Equivalent & Substitute Parts for CDZT2RA9.1B Zener Diode

Part Overview

The CDZT2RA9.1B, manufactured by Rohm Semiconductor, is a surface-mount Zener diode specified for 9.1 V nominal Zener voltage and a maximum power dissipation of 100 mW, supplied in VMN2 (SOD-923) package. The part is classified as active, RoHS3 compliant, and REACH unaffected. With the potential for changes in supply chain availability, system design may require evaluation of alternative parts to maintain production continuity and compliance.

Substiute Parts

CDZT2RA9.1B

Rohm SemiconductorIn Stock: 6678CDZT2RA9.1B Datasheet

Current PartRFQ

CDZVT2R9.1B

Rohm SemiconductorIn Stock: 15301CDZVT2R9.1B Datasheet

SimilarRFQ

CDZT2RA9.1B

Rohm SemiconductorIn Stock: 6678CDZT2RA9.1B Datasheet

Parametric EquivalentRFQ

BZT585B9V1T-7

Diodes IncorporatedIn Stock: 4328BZT585B9V1T-7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are determined strictly by matching electrical and mechanical parameters including the Zener voltage, power rating, reverse leakage current, package type, and regulatory compliance. Parts are selected from the Diodes, Zener category and are surface-mount devices with a nominal Zener voltage of 9.1 V and reverse leakage current of 500 nA @ 6 V. Only components listed as active with matching compliance certifications are eligible for substitution.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute Zener diodes (CDZT2RA9.1B, CDZVT2R9.1B, BZT585B9V1T-7) are active, RoHS3 compliant, REACH unaffected, and classified with MSL 1 (Unlimited). These regulatory and status parameters match the main part number requirements and are suitable for selection where part status and compliance are the deciding factors.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters to match when selecting a substitute for CDZT2RA9.1B?
A: Key parameters are nominal Zener voltage (9.1 V), power rating (minimum 100 mW), reverse leakage current (500 nA @ 6 V), mounting type (surface mount), package equivalence, and compliance certifications (RoHS3, REACH).

Q: Are the substitute parts supplied in equivalent surface-mount packages?
A: CDZT2RA9.1B and CDZVT2R9.1B use VMN2/SOD-923 variants; BZT585B9V1T-7 uses SOD-523, which is also a surface-mount package. Both are compatible within the general device category but differ in physical footprint.

Q: Does power rating difference affect suitability?
A: Substitute parts meet or exceed the specified minimum value of 100 mW. BZT585B9V1T-7 offers 350 mW maximum power.

Q: Why is compliance important in substitution?
A: RoHS3 and REACH compliance are mandatory for most modern electronics applications to ensure regulatory compatibility and supply chain consistency.

Q: Is tolerance matched across all substitutes?
A: Tolerance is specified for CDZT2RA9.1B (±2.09%) and BZT585B9V1T-7 (±2%); it is not specified for CDZVT2R9.1B. Matching tolerance is critical for circuits sensitive to voltage accuracy.

Q: Are all substitute parts active and available?
A: All listed components have active status and available inventory quantities as stated in the input parameters.