VLZ6V2B-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ6V2B-GS18 is a Zener Diode rated at 6.12 V with 500 mW power dissipation in a SOD-80 QuadroMELF surface mount package, manufactured by Vishay General Semiconductor - Diodes Division. This component is classified as Obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part carries AEC-Q101 automotive qualification and ROHS3 compliance.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	6.12 V
Power - Max	500 mW
Impedance (Max)	10 Ohms
Current - Reverse Leakage @ Vr	3 µA @ 4 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	SOD-80 QuadroMELF
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the VLZ6V2B-GS18 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Zener voltage within acceptable tolerance of 6.12 V nominal
Power dissipation rating of 500 mW minimum
Operating temperature range of -65°C to 175°C minimum
Surface mount configuration

Mechanical Compatibility Criteria:

SOD-80 package family compatibility
Pin configuration and footprint alignment

Compliance Criteria:

RoHS3 compliance status
REACH compliance status

The substitute parts identified maintain electrical equivalence through matching nominal zener voltage (6.2 V represents a 1.3% deviation from 6.12 V), identical power ratings, and compatible operating temperature ranges. Package variations within the SOD-80 family (QuadroMELF, MiniMELF, DO-213AA) are acceptable substitutes provided PCB footprint compatibility is verified.

Parameter Comparison

Parameter	VLZ6V2B-GS18	TLZ6V2B-GS18	1N4627UR-1	1N5525DUR-1
Manufacturer	Vishay	Vishay	Microchip	Microchip
Voltage - Zener (Nom)	6.12 V	6.2 V	6.2 V	6.2 V
Tolerance	-	-	±5%	±1%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	10 Ohms	10 Ohms	1200 Ohms	30 Ohms
Current - Reverse Leakage @ Vr	3 µA @ 4 V	3 µA @ 4 V	5 µA @ 5 V	1 µA @ 5 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-80 QuadroMELF	SOD-80 MiniMELF	DO-213AA	DO-213AA
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	Not specified
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

TLZ6V2B-GS18 (Vishay) is the primary direct substitute. This part maintains Vishay manufacturer continuity, carries Active product status, and provides ROHS3 compliance matching the original specification. The nominal zener voltage of 6.2 V represents a 1.3% deviation from the 6.12 V original specification. The SOD-80 MiniMELF package is mechanically compatible within the SOD-80 family. Impedance and reverse leakage characteristics are identical to the original part. This substitute is suitable for applications where Vishay component lineage and automotive-grade reliability are required.

1N5525DUR-1 (Microchip) provides an alternative from a different manufacturer with Active product status. This part offers superior voltage tolerance (±1% versus unspecified), lower reverse leakage (1 µA @ 5 V), and improved impedance characteristics (30 Ohms). The DO-213AA package requires PCB footprint verification for compatibility. RoHS compliance status is not specified in the provided data. This substitute is applicable where tighter voltage tolerance and lower leakage performance are design requirements.

1N4627UR-1 (Microchip) is available as an alternative but carries RoHS non-compliance status, making it unsuitable for applications requiring regulatory compliance with ROHS3 standards. The impedance specification (1200 Ohms) represents a significant deviation from the original part characteristics. This substitute should be evaluated only in applications where RoHS compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Can TLZ6V2B-GS18 be used as a direct replacement for VLZ6V2B-GS18?

A: TLZ6V2B-GS18 is electrically compatible as a substitute. Both parts share identical power ratings (500 mW), impedance specifications (10 Ohms), reverse leakage characteristics (3 µA @ 4 V), and operating temperature ranges (-65°C to 175°C). The nominal zener voltage difference of 0.08 V (6.2 V versus 6.12 V) represents a 1.3% deviation. Package compatibility requires verification: TLZ6V2B-GS18 uses SOD-80 MiniMELF while VLZ6V2B-GS18 uses SOD-80 QuadroMELF. Both are SOD-80 family variants; however, PCB footprint differences may exist. Consult package datasheets for dimensional confirmation.

Q: What are the key differences between the Vishay and Microchip substitutes?

A: Vishay TLZ6V2B-GS18 maintains manufacturer continuity and identical electrical characteristics (10 Ohms impedance, 3 µA reverse leakage). Microchip 1N5525DUR-1 offers tighter voltage tolerance (±1%), lower reverse leakage (1 µA @ 5 V), and improved impedance (30 Ohms), but uses a different package (DO-213AA). Microchip 1N4627UR-1 carries RoHS non-compliance status and significantly higher impedance (1200 Ohms), making it unsuitable for RoHS-compliant applications.

Q: Are the DO-213AA packages compatible with the original SOD-80 footprint?

A: DO-213AA and SOD-80 are distinct package families with different physical dimensions and pin configurations. PCB footprint compatibility cannot be assumed. Design verification is required before substitution. Consult the mechanical drawings and package specifications for both the original SOD-80 QuadroMELF and the proposed DO-213AA package to confirm compatibility with your PCB layout.

Q: Which substitute is recommended for automotive applications?

A: TLZ6V2B-GS18 is the recommended substitute for automotive applications. It maintains the Vishay manufacturer source, carries ROHS3 compliance, and provides identical electrical performance to the original VLZ6V2B-GS18. The original part carried AEC-Q101 automotive qualification; however, specific automotive qualification status for TLZ6V2B-GS18 is not provided in the available data. Verify automotive qualification requirements with the manufacturer before final selection.

Q: What is the impact of impedance differences on circuit performance?

A: Impedance (Zzt) affects zener diode dynamic response and voltage regulation stability. The original VLZ6V2B-GS18 and substitute TLZ6V2B-GS18 both specify 10 Ohms impedance, ensuring equivalent dynamic performance. Microchip 1N5525DUR-1 specifies 30 Ohms impedance, representing a 3× increase, which may affect transient response characteristics. Microchip 1N4627UR-1 specifies 1200 Ohms impedance, representing a 120× increase, which will significantly degrade voltage regulation performance. Impedance differences require circuit simulation or testing to confirm suitability for specific applications.

Q: Is RoHS compliance a critical factor in substitute selection?

A: RoHS compliance is a regulatory requirement for many applications, particularly in consumer electronics and automotive markets. The original VLZ6V2B-GS18 is ROHS3 compliant. TLZ6V2B-GS18 maintains ROHS3 compliance. Microchip 1N4627UR-1 is explicitly RoHS non-compliant and is unsuitable for applications requiring regulatory compliance. Microchip 1N5525DUR-1 RoHS status is not specified in the provided data; clarification from the manufacturer is required before selection for RoHS-mandated applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message