SMCJ90CA-13 Equivalent & Substitute Parts

Part Overview

The SMCJ90CA-13 is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AB (SMC) surface mount package. This bidirectional zener diode is designed for general-purpose transient voltage suppression with a reverse standoff voltage of 90V and peak pulse power rating of 1500W. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	90V
Voltage - Breakdown (Min)	100V
Voltage - Clamping (Max) @ Ipp	146V
Current - Peak Pulse (10/1000µs)	10.3A
Power - Peak Pulse	1500W
Type	Zener
Bidirectional Channels	1
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ90CA-13 is determined by the following critical parameters:

Mandatory Matching Parameters:

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

Variable Parameters (Allowable Differences):

Current - Peak Pulse (10/1000µs): 10.3A or higher
Power - Peak Pulse: 1500W or higher
Operating Temperature: -55°C minimum and 150°C maximum or wider range
Manufacturer and product status

Substitute parts are grouped into two categories based on peak pulse current and power ratings:

Category A - Direct Electrical Equivalents (10.3A / 1500W): Parts with identical peak pulse current and power specifications to the original SMCJ90CA-13.

Category B - Enhanced Performance Substitutes (Higher Current/Power): Parts with higher peak pulse current (20.6A or 34.3A) and correspondingly higher power ratings (3000W or 5000W), providing superior transient suppression capability while maintaining all voltage parameters and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Package	Product Status
SMCJ90CA-13	Diodes Incorporated	90V	100V	146V	10.3A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Discontinued
SMCJ90CA	Fairchild Semiconductor	90V	100V	146V	10.3A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMCJ90CA-TP	Micro Commercial Co	90V	100V	146V	10.3A	1500W	-55°C ~ 175°C	DO-214AB, SMC	Active
SMLJ90CA-TP	Micro Commercial Co	90V	100V	146V	20.6A	3000W	-55°C ~ 175°C	DO-214AB, SMC	Active
SMLJ90CA	Bourns Inc.	90V	100V	146V	20.6A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ90CA	Alpha & Omega Semiconductor Inc.	90V	100V	146V	20.6A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
5.0SMLJ90CA-TP	Micro Commercial Co	90V	100V	146V	34.3A	5000W	-55°C ~ 175°C	DO-214AB, SMC	Active
5.0SMDJ90CA-T7	Littelfuse Inc.	90V	100V	146V	34.3A	5000W	-65°C ~ 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

SMCJ90CA from Fairchild Semiconductor and SMCJ90CA-TP from Micro Commercial Co provide direct electrical and mechanical equivalence to the SMCJ90CA-13. Both maintain the 10.3A peak pulse current and 1500W power rating. SMCJ90CA-TP offers an extended operating temperature range to 175°C and is available in Tape & Reel packaging. Both parts are in active production status.

Enhanced Performance Alternatives:

SMLJ90CA-TP (Micro Commercial Co), SMLJ90CA (Bourns Inc.), and SMDJ90CA (Alpha & Omega Semiconductor Inc.) provide 20.6A peak pulse current and 3000W power rating while maintaining all voltage specifications and package compatibility. These parts offer doubled transient suppression capability. SMLJ90CA-TP extends the operating temperature range to 175°C.

5.0SMLJ90CA-TP (Micro Commercial Co) and 5.0SMDJ90CA-T7 (Littelfuse Inc.) provide the highest performance with 34.3A peak pulse current and 5000W power rating. 5.0SMDJ90CA-T7 extends the lower operating temperature limit to -65°C.

All substitute parts are RoHS3 compliant and in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher peak pulse current than the original SMCJ90CA-13?

A: Yes. Parts with higher peak pulse current (20.6A or 34.3A) and correspondingly higher power ratings maintain all voltage parameters and package compatibility. Higher current ratings provide enhanced transient suppression capability without affecting circuit operation. The circuit will experience the same clamping voltage and protection characteristics.

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

A: Yes. All listed substitute parts use the DO-214AB (SMC) package, which maintains identical footprint and land pattern compatibility. No PCB layout modifications are required for substitution.

Q: What is the difference between SMCJ90CA and SMCJ90CA-TP?

A: Both parts are electrically identical with 10.3A peak pulse current and 1500W power rating. SMCJ90CA-TP is supplied in Tape & Reel packaging and offers an extended operating temperature range to 175°C compared to 150°C for standard SMCJ90CA. Selection depends on packaging requirements and thermal operating conditions.

Q: Why would I choose a higher-power substitute like 5.0SMLJ90CA-TP over a direct equivalent?

A: Higher-power substitutes provide superior transient suppression margin for circuits experiencing severe transient events or multiple successive transients. The 5000W rating offers approximately 3.3 times the energy absorption capacity compared to the original 1500W part, while maintaining identical voltage protection characteristics.

Q: Are there any compliance or certification differences between manufacturers?

A: All listed substitute parts are RoHS3 compliant and REACH unaffected. Specific compliance certifications vary by manufacturer and should be verified against application requirements. Littelfuse 5.0SMDJ90CA-T7 extends the lower operating temperature to -65°C, providing wider thermal coverage than other alternatives.

Q: Can I mix different manufacturers' parts in the same design?

A: Yes. All substitute parts maintain identical voltage specifications, clamping characteristics, and package compatibility. Different manufacturers can be used interchangeably based on availability and supply chain considerations. Ensure consistent part selection within a production batch for optimal consistency.

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