SMCJ36C-E3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ36C-E3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 36V reverse standoff voltage, 64.3V maximum clamping voltage, and 23.3A peak pulse current capability in a DO-214AB (SMC) package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMCJ36C-E3/9AT
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Product Status	Obsolete
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	36V
Voltage - Breakdown (Min)	40V
Voltage - Clamping (Max) @ Ipp	64.3V
Current - Peak Pulse (10/1000µs)	23.3A
Power - Peak Pulse	1500W
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMCJ36C-E3/9AT is determined by the following critical parameters:

Reverse Standoff Voltage: 36V (primary protection threshold)
Package Type: DO-214AB / SMC (surface-mount compatibility)
Bidirectional Configuration: Single channel
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into two categories based on electrical performance:

