TLZ39C-GS08 Equivalent & Substitute Parts

Part Overview

The TLZ39C-GS08 is an active zener diode manufactured by Vishay General Semiconductor - Diodes Division, classified within the TLZ series. This component functions as a 39 V, 500 mW surface mount zener diode in SOD-80 MiniMELF packaging. The device is designed for voltage regulation and protection applications requiring precise zener voltage characteristics at 39 V nominal.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from multiple qualified sources. The identification of equivalent components requires strict alignment of electrical parameters, mechanical compatibility, and compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	39	V
Power - Max	500	mW
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLZ39C-GS08 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Zener voltage nominal value of 39 V
Maximum power dissipation of 500 mW
Surface mount technology with SOD-80 MiniMELF package compatibility

Environmental & Compliance Requirements:

Operating temperature range support (minimum -65°C to 175°C)
RoHS3 compliance status
Moisture Sensitivity Level 1 (Unlimited)

Mechanical Requirements:

Package designation: DO-213AC, MINI-MELF, SOD-80
Surface mount configuration

The BZV55-C39,115 manufactured by NXP Semiconductors meets all substitution criteria through identical zener voltage specification, equivalent power rating, matching package format, and compatible environmental certifications.

Parameter Comparison

Parameter	TLZ39C-GS08 (Vishay)	BZV55-C39,115 (NXP)	Compatibility
Voltage - Zener (Nom)	39 V	39 V	Identical
Power - Max	500 mW	500 mW	Identical
Impedance (Max)	85 Ohms	130 Ohms	Within acceptable range
Current - Reverse Leakage @ Vr	40 nA @ 34.2 V	50 nA @ 27.3 V	Comparable
Voltage - Forward (Vf) (Max)	1.5 V @ 200 mA	900 mV @ 10 mA	Different test conditions
Operating Temperature Range	-65°C ~ 175°C	-65°C ~ 200°C	BZV55 extends upper limit
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical
RoHS Status	ROHS3 Compliant	REACH Unaffected	Both compliant

Engineering Selection Recommendations

Primary Component: TLZ39C-GS08

The TLZ39C-GS08 maintains active product status with ROHS3 compliance and REACH unaffected designation. This component is suitable for applications requiring the specified electrical and thermal characteristics within the -65°C to 175°C operating window.

Substitute Component: BZV55-C39,115

The BZV55-C39,115 from NXP Semiconductors is a qualified substitute meeting all critical electrical parameters. This component provides identical zener voltage and power ratings with matching package geometry. The extended operating temperature range to 200°C offers additional thermal margin in applications approaching the upper temperature limit. Both components maintain equivalent compliance certifications and moisture sensitivity ratings.

Selection between these components should be based on availability, supply chain requirements, and application-specific thermal operating conditions. Both components are suitable for direct substitution in voltage regulation and protection circuits operating within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-C39,115 directly replace the TLZ39C-GS08 in existing designs?

A: Yes. Both components share identical zener voltage (39 V), power rating (500 mW), and package format (SOD-80 MiniMELF). The electrical and mechanical compatibility permits direct substitution without circuit modification.

Q: What is the significance of the impedance difference between these parts?

A: The TLZ39C-GS08 specifies 85 Ohms maximum impedance while the BZV55-C39,115 specifies 130 Ohms maximum. Both values fall within acceptable ranges for typical zener diode applications. The impedance difference may affect transient response characteristics in high-frequency filtering applications, but both components meet the 39 V zener specification.

Q: Are there temperature range considerations for substitution?

A: The BZV55-C39,115 extends the upper operating temperature to 200°C compared to the TLZ39C-GS08 at 175°C. Both maintain the lower limit of -65°C. Applications operating near 175°C should verify that the substitute component's extended range does not introduce unintended thermal behavior changes.

Q: Do both components meet the same compliance standards?

A: Both components are ROHS3 compliant and maintain Moisture Sensitivity Level 1 (Unlimited). The TLZ39C-GS08 carries REACH Unaffected status, while the BZV55-C39,115 also carries REACH Unaffected designation. Compliance requirements are satisfied by either component.

Q: What packaging considerations apply to these zener diodes?

A: Both components utilize identical packaging: DO-213AC, MINI-MELF, SOD-80 surface mount format. PCB footprints, reflow soldering profiles, and handling procedures remain consistent between components. No mechanical redesign is required for substitution.

Q: How do the reverse leakage current specifications compare?

A: The TLZ39C-GS08 specifies 40 nA at 34.2 V while the BZV55-C39,115 specifies 50 nA at 27.3 V. These measurements occur at different reference voltages, making direct comparison imprecise. Both values represent acceptable leakage performance for zener diode applications.

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