TFZTR4.7B Equivalent & Substitute Parts Reference

Part Overview

TFZTR4.7B (Rohm Semiconductor) is a surface-mount Zener diode with a nominal Zener voltage of 4.7 V and a maximum power rating of 500 mW. Key electrical characteristics are defined, including its voltage, tolerance, impedance, reverse leakage, and thermal range. The product status is “Not For New Designs,” necessitating the identification of alternate models to support ongoing or future designs where direct procurement of TFZTR4.7B may no longer be viable.

Key Parameters

Manufacturer Part Number	Voltage - Zener (Vz) (Nom)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status
TFZTR4.7B	4.7 V	±2.66%	500 mW	25 Ohms	5 µA @ 1 V	150°C (TJ)	Surface Mount	2-SMD, Flat Leads	TUMD2	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Substitute Part Grouping Explanation

Substitute selection is restricted to components matching the principal functional requirements and parameters. Allowable substitutes are grouped according to:

Nominal Zener Voltage
Power Rating
Tolerance
Zener Impedance
Reverse Leakage Current
Mounting Type
Package Style
Environmental/Compliance Certifications

All substitutes listed share essential operational and regulatory parameters and are thus eligible for equivalency.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Zener (Vz) (Nom)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	MSL	REACH Status	Product Status
TFZTR4.7B	Rohm Semiconductor	4.7 V	±2.66%	500 mW	25 Ohms	5 µA @ 1 V	150°C (TJ)	Surface Mount	2-SMD, Flat Leads	TUMD2	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Not For New Designs
TFZVTR4.7B	Rohm Semiconductor	4.7 V	-	500 mW	25 Ohms	5 µA @ 1 V	-55°C ~ 150°C	Surface Mount	2-SMD, Flat Lead	TUMD2M	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
BZX84J-C4V7,115	Nexperia USA Inc.	4.7 V	±5%	550 mW	80 Ohms	3 µA @ 2 V	-65°C ~ 150°C	Surface Mount	SC-90, SOD-323F	SOD-323F	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
DDZ4V7BSF-7	Diodes Incorporated	4.68 V	±3%	500 mW	130 Ohms	10 µA @ 1 V	-65°C ~ 150°C	Surface Mount	SC-90, SOD-323F	SOD-323F	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Discontinued at Digi-Key

Engineering Selection Recommendations

Based on product status, only active and compliant substitutes should be selected for new designs. All substitute parts listed are ROHS3 compliant, with an unlimited moisture sensitivity level (MSL 1) and REACH unaffected status. Confirm selection based strictly on matching or exceeding required environmental and compliance certifications.

Frequently Asked Questions (FAQ)

Q1: What are the main substitution criteria for Zener diodes in this series?
A1: Substitution is governed by matching voltage, power rating, tolerance, impedance, reverse leakage, mounting type, package style, and regulatory compliance.

Q2: How critical is the package when considering substitutes?
A2: Package and mounting type must match for mechanical compatibility in surface-mount applications. Ensure pad layout compatibility between TUMD2, TUMD2M, and SOD-323F packages.

Q3: Can substitutes with different tolerances or impedance be used?
A3: Only select substitutes within the allowed parameter range for tolerance, impedance, and voltage, as these affect circuit performance.

Q4: How do compliance statuses affect selection?
A4: ROHS3 compliance, REACH status, and moisture sensitivity level (MSL) must align with application and regulatory requirements.

Q5: Are discontinued parts suitable for new designs?
A5: Discontinued components should be avoided for new designs; use only parts listed as active for future-proof component selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message