SMCJ90CA-TP Equivalent & Substitute Parts

Part Overview

The SMCJ90CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 90V reverse standoff voltage and provides 146V clamping at 10.3A peak pulse current, delivering 1500W peak pulse power dissipation in a DO-214AB (SMC) package. The part is active in production and ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when electrical parameters—specifically reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current—remain within acceptable tolerances for the application, and when mechanical compatibility (package type and mounting method) is maintained.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ90CA-TP
Manufacturer	Micro Commercial Co
Category	Transient Voltage Suppressors (TVS)
Type	Zener
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
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 175°C (TJ)
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SMCJ90CA-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents maintain identical electrical specifications: 90V reverse standoff voltage, 100V minimum breakdown voltage, 146V maximum clamping voltage, and 10.3A peak pulse current. These parts are functionally interchangeable in applications where the 1500W power dissipation rating is sufficient.

Similar Alternatives share the same voltage ratings (90V standoff, 100V breakdown, 146V clamping) and DO-214AB/SMC package but differ in peak pulse current and power dissipation capabilities. These parts are suitable for applications requiring higher transient energy absorption or where the original part is unavailable.

The critical parameters determining substitutability are:

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

Parameter Comparison

Parameter	SMCJ90CA-TP (Main)	SMCJ90CA (Fairchild)	SMCJ90CA-13-F (Diodes Inc.)	5.0SMDJ90CA-T7 (Littelfuse)	SMDJ90CA (AOS)	SMLJ90CA (Bourns)
Manufacturer	Micro Commercial Co	Fairchild Semiconductor	Diodes Incorporated	Littelfuse Inc.	Alpha & Omega Semiconductor	Bourns Inc.
Voltage - Reverse Standoff (Typ)	90V	90V	90V	90V	90V	90V
Voltage - Breakdown (Min)	100V	100V	100V	100V	100V	100V
Voltage - Clamping (Max) @ Ipp	146V	146V	146V	146V	146V	146V
Current - Peak Pulse (10/1000µs)	10.3A	10.3A	10.3A	34.3A	20.6A	20.6A
Power - Peak Pulse	1500W	1500W	1500W	5000W	3000W	3000W
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-55°C ~ 175°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Tape & Reel (TR)	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

SMCJ90CA (Fairchild Semiconductor) serves as a direct electrical equivalent with identical voltage and current ratings. This part is suitable for direct substitution where bulk packaging is acceptable. All parts maintain active product status and ROHS3 compliance where specified.

SMCJ90CA-13-F (Diodes Incorporated) provides direct electrical equivalence with tape-and-reel packaging, matching the original part's supply format. This part is recommended when maintaining original packaging specifications is required.

5.0SMDJ90CA-T7 (Littelfuse Inc.) offers higher peak pulse current (34.3A) and power dissipation (5000W), suitable for applications requiring enhanced transient energy absorption while maintaining identical voltage protection levels. Extended operating temperature range (-65°C to 150°C) provides additional thermal margin in cold environments.

SMDJ90CA (Alpha & Omega Semiconductor Inc.) and SMLJ90CA (Bourns Inc.) both provide intermediate current and power ratings (20.6A, 3000W), offering a balance between the original specification and maximum protection alternatives. Both maintain ROHS3 compliance and tape-and-reel packaging.

Selection should prioritize parts with active product status and ROHS3 compliance. Operating temperature range differences should be evaluated against application requirements, particularly for the SMCJ90CA-TP original part, which supports operation to 175°C.

Frequently Asked Questions (FAQ)

Q: Can SMCJ90CA (Fairchild bulk packaging) be used as a direct replacement for SMCJ90CA-TP (tape-and-reel)?

A: Electrically, yes. Both parts have identical voltage ratings (90V standoff, 146V clamping) and current specifications (10.3A). The difference is packaging format: bulk versus tape-and-reel. If your assembly process requires tape-and-reel format, the bulk version requires repackaging or manual handling, which may increase procurement and assembly costs.

Q: What is the difference between the SMCJ90CA-TP and the 5.0SMDJ90CA-T7?

A: Both protect at the same voltage levels (90V standoff, 146V clamping). The 5.0SMDJ90CA-T7 handles significantly higher transient currents (34.3A versus 10.3A) and dissipates more power (5000W versus 1500W). Use the higher-rated part only if your application experiences larger transient events; oversizing unnecessarily increases component cost and board space.

Q: Are all substitute parts ROHS3 compliant?

A: ROHS3 compliance is confirmed for SMCJ90CA-TP, SMCJ90CA-13-F, 5.0SMDJ90CA-T7, SMDJ90CA, and SMLJ90CA. The SMCJ90CA (Fairchild) does not specify RoHS status in available data. Verify compliance documentation with your supplier if regulatory certification is required.

Q: Can I use SMLJ90CA or SMDJ90CA in place of SMCJ90CA-TP?

A: Yes, for voltage protection purposes. Both parts maintain the same 90V standoff and 146V clamping voltages. However, they provide higher peak pulse current (20.6A) and power dissipation (3000W) compared to the original 10.3A and 1500W. This represents over-specification for the original application but ensures greater margin against transient stress.

Q: Does operating temperature range affect substitutability?

A: Operating temperature range affects long-term reliability in extreme environments but does not change the voltage protection function. The SMCJ90CA-TP operates to 175°C, while most substitutes operate to 150°C. If your application requires operation above 150°C, the original part or equivalent with extended temperature rating is necessary. For standard industrial applications (-55°C to 125°C), all listed parts are suitable.

Q: What is the significance of the DO-214AB (SMC) package specification?

A: DO-214AB and SMC are equivalent designations for the same surface-mount package. All listed parts use this package, ensuring mechanical and electrical compatibility on PCBs designed for the SMCJ90CA-TP. Package compatibility is confirmed across all substitutes.

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