Equivalent & Substitute Parts for ZMY91-GS08 Zener Diode

Part Overview

The ZMY91-GS08 is a 91 V, 1 W Zener diode manufactured by Vishay General Semiconductor - Diodes Division in DO-213AB (MELF) surface mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part carries automotive-grade qualification (AEC-Q101) and maintains ROHS3 compliance.

Substiute Parts

ZMY91-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1064ZMY91-GS08 Datasheet

Current PartRFQ

ZMY91-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 5004ZMY91-GS18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZMY91-GS08 is determined by strict equivalence across the following electrical and mechanical parameters:

• Zener Voltage (Vz): 91 V nominal with ±5% tolerance
• Power Dissipation: 1 W maximum
• Impedance (Zzt): 250 Ohms maximum
• Reverse Leakage Current: 500 nA @ 68 V
• Operating Temperature: 175°C maximum
• Package Configuration: DO-213AB MELF surface mount
• Automotive Qualification: AEC-Q101 certified
• Compliance: ROHS3 compliant

The substitute part ZMY91-GS18 meets all these criteria identically, differing only in packaging format (Cut Tape versus bulk inventory status).

Parameter Comparison

Engineering Selection Recommendations

The ZMY91-GS18 is a direct parametric equivalent to the ZMY91-GS08. Both parts share identical electrical specifications, mechanical packaging, and automotive-grade certifications. Selection between these parts is based on procurement format and inventory availability rather than technical performance differences.

The ZMY91-GS18 is available in Cut Tape (CT) packaging with higher inventory levels (4971 Pcs), whereas the ZMY91-GS08 is supplied in standard packaging with lower availability (969 Pcs). Both maintain ROHS3 compliance, AEC-Q101 automotive qualification, and unlimited moisture sensitivity level (MSL 1).

For applications requiring the ZMY91-GS08, the ZMY91-GS18 provides full functional and mechanical compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can ZMY91-GS18 replace ZMY91-GS08 in existing designs?

A: Yes. The ZMY91-GS18 is electrically and mechanically identical to the ZMY91-GS08. Both parts feature 91 V nominal Zener voltage, 1 W power rating, 250 Ohms maximum impedance, and identical DO-213AB MELF surface mount packaging. No circuit redesign is required.

Q: What is the difference between ZMY91-GS08 and ZMY91-GS18?

A: The parts differ only in packaging format. ZMY91-GS08 is supplied in standard packaging, while ZMY91-GS18 is supplied in Cut Tape (CT) format. All electrical and mechanical specifications are identical.

Q: Are both parts automotive-qualified?

A: Yes. Both ZMY91-GS08 and ZMY91-GS18 carry AEC-Q101 automotive qualification and are suitable for automotive applications requiring this certification level.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the operating temperature range for these parts?

A: Both parts are rated for operation up to 175°C maximum junction temperature.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical DO-213AB MELF surface mount packaging and can be assembled using the same equipment and processes without modification to pick-and-place programs or reflow profiles.