SMAJ10A-13 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMAJ10A-13 is a unidirectional Zener TVS diode manufactured by Diodes Incorporated, designed for transient voltage suppression in general-purpose applications. This part operates with a 10V reverse standoff voltage and provides 17V maximum clamping voltage at peak pulse current of 24.6A. The SMAJ10A-13 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMAJ10A-13
Manufacturer	Diodes Incorporated
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	10V
Voltage - Breakdown (Min)	11.1V
Voltage - Clamping (Max) @ Ipp	17V
Current - Peak Pulse (10/1000µs)	24.6A
Power - Peak Pulse	400W
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the SMAJ10A-13 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 10V (exact match required)
Voltage - Breakdown (Min): 11.1V or 11V (acceptable tolerance)
Voltage - Clamping (Max) @ Ipp: 17V to 21.7V (within acceptable clamping range)
Current - Peak Pulse: 24.6A minimum
Package / Case: DO-214AC, SMA (mechanical compatibility)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C minimum to 150°C minimum

Substitute Categories:

Category A - Direct Electrical & Mechanical Equivalents (SMA Package, 17V Clamping): Parts with identical clamping voltage (17V), matching peak pulse current (24.6A), and SMA package form factor.

Category B - Enhanced Performance Substitutes (SMA Package, Higher Clamping Voltage): Parts with higher clamping voltage (19.6V to 21.7V) and increased peak pulse current capability, maintaining SMA package compatibility.

Category C - Alternative Package Substitutes (SOD-123W Package): Parts meeting electrical specifications but in alternative surface-mount package form factor.

Category D - Compliance-Enhanced Variants: Parts with improved RoHS and automotive qualification status while maintaining core electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Operating Temp	Product Status	RoHS Status
SMAJ10A-13	Diodes Incorporated	10V	11.1V	17V	24.6A	400W	DO-214AC, SMA	-55°C ~ 150°C	Obsolete	RoHS non-compliant
SMAJ10A-13-F	Diodes Incorporated	10V	11.1V	17V	24.6A	400W	DO-214AC, SMA	-55°C ~ 150°C	Active	ROHS3 Compliant
SMAJ10A	MDD	10V	11V	17V	24.6A	400W	DO-214AC, SMA	-50°C ~ 150°C	Active	ROHS3 Compliant
TV04A100J-G	Comchip Technology	10V	11.1V	17V	24.63A	400W	DO-214AC, SMA	-55°C ~ 150°C	Active	ROHS3 Compliant
PTVS10VS1UR,115	Nexperia USA Inc.	10V	11.1V	17V	24.6A	400W	SOD-123W	-55°C ~ 150°C	Active	ROHS3 Compliant
SM4T12AY	STMicroelectronics	10V	11.1V	21.7V	106A (8/20µs)	400W	DO-214AC, SMA	-55°C ~ 150°C	Active	ROHS3 Compliant
SMA6J10A-E3/5A	Vishay General Semiconductor - Diodes Division	10V	11.1V	19.6V	184A (8/20µs)	4000W	DO-214AC, SMA	-55°C ~ 150°C	Active	ROHS3 Compliant
SMA6J10A-E3/61	Vishay General Semiconductor - Diodes Division	10V	11.1V	19.6V	184A (8/20µs)	4000W	DO-214AC, SMA	-55°C ~ 150°C	Active	ROHS3 Compliant
SMA6J10A-TR	STMicroelectronics	10V	11.1V	19.6V	184A (8/20µs)	600W	DO-214AC, SMA	-55°C ~ 175°C	Active	ROHS3 Compliant
SMA6L10A	Littelfuse	10V	11.1V	17V	35.3A	600W	DO-221AC, SMA Flat Leads	-65°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement (SMA Package, 17V Clamping):

SMAJ10A-13-F (Diodes Incorporated) is the direct active equivalent. It maintains identical electrical specifications (10V standoff, 17V clamping, 24.6A peak pulse) and SMA package form factor. The primary advantage is RoHS3 compliance and active product status, addressing the obsolescence of the original SMAJ10A-13.

TV04A100J-G (Comchip Technology) provides equivalent performance with nearly identical peak pulse current (24.63A) and maintains all critical electrical parameters. This part is suitable for applications requiring active product status and RoHS compliance.

