TZMB47-GS18 Equivalent & Substitute Parts

Part Overview

The TZMB47-GS18 is a Zener diode rated at 47 V nominal voltage with 500 mW maximum power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is packaged in SOD-80 MiniMELF configuration and is qualified to AEC-Q101 automotive standards. The part is currently active in production with 989 pieces in stock. Equivalent and substitute parts are identified when they share identical electrical specifications and mechanical compatibility within the same package family, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

TZMB47-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1028TZMB47-GS18 Datasheet

Current PartRFQ

TZMB47-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 4007TZMB47-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TZMB47-GS18 is determined by strict equivalence across the following critical parameters:

• Zener Voltage (Vz): 47 V nominal with ±2% tolerance
• Power Dissipation: 500 mW maximum
• Package Configuration: SOD-80 MiniMELF (DO-213AC)
• Mounting Technology: Surface mount
• Impedance Specification: 110 Ohms maximum
• Reverse Leakage Current: 100 nA @ 36 V
• Forward Voltage: 1.5 V maximum @ 200 mA
• Temperature Range: -65°C to 175°C
• Automotive Qualification: AEC-Q101 compliance required

The TZMB47-GS08 is identified as a parametric equivalent because it maintains identical electrical characteristics and mechanical compatibility across all specified parameters. Both parts belong to the TZM series and share the same base product number (TZMB47), differing only in manufacturing date code designation (GS18 versus GS08).

Parameter Comparison

Engineering Selection Recommendations

The TZMB47-GS08 is a direct parametric equivalent to the TZMB47-GS18 and is suitable for substitution in all applications where the primary part is specified. Both components carry identical AEC-Q101 automotive qualification and maintain full compliance with ROHS3 and REACH regulatory requirements. The TZMB47-GS08 is currently available with higher inventory (3900 pieces) compared to the TZMB47-GS18 (989 pieces), providing supply chain flexibility. Selection between these two parts should be based on availability, lead time, and procurement requirements rather than electrical or mechanical performance considerations, as they are functionally interchangeable.

Frequently Asked Questions (FAQ)

Q: Can TZMB47-GS08 be used as a direct replacement for TZMB47-GS18?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, including 47 V zener voltage, 500 mW power rating, ±2% tolerance, and all other critical parameters. They share the same SOD-80 MiniMELF package and mounting technology.

Q: What is the difference between TZMB47-GS18 and TZMB47-GS08?

A: The difference is limited to the manufacturing date code designation (GS18 versus GS08). All electrical characteristics, mechanical dimensions, and performance specifications are identical.

Q: Are both parts automotive qualified?

A: Yes. Both TZMB47-GS18 and TZMB47-GS08 are rated for automotive applications and carry AEC-Q101 qualification.

Q: Do these parts require different PCB footprints?

A: No. Both parts use the SOD-80 MiniMELF package (DO-213AC) and require identical PCB footprints and assembly processes.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited).

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection should be based on current inventory availability and procurement lead times, as they are functionally identical.