Equivalent & Substitute Parts Reference: UDZS3V9B

Part Overview

The UDZS3V9B is a Zener diode produced by Taiwan Semiconductor Corporation, categorized under Diodes, Zener. This component features a nominal Zener voltage of 3.9 V, a maximum power dissipation of 200 mW, and a maximum impedance of 90 Ohms, with a ±2% voltage tolerance. It comes in a SOD-323F surface mount package and is compliant with RoHS3. This part is currently active, but identifying alternatives is necessary to ensure continuous supply, enable design flexibility, and provide sourcing options based on inventory requirements or supply chain constraints.

Substiute Parts

UDZS3V9B

Taiwan Semiconductor CorporationIn Stock: 1242UDZS3V9B Datasheet

Current PartRFQ

UDZS3V9B RRG

Taiwan Semiconductor CorporationIn Stock: 7061UDZS3V9B RRG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute candidates are selected by matching the following key parameters: nominal Zener voltage (3.9 V), voltage tolerance (±2%), maximum power dissipation (200 mW), maximum impedance (90 Ohms), current reverse leakage (2.7 µA @ 1 V), temperature range (−55°C to 150°C), package (SC-90, SOD-323F), mounting type (Surface Mount), RoHS and REACH status, and part status (Active). Only devices matching all these criteria are included as substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both UDZS3V9B and UDZS3V9B RRG are currently active and listed as ROHS3 Compliant and REACH Unaffected. The ECCN and HTSUS codes match, as do all core electrical and mechanical parameters. Either part meets compliance requirements and can be selected where strict adherence to these criteria is required.

Frequently Asked Questions (FAQ)

Q: What are the primary criteria for selecting a substitute for UDZS3V9B?
A: Selection is based on Zener voltage, tolerance, power rating, impedance, reverse leakage current, operating temperature, mounting type, package, and compliance status.

Q: Are UDZS3V9B and UDZS3V9B RRG functionally identical?
A: All specified electrical and mechanical parameters, as well as compliance statuses, match for UDZS3V9B and UDZS3V9B RRG.

Q: Does the package size of the substitute part match the original?
A: Both parts use the SC-90, SOD-323F surface mount package.

Q: Are there any differences in quality compliance between the main and substitute parts?
A: Both parts are ROHS3 Compliant and REACH Unaffected per the provided information.

Q: Is there any difference in availability between the main and substitute part?
A: Based on the provided inventory, UDZS3V9B RRG has a higher in-stock quantity than UDZS3V9B.