TLZ4V3C-GS08 Equivalent & Substitute Parts

Part Overview

The TLZ4V3C-GS08 is an active-status Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component is a 4.3 V, 500 mW surface mount device in SOD-80 MiniMELF packaging, designed for voltage regulation and protection applications in electronic circuits. The part is ROHS3 compliant and REACH unaffected, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when original inventory is unavailable, when alternative suppliers are required, or when design flexibility permits component interchange within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	4.3	V
Power - Max	500	mW
Impedance (Max)	40	Ohms
Current - Reverse Leakage @ Vr	3	µA @ 1 V
Voltage - Forward (Vf) (Max)	1.5	V @ 200 mA
Operating Temperature Range	-65 to 175	°C
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TLZ4V3C-GS08 is determined by equivalence in the following critical parameters:

Electrical Equivalence Criteria:

Zener voltage (Nom): 4.3 V
Maximum power dissipation: 500 mW
Reverse leakage current: 3 µA @ 1 V
Operating temperature range: minimum -65°C to 175°C

Mechanical Equivalence Criteria:

Package type: SOD-80 MiniMELF (DO-213AC)
Mounting type: Surface Mount

Compliance Criteria:

ROHS3 compliance
REACH unaffected status
ECCN classification: EAR99

The substitute part BZV55-B4V3,115 meets all electrical and mechanical requirements for direct substitution. Both components share identical nominal zener voltage, maximum power rating, reverse leakage specification, and package configuration. Operating temperature range of the substitute extends to 200°C, providing enhanced thermal capability. Both parts maintain equivalent regulatory compliance.

Parameter Comparison

Parameter	TLZ4V3C-GS08 (Vishay)	BZV55-B4V3,115 (NXP)	Match Status
Voltage - Zener (Nom)	4.3 V	4.3 V	Equivalent
Power - Max	500 mW	500 mW	Equivalent
Impedance (Max)	40 Ohms	90 Ohms	Substitute Higher
Current - Reverse Leakage @ Vr	3 µA @ 1 V	3 µA @ 1 V	Equivalent
Voltage - Forward (Vf) (Max)	1.5 V @ 200 mA	900 mV @ 10 mA	Different Test Conditions
Operating Temperature Range	-65 to 175°C	-65 to 200°C	Substitute Extended
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Product Status	Active	Active	Equivalent
ECCN	EAR99	EAR99	Equivalent
HTSUS	8541.10.0050	8541.10.0050	Equivalent

Engineering Selection Recommendations

TLZ4V3C-GS08 (Vishay General Semiconductor): Select this part when Vishay component qualification is required or when the lower maximum impedance specification (40 Ohms) is critical to circuit performance. This part is active status with full ROHS3 compliance and unlimited moisture sensitivity rating. Current inventory of 10,200 pieces supports immediate procurement.

BZV55-B4V3,115 (NXP USA Inc.): Select this substitute when NXP component qualification is required or when extended operating temperature range to 200°C provides design margin. This part is active status with equivalent regulatory compliance. Higher inventory availability of 30,400 pieces supports volume requirements. The impedance specification of 90 Ohms remains within acceptable tolerance for standard voltage regulation applications.

Both parts are suitable for direct substitution in applications where the specified electrical and mechanical parameters are met. Selection between these parts is based on supplier preference, inventory availability, and design-specific thermal or impedance requirements.

Frequently Asked Questions (FAQ)

Q: Can BZV55-B4V3,115 be used as a direct replacement for TLZ4V3C-GS08?

A: Yes. Both components share identical nominal zener voltage (4.3 V), maximum power dissipation (500 mW), reverse leakage current (3 µA @ 1 V), and SOD-80 MiniMELF package configuration. Both are surface mount devices with active product status and equivalent regulatory compliance (ROHS3, EAR99, HTSUS 8541.10.0050).

Q: What is the difference in impedance between these parts?

A: The TLZ4V3C-GS08 specifies maximum impedance of 40 Ohms, while the BZV55-B4V3,115 specifies 90 Ohms. This difference affects circuit response characteristics but does not prevent substitution in standard voltage regulation applications. Verify impedance requirements for high-frequency or precision applications.

Q: Are the operating temperature ranges compatible?

A: The TLZ4V3C-GS08 operates from -65°C to 175°C. The BZV55-B4V3,115 operates from -65°C to 200°C. The substitute part provides extended upper temperature capability. Both parts meet the minimum temperature range of the original component.

Q: Do both parts have the same packaging?

A: Yes. Both components use DO-213AC, MINI-MELF, SOD-80 packaging with surface mount configuration. Physical dimensions and PCB footprints are identical, permitting direct board-level substitution without layout modification.

Q: What are the compliance and regulatory differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both share the same HTSUS tariff code (8541.10.0050). No compliance barriers exist for substitution.

Q: Why are the forward voltage specifications different?

A: The TLZ4V3C-GS08 specifies forward voltage at 200 mA, while the BZV55-B4V3,115 specifies forward voltage at 10 mA. These are measured under different test conditions and do not indicate incompatibility. Both specifications are valid for their respective measurement points.

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