TZMB22-GS18 Equivalent & Substitute Parts

Part Overview

The TZMB22-GS18 is a Zener diode rated at 22 V nominal voltage with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is packaged in SOD-80 MiniMELF format and is qualified to AEC-Q101 automotive standards. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across all critical parameters. Alternative sourcing becomes necessary due to inventory availability, supply chain optimization, or procurement requirements while maintaining identical functional specifications.

Substiute Parts

TZMB22-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1096TZMB22-GS18 Datasheet

Current PartRFQ

TZMB22-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 67196TZMB22-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TZMB22-GS18 are classified as parametric equivalents when they maintain identical electrical and mechanical specifications across all critical parameters. The substitution logic is based on the following key parameters:

• Zener voltage: 22 V nominal with ±2% tolerance
• Power dissipation: 500 mW maximum
• Package format: SOD-80 MiniMELF (DO-213AC)
• Surface mount configuration
• Automotive grade with AEC-Q101 qualification
• Operating temperature range: -65°C to 175°C
• Impedance, reverse leakage current, and forward voltage characteristics

Parts meeting all these criteria are electrically and mechanically interchangeable in circuit applications without design modification.

Parameter Comparison

Engineering Selection Recommendations

The TZMB22-GS08 is a direct parametric equivalent to the TZMB22-GS18. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TZM series and share identical electrical specifications, package format, and automotive qualifications.

Selection between these parts is based on supply chain availability and procurement requirements. Both parts maintain active product status and full compliance with ROHS3 and REACH regulations. The TZMB22-GS08 currently maintains higher inventory levels (67,096 pieces) compared to the TZMB22-GS18 (1,053 pieces), making it suitable for applications requiring extended lead time assurance or volume procurement.

No design modifications, circuit adjustments, or additional validation are required when substituting between these parts. Both components are suitable for automotive applications requiring AEC-Q101 qualified Zener diodes in the 22 V, 500 mW classification.

Frequently Asked Questions (FAQ)

Q: Are TZMB22-GS18 and TZMB22-GS08 electrically interchangeable?

A: Yes. Both parts are parametric equivalents with identical Zener voltage (22 V ±2%), power rating (500 mW), impedance (55 Ohms maximum), reverse leakage current (100 nA @ 16 V), and forward voltage characteristics (1.5 V @ 200 mA). No circuit modifications are required.

Q: Can these parts be used interchangeably in automotive applications?

A: Yes. Both parts carry automotive grade classification and AEC-Q101 qualification. They operate across the identical temperature range (-65°C to 175°C) and maintain equivalent performance in automotive circuit designs.

Q: Are the package formats identical?

A: Yes. Both parts use the SOD-80 MiniMELF package format (DO-213AC) with surface mount configuration. PCB footprints and assembly processes are identical.

Q: What is the difference between the GS18 and GS08 designations?

A: The GS18 and GS08 designations represent different tape and reel configurations or manufacturing batches within the same electrical specification. The electrical and mechanical parameters are identical.

Q: Do both parts meet current compliance standards?

A: Yes. Both TZMB22-GS18 and TZMB22-GS08 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. Both maintain active product status.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection is based on availability and supply chain strategy. The TZMB22-GS08 offers higher inventory availability for volume applications.