SMAJ90CA-13 Equivalent & Substitute Parts

Part Overview

The SMAJ90CA-13 is a Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 90V reverse standoff voltage with 146V maximum clamping voltage and 2.7A peak pulse current capability in a DO-214AC (SMA) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SMAJ90CA-13

Diodes IncorporatedIn Stock: 985SMAJ90CA-13 Datasheet

Current PartRFQ

SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

MFR RecommendedRFQ

SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

MFR RecommendedRFQ

SMAJ90CA

MDDIn Stock: 37281SMAJ90CA Datasheet

MFR RecommendedRFQ

SMAJ90CA-TP

Micro Commercial CoIn Stock: 5746SMAJ90CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ90CA-13 is determined by strict electrical and mechanical parameter matching across the following criteria:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Breakdown (Min): 100V
• Voltage - Clamping (Max) @ Ipp: 146V
• Current - Peak Pulse (10/1000µs): 2.7A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Type: Zener
• Bidirectional Channels: 1
• Mounting Type: Surface Mount
• Applications: General Purpose

All identified substitute parts maintain identical electrical specifications for voltage suppression performance and current handling capacity. Package compatibility is preserved across all alternatives, ensuring direct mechanical and electrical interchangeability in existing PCB designs. Substitutes differ in manufacturer identity, product status, compliance certifications, and operating temperature ranges, which are secondary considerations for functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

SMAJ90CA (MDD): This substitute offers active product status with ROHS3 compliance certification, providing regulatory alignment for new designs and production environments requiring RoHS adherence. Inventory availability of 37,200 units supports sustained supply chain requirements. Operating temperature range of -50°C to 150°C covers standard industrial applications, with the lower bound representing a 5°C reduction compared to the original part.

SMAJ90CA-TP (Micro Commercial Co): This variant provides the widest operating temperature range (-55°C to 175°C) and active product status with ROHS3 compliance. Tape & Reel packaging format is suitable for automated assembly processes. Inventory of 5,638 units supports moderate production volumes. This option is optimal for applications requiring extended temperature performance or automated placement workflows.

Both substitutes maintain complete electrical equivalence to the SMAJ90CA-13 across all critical suppression parameters. Selection between alternatives should prioritize active product status, compliance requirements, packaging format compatibility with assembly equipment, and inventory availability for production timelines.

Frequently Asked Questions (FAQ)

Q: Are these substitute parts electrically identical to the SMAJ90CA-13?

A: Yes. All substitute parts maintain identical voltage suppression specifications: 90V reverse standoff, 100V minimum breakdown, 146V maximum clamping voltage, and 2.7A peak pulse current. Electrical performance in circuit protection applications is equivalent.

Q: Can I use these substitutes as direct replacements on existing PCBs?

A: Yes. All substitutes use the identical DO-214AC (SMA) package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes without design modification.

Q: What is the difference between SMAJ90CA and SMAJ90CA-TP?

A: Both parts are electrically equivalent. The primary difference is packaging format: SMAJ90CA is supplied in standard packaging, while SMAJ90CA-TP is supplied in Tape & Reel format optimized for automated assembly equipment. Operating temperature range also differs: SMAJ90CA-TP extends to 175°C maximum.

Q: Why is the original SMAJ90CA-13 discontinued?

A: The part is discontinued at DiGi Electronics. The substitute parts SMAJ90CA (MDD) and SMAJ90CA-TP (Micro Commercial Co) provide equivalent functionality with active product status and improved compliance certifications.

Q: Do the substitutes meet RoHS requirements?

A: Yes. Both SMAJ90CA (MDD) and SMAJ90CA-TP (Micro Commercial Co) are ROHS3 compliant, whereas the original SMAJ90CA-13 is RoHS non-compliant. This represents an improvement for designs requiring regulatory compliance.

Q: What is the operating temperature difference between substitutes?

A: SMAJ90CA (MDD) operates from -50°C to 150°C, while SMAJ90CA-TP (Micro Commercial Co) operates from -55°C to 175°C. For applications requiring the full -55°C lower bound or extended high-temperature performance to 175°C, SMAJ90CA-TP is the appropriate selection.

Q: Which substitute should I choose for new production?

A: For standard applications, SMAJ90CA (MDD) offers high inventory availability and active status. For automated assembly or extended temperature requirements, SMAJ90CA-TP (Micro Commercial Co) provides Tape & Reel packaging and wider temperature range.