BZT55C39-GS08 Equivalent & Substitute Parts

Part Overview

The BZT55C39-GS08 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 39 V nominal with 500 mW power dissipation capability. This component operates in the surface mount category with SOD-80 QuadroMELF packaging and maintains active product status. The device is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements.

Substitute parts are identified when equivalent electrical performance can be achieved across critical parameters including nominal Zener voltage, power rating, tolerance, and operating temperature range, while maintaining compatibility with surface mount assembly processes.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	39	V
Tolerance	±5%	%
Power - Max	500	mW
Impedance (Max)	90	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 30 V	nA
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	V
Operating Temperature Range	-65°C to 175°C	°C
Mounting Type	Surface Mount	-
Package / Case	SOD-80 QuadroMELF	-
Grade	Automotive	-
Qualification	AEC-Q101	-

Substitute Part Grouping Explanation

Substitution eligibility for the BZT55C39-GS08 is determined by the following critical parameters:

Electrical Equivalence Criteria:

Nominal Zener voltage of 39 V
Tolerance specification of ±5%
Maximum power dissipation of 500 mW
Surface mount mounting type
Operating temperature range capability

Compliance & Qualification Criteria:

Active product status
ROHS3 compliance
REACH unaffected status
Automotive-grade qualification where applicable

The BZV55-C39,115 from NXP Semiconductors satisfies these substitution criteria through matching nominal voltage, tolerance, power rating, and surface mount configuration. Both devices maintain active product status and comply with environmental regulations.

Parameter Comparison

Parameter	BZT55C39-GS08 (Vishay)	BZV55-C39,115 (NXP)	Match Status
Voltage - Zener (Nom)	39 V	39 V	Equivalent
Tolerance	±5%	±5%	Equivalent
Power - Max	500 mW	500 mW	Equivalent
Impedance (Max)	90 Ohms	130 Ohms	Substitute Rated Higher
Current - Reverse Leakage @ Vr	100 nA @ 30 V	50 nA @ 27.3 V	Substitute Superior
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	900 mV @ 10 mA	Different Test Conditions
Operating Temperature Range	-65°C to 175°C	-65°C to 200°C	Substitute Extended Range
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	SOD-80 QuadroMELF	DO-213AC, MINI-MELF, SOD-80	Compatible Options
Product Status	Active	Active	Equivalent
RoHS Status	ROHS3 Compliant	Not Specified	Main Part Specified
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Primary Selection - BZT55C39-GS08 (Vishay): The BZT55C39-GS08 maintains active product status with explicit AEC-Q101 automotive qualification and ROHS3 compliance certification. This component is recommended for applications requiring documented automotive-grade qualification and explicit RoHS compliance verification.

Substitute Selection - BZV55-C39,115 (NXP): The BZV55-C39,115 provides functional equivalence across all critical electrical parameters: 39 V nominal Zener voltage, ±5% tolerance, and 500 mW power rating. This device maintains active product status and REACH unaffected status. The extended operating temperature range (-65°C to 200°C) and improved reverse leakage characteristics (50 nA versus 100 nA) represent performance enhancements. Both devices support surface mount assembly with compatible package options.

Selection between these components should be based on specific application requirements regarding automotive qualification documentation and RoHS compliance verification needs.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-C39,115 directly replace the BZT55C39-GS08 in automotive applications?

A: Both devices share equivalent nominal Zener voltage (39 V), tolerance (±5%), and power rating (500 mW). The BZV55-C39,115 maintains active product status and REACH compliance. However, the BZT55C39-GS08 carries explicit AEC-Q101 automotive qualification. Application requirements for documented automotive qualification should determine component selection.

Q: What are the package compatibility considerations?

A: The BZT55C39-GS08 uses SOD-80 QuadroMELF packaging. The BZV55-C39,115 offers multiple package options including DO-213AC, MINI-MELF, and SOD-80. Verify that the selected package variant matches your PCB footprint and assembly process specifications.

Q: How do the impedance specifications differ?

A: The BZT55C39-GS08 specifies maximum impedance of 90 Ohms, while the BZV55-C39,115 specifies 130 Ohms maximum. Both values fall within acceptable ranges for 39 V Zener diodes at this power level. Circuit design should account for these impedance values in voltage regulation and transient response calculations.

Q: Are the reverse leakage characteristics equivalent?

A: The BZT55C39-GS08 specifies 100 nA maximum reverse leakage at 30 V. The BZV55-C39,115 specifies 50 nA maximum at 27.3 V. The NXP device demonstrates superior leakage performance under comparable conditions.

Q: What is the temperature range difference?

A: The BZT55C39-GS08 operates from -65°C to 175°C. The BZV55-C39,115 extends the upper limit to 200°C. Applications requiring operation above 175°C should specify the NXP device.

Q: Are both devices RoHS compliant?

A: The BZT55C39-GS08 carries explicit ROHS3 compliance certification. The BZV55-C39,115 ROHS status is not specified in the provided data. Verify RoHS compliance requirements with the NXP device datasheet for applications requiring documented compliance.

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