SMBJ7.5CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ7.5CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 7.5V reverse standoff voltage and provides 12.9V maximum clamping voltage at peak pulse current of 46.5A. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Substiute Parts

SMBJ7.5CA-13

Diodes IncorporatedIn Stock: 981SMBJ7.5CA-13 Datasheet

Current PartRFQ

SMBJ7.5CA-13-F

Diodes IncorporatedIn Stock: 4196SMBJ7.5CA-13-F Datasheet

DirectRFQ

SMBJ7.5CA

MDDIn Stock: 45848SMBJ7.5CA Datasheet

DirectRFQ

SMBJ7.5CA

MDDIn Stock: 45848SMBJ7.5CA Datasheet

DirectRFQ

SMBJ7.5CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 55337SMBJ7.5CA-E3/52 Datasheet

DirectRFQ

SMBJ7.5CA-TP

Micro Commercial CoIn Stock: 3082SMBJ7.5CA-TP Datasheet

DirectRFQ

SMBJ7V5CA

Taiwan Semiconductor CorporationIn Stock: 16116SMBJ7V5CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ7.5CA-13 is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 7.5V
• Voltage - Clamping (Max) @ Ipp: 12.9V
• Current - Peak Pulse (10/1000µs): 46.5A (±0.1A tolerance acceptable)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

All identified substitute parts maintain these core electrical specifications within acceptable engineering tolerances. Packaging format (Tape & Reel vs. bulk) and RoHS compliance status do not affect electrical interchangeability but may influence procurement and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SMBJ7.5CA-13-F (Diodes Incorporated)

This part is the direct equivalent from the original manufacturer, maintaining identical electrical specifications and operating temperature range. It is currently in active production status with ROHS3 compliance certification. The Tape & Reel packaging format supports automated assembly processes.

Secondary Recommendations:

SMBJ7.5CA-E3/52 (Vishay General Semiconductor) and SMBJ7V5CA (Taiwan Semiconductor Corporation) provide equivalent electrical performance with active product status and ROHS3 compliance. Both maintain the -55°C to 150°C operating temperature range matching the original specification.

SMBJ7.5CA (MDD) offers active availability with ROHS3 compliance. The operating temperature range extends to -50°C minimum, which is acceptable for applications not requiring the full -55°C lower limit. Peak pulse current specification is 46.6A, within acceptable tolerance of the 46.5A requirement.

SMBJ7.5CA-TP (Micro Commercial Co) provides the widest operating temperature range (-55°C to 175°C), beneficial for high-temperature applications. All electrical parameters match the original specification.

All substitute parts are electrically interchangeable in the DO-214AA (SMB) package footprint. Selection should prioritize active product status and ROHS3 compliance for new designs and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.5CA-13 be directly replaced with SMBJ7.5CA-13-F?

A: Yes. Both parts are manufactured by Diodes Incorporated with identical electrical specifications: 7.5V reverse standoff, 12.9V clamping voltage, and 46.5A peak pulse current. The primary difference is packaging format (bulk vs. Tape & Reel) and RoHS compliance status. SMBJ7.5CA-13-F is the recommended direct replacement.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-214AA (SMB) package, which maintains identical land pattern and mounting requirements. No PCB redesign is necessary for substitution.

Q: What is the significance of the 46.6A specification in SMBJ7.5CA (MDD)?

A: The 46.6A peak pulse current specification is within acceptable engineering tolerance of the 46.5A requirement. This 0.1A variance does not affect functional interchangeability for general-purpose transient voltage suppression applications.

Q: Does operating temperature range affect substitution suitability?

A: Operating temperature range affects suitability only if the application requires operation at the extreme limits. SMBJ7.5CA-TP extends to 175°C, suitable for high-temperature environments. SMBJ7.5CA (MDD) has a -50°C minimum, acceptable for applications not requiring full -55°C operation. For standard industrial applications (-40°C to 85°C ambient), all substitutes are suitable.

Q: Why is RoHS3 compliance important for new designs?

A: ROHS3 compliance ensures the part meets current regulatory requirements for hazardous substance restrictions. For new product designs and long-term supply chain planning, ROHS3-compliant alternatives are preferred over non-compliant legacy parts.

Q: Can packaging format (Tape & Reel vs. bulk) affect electrical performance?

A: No. Packaging format affects only procurement, handling, and assembly processes. Electrical specifications and performance are identical regardless of packaging format.