Equivalent & Substitute Parts for SMBJ4743A/TR13

Part Overview

The SMBJ4743A/TR13 is a Zener diode from Microchip Technology, categorized under Diodes, Zener. It features a nominal Zener voltage of 13 V, a maximum power dissipation of 2 W, and comes in a surface mount DO-214AA (SMB) package. The product status is Active. Identifying alternative or substitute Zener diodes is necessary when considering product lifecycle management, supply chain continuity, and regulatory compliance (RoHS/REACH), especially since the SMBJ4743A/TR13 is RoHS non-compliant.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	13 V
Tolerance	±5%
Power - Max	2 W
Impedance (Max) (Zzt)	10 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 9.9 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)
RoHS Status	RoHS non-compliant
REACH Status	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts are grouped strictly based on matching the following key parameters: Voltage - Zener (Nom) (Vz), Tolerance, mounting type, package/case, and similar power or higher. Only parts with the same nominal Zener voltage (13 V), ±5% tolerance, surface mount DO-214AA (SMB) package, and equal or greater maximum power dissipation are considered substitutes.

Parameter Comparison

Parameter	SMBJ4743A/TR13 (Microchip Technology)	1SMB5928B-13 (Diodes Incorporated)	CZRB5350B-HF (Comchip Technology)
Voltage - Zener (Nom) (Vz)	13 V	13 V	13 V
Tolerance	±5%	±5%	±5%
Power - Max	2 W	3 W	5 W
Impedance (Max) (Zzt)	10 Ohms	7 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 9.9 V	1 µA @ 9.9 V	1 µA @ 9.9 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Selection based on product status, RoHS compliance, and REACH status indicates that 1SMB5928B-13 and CZRB5350B-HF are suitable alternatives for SMBJ4743A/TR13 when RoHS compliance is required. All parts have an Active production status and are REACH Unaffected. The moisture sensitivity level (MSL 1) is consistent across all models.

Frequently Asked Questions (FAQ)

Q1: What parameters must match for substituting Zener diodes in the DO-214AA (SMB) package?
A1: Key parameters include the nominal Zener voltage (Vz), tolerance, power rating (minimum required or higher), mounting type, and package/case.

Q2: Do all substitute parts fit physically and electrically in place of SMBJ4743A/TR13?
A2: All substitute parts are surface mount devices in the DO-214AA (SMB) package and match the key electrical parameters provided.

Q3: Is there any difference in environmental compliance among the parts?
A3: SMBJ4743A/TR13 is RoHS non-compliant, while 1SMB5928B-13 and CZRB5350B-HF are ROHS3 compliant. All are REACH Unaffected.

Q4: Are there variations in maximum power ratings among the substitute Zener diodes?
A4: 1SMB5928B-13 and CZRB5350B-HF have higher maximum power ratings (3 W and 5 W, respectively) compared to SMBJ4743A/TR13 (2 W).

Q5: What other considerations are necessary for surface mount Zener diode substitution in the DO-214AA package?
A5: Mechanical dimensions and mounting style are consistent across all listed models; refer only to specified parameters for compatibility.

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