SMCJ90A-E3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ90A-E3/9AT is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 90V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is active and in production, with 1156 units currently in stock. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-214AB (SMC) package family.

Substiute Parts

SMCJ90A-E3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1254SMCJ90A-E3/9AT Datasheet

Current PartRFQ

SMCJ90A

Fairchild SemiconductorIn Stock: 30254SMCJ90A Datasheet

DirectRFQ

SMCJ90A

Fairchild SemiconductorIn Stock: 30254SMCJ90A Datasheet

DirectRFQ

SMCJ90A

Fairchild SemiconductorIn Stock: 30254SMCJ90A Datasheet

DirectRFQ

SMCJ90A

Fairchild SemiconductorIn Stock: 30254SMCJ90A Datasheet

DirectRFQ

SMCJ90A-13-F

Diodes IncorporatedIn Stock: 15445SMCJ90A-13-F Datasheet

DirectRFQ

5.0SMDJ90A

Taiwan Semiconductor CorporationIn Stock: 34725.0SMDJ90A Datasheet

MFR RecommendedRFQ

5.0SMDJ90A-T7

Littelfuse Inc.In Stock: 17055.0SMDJ90A-T7 Datasheet

MFR RecommendedRFQ

SM15T100A

STMicroelectronicsIn Stock: 2229SM15T100A Datasheet

MFR RecommendedRFQ

SMDJ90A

Alpha & Omega Semiconductor Inc.In Stock: 15156SMDJ90A Datasheet

MFR RecommendedRFQ

SMLJ90A

Bourns Inc.In Stock: 15145SMLJ90A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ90A-E3/9AT is determined by the following critical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Breakdown (Min): 100V
• Voltage - Clamping (Max) @ Ipp: 146V
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Secondary Considerations:

• Current - Peak Pulse (10/1000µs): 10.3A minimum
• Power - Peak Pulse: 1500W minimum
• Operating Temperature Range: -55°C to 150°C minimum
• RoHS3 Compliance and Active product status

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical electrical specifications (90V standoff, 100V breakdown, 146V clamping) and the same DO-214AB SMC package. These include SMCJ90A from Fairchild Semiconductor and SMCJ90A-13-F from Diodes Incorporated.

Enhanced Performance Substitutes: Parts with the same voltage ratings and package but higher current handling or power dissipation capabilities. These include SMDJ90A (3000W, 20.6A), SMLJ90A (3000W, 20.6A), and 5.0SMDJ90A series (5000W, 34.3A).

Alternative Voltage Class: SM15T100A from STMicroelectronics operates in a different voltage class (85.5V standoff, 95V breakdown) and is included for reference only where voltage tolerance permits.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Pin-Compatible, Electrically Identical):

SMCJ90A-13-F from Diodes Incorporated is the primary direct substitute. It matches all electrical parameters of the SMCJ90A-E3/9AT, operates within the same temperature range, and carries ROHS3 compliance. This part is available in Tape & Reel packaging with 15,400 units in stock.

SMCJ90A from Fairchild Semiconductor is a secondary direct equivalent with identical electrical specifications and the same DO-214AB SMC package. Availability is high at 30,200 units in bulk packaging.

Enhanced Performance Substitutes (Same Voltage, Higher Current/Power):

SMDJ90A from Alpha & Omega Semiconductor Inc. and SMLJ90A from Bourns Inc. both provide doubled current handling (20.6A vs. 10.3A) and doubled power dissipation (3000W vs. 1500W) while maintaining identical voltage ratings and temperature range. Both are ROHS3 compliant and available in Tape & Reel packaging.

5.0SMDJ90A from Taiwan Semiconductor Corporation and 5.0SMDJ90A-T7 from Littelfuse Inc. provide the highest performance margin with 34.3A peak pulse current and 5000W power dissipation. Both maintain the 90V/100V/146V voltage specifications and ROHS3 compliance. The Littelfuse variant extends the lower temperature limit to -65°C.

Alternative Voltage Class (Use Only When Voltage Tolerance Permits):

SM15T100A from STMicroelectronics operates at 85.5V reverse standoff (vs. 90V) with a higher clamping voltage of 178V. This part is suitable only in applications where the lower standoff voltage and higher clamping voltage are acceptable.

All recommended substitutes are active products with current manufacturing status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use SMDJ90A or SMLJ90A as a direct replacement for SMCJ90A-E3/9AT?

A: Yes. SMDJ90A and SMLJ90A are pin-compatible substitutes with identical voltage ratings (90V standoff, 100V breakdown, 146V clamping) and the same DO-214AB SMC package. They provide enhanced performance with doubled current and power ratings, making them suitable for applications requiring higher transient energy absorption.

Q: What is the difference between the 1500W and 3000W versions?

A: The primary difference is peak pulse power dissipation and peak pulse current. The SMCJ90A-E3/9AT handles 10.3A at 1500W, while SMDJ90A and SMLJ90A handle 20.6A at 3000W. Both maintain identical voltage clamping characteristics. Selection depends on the expected transient energy in the application.

Q: Is SM15T100A a suitable substitute?

A: SM15T100A operates in a different voltage class with 85.5V reverse standoff and 95V breakdown, compared to the 90V/100V specifications of SMCJ90A-E3/9AT. It is suitable only in applications where the lower standoff voltage and higher clamping voltage (178V) are acceptable. Verify circuit requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: All recommended substitutes carry ROHS3 compliance certification, matching the compliance status of the SMCJ90A-E3/9AT.

Q: What packaging options are available for substitutes?

A: Direct equivalents and enhanced performance substitutes are available in both Tape & Reel (TR) and Bulk packaging. Tape & Reel packaging is standard for automated assembly processes, while Bulk packaging is available for manual assembly or lower-volume applications.

Q: Can I use 5.0SMDJ90A series parts in place of the standard SMCJ90A-E3/9AT?

A: Yes. The 5.0SMDJ90A and 5.0SMDJ90A-T7 are pin-compatible with identical voltage ratings and the same DO-214AB SMC package. They provide the highest performance margin with 34.3A peak pulse current and 5000W power dissipation. These parts are suitable for applications requiring maximum transient protection capability.

Q: What is the difference between 5.0SMDJ90A and 5.0SMDJ90A-T7?

A: Both parts have identical electrical specifications and power ratings. The primary difference is the operating temperature range: 5.0SMDJ90A operates from -55°C to 175°C, while 5.0SMDJ90A-T7 operates from -65°C to 150°C. Select based on your application's temperature requirements.