SMBJ24AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ24AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, classified as a Zener-type device in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications, offering a 24V reverse standoff voltage with a maximum clamping voltage of 38.9V at peak pulse current. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when alternative sourcing from qualified manufacturers provides equivalent electrical and mechanical performance within specified parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	24	V
Voltage - Breakdown (Min)	26.7	V
Voltage - Clamping (Max) @ Ipp	38.9	V
Current - Peak Pulse (10/1000µs)	15.4	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65°C to 150°C	TJ
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SMBJ24AE3/TR13 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Voltage - Reverse Standoff (Typ): 24V
Voltage - Breakdown (Min): 26.7V
Voltage - Clamping (Max) @ Ipp: 38.9V
Power - Peak Pulse: 600W
Type: Zener
Unidirectional Channels: 1

Mechanical Parameters (Must Match):

Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Acceptable Variation:

Current - Peak Pulse (10/1000µs): 15.4A to 16A (within 3.9% tolerance)
Operating Temperature Range: Minimum -55°C to -65°C; Maximum 150°C to 175°C (extended ranges acceptable)

All substitute parts listed maintain identical electrical performance within the specified voltage and power parameters, identical mechanical compatibility with DO-214AA SMB packaging, and equivalent compliance certifications. Peak pulse current variations of up to 16A are acceptable as they represent minor manufacturing tolerance differences while maintaining the 600W power dissipation specification.

Parameter Comparison

Manufacturer	Part Number	Vwm (V)	Vbr (Min) (V)	Vc (Max) (V)	Ipp (A)	Ppk (W)	Tj Range (°C)	Package	RoHS
Microchip Technology	SMBJ24AE3/TR13	24	26.7	38.9	15.4	600	-65 to 150	DO-214AA, SMB	ROHS3
Central Semiconductor Corp	1SMB24A TR13 PBFREE	24	26.7	38.9	15.4	600	-65 to 150	DO-214AA, SMB	ROHS3
MDD	SMBJ24A	24	26.7	38.9	15.5	600	-50 to 150	DO-214AA, SMB	ROHS3
Diodes Incorporated	SMBJ24A-13-F	24	26.7	38.9	15.4	600	-55 to 150	DO-214AA, SMB	ROHS3
Vishay General Semiconductor - Diodes Division	SMBJ24A-E3/52	24	26.7	38.9	15.4	600	-55 to 150	DO-214AA, SMB	ROHS3
Micro Commercial Co	SMBJ24A-TP	24	26.7	38.9	15.4	600	-55 to 175	DO-214AA, SMB	ROHS3
Panjit International Inc.	P6SMBJ24AS_R1_00001	24	26.7	38.9	15.5	600	-55 to 150	DO-214AA, SMB	ROHS3
STMicroelectronics	SMBJ24A-TR	24	26.7	38.9	16	600	-55 to 150	DO-214AA, SMB	ROHS3
Littelfuse Inc.	SZ1SMB24AT3G	24	26.7	38.9	15.4	600	-65 to 150	DO-214AA, SMB	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical equivalence to the SMBJ24AE3/TR13 across critical performance parameters. Selection among these alternatives is based on the following factors:

Direct Electrical Equivalents (Ipp = 15.4A):

Central Semiconductor Corp 1SMB24A TR13 PBFREE: Identical specifications with matching temperature range (-65°C to 150°C)
Diodes Incorporated SMBJ24A-13-F: Equivalent performance with -55°C to 150°C operating range
Vishay General Semiconductor SMBJ24A-E3/52: Equivalent performance with -55°C to 150°C operating range
Littelfuse Inc. SZ1SMB24AT3G: Identical specifications with matching temperature range (-65°C to 150°C); includes automotive qualification (AEC-Q101)

Minor Peak Current Variation (Ipp = 15.5A to 16A):

MDD SMBJ24A: 15.5A peak pulse current with -50°C to 150°C operating range
Panjit International Inc. P6SMBJ24AS_R1_00001: 15.5A peak pulse current with -55°C to 150°C operating range
STMicroelectronics SMBJ24A-TR: 16A peak pulse current with -55°C to 150°C operating range

Extended Temperature Range:

Micro Commercial Co SMBJ24A-TP: Supports -55°C to 175°C operating range, providing thermal margin for high-temperature applications

All substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage conditions. Selection should prioritize parts with operating temperature ranges that meet or exceed application requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ24A-TP be used as a direct replacement for SMBJ24AE3/TR13?

A: Yes. The SMBJ24A-TP from Micro Commercial Co meets all critical electrical parameters (24V standoff, 38.9V clamping, 600W peak power) and mechanical requirements (DO-214AA SMB package, surface mount). The extended operating temperature range (-55°C to 175°C) provides additional thermal capability. Both parts are ROHS3 compliant with MSL 1 rating.

Q: What is the significance of the peak pulse current variation between 15.4A and 16A?

A: Peak pulse current variations within this range (15.4A to 16A) represent normal manufacturing tolerances for TVS diodes while maintaining the 600W peak power specification. All listed substitutes with these current ratings deliver equivalent transient suppression performance and are electrically interchangeable.

Q: Is the Littelfuse SZ1SMB24AT3G suitable for automotive applications?

A: The SZ1SMB24AT3G carries AEC-Q101 automotive qualification and meets all electrical and mechanical specifications of the SMBJ24AE3/TR13. It is suitable for applications requiring automotive-grade components.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not prevent substitution if the substitute part's range meets or exceeds application requirements. The SMBJ24AE3/TR13 operates from -65°C to 150°C. Substitutes with ranges of -55°C to 150°C or -50°C to 150°C are acceptable for applications within these narrower ranges. The SMBJ24A-TP with -55°C to 175°C range provides extended capability for high-temperature environments.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Most substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) packaging suitable for automated assembly. Packaging format should be confirmed with the specific manufacturer or distributor based on production requirements.

Q: What compliance certifications apply to all listed substitutes?

A: All substitute parts listed carry ROHS3 compliance and REACH Unaffected status. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: Can MDD SMBJ24A be used in applications requiring the full -65°C to 150°C temperature range?

A: The MDD SMBJ24A operates from -50°C to 150°C, which does not cover the full lower temperature range of the SMBJ24AE3/TR13 (-65°C). For applications requiring operation below -50°C, select alternatives such as Central Semiconductor Corp 1SMB24A TR13 PBFREE or Littelfuse Inc. SZ1SMB24AT3G, both rated to -65°C.

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