM4754A-GS08 is electrically and mechanically equivalent. The difference is packaging format: ZM4754A-GS08 is supplied in Tape & Reel format while ZMY39-GS08 is supplied in Cut Tape format. Both are surface mount DO-213AB components with identical voltage (39 V), power (1 W), and impedance (60 Ohms) ratings. Assembly equipment compatibility with reel packaging must be confirmed.

Q: What is the significance of the reverse leakage current difference between ZMY39-GS08 (500 nA @ 29 V) and ZM4754A-GS08 (5 µA @ 29.7 V)?

A: The reverse leakage current specifications reflect different measurement conditions (voltage and test methodology) rather than functional performance differences. Both values are within acceptable operational limits for automotive-grade Zener diodes. The difference does not affect circuit performance in standard voltage regulation and protection applications.

Q: Are ZMY39-GS08 and ZMY39-GS18 interchangeable?

A: Yes. Both parts share identical electrical parameters: 39 V nominal voltage, ±5% tolerance, 1 W maximum power, 60 Ohms maximum impedance, and 500 nA reverse leakage current @ 29 V. Both are supplied in Cut Tape packaging and DO-213AB surface mount format. The suffix variation indicates different manufacturing or distribution designations only.

Q: Do all three parts meet automotive qualification requirements?

A: Yes. ZMY39-GS08, ZM4754A-GS08, and ZMY39-GS18 all carry AEC-Q101 qualification and Automotive grade designation, confirming compliance with automotive reliability and environmental standards.

Q: What is the moisture sensitivity level for these Zener diodes?

A: All three parts have Moisture Sensitivity Level (MSL) 1, classified as Unlimited. This indicates no moisture-related storage or handling restrictions.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant, confirming compliance with Restriction of Hazardous Substances regulations.