UDZS27B RRG Equivalent & Substitute Parts

Part Overview

The UDZS27B RRG is a surface mount Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 27 V nominal Zener voltage with 200 mW maximum power dissipation. This component operates across the temperature range of -55°C to 150°C and is packaged in the SOD-323F form factor. The part maintains Active product status and carries ROHS3 compliance certification.

Equivalent and substitute parts are identified to address inventory availability, procurement lead times, or specific packaging requirements while maintaining electrical and mechanical compatibility within the defined parameter tolerances for this Zener diode category.

Substiute Parts

UDZS27B RRG

Taiwan Semiconductor CorporationIn Stock: 646UDZS27B RRG Datasheet

Current PartRFQ

UDZS27B R9G

Taiwan Semiconductor CorporationIn Stock: 11062UDZS27B R9G Datasheet

Parametric EquivalentRFQ

MM3Z27VB

onsemiIn Stock: 29245MM3Z27VB Datasheet

SimilarRFQ

UDZSTE-1727B

Rohm SemiconductorIn Stock: 26358UDZSTE-1727B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of Zener diodes is determined by equivalence in the following critical parameters: nominal Zener voltage (27 V), maximum power rating (200 mW), package form factor (SOD-323F), surface mount mounting type, and compliance certifications (ROHS3). Tolerance variations and impedance differences are secondary considerations that do not preclude substitution when primary electrical specifications align.

The substitute parts identified below maintain the core electrical characteristics and physical packaging required for direct replacement in circuit applications. Packaging format (Tape & Reel versus Cut Tape) represents a procurement distinction and does not affect electrical performance or board-level compatibility.

Critical Substitution Parameters:

• Nominal Zener Voltage: 27 V
• Maximum Power Dissipation: 200 mW
• Package Type: SOD-323F
• Mounting Configuration: Surface Mount
• Compliance: ROHS3 Compliant

Parameter Comparison

Engineering Selection Recommendations

UDZS27B R9G (Taiwan Semiconductor Corporation) is a parametric equivalent to the UDZS27B RRG. Both parts share identical electrical specifications including 27 V nominal Zener voltage, ±2% tolerance, 200 mW power rating, 100 Ohms maximum impedance, and 45 nA reverse leakage current. The distinction between these parts is packaging format: UDZS27B R9G is supplied in Tape & Reel format while UDZS27B RRG is supplied in Reel format. Both maintain ROHS3 compliance and identical operating temperature ranges. This substitution is direct for applications where packaging format does not impose procurement constraints.

MM3Z27VB (onsemi) is a similar Zener diode substitute with 27 V nominal voltage and 200 mW power rating in SOD-323F packaging. This part exhibits lower maximum impedance (75 Ohms versus 100 Ohms) and an extended lower operating temperature limit (-65°C versus -55°C). The reverse leakage current specification differs slightly (45 nA @ 18.9 V). MM3Z27VB maintains ROHS3 compliance and is suitable for applications requiring the specified electrical characteristics within the SOD-323F form factor.

UDZSTE-1727B (Rohm Semiconductor) is a similar Zener diode substitute with 27 V nominal voltage and 200 mW power rating. This part carries a ±3% tolerance specification (compared to ±2% for the main part) and exhibits higher maximum impedance (150 Ohms). The reverse leakage current is specified at 100 nA @ 21 V, representing a higher leakage characteristic. UDZSTE-1727B is supplied in Cut Tape format and maintains ROHS3 compliance. This substitution is applicable where the tolerance and impedance variations are acceptable for the circuit application.

All substitute parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can UDZS27B R9G be used as a direct replacement for UDZS27B RRG?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (27 V, ±2%, 200 mW, 100 Ohms impedance). The difference is packaging format: UDZS27B R9G is Tape & Reel while UDZS27B RRG is Reel. Both are surface mount SOD-323F components suitable for direct board-level substitution.

Q: What are the key differences between MM3Z27VB and the main part UDZS27B RRG?

A: MM3Z27VB shares the same 27 V nominal voltage, ±2% tolerance, and 200 mW power rating. Differences include lower maximum impedance (75 Ohms versus 100 Ohms), extended lower operating temperature (-65°C versus -55°C), and reverse leakage current specified at a different reference voltage (18.9 V versus 21 V). The part is manufactured by onsemi and supplied in Tape & Reel format.

Q: Is UDZSTE-1727B suitable as a substitute despite the ±3% tolerance specification?

A: UDZSTE-1727B is suitable for applications where ±3% tolerance is acceptable. The part maintains 27 V nominal voltage and 200 mW power rating in SOD-323F packaging. The higher impedance (150 Ohms) and increased reverse leakage current (100 nA) represent secondary parameter variations that do not preclude substitution when circuit design tolerances accommodate these differences.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All substitute parts use the SOD-323F package form factor (SC-90 case style), ensuring identical PCB footprint and mounting compatibility. Packaging format differences (Tape & Reel versus Cut Tape) affect procurement and handling but not board-level physical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. UDZS27B R9G, MM3Z27VB, and UDZSTE-1727B all carry ROHS3 compliance certification. All parts maintain Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, ensuring regulatory alignment with the original UDZS27B RRG component.

Q: What is the operating temperature range for each substitute part?

A: UDZS27B RRG, UDZS27B R9G, and UDZSTE-1727B operate across -55°C to 150°C. MM3Z27VB extends the lower temperature limit to -65°C, providing a wider operating range suitable for applications requiring enhanced low-temperature performance.