Equivalent & Substitute Parts Reference for SMBJ5366AE3/TR13

Part Overview

SMBJ5366AE3/TR13 is a Zener diode manufactured by Microchip Technology, categorized under Diodes, Zener. This component features a nominal Zener voltage of 39 V, maximum power dissipation of 5 W, and is designed for surface mount applications in the DO-214AA (SMBJ) package. The part is RoHS3 compliant, REACH unaffected, and holds an active product status. Sourcing alternatives is necessary to ensure design flexibility, supply chain stability, and to address lead time or inventory availability challenges without altering form, fit, or function.

Key Parameters

Parameter	SMBJ5366AE3/TR13
Voltage - Zener (Nom) (Vz)	39 V
Tolerance	±10%
Power - Max	5 W
Impedance (Max) (Zzt)	14 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 28.1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitute Zener diodes are grouped strictly based on electrical and mechanical parameters that allow direct drop-in replacement for SMBJ5366AE3/TR13. These key parameters include:

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 and REACH Status
Product Status

Only parts matching these listed attributes are considered as equivalents or substitutes.

Parameter Comparison

Parameter	SMBJ5366AE3/TR13 (Microchip Technology)	1SMB5939B-13 (Diodes Incorporated)	1SMB5939BT3G (onsemi)
Voltage - Zener (Nom) (Vz)	39 V	39 V	39 V
Tolerance	±10%	±5%	±5%
Power - Max	5 W	3 W	3 W
Impedance (Max) (Zzt)	14 Ohms	45 Ohms	45 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 28.1 V	1 µA @ 29.7 V	1 µA @ 29.7 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All listed substitute Zener diodes (1SMB5939B-13 and 1SMB5939BT3G) have an active product status and comply with ROHS3 and REACH requirements. Inventory status is provided for each part. Select based on matching compliance, inventory needs, and package compatibility.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for selecting a substitute for SMBJ5366AE3/TR13?
A1: Substitute selection is based strictly on Zener voltage, tolerance, maximum power rating, impedance, reverse leakage current, forward voltage, operating temperature, mounting type, and package/case, as well as product and environmental compliance status.

Q2: Are the suggested substitute Zener diodes in the same physical package?
A2: Yes, both 1SMB5939B-13 and 1SMB5939BT3G are in the DO-214AA, SMB surface mount package, matching SMBJ5366AE3/TR13.

Q3: Does compliance status differ among the listed parts?
A3: All parts are RoHS3 compliant and REACH unaffected.

Q4: Are the maximum power ratings identical between SMBJ5366AE3/TR13 and its substitutes?
A4: No, SMBJ5366AE3/TR13 has a maximum power rating of 5 W, while 1SMB5939B-13 and 1SMB5939BT3G are rated at 3 W.

Q5: Can mounting and footprint remain unchanged with these substitutes?
A5: Yes, all listed substitutes are surface mount devices in DO-214AA (SMB) package, which supports direct footprint compatibility.

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