SMBJ15AE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ15AE3/TR13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 15V reverse standoff voltage and 24.4V maximum clamping voltage. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching electrical performance parameters within the allowed tolerances for this TVS diode category, including reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and power dissipation ratings.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	15	V
Voltage - Breakdown (Min)	16.7	V
Voltage - Clamping (Max) @ Ipp	24.4	V
Current - Peak Pulse (10/1000µs)	24	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65°C to 150°C	TJ
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the SMBJ15AE3/TR13 are classified based on electrical parameter compatibility within the TVS diode category. The substitution logic is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Reverse Standoff (Typ): 15V
Voltage - Breakdown (Min): 16.7V
Voltage - Clamping (Max) @ Ipp: 24.4V (±0.8V tolerance acceptable)
Current - Peak Pulse (10/1000µs): 24A (±1.1A tolerance acceptable)
Power - Peak Pulse: 600W
Type: Zener, Unidirectional
Mounting Type: Surface Mount
Operating Temperature: -55°C to -65°C minimum, 150°C maximum

Secondary Compatibility Factors:

Package / Case: DO-214AA or DO-214AC (SMB or SMA)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: MSL 1 (Unlimited)
Product Status: Active

Parts are grouped into two categories: Direct Equivalents (identical electrical and package specifications) and Similar Substitutes (matching electrical parameters with minor package or current rating variations within acceptable engineering tolerances).

Parameter Comparison

Part Number	Manufacturer	Vstandoff (Typ)	Vbreakdown (Min)	Vclamping (Max)	Ipp (10/1000µs)	Power (Peak)	Temp Range	Package	Status
SMBJ15AE3/TR13	Microchip Technology	15V	16.7V	24.4V	24A	600W	-65°C to 150°C	DO-214AA, SMB	Active
SMBJ15A	EVVO Semi	15V	16.7V	24.4V	24.6A	600W	-65°C to 150°C	DO-214AC, SMA	Active
SMBJ15A-13-F	Diodes Incorporated	15V	16.7V	24.4V	24A	600W	-55°C to 150°C	DO-214AA, SMB	Active
SACB15	Littelfuse Inc.	15V	16.7V	23.6V	20A	500W	-55°C to 150°C	DO-214AA, SMB	Active
SMBJ15A-TR	STMicroelectronics	15V	16.7V	24.4V	25.1A	600W	-55°C to 150°C	DO-214AA, SMB	Active
SZ1SMB15AT3G	Littelfuse Inc.	15V	16.7V	24.4V	24A	600W	-65°C to 150°C	DO-214AA, SMB	Active

Engineering Selection Recommendations

Direct Equivalents (Highest Compatibility):

SMBJ15A-13-F (Diodes Incorporated) and SZ1SMB15AT3G (Littelfuse Inc.) provide the closest electrical and mechanical compatibility to the SMBJ15AE3/TR13. Both parts maintain identical clamping voltage (24.4V), peak pulse current (24A), and power dissipation (600W) specifications. SMBJ15A-13-F operates within a reduced temperature range (-55°C to 150°C) compared to the original part (-65°C to 150°C). SZ1SMB15AT3G maintains the full temperature range and includes AEC-Q101 automotive qualification with documented capacitance specification (1020pF @ 1MHz).

Compatible Substitutes (Acceptable Performance):

SMBJ15A-TR (STMicroelectronics) matches all critical electrical parameters with a slightly elevated peak pulse current rating (25.1A versus 24A), providing additional margin. Operating temperature range is -55°C to 150°C. This part is available in DO-214AA SMB package and carries TRANSIL™ series designation.

SMBJ15A (EVVO Semi) provides electrical equivalence with peak pulse current of 24.6A and full temperature range (-65°C to 150°C). Package configuration is DO-214AC SMA, which differs from the original SMB package and may require PCB layout modification.

Limited Substitutes (Parameter Deviations):

SACB15 (Littelfuse Inc.) exhibits reduced electrical performance with clamping voltage of 23.6V (0.8V below specification) and peak pulse current of 20A (4A below specification), resulting in 500W peak power versus 600W. This part is suitable only for applications with relaxed current and power requirements. Operating temperature range is -55°C to 150°C.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and active production status.

Frequently Asked Questions (FAQ)

Q: Can SMBJ15A (EVVO Semi) be used as a direct replacement for SMBJ15AE3/TR13?

A: SMBJ15A provides electrical equivalence with matching clamping voltage (24.4V), peak pulse current (24.6A), and full operating temperature range (-65°C to 150°C). However, the package differs: SMBJ15A uses DO-214AC SMA configuration while SMBJ15AE3/TR13 uses DO-214AA SMB. PCB footprint and land pattern modifications are required for substitution.

Q: What is the difference between SMBJ15A-13-F and SMBJ15AE3/TR13?

A: Both parts share identical electrical specifications (24.4V clamping, 24A peak pulse current, 600W power). SMBJ15A-13-F operates over -55°C to 150°C temperature range versus -65°C to 150°C for the original part. Both use DO-214AA SMB package. The reduced low-temperature specification may be acceptable depending on application requirements.

Q: Is SZ1SMB15AT3G suitable for automotive applications?

A: SZ1SMB15AT3G carries AEC-Q101 automotive qualification and is designated as automotive grade. It provides full electrical equivalence to SMBJ15AE3/TR13 with identical clamping voltage (24.4V), peak pulse current (24A), power dissipation (600W), and operating temperature range (-65°C to 150°C). Capacitance is specified at 1020pF @ 1MHz.

Q: Why does SACB15 have lower peak pulse current (20A) than SMBJ15AE3/TR13 (24A)?

A: SACB15 is a different product line from Littelfuse with inherently different electrical characteristics. While maintaining the same 15V reverse standoff voltage and 16.7V breakdown voltage, the clamping voltage is 23.6V and peak pulse current is 20A, resulting in 500W peak power versus 600W. This part is suitable only for applications with lower transient current requirements.

Q: Can SMBJ15A-TR replace SMBJ15AE3/TR13 in all applications?

A: SMBJ15A-TR (STMicroelectronics) provides superior electrical performance with peak pulse current of 25.1A (1.1A above specification) and maintains 24.4V clamping voltage and 600W power dissipation. Operating temperature range is -55°C to 150°C. The elevated current rating provides additional design margin and is compatible with applications designed for SMBJ15AE3/TR13.

Q: What packaging considerations apply when selecting substitute parts?

A: SMBJ15AE3/TR13 uses DO-214AA SMB package. Direct package equivalents include SMBJ15A-13-F, SMBJ15A-TR, SACB15, and SZ1SMB15AT3G. SMBJ15A (EVVO Semi) uses DO-214AC SMA package, which has different footprint dimensions and requires PCB redesign. Verify PCB land pattern compatibility before component selection.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ15AE3/TR13 specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message