3.0SMCJ24A-13 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 3.0SMCJ24A-13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 24V reverse standoff voltage with 38.9V maximum clamping voltage and 77.1A peak pulse current capability at 3000W peak pulse power. The part is active in production status and ROHS3 compliant with unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the DO-214AB (SMC) package family.

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)	77.1	A
Power - Peak Pulse	3000	W
Operating Temperature Range	-55 to 175	°C
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 3.0SMCJ24A-13 are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Equivalence Parameters:

Voltage - Reverse Standoff: 24V (±tolerance)
Voltage - Breakdown (Min): 26.7V
Voltage - Clamping (Max) @ Ipp: 38.9V
Current - Peak Pulse (10/1000µs): 77.1A to 77.2A range
Power - Peak Pulse: 3000W minimum

Mechanical Compatibility:

Package / Case: DO-214AB or SMC equivalent
Mounting Type: Surface Mount
Unidirectional Channels: 1

Compliance Requirements:

RoHS3 Compliant
Active product status

Parts meeting all electrical and mechanical criteria are direct substitutes. Parts with higher power ratings (5000W) or different peak pulse current specifications are classified as functional alternatives suitable for applications requiring enhanced performance margins.

Parameter Comparison

Manufacturer	Part Number	Voltage Standoff (V)	Voltage Clamp (V)	Peak Pulse Current (A)	Power Rating (W)	Package	Temp Range (°C)	Status
Diodes Incorporated	3.0SMCJ24A-13	24	38.9	77.1	3000	DO-214AB, SMC	-55 to 175	Active
STMicroelectronics	SM30T28AY	24	38.9	77.1	3000	DO-214AB, SMC	-55 to 175	Active
Alpha & Omega Semiconductor Inc.	SMDJ24A	24	38.9	77.2	3000	DO-214AB, SMC	-55 to 150	Active
Littelfuse Inc.	TPSMD24A	24	38.9	77.1	3000	DO-214AB, SMC	-65 to 150	Active
Littelfuse Inc.	3.0SMC24A	24	51	520 (8/20µs)	—	DO-214AB, SMC	-65 to 150	Active
Taiwan Semiconductor Corporation	5.0SMDJ24A	24	38.9	129	5000	DO-214AB, SMC	-55 to 175	Active
Littelfuse Inc.	5.0SMDJ24A-T7	24	38.9	129	5000	DO-214AB, SMC	-65 to 150	Active
EVVO Semi	SMCJ24A	24	38.9	38.6	600	DO-214AC, SMA	-65 to 150	Active
Vishay General Semiconductor	SMCJ24A-E3/9AT	24	38.9	38.6	1500	DO-214AB, SMC	-55 to 150	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (3000W, 77.1A–77.2A):

SM30T28AY (STMicroelectronics) and TPSMD24A (Littelfuse Inc.) provide direct electrical equivalence to the 3.0SMCJ24A-13 with identical clamping voltage, peak pulse current, and power rating. Both are ROHS3 compliant and active in production. SM30T28AY carries AEC-Q101 automotive qualification. TPSMD24A is qualified to AEC-Q101 and carries REACH Affected status. SMDJ24A (Alpha & Omega Semiconductor Inc.) matches electrical specifications with 77.2A peak pulse current and is suitable for applications with maximum operating temperature not exceeding 150°C.

Enhanced Performance Alternatives (5000W, 129A):

5.0SMDJ24A (Taiwan Semiconductor Corporation) and 5.0SMDJ24A-T7 (Littelfuse Inc.) provide higher power dissipation capability at 5000W with 129A peak pulse current while maintaining 24V standoff and 38.9V clamping voltage. These parts are suitable for applications requiring additional thermal margin or higher transient energy absorption. Both are ROHS3 compliant and active in production. 5.0SMDJ24A-T7 is AEC-Q101 qualified for automotive applications.

Lower Power Alternative (1500W, 38.6A):

SMCJ24A-E3/9AT (Vishay General Semiconductor - Diodes Division) operates at reduced power rating of 1500W with 38.6A peak pulse current. This part is suitable only for applications with lower transient energy requirements and is not recommended as a direct substitute for the 3.0SMCJ24A-13 in circuits designed for 3000W protection.

Package Consideration:

SMCJ24A (EVVO Semi) features DO-214AC (SMA) package with reduced power rating of 600W and 38.6A peak pulse current. This part is not mechanically compatible with DO-214AB (SMC) footprints and is not suitable as a substitute.

Frequently Asked Questions (FAQ)

Q: Can SM30T28AY directly replace 3.0SMCJ24A-13 in existing designs?

A: Yes. SM30T28AY matches all critical electrical parameters: 24V standoff voltage, 38.9V clamping voltage, 77.1A peak pulse current, and 3000W power rating. Both use DO-214AB (SMC) package. Verify PCB footprint compatibility before assembly.

Q: What is the difference between 3000W and 5000W TVS diodes in this voltage class?

A: The 5000W variants (5.0SMDJ24A and 5.0SMDJ24A-T7) dissipate higher transient energy with 129A peak pulse current compared to 77.1A in 3000W parts. Selection depends on circuit transient energy levels. Use 5000W parts only if application analysis confirms higher energy absorption is required.

Q: Is SMCJ24A-E3/9AT suitable as a substitute?

A: SMCJ24A-E3/9AT is not recommended as a direct substitute. It operates at 1500W power rating and 38.6A peak pulse current, providing only 50% of the 3.0SMCJ24A-13 protection capability. Use only in applications specifically designed for lower power dissipation.

Q: Why is SMCJ24A (EVVO Semi) listed but not recommended?

A: SMCJ24A uses DO-214AC (SMA) package, which is mechanically incompatible with DO-214AB (SMC) footprints. Additionally, its 600W power rating and 38.6A peak pulse current are insufficient for applications requiring 3000W protection.

Q: Are there temperature range differences between substitutes?

A: Yes. The 3.0SMCJ24A-13 operates from -55°C to 175°C. TPSMD24A and 5.0SMDJ24A-T7 operate to -65°C minimum but only to 150°C maximum. Verify application temperature requirements before selection.

Q: What compliance certifications should I verify?

A: All listed substitutes are ROHS3 compliant and active in production status. For automotive applications, verify AEC-Q101 qualification: SM30T28AY, TPSMD24A, and 5.0SMDJ24A-T7 carry this certification. Standard industrial applications do not require automotive qualification.

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