SMBJ15A-13 Equivalent & Substitute Parts

Part Overview

The SMBJ15A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the SMB (DO-214AA) 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 at peak pulse current.

The SMBJ15A-13 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers, offering identical or comparable electrical performance with improved product status and compliance certifications.

Key Parameters

Parameter	Value	Unit
Type	Zener TVS Diode	—
Unidirectional Channels	1	—
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	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ15A-13 are grouped based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 15V
Voltage - Breakdown (Min): 16.7V
Voltage - Clamping (Max) @ Ipp: 24.4V (±0.2V tolerance acceptable)
Current - Peak Pulse (10/1000µs): ≥24A
Power - Peak Pulse: ≥600W
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Package Compatibility:

SMB package (DO-214AA) substitutes maintain identical footprint and pinout
SMA package (DO-214AC) substitutes require PCB layout modification but maintain electrical equivalence
SOD-128 package substitutes require significant PCB redesign

Substitute parts are classified as direct equivalents when all electrical parameters match within specified tolerances and packaging is identical. Parts with different packages are listed as functional equivalents requiring design consideration.

Parameter Comparison

Parameter	SMBJ15A-13 (Diodes Inc.)	SMBJ15A-13-F (Diodes Inc.)	SMBJ15A (EVVO Semi)	PTVS15VP1UP,115 (Nexperia)	SACB15 (Littelfuse)	SMBJ15A-TR (STMicroelectronics)
Manufacturer	Diodes Inc.	Diodes Inc.	EVVO Semi	Nexperia USA Inc.	Littelfuse Inc.	STMicroelectronics
Voltage - Reverse Standoff (Typ)	15V	15V	15V	15V	15V	15V
Voltage - Breakdown (Min)	16.7V	16.7V	16.7V	16.7V	16.7V	16.7V
Voltage - Clamping (Max) @ Ipp	24.4V	24.4V	24.4V	24.4V	23.6V	24.4V
Current - Peak Pulse (10/1000µs)	24A	24A	24.6A	24.6A	20A	25.1A
Power - Peak Pulse	600W	600W	600W	600W	500W	600W
Operating Temperature	-55 to 150°C	-55 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AC, SMA	SOD-128	DO-214AA, SMB	DO-214AA, SMB
Product Status	Discontinued	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (SMB Package):

SMBJ15A-13-F (Diodes Incorporated) is the primary direct substitute. It maintains identical electrical specifications, SMB package footprint, and pinout. The part is active in production with ROHS3 compliance, addressing the discontinued status of the original SMBJ15A-13.

SMBJ15A-TR (STMicroelectronics) provides equivalent electrical performance with slightly higher peak pulse current (25.1A vs. 24A). The SMB package ensures direct PCB compatibility without layout modifications. ROHS3 compliance and active product status support long-term supply chain reliability.

SACB15 (Littelfuse Inc.) operates within acceptable electrical parameters with 23.6V clamping voltage and 20A peak pulse current. While these values are lower than the original specification, they remain within functional tolerance for general-purpose transient suppression. SMB package compatibility is maintained. ROHS3 compliance is confirmed.

Functional Equivalents (Alternative Packages):

SMBJ15A (EVVO Semi) in SMA package (DO-214AC) provides equivalent electrical performance with extended operating temperature range (-65 to 150°C). PCB layout modification is required due to different package footprint. ROHS3 compliance is confirmed.

PTVS15VP1UP,115 (Nexperia USA Inc.) in SOD-128 package offers equivalent electrical specifications with automotive-grade qualification (AEC-Q101). Significant PCB redesign is necessary due to package change. This option is suitable for applications requiring automotive-grade components.

Compliance Considerations:

All active substitute parts meet ROHS3 compliance requirements. The original SMBJ15A-13 is RoHS non-compliant. Selection of ROHS3-compliant substitutes ensures regulatory alignment for new designs and manufacturing transitions.

Frequently Asked Questions (FAQ)

Q: Can SMBJ15A-13-F be used as a direct replacement for SMBJ15A-13?

A: Yes. SMBJ15A-13-F is a direct substitute with identical electrical specifications, SMB package, and pinout. No PCB modifications are required. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant).

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

A: The suffix "-F" indicates Tape & Reel packaging format. Both parts share identical electrical characteristics and SMB package specifications. SMBJ15A-13-F is the active production variant with improved compliance status.

Q: Can SMBJ15A (EVVO Semi, SMA package) replace SMBJ15A-13?

A: Electrically, yes. The SMBJ15A from EVVO Semi provides equivalent voltage and current ratings. However, the SMA package (DO-214AC) has a different footprint than the SMB package (DO-214AA). PCB layout modification is required. Verify pad spacing and trace routing compatibility before implementation.

Q: Is SACB15 suitable for all applications using SMBJ15A-13?

A: SACB15 operates within acceptable electrical parameters for general-purpose transient suppression. The 23.6V clamping voltage and 20A peak pulse current are lower than the original 24.4V and 24A specifications. Verify that your application tolerates these reduced ratings before substitution.

Q: What is the advantage of PTVS15VP1UP,115 over other substitutes?

A: PTVS15VP1UP,115 carries automotive-grade qualification (AEC-Q101) and is manufactured by Nexperia. This option is required for automotive applications or designs requiring automotive-grade component certification. The SOD-128 package requires significant PCB redesign.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are ROHS3 compliant. The original SMBJ15A-13 is RoHS non-compliant. If RoHS compliance is a design requirement, select from the active substitute options.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: Parts with identical packages (SMB) and electrical specifications within tolerance can be used interchangeably. SMBJ15A-13-F, SACB15, and SMBJ15A-TR all use SMB packages and are electrically compatible. Parts with different packages (SMA, SOD-128) require separate PCB designs.

Q: What is the operating temperature range difference between substitutes?

A: Most substitutes operate from -55°C to 150°C, matching the original SMBJ15A-13. SMBJ15A (EVVO Semi) extends the lower limit to -65°C, providing wider temperature coverage. PTVS15VP1UP,115 specifies -55°C to 150°C (TA) rather than (TJ), indicating ambient temperature rating rather than junction temperature.

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