3.0SMCJ22A-13 Equivalent & Substitute Parts

Part Overview

The 3.0SMCJ22A-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 22V reverse standoff voltage, 35.5V maximum clamping voltage, and 3000W peak pulse power rating in a DO-214AB (SMC) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain the same electrical and mechanical specifications for seamless circuit board replacement.

Substiute Parts

3.0SMCJ22A-13

Diodes IncorporatedIn Stock: 43403.0SMCJ22A-13 Datasheet

Current PartRFQ

SM30T26AY

STMicroelectronicsIn Stock: 3130SM30T26AY Datasheet

DirectRFQ

SMDJ22A

Alpha & Omega Semiconductor Inc.In Stock: 28173SMDJ22A Datasheet

DirectRFQ

TPSMD22A

Littelfuse Inc.In Stock: 3632TPSMD22A Datasheet

DirectRFQ

5.0SMDJ22A

Taiwan Semiconductor CorporationIn Stock: 92885.0SMDJ22A Datasheet

MFR RecommendedRFQ

SMCJ22A

Fairchild SemiconductorIn Stock: 21173SMCJ22A Datasheet

MFR RecommendedRFQ

SMCJ22A

Fairchild SemiconductorIn Stock: 21173SMCJ22A Datasheet

MFR RecommendedRFQ

SMCJ22A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 1273SMCJ22A-E3/57T Datasheet

MFR RecommendedRFQ

SMLJ22A

Bourns Inc.In Stock: 24607SMLJ22A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3.0SMCJ22A-13 are qualified based on the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 22V, breakdown voltage minimum of 24.4V, and clamping voltage maximum of 35.5V
• Current Handling: Peak pulse current of 84.5A (±0.1A tolerance acceptable)
• Power Dissipation: 3000W peak pulse power rating
• Package Compatibility: DO-214AB (SMC) surface-mount package
• Electrical Type: Unidirectional zener TVS diode with single channel
• Temperature Range: Operating range of -55°C to 175°C or equivalent

Parts meeting all these parameters are direct functional equivalents. Parts with higher power ratings (5000W) or different peak pulse currents are listed as alternatives where voltage and package specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical and Thermal Specifications)

SM30T26AY (STMicroelectronics) is the primary direct substitute, matching all critical parameters including 84.5A peak pulse current, 3000W power rating, and -55°C to 175°C operating range. This part carries AEC-Q101 automotive qualification and is actively produced.

SMDJ22A (Alpha & Omega Semiconductor Inc.) provides equivalent voltage and power specifications with 84.6A peak pulse current. Operating temperature range extends to -55°C to 150°C, which is acceptable for most applications within the original -55°C to 175°C envelope.

TPSMD22A (Littelfuse Inc.) matches electrical specifications with 84.5A peak pulse current and 3000W power rating. This part includes AEC-Q101 automotive qualification and extends the lower temperature limit to -65°C. Operating temperature maximum is -55°C to 150°C.

SMLJ22A (Bourns Inc.) delivers equivalent performance with 84.4A peak pulse current and 3000W power rating. Operating temperature range is -55°C to 150°C.

Higher Power Alternative

5.0SMDJ22A (Taiwan Semiconductor Corporation) provides enhanced surge protection with 141A peak pulse current and 5000W power rating while maintaining identical voltage specifications and -55°C to 175°C operating range. This part is suitable for applications requiring increased transient energy absorption.

Lower Power Alternatives

SMCJ22A (Fairchild Semiconductor) and SMCJ22A-E3/57T (Vishay General Semiconductor - Diodes Division) both deliver 42.3A peak pulse current and 1500W power rating. These parts are suitable only for applications with reduced transient energy requirements and are not recommended as direct replacements for the original 3000W specification.

Frequently Asked Questions (FAQ)

Q: Can SM30T26AY directly replace 3.0SMCJ22A-13 on existing circuit boards?

A: Yes. SM30T26AY matches all critical electrical parameters (22V standoff, 35.5V clamping, 84.5A peak pulse, 3000W power) and uses the identical DO-214AB (SMC) package. No circuit modifications are required.

Q: What is the difference between the 3000W and 5000W variants?

A: The 5.0SMDJ22A provides higher peak pulse current (141A) and power dissipation (5000W) compared to the original 3000W specification. This allows greater transient energy absorption. Voltage ratings remain identical. Selection depends on circuit transient severity requirements.

Q: Are the lower power SMCJ22A variants suitable replacements?

A: SMCJ22A and SMCJ22A-E3/57T deliver only 1500W power rating and 42.3A peak pulse current, representing 50% of the original specification. These parts are not recommended as direct replacements unless circuit analysis confirms reduced transient energy requirements.

Q: Does operating temperature range affect substitution compatibility?

A: The original part specifies -55°C to 175°C. Alternatives with -55°C to 150°C ranges are acceptable for most applications. TPSMD22A extends the lower limit to -65°C. Verify application temperature requirements before selection.

Q: Are automotive-qualified parts required?

A: SM30T26AY and TPSMD22A carry AEC-Q101 automotive qualification. Selection depends on application requirements. Non-automotive qualified alternatives remain suitable for general-purpose industrial and consumer applications.

Q: What packaging options are available?

A: All substitute parts use DO-214AB (SMC) surface-mount package. Packaging formats vary (Tape & Reel, Bulk, Cut Tape) but do not affect electrical compatibility or board-level performance.