VLZ27-GS08 Equivalent & Substitute Parts

Part Overview

The VLZ27-GS08 is a Zener diode rated at 27 V nominal voltage with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This component is packaged in SOD-80 QuadroMELF surface mount configuration and is qualified to AEC-Q101 automotive standards. The VLZ27-GS08 is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production and field support applications.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	27 V
Power - Max	500 mW
Impedance (Max) (Zzt)	45 Ohms
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
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the VLZ27-GS08 is determined by electrical and mechanical parameter equivalence within the Zener diode category. The critical parameters that establish substitution validity are:

Zener voltage rating: 27 V nominal
Maximum power dissipation: 500 mW
Maximum impedance: 45 Ohms
Forward voltage characteristics: 1.5 V maximum at 200 mA
Operating temperature range: -65°C to 175°C
Surface mount configuration with SOD-80 package family compatibility
Automotive grade qualification and AEC-Q101 certification
RoHS3 compliance and MSL Level 1 rating

The TLZ27-GS08 meets all electrical specifications and operates within the same temperature range. Both components share identical electrical performance parameters and automotive qualification status. The primary distinction is the packaging variant designation (QuadroMELF versus MiniMELF) within the SOD-80 family, which represents different physical form factors of the same standardized package outline.

Parameter Comparison

Parameter	VLZ27-GS08	TLZ27-GS08	Match
Voltage - Zener (Nom) (Vz)	27 V	27 V	Yes
Power - Max	500 mW	500 mW	Yes
Impedance (Max) (Zzt)	45 Ohms	45 Ohms	Yes
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	Yes
Operating Temperature Range	-65°C ~ 175°C	-65°C ~ 175°C	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	SOD-80 Variant	DO-213AC, MINI-MELF, SOD-80	Yes
Grade	Automotive	Automotive	Yes
Qualification	AEC-Q101	AEC-Q101	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Yes
Product Status	Obsolete	Active	Different
Packaging Format	Bulk	Tape & Reel (TR)	Different

Engineering Selection Recommendations

The TLZ27-GS08 is the direct electrical and functional equivalent of the VLZ27-GS08. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications across all critical parameters including zener voltage, power rating, impedance, and forward voltage characteristics.

The TLZ27-GS08 is classified as active product status, ensuring ongoing availability and manufacturing support. The VLZ27-GS08 is obsolete, making the TLZ27-GS08 the appropriate selection for new designs and ongoing production requirements.

Both components carry AEC-Q101 automotive qualification and ROHS3 compliance certification, satisfying regulatory and quality requirements for automotive applications. The MSL Level 1 rating for both parts indicates unlimited shelf life under standard storage conditions.

The packaging difference between QuadroMELF and MiniMELF variants represents different physical form factors within the SOD-80 package family. PCB layout and footprint compatibility must be evaluated based on specific design requirements and available board space.

Frequently Asked Questions (FAQ)

Q: Can the TLZ27-GS08 be used as a direct replacement for the VLZ27-GS08 in existing designs?

A: Yes. The TLZ27-GS08 meets all electrical specifications of the VLZ27-GS08, including zener voltage, power dissipation, impedance, and operating temperature range. Both components are AEC-Q101 qualified and ROHS3 compliant. PCB footprint compatibility must be confirmed based on the specific QuadroMELF versus MiniMELF variant physical dimensions.

Q: What is the difference between QuadroMELF and MiniMELF packaging?

A: Both are SOD-80 package variants manufactured by Vishay. The primary difference is physical form factor and footprint dimensions. QuadroMELF and MiniMELF represent different mechanical configurations of the same standardized SOD-80 outline. Component selection depends on available PCB space and existing footprint design.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the VLZ27-GS08 and TLZ27-GS08 carry identical AEC-Q101 automotive qualification, ROHS3 compliance, and MSL Level 1 moisture sensitivity rating. Regulatory and quality requirements are equivalent.

Q: Why is the VLZ27-GS08 marked as obsolete?

A: The VLZ27-GS08 is classified as obsolete product status by the manufacturer. The TLZ27-GS08 represents the active equivalent offering from Vishay General Semiconductor - Diodes Division for this electrical specification class.

Q: What packaging format differences exist between these parts?

A: The VLZ27-GS08 is supplied in bulk packaging format. The TLZ27-GS08 is supplied in Tape & Reel (TR) format, which is standard for high-volume production and automated assembly processes.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Both components share identical zener voltage (27 V), power rating (500 mW), impedance (45 Ohms maximum), forward voltage (1.5 V @ 200 mA), and operating temperature range (-65°C to 175°C).

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