GDZT2R3.9 Equivalent & Substitute Parts Reference

Part Overview

The GDZT2R3.9 from Rohm Semiconductor is a surface-mount Zener diode designed for voltage regulation and protection applications, featuring a nominal Zener voltage of 3.9 V and a maximum power rating of 100 mW. The part is classified as obsolete, necessitating the identification of alternative models with equivalent electrical and mechanical characteristics to ensure continuous supply and maintain design compatibility in new and existing electronic assemblies.

Substiute Parts

GDZT2R3.9

Rohm SemiconductorIn Stock: 32762GDZT2R3.9 Datasheet

Current PartRFQ

CDZVT2R3.9B

Rohm SemiconductorIn Stock: 8456CDZVT2R3.9B Datasheet

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EDZVT2R3.9B

Rohm SemiconductorIn Stock: 2263EDZVT2R3.9B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute candidates are determined strictly by matching electrical and mechanical specifications, including nominal Zener voltage, maximum power rating, reverse leakage current, operating temperature range, mounting type, and package format. Additional compliance and supply chain factors, such as RoHS, REACH, ECCN, and HTSUS, must align to ensure regulatory compatibility.

Key parameters for substitution:

• Voltage - Zener (Nom) (Vz)
• Power - Max
• Current - Reverse Leakage @ Vr
• Operating Temperature
• Mounting Type
• Package / Case
• RoHS Status
• Moisture Sensitivity Level (MSL)
• REACH Status
• ECCN
• HTSUS

Parameter Comparison

Engineering Selection Recommendations

All listed substitute Zener diode models, CDZVT2R3.9B and EDZVT2R3.9B, are ROHS3 compliant, have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), REACH Unaffected status, and matching ECCN and HTSUS codes. As the GDZT2R3.9 is marked obsolete, selection should prioritize active substitute models with matching or superior compliance certifications.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting a Zener diode in this category?
A1: Substitution is governed by equivalence in nominal Zener voltage, maximum power rating, permissible reverse leakage current, operating temperature range, mounting type, package/case format, and compliance status.

Q2: Are the substitute parts compatible with the original footprint or PCB layout?
A2: Compatibility requires evaluation of the package/case design. GDZT2R3.9 uses 0201 (0603 Metric) and GMD2 packages, while substitutes are offered in VMN2M (SOD-923), SC-79, and SOD-523 formats.

Q3: Do the substitutes meet the same regulatory and material compliance standards?
A3: All substitutes listed are ROHS3 Compliant, REACH Unaffected, have MSL 1 (Unlimited), and match ECCN and HTSUS codes.

Q4: Should operating temperature differences be considered in substitution?
A4: All substitute parameters presented comply with or exceed the operating temperature range specified for the GDZT2R3.9.

Q5: Is reverse leakage current and Zener voltage identical in substitutes?
A5: Yes, both CDZVT2R3.9B and EDZVT2R3.9B maintain a nominal Zener voltage of 3.9 V and reverse leakage current of 5 µA @ 1 V, matching the GDZT2R3.9.

Q6: How does power rating vary among substitutes?
A6: CDZVT2R3.9B matches the 100 mW rating of GDZT2R3.9, while EDZVT2R3.9B offers an increased rating of 150 mW.