VLZ22C-GS08 Equivalent & Substitute Parts

Part Overview

The VLZ22C-GS08 is a Zener Diode rated at 21.63 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, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The part carries AEC-Q101 automotive qualification and ROHS3 compliance.

Substiute Parts

VLZ22C-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 774VLZ22C-GS08 Datasheet

Current PartRFQ

TLZ22C-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 819TLZ22C-GS08 Datasheet

DirectRFQ

1N5541BUR-1

Microchip TechnologyIn Stock: 8391N5541BUR-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ22C-GS08 is determined by the following critical parameters:

Electrical Parameters:

• Zener voltage within acceptable tolerance of 21.63 V nominal
• Power dissipation rating of 500 mW minimum
• Operating temperature range of -65°C to 175°C minimum
• Surface mount technology compatibility

Mechanical Parameters:

• SOD-80 package family compatibility or equivalent footprint
• Surface mount mounting type

Compliance Parameters:

• ROHS3 compliance
• Automotive grade or equivalent qualification

Two substitute parts meet these criteria: TLZ22C-GS08 (Vishay General Semiconductor - Diodes Division) and 1N5541BUR-1 (Microchip Technology). Both parts satisfy the electrical and mechanical requirements while maintaining compliance standards.

Parameter Comparison

Engineering Selection Recommendations

TLZ22C-GS08 (Vishay General Semiconductor - Diodes Division):

This part is the primary substitute for the VLZ22C-GS08. Both components are manufactured by the same supplier and share identical electrical specifications (500 mW power rating, 30 Ohms maximum impedance, 1.5 V forward voltage). The TLZ22C-GS08 operates within the same temperature range (-65°C to 175°C) and maintains ROHS3 compliance. The zener voltage is 22 V nominal compared to 21.63 V, representing a 1.7% difference. The TLZ22C-GS08 is currently in Active product status with 763 units in stock. Package differences exist: TLZ22C-GS08 uses SOD-80 MiniMELF while VLZ22C-GS08 uses SOD-80 QuadroMELF. Both are SOD-80 family packages suitable for surface mount applications.

1N5541BUR-1 (Microchip Technology):

This part provides an alternative substitute with identical 500 mW power rating and matching operating temperature range. The 1N5541BUR-1 is currently in Active product status with 805 units in stock. The zener voltage is 22 V nominal with ±5% tolerance specification. Key differences include: impedance of 100 Ohms (versus 30 Ohms for VLZ22C-GS08), lower reverse leakage current (10 nA @ 19.8 V), and lower forward voltage (1.1 V @ 200 mA). The package is DO-213AA, a different surface mount package family from SOD-80. RoHS status is not specified for this part.

Selection between TLZ22C-GS08 and 1N5541BUR-1 depends on circuit-specific requirements regarding impedance characteristics and package footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can TLZ22C-GS08 directly replace VLZ22C-GS08 in existing designs?

A: TLZ22C-GS08 meets the electrical requirements (500 mW power, 30 Ohms impedance, -65°C to 175°C operating range, ROHS3 compliance). However, package differences exist: TLZ22C-GS08 uses SOD-80 MiniMELF while VLZ22C-GS08 uses SOD-80 QuadroMELF. PCB footprint compatibility must be verified before implementation.

Q: What is the significance of the zener voltage difference between 21.63 V and 22 V?

A: The difference represents 1.7% variation. Both substitute parts specify 22 V nominal zener voltage. Circuit tolerance requirements determine whether this variation is acceptable for the application.

Q: Why does 1N5541BUR-1 have higher impedance (100 Ohms) compared to VLZ22C-GS08 (30 Ohms)?

A: Impedance is a characteristic of the diode design and manufacturing process. Higher impedance affects dynamic response and noise characteristics. Application requirements determine whether this parameter difference is acceptable.

Q: Are all three parts automotive qualified?

A: VLZ22C-GS08 carries AEC-Q101 automotive qualification. TLZ22C-GS08 is manufactured by the same automotive-focused supplier. 1N5541BUR-1 automotive qualification status is not specified in the provided data.

Q: What is the difference between SOD-80 QuadroMELF and SOD-80 MiniMELF packages?

A: Both are SOD-80 family surface mount packages. QuadroMELF and MiniMELF are package variants with different physical dimensions. PCB layout and assembly equipment compatibility must be verified for each variant.

Q: Is reverse leakage current a critical parameter for substitution?

A: Reverse leakage current affects circuit performance in high-impedance applications. VLZ22C-GS08 specifies 40 µA @ 20 V, while TLZ22C-GS08 specifies 40 nA @ 20 V and 1N5541BUR-1 specifies 10 nA @ 19.8 V. Application requirements determine whether these differences are significant.

Q: Can 1N5541BUR-1 be used in place of TLZ22C-GS08?

A: Both parts meet the 500 mW power requirement and operating temperature range. However, package differences (DO-213AA versus SOD-80 MiniMELF) and impedance differences (100 Ohms versus 30 Ohms) require circuit-specific evaluation before substitution.