UDZS27B Equivalent & Substitute Parts Reference (Zener Diode, 27 V, 200 mW, SOD-323F)

Part Overview

The Taiwan Semiconductor Corporation UDZS27B is an active Zener diode used in surface mount applications, featuring a nominal Zener voltage of 27 V, power rating of 200 mW, ±2% voltage tolerance, and an SOD-323F package. As inventory levels fluctuate or for supply chain risk mitigation, identifying direct electrical and mechanical substitutes is essential to maintain design continuity and guarantee form, fit, and function within the same application space.

Substiute Parts

UDZS27B

Taiwan Semiconductor CorporationIn Stock: 3926UDZS27B Datasheet

Current PartRFQ

UDZS27B R9G

Taiwan Semiconductor CorporationIn Stock: 11062UDZS27B R9G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute relationships for Zener diodes in this category are strictly determined by identical key electrical and mechanical parameters: Zener voltage (27 V), voltage tolerance (±2%), maximum power dissipation (200 mW), maximum impedance (100 Ohms), reverse leakage current at specified test voltage (45 nA at 21 V), identical operating temperature range, and matching surface-mount SOD-323F/SC-90 package. Only those parts matching all these parameters are considered direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both UDZS27B and UDZS27B R9G are active parts, supplied by Taiwan Semiconductor Corporation, and are ROHS3 compliant and REACH unaffected. With matching Zener voltage, tolerance, power rating, impedance, leakage current, operating temperature, and identical mechanical footprint, these devices satisfy all parametric and compliance requirements for substitution in equivalent applications.

Frequently Asked Questions (FAQ)

Q1: What parameters must match to qualify as an equivalent Zener diode substitute in this category?
A1: Zener voltage, voltage tolerance, maximum power dissipation, maximum impedance, reverse leakage current at test voltage, operating temperature range, mounting type, and package/case must all match.

Q2: Are the UDZS27B and UDZS27B R9G compatible in terms of footprint and mounting?
A2: Both parts use the SC-90, SOD-323F surface mount package and supplier device package, ensuring mechanical and PCB footprint compatibility.

Q3: Do both parts offer the same environmental and regulatory compliance?
A3: Yes, both parts are ROHS3 compliant and REACH unaffected.

Q4: Can these substitutes be used interchangeably without changes to the PCB layout?
A4: Identical package and mounting parameters confirm direct physical interchangeability.

Q5: Is there any difference between the main part and the substitute that affects electrical performance?
A5: All provided electrical parameters are identical; no difference is indicated in electrical performance.