ZMY39-GS18 Equivalent & Substitute Parts

Part Overview

The ZMY39-GS18 is an automotive-grade Zener diode rated at 39 V nominal with 1 W maximum power dissipation in a DO-213AB surface mount package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is qualified to AEC-Q101 automotive standards and carries Active product status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format preferences, or supply chain considerations.

Substiute Parts

ZMY39-GS18

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

Current PartRFQ

ZM4754A-GS08

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

DirectRFQ

ZMY39-GS08

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZMY39-GS18 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Zener (Nominal): 39 V
• Tolerance: ±5%
• Power - Maximum: 1 W
• Impedance (Maximum): 60 Ohms
• Operating Temperature: 175°C
• Package / Case: DO-213AB, MELF (Glass)
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

Allowable Variation:

• Packaging format (Cut Tape vs. Tape & Reel) does not affect electrical or mechanical compatibility
• Reverse leakage current specifications may differ within the same device family without affecting substitution eligibility

The substitute parts ZMY39-GS08 and ZM4754A-GS08 meet all critical matching parameters and are therefore direct electrical and mechanical equivalents.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ZMY39-GS18, ZMY39-GS08, and ZM4754A-GS08—are Active status components manufactured by Vishay General Semiconductor - Diodes Division and carry AEC-Q101 automotive qualification. All are ROHS3 compliant and REACH unaffected.

ZMY39-GS08 is a parametric equivalent to ZMY39-GS18 with identical electrical specifications and Cut Tape packaging. This part is suitable for direct substitution in applications where packaging format does not impose constraints.

ZM4754A-GS08 is a direct manufacturer equivalent with identical electrical specifications but supplied in Tape & Reel format. This part is suitable for high-volume production environments where Tape & Reel packaging is standard. The reverse leakage current specification differs (5 µA vs. 500 nA) but remains within acceptable limits for automotive Zener diode applications.

Selection between these substitutes is determined by packaging requirements and supply chain availability rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can ZMY39-GS08 replace ZMY39-GS18 in production?

A: Yes. ZMY39-GS08 is a parametric equivalent with identical electrical specifications, tolerance, power rating, impedance, operating temperature, and package type. The only difference is packaging format (Cut Tape). Both are AEC-Q101 qualified automotive-grade components.

Q: What is the difference between ZMY39-GS08 and ZM4754A-GS08?

A: Both parts have identical nominal voltage (39 V), tolerance (±5%), power rating (1 W), impedance (60 Ohms), and operating temperature (175°C). The primary differences are packaging format (ZMY39-GS08 is Cut Tape; ZM4754A-GS08 is Tape & Reel) and reverse leakage current specification (500 nA vs. 5 µA). Both are AEC-Q101 qualified.

Q: Does packaging format affect electrical performance?

A: No. Cut Tape and Tape & Reel packaging formats contain identical components and do not affect electrical performance. Packaging selection is determined by assembly process requirements and inventory management practices.

Q: Are all three parts automotive qualified?

A: Yes. ZMY39-GS18, ZMY39-GS08, and ZM4754A-GS08 are all Automotive grade and AEC-Q101 qualified.

Q: Can I use ZM4754A-GS08 if the design specifies ZMY39-GS18?

A: Yes, provided the application tolerates the higher reverse leakage current specification (5 µA vs. 500 nA). All other electrical and mechanical parameters are equivalent. Both parts are AEC-Q101 qualified automotive components in DO-213AB packages.

Q: What does the "-GS18" and "-GS08" designation indicate?

A: These designations identify the packaging format and tape specifications. "-GS18" indicates Cut Tape with 18 mm tape width; "-GS08" indicates Cut Tape with 8 mm tape width or Tape & Reel format. The electrical specifications of the diode itself remain identical across these variants.