TZMB4V3-GS18 Equivalent & Substitute Parts

Part Overview

The TZMB4V3-GS18 is a Zener diode rated at 4.3 V nominal with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is packaged in SOD-80 MiniMELF format and qualifies for automotive applications under AEC-Q101 certification. The part is currently active in production with 919 pieces available in inventory. Substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the same product series, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

TZMB4V3-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 997TZMB4V3-GS18 Datasheet

Current PartRFQ

TZMB4V3-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 3779TZMB4V3-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TZMB4V3-GS18 is determined by strict equivalence across the following critical parameters:

Zener voltage specification (4.3 V nominal), voltage tolerance (±2%), maximum power dissipation (500 mW), maximum impedance (90 Ohms), reverse leakage current (1 µA @ 1 V), forward voltage characteristics (1.5 V @ 200 mA), operating temperature rating (175°C), surface mount packaging format (SOD-80 MiniMELF), automotive grade classification, and AEC-Q101 qualification status.

The substitute part TZMB4V3-GS08 maintains identical electrical performance and mechanical compatibility within the TZM series, differing only in tape reel configuration (GS08 versus GS18 designation), which represents a packaging and supply chain variation rather than a functional difference.

Parameter Comparison

Engineering Selection Recommendations

Both TZMB4V3-GS18 and TZMB4V3-GS08 are active production components manufactured by Vishay General Semiconductor - Diodes Division within the TZM series. Both parts carry AEC-Q101 automotive qualification and maintain ROHS3 compliance with REACH unaffected status, satisfying regulatory requirements for automotive and industrial applications.

Selection between these parts is based on supply chain availability and tape reel configuration requirements. The TZMB4V3-GS18 currently maintains 919 pieces in inventory, while the TZMB4V3-GS08 variant has 3699 pieces available. Both parts are functionally interchangeable at the circuit level, with no electrical performance differentiation. Component selection should prioritize availability and procurement lead time requirements specific to manufacturing schedules.

Frequently Asked Questions (FAQ)

Q: Can TZMB4V3-GS08 be used as a direct replacement for TZMB4V3-GS18 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The GS08 and GS18 designations refer to tape reel packaging configurations only and do not affect circuit performance or compatibility.

Q: What does the GS08 and GS18 designation indicate?

A: These designations represent different tape reel quantities per reel in the standard packaging format. Both parts use SOD-80 MiniMELF surface mount packaging and are compatible with identical PCB footprints and reflow soldering processes.

Q: Are both parts suitable for automotive applications?

A: Yes. Both TZMB4V3-GS18 and TZMB4V3-GS08 carry automotive grade classification and AEC-Q101 qualification, meeting automotive industry standards for reliability and performance.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Zener voltage (4.3 V), voltage tolerance (±2%), maximum power dissipation (500 mW), impedance (90 Ohms maximum), reverse leakage current (1 µA @ 1 V), and forward voltage characteristics (1.5 V @ 200 mA) must remain constant for substitution validity.

Q: Do both parts have identical moisture sensitivity and environmental compliance?

A: Yes. Both parts have Moisture Sensitivity Level 1 (Unlimited), ROHS3 compliance, and REACH unaffected status, ensuring identical handling and storage requirements.

Q: Which part should be selected based on current inventory levels?

A: TZMB4V3-GS08 has higher inventory availability (3699 pieces) compared to TZMB4V3-GS18 (919 pieces). Selection should align with procurement timelines and supply chain requirements.