Equivalent & Substitute Parts Reference for CDZFHT2RA4.3B Zener Diode

Part Overview

The Rohm Semiconductor CDZFHT2RA4.3B is a surface mount Zener diode with a nominal Zener voltage of 4.3 V, maximum power dissipation of 100 mW, and a reverse leakage current rating of 5 µA at 1 V. It features an automotive grade (AEC-Q101-qualified) design and is provided in the VMN2 (SOD-923) package. The part is currently listed as "Not For New Designs," indicating that engineering teams must identify alternative models for future project integration and component lifecycle management.

Substiute Parts

CDZFHT2RA4.3B

Rohm SemiconductorIn Stock: 2777CDZFHT2RA4.3B Datasheet

Current PartRFQ

CDZT2RA4.3B

Rohm SemiconductorIn Stock: 8542CDZT2RA4.3B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined strictly by matching the following key electrical, mechanical, and compliance parameters:

• Zener voltage (nominal): 4.3 V
• Tolerance: ±3.02%
• Maximum power dissipation: 100 mW
• Impedance (maximum): 100 Ohms
• Reverse leakage current at test voltage: 5 µA @ 1 V
• Operating junction temperature: 150°C
• Mounting type: Surface Mount
• Package and device outline: VMN2 (SOD-923) with 2-SMD, Flat Leads
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)
• REACH Status: Unaffected

All listed substitute parts are grouped strictly by adherence to these parameters.

Parameter Comparison

Engineering Selection Recommendations

For the CDZFHT2RA4.3B, alternative selection is necessary due to its "Not For New Designs" status. The CDZT2RA4.3B part meets all specified electrical and mechanical parameters and holds the required RoHS3 and REACH compliance. The substitute is currently designated as "Active" and is suitable for ongoing and future design inclusion based solely on the status and compliance parameters provided.

Frequently Asked Questions (FAQ)

Q1: What are the critical substitution criteria for the CDZFHT2RA4.3B Zener diode?
A1: Electrical ratings (Zener voltage, tolerance, power, impedance, leakage current), package type (VMN2/SOD-923, 2-SMD Flat Leads), mounting type, and compliance standards (RoHS3, REACH, MSL-1) are the definitive criteria for substitution.

Q2: Is package format important for compatibility?
A2: Yes, mounting type and package outline (VMN2/SOD-923, 2-SMD Flat Leads) must match to ensure physical and process compatibility during board assembly and soldering.

Q3: Does the substitute part CDZT2RA4.3B provide identical electrical performance?
A3: All key electrical parameters are matched: nominal Zener voltage, tolerance, power rating, impedance, reverse leakage, and operating temperature.

Q4: Are there compliance differences to consider?
A4: Both parts are ROHS3 Compliant and REACH Unaffected with MSL 1, ensuring unrestricted handling and regulatory conformity.

Q5: Is automotive qualification (AEC-Q101) matched?
A5: Only the qualification status provided in the part descriptions is indicated; select substitutes should be reviewed for exact certification if such requirements apply.

Q6: Why must an alternative be selected for this part?
A6: The CDZFHT2RA4.3B is designated "Not For New Designs," requiring engineers to utilize active and compliant substitutes for future PCB designs and manufacturing.