UDZS4V7B Zener Diode Equivalent & Substitute Parts

Part Overview

The UDZS4V7B is an active surface mount Zener diode manufactured by Taiwan Semiconductor Corporation, designed for voltage regulation and protection applications. This component operates at a nominal Zener voltage of 4.7 V with 200 mW power dissipation capability in a compact SOD-323F package. The part is ROHS3 compliant and REACH unaffected, making it suitable for modern electronic applications requiring environmental compliance. Substitute parts are identified based on identical electrical specifications and compatible packaging configurations to support procurement flexibility and supply chain continuity.

Substiute Parts

UDZS4V7B

Taiwan Semiconductor CorporationIn Stock: 1210UDZS4V7B Datasheet

Current PartRFQ

UDZS4V7B R9G

Taiwan Semiconductor CorporationIn Stock: 10824UDZS4V7B R9G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UDZS4V7B are identified through parametric equivalence. The substitution logic is based on the following critical parameters that must remain identical:

• Voltage - Zener (Nominal): 4.7 V
• Tolerance: ±2%
• Power - Maximum: 200 mW
• Impedance (Maximum): 80 Ohms
• Current - Reverse Leakage @ Vr: 2.7 µA @ 1 V
• Operating Temperature Range: -55°C to 150°C
• Package / Case: SC-90, SOD-323F
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Substitute parts may differ in packaging format (Tape & Reel versus Cut Tape & Digi-Reel) and inventory availability, but maintain full electrical and mechanical compatibility with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

The UDZS4V7B and UDZS4V7B R9G are parametrically equivalent Zener diodes with identical electrical characteristics and package specifications. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for modern electronics manufacturing.

Selection between these parts is determined by packaging and supply requirements:

• UDZS4V7B (Tape & Reel): Suitable for high-volume automated assembly operations requiring continuous reel feeding.
• UDZS4V7B R9G (Cut Tape & Digi-Reel): Suitable for lower-volume production, prototyping, or applications requiring flexible packaging formats.

Both parts are active products with confirmed inventory availability. The choice between them does not affect circuit performance, thermal characteristics, or regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can UDZS4V7B R9G be used as a direct replacement for UDZS4V7B?

A: Yes. Both parts are parametrically equivalent with identical Zener voltage (4.7 V), power rating (200 mW), tolerance (±2%), impedance (80 Ohms), and operating temperature range (-55°C to 150°C). The only difference is the packaging format.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous reels for automated pick-and-place assembly. Cut Tape & Digi-Reel packaging provides components in smaller quantities on cut tape segments or alternative reel formats, suitable for lower-volume applications or manual assembly.

Q: Are both parts RoHS compliant?

A: Yes. Both UDZS4V7B and UDZS4V7B R9G are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards for electronic component manufacturing.

Q: Do these parts have identical thermal characteristics?

A: Yes. Both parts operate across the same temperature range (-55°C to 150°C junction temperature) and have identical maximum power dissipation (200 mW), ensuring equivalent thermal performance in circuit applications.

Q: Can packaging format affect circuit performance?

A: No. Packaging format (Tape & Reel versus Cut Tape & Digi-Reel) does not affect electrical performance, thermal characteristics, or reliability. The difference is purely in supply and handling logistics.

Q: What is the reverse leakage current specification?

A: Both parts specify a maximum reverse leakage current of 2.7 µA at 1 V reverse bias, ensuring consistent leakage characteristics across equivalent part numbers.