SMAJ10A (MDD) offers equivalent electrical performance with active status and RoHS compliance. Operating temperature range is -50°C to 150°C, which is acceptable for most applications requiring -55°C minimum operation.

SMA6L10A (Littelfuse) maintains 17V clamping voltage with enhanced peak pulse current (35.3A) and power dissipation (600W). The package is DO-221AC with SMA flat leads, requiring PCB layout verification for mechanical compatibility. Operating temperature extends to -65°C.

Secondary Recommendation - Enhanced Performance Substitutes (SMA Package, Higher Clamping Voltage):

SMA6J10A-E3/5A and SMA6J10A-E3/61 (Vishay) provide higher clamping voltage (19.6V) with significantly increased peak pulse current (184A) and power dissipation (4000W). These parts are suitable for applications requiring enhanced transient suppression capability while maintaining SMA package compatibility.

SMA6J10A-TR (STMicroelectronics) offers the same enhanced electrical performance as the Vishay variants with extended operating temperature range (-55°C to 175°C). Power dissipation is rated at 600W.

SM4T12AY (STMicroelectronics) provides higher clamping voltage (21.7V) with significantly increased peak pulse current (106A at 8/20µs pulse). This part is suitable for applications with higher transient energy requirements.

Alternative Package Option:

PTVS10VS1UR,115 (Nexperia USA Inc.) maintains identical electrical specifications to the original part but uses SOD-123W package instead of SMA. This part is suitable only if PCB layout accommodates the alternative package form factor.

Frequently Asked Questions (FAQ)

Q: Can SMAJ10A-13-F be used as a direct replacement for SMAJ10A-13?

A: Yes. SMAJ10A-13-F is the active equivalent with identical electrical specifications (10V standoff, 17V clamping, 24.6A peak pulse) and SMA package. The primary difference is RoHS3 compliance and active product status. No circuit modifications are required.

Q: What is the difference between 17V clamping and 19.6V clamping substitutes?

A: The clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. Higher clamping voltage (19.6V) provides less aggressive suppression but may be acceptable in applications with higher voltage tolerance. Lower clamping voltage (17V) provides more aggressive protection. Selection depends on the protected circuit's voltage rating and transient immunity requirements.

Q: Are the Vishay SMA6J10A variants compatible with the original SMAJ10A-13 footprint?

A: Yes. All Vishay SMA6J10A variants use DO-214AC (SMA) package, which is mechanically compatible with the original SMAJ10A-13 footprint. However, these parts provide enhanced performance with higher clamping voltage (19.6V) and significantly increased peak pulse current (184A), making them suitable for applications requiring higher transient energy suppression.

Q: Can SMA6L10A be used if the original part is no longer available?

A: Yes. SMA6L10A maintains the same 10V standoff and 17V clamping voltage as the original SMAJ10A-13. The package is DO-221AC with SMA flat leads, which requires verification of PCB layout compatibility. Peak pulse current is enhanced to 35.3A, and power dissipation is 600W. Operating temperature range extends to -65°C.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: RoHS3 compliance indicates the part meets current environmental and hazardous substance restrictions. The original SMAJ10A-13 is RoHS non-compliant. All active substitutes listed are ROHS3 compliant, making them suitable for applications subject to RoHS regulations and modern supply chain requirements.

Q: Is the SOD-123W package (PTVS10VS1UR,115) a viable substitute?

A: The PTVS10VS1UR,115 maintains identical electrical specifications but uses SOD-123W package instead of SMA. This substitute is viable only if the PCB layout can accommodate the alternative package form factor. Mechanical compatibility must be verified before selection.

Q: What is the difference between peak pulse current specifications (10/1000µs vs. 8/20µs)?

A: Peak pulse current is measured under different pulse waveform conditions. The original SMAJ10A-13 specifies 24.6A at 10/1000µs pulse. Some substitutes specify current at 8/20µs pulse, which represents a different transient waveform. Both specifications are valid for their respective pulse conditions. Selection should match the actual transient waveform in the application.

Q: Can MDD SMAJ10A be used as a substitute?

A: Yes. MDD SMAJ10A provides equivalent electrical performance with 10V standoff, 17V clamping, and 24.6A peak pulse. The part is active and RoHS3 compliant. Operating temperature range is -50°C to 150°C, which is acceptable for most applications. Verify that the -50°C minimum temperature meets application requirements if operation below -50°C is necessary.

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