Equivalent & Substitute Parts for SMBJ4762A/TR13 Zener Diode

Part Overview

SMBJ4762A/TR13 from Microchip Technology is an active surface mount Zener diode. It features an 82 V nominal Zener voltage, 2 W power rating, ±5% tolerance, and is packaged in DO-214AA (SMB). Identifying substitute parts for SMBJ4762A/TR13 is essential when inventory is limited, when seeking RoHS compliance, or when continuity of supply is required for Diodes, Zener product designs.

Key Parameters

Parameter	Description
Voltage - Zener (Nom) (Vz)	Nominal breakdown voltage
Tolerance	Voltage deviation allowed
Power - Max	Maximum power dissipation
Impedance (Max) (Zzt)	Maximum dynamic impedance
Current - Reverse Leakage @ Vr	Leakage current at specified reverse voltage
Voltage - Forward (Vf) (Max) @ If	Maximum forward voltage at specified current
Operating Temperature	Qualified ambient temperature range
Mounting Type	Physical mounting configuration
Package / Case	Physical package format
RoHS Status	Restriction of hazardous substances compliance
Moisture Sensitivity Level (MSL)	Handling and storage requirements for soldering
REACH Status	Regulatory compliance for chemical content
Product Status	Availability for active design

Substitute Part Grouping Explanation

Substitute parts for Zener diodes in the DO-214AA (SMB) category must precisely match required electrical and mechanical parameters provided. The substitute group is derived by ensuring the following parameters are identical or within allowed ranges:

Voltage - Zener (Nom) (Vz)
Tolerance
Power - Max
Impedance (Max) (Zzt)
Current - Reverse Leakage @ Vr
Voltage - Forward (Vf) (Max) @ If
Operating Temperature
Mounting Type
Package / Case
RoHS Status
Moisture Sensitivity Level (MSL)
REACH Status
Product Status

Parameter Comparison

Parameter	SMBJ4762A/TR13 (Microchip Technology)	CZRB5375B-HF (Comchip Technology)
Voltage - Zener (Nom) (Vz)	82 V	82 V
Tolerance	±5%	±5%
Power - Max	2 W	5 W
Impedance (Max) (Zzt)	200 Ohms	65 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 62.2 V	500 nA @ 62.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both SMBJ4762A/TR13 and CZRB5375B-HF are active and available for procurement. For applications requiring RoHS compliance, CZRB5375B-HF meets ROHS3 standards. Both part numbers are classified as MSL 1 (Unlimited) and are REACH unaffected. The mechanical package is consistent, and all critical electrical parameters match within the specified values.

Frequently Asked Questions (FAQ)

What parameters are critical for substituting Zener diodes in the DO-214AA (SMB) category?

The critical substitution criteria include nominal Zener voltage, tolerance, maximum power, dynamic impedance, reverse leakage current at the rated voltage, maximum forward voltage at specified current, operating temperature range, mounting type, and package/case format.

Are the CZRB5375B-HF and SMBJ4762A/TR13 mechanically interchangeable?

Both components are supplied in the DO-214AA, SMB package and are intended for surface mount applications, ensuring mechanical compatibility.

How does RoHS and REACH compliance affect part selection for these Zener diodes?

CZRB5375B-HF is ROHS3 compliant, while SMBJ4762A/TR13 is RoHS non-compliant. Both parts are REACH unaffected. Selection should be based on project regulatory requirements.

Does the power rating difference affect substitution eligibility?

CZRB5375B-HF has a higher power rating (5 W vs 2 W), which does not prevent substitution since all other key electrical parameters are met.

What if the operating temperature range differs slightly?

SMBJ4762A/TR13 operates from -65°C to 150°C, while CZRB5375B-HF operates from -55°C to 150°C. For applications within -55°C to 150°C, both are applicable as substitutes based on the provided data.

Are there any distinctions in moisture sensitivity or handling requirements?

Both diodes are classified as Moisture Sensitivity Level 1 (Unlimited), requiring no special handling for soldering or reflow processes.

Can reverse leakage specifications influence substitution choice?

Both parts specify reverse leakage at the same test voltage, with CZRB5375B-HF exhibiting lower leakage current. This meets or exceeds the criteria set by SMBJ4762A/TR13.

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