Equivalent & Substitute Parts Reference: SMBJ4752/TR13 (Microchip Technology)

Part Overview

SMBJ4752/TR13 is a surface-mount Zener diode from Microchip Technology, categorized under Diodes, Zener. It features a nominal Zener voltage of 33 V, a maximum power dissipation of 2 W, and a ±10% tolerance. The diode is housed in an SMBJ (DO-214AA) package and is RoHS non-compliant. With an active product status and inventory available, it can be necessary to identify alternative models for compliance, inventory requirements, or improved electrical characteristics.

Key Parameters

Parameter	Main Part: SMBJ4752/TR13
Manufacturer	Microchip Technology
Category	Diodes, Zener
Package / Case	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)
Voltage - Zener (Nom) (Vz)	33 V
Tolerance	±10%
Power - Max	2 W
Impedance (Max) (Zzt)	45 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 25.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts are grouped strictly based on matching the essential electrical and mechanical characteristics, including Zener voltage, package type, mounting style, tolerance, and power rating. Only parts that meet the following key parameters can be considered substitutes for SMBJ4752/TR13:

Zener Voltage (Nom): 33 V
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Tolerance: as specified
Power - Max: as specified
Operating Temperature: as specified
RoHS and compliance status: as specified

Parameter Comparison

Parameter	Main Part: SMBJ4752/TR13	Substitute Part: 1SMB5937BT3G
Manufacturer	Microchip Technology	onsemi
Category	Diodes, Zener	Diodes, Zener
Package / Case	DO-214AA, SMB	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)	SMB
Voltage - Zener (Nom) (Vz)	33 V	33 V
Tolerance	±10%	±5%
Power - Max	2 W	3 W
Impedance (Max) (Zzt)	45 Ohms	33 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 25.1 V	1 µA @ 25.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Substitute parts such as 1SMB5937BT3G from onsemi are active, use the same DO-214AA, SMB package, and match the core electrical specifications, including nominal Zener voltage and operating temperature range. 1SMB5937BT3G offers a RoHS-compliant status compared to the non-compliant main part, which may be relevant for applications requiring environmental certifications.

Frequently Asked Questions (FAQ)

Q1: What are the required parameters for substituting SMBJ4752/TR13?
A1: Substitute selection is determined by matching Zener voltage, package type, mounting style, power rating, tolerance, and operating temperature.

Q2: Is SMB package compatibility mandatory for substitutes?
A2: Yes, substitutes must use the DO-214AA, SMB package to ensure mechanical and soldering compatibility.

Q3: How important is RoHS compliance when selecting substitutes?
A3: RoHS compliance is essential for applications requiring adherence to environmental regulations; substitute parts may differ in RoHS status.

Q4: Can a substitute part with tighter tolerance or higher power rating be used?
A4: Only parts with matching or tighter tolerance and equal or higher power rating are listed, based strictly on the provided parameters.

Q5: Are reverse leakage current and impedance relevant for substitution?
A5: All listed substitutes provide these parameters for direct comparison, as they may be critical for certain circuit requirements.

Q6: Are both tape and reel and cut tape packaging options equivalent for substitution?
A6: Packaging type affects handling and assembly but does not impact the electrical substitutability if the core parameters match.

Q7: Must the operating temperature range be identical for substitute parts?
A7: Yes, substitute parts must match the specified operating temperature range to guarantee reliability under expected conditions.

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