GDZ36B-HG3-08 Equivalent & Substitute Parts

Part Overview

The GDZ36B-HG3-08 is a 36 V Zener diode rated at 200 mW in a surface mount SOD-323 package, manufactured by Vishay General Semiconductor - Diodes Division. This component is classified as Active and carries AEC-Q101 automotive qualification. Zener diodes are essential voltage regulation and protection components in electronic circuits, requiring substitutes when original inventory is unavailable, when alternative electrical characteristics better suit application requirements, or when supply chain constraints necessitate alternative sourcing.

Substiute Parts

GDZ36B-HG3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 933GDZ36B-HG3-08 Datasheet

Current PartRFQ

MM3Z36VT1G

onsemiIn Stock: 1494MM3Z36VT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GDZ36B-HG3-08 is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage nominal value: 36 V (exact match required)
• Package type: SOD-323 (physical and electrical compatibility)
• Mounting type: Surface Mount (assembly process compatibility)
• Power rating: Equal to or greater than 200 mW (functional capability)

Secondary Compatibility Parameters:

• Operating temperature range: Must encompass or exceed -55°C to 150°C
• Reverse leakage current: Lower values indicate superior performance
• Impedance: Lower impedance values provide better voltage regulation
• Tolerance: Wider tolerances (±6%) remain acceptable for voltage regulation applications where ±2% is not explicitly required
• Compliance: RoHS3 and REACH status must match or exceed original specification

The MM3Z36VT1G from onsemi meets all primary substitution criteria with enhanced electrical characteristics in power rating (300 mW versus 200 mW) and improved impedance performance (90 Ohms versus 300 Ohms).

Parameter Comparison

Engineering Selection Recommendations

GDZ36B-HG3-08 (Vishay General Semiconductor): Select this part when the original specification requires ±2% voltage tolerance and the 200 mW power rating is sufficient for the application. This component carries AEC-Q101 automotive qualification and is suitable for automotive-grade applications. Current inventory status is 878 pieces.

MM3Z36VT1G (onsemi): Select this part as a direct substitute when the GDZ36B-HG3-08 is unavailable. The MM3Z36VT1G provides superior electrical performance with 300 mW power rating, lower impedance (90 Ohms), and lower reverse leakage current. The ±6% tolerance is acceptable in applications where tighter voltage regulation is not critical. Extended operating temperature range (-65°C to 150°C) provides additional thermal margin. Current inventory status is 1470 pieces. Both components maintain ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MM3Z36VT1G replace GDZ36B-HG3-08 in all applications?

A: Yes, for applications where the 36 V zener voltage is the primary functional requirement. The MM3Z36VT1G provides equal or superior performance across all measured parameters. The wider tolerance (±6% versus ±2%) is acceptable in standard voltage regulation circuits. Applications requiring strict ±2% voltage tolerance should evaluate the tolerance impact on circuit performance.

Q: What is the significance of the impedance difference (300 Ohms versus 90 Ohms)?

A: Impedance directly affects voltage regulation quality. Lower impedance (90 Ohms in MM3Z36VT1G) provides better voltage stability under load changes and temperature variations. The MM3Z36VT1G delivers superior regulation performance in this parameter.

Q: Are both parts physically identical?

A: Yes. Both components use the SOD-323 package (SC-76 case designation) and are surface mount devices. They are physically and mechanically interchangeable on PCB layouts designed for SOD-323 packages.

Q: Does the higher power rating (300 mW) of MM3Z36VT1G affect circuit design?

A: No. Higher power rating indicates the substitute can dissipate more heat without degradation. This is a beneficial characteristic that does not require circuit redesign. The component will operate safely at or below the original 200 mW specification.

Q: What is the impact of reverse leakage current differences?

A: The MM3Z36VT1G exhibits lower reverse leakage (50 nA @ 25.2 V versus 100 nA @ 27 V), indicating superior leakage performance. Lower leakage current reduces standby power consumption and improves circuit efficiency.

Q: Are both parts compliant with automotive standards?

A: The GDZ36B-HG3-08 carries explicit AEC-Q101 automotive qualification. The MM3Z36VT1G does not list AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 certification, the GDZ36B-HG3-08 is the specified choice.

Q: What is the operating temperature range difference?

A: The MM3Z36VT1G operates from -65°C to 150°C, while the GDZ36B-HG3-08 operates from -55°C to 150°C. The MM3Z36VT1G provides 10°C additional low-temperature margin, beneficial for applications in extreme cold environments.