SMAJ90A-13 Equivalent & Substitute Parts

Part Overview

The SMAJ90A-13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AC (SMA) surface mount package. This component is designed for general-purpose transient voltage protection applications with a 90V reverse standoff voltage and 146V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SMAJ90A-13

Diodes IncorporatedIn Stock: 816SMAJ90A-13 Datasheet

Current PartRFQ

SMAJ90A

HY Electronic (Cayman) LimitedIn Stock: 10366SMAJ90A Datasheet

MFR RecommendedRFQ

SMAJ90A

HY Electronic (Cayman) LimitedIn Stock: 10366SMAJ90A Datasheet

MFR RecommendedRFQ

SMAJ90A-TP

Micro Commercial CoIn Stock: 3843SMAJ90A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ90A-13 are qualified based on the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Breakdown (Min): 100V
• Voltage - Clamping (Max) @ Ipp: 146V
• Current - Peak Pulse (10/1000µs): 2.7A minimum
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Type: Unidirectional Zener

All substitute parts maintain identical voltage specifications and package compatibility, ensuring direct functional equivalence in circuit applications. Peak pulse current specifications of substitute parts meet or exceed the original part requirement.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full electrical and mechanical compatibility with the SMAJ90A-13. Selection between available substitutes should be based on the following factors:

SMAJ90A (HY Electronic): This part is actively manufactured and available in high inventory (10,300 pcs). It meets ROHS3 compliance requirements and provides a peak pulse current of 2.8A, exceeding the original specification. This option is suitable for applications requiring RoHS compliance and high availability.

SMAJ90A-TP (Micro Commercial Co): This part is actively manufactured with 3,765 pcs in stock. It maintains the original 2.7A peak pulse current specification and offers an extended operating temperature range of -55°C to 175°C (TA), compared to the original -55°C to 150°C (TJ). ROHS3 compliance and REACH Unaffected status are provided. This option is suitable for applications requiring extended temperature performance or REACH compliance verification.

Both substitutes are electrically and mechanically equivalent to the discontinued SMAJ90A-13 and support direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can SMAJ90A and SMAJ90A-TP be used interchangeably with SMAJ90A-13?

A: Yes. Both substitute parts maintain identical voltage specifications (90V reverse standoff, 100V breakdown minimum, 146V clamping maximum) and package compatibility (DO-214AC, SMA surface mount). Peak pulse current specifications meet or exceed the original 2.7A requirement.

Q: What is the difference between SMAJ90A (HY Electronic) and SMAJ90A-TP (Micro Commercial Co)?

A: The primary differences are manufacturer, peak pulse current rating (2.8A vs. 2.7A), and operating temperature range. SMAJ90A-TP offers an extended temperature range of -55°C to 175°C compared to -55°C to 150°C for SMAJ90A. Both are ROHS3 compliant and actively manufactured.

Q: Are there any compliance differences between the original and substitute parts?

A: Yes. The original SMAJ90A-13 is RoHS non-compliant. Both substitute parts (SMAJ90A and SMAJ90A-TP) are ROHS3 compliant. SMAJ90A-TP additionally carries REACH Unaffected status. Applications requiring RoHS or REACH compliance should use the substitute parts.

Q: Does the package remain the same across all three parts?

A: Yes. All three parts use the DO-214AC (SMA) surface mount package. PCB footprints and assembly processes remain unchanged.

Q: Which substitute should I select for a new design?

A: For new designs, either substitute is acceptable based on electrical requirements. SMAJ90A-TP is recommended if extended temperature performance (-55°C to 175°C) is required. SMAJ90A is recommended if maximum peak pulse current (2.8A) is beneficial. Both are actively manufactured with adequate inventory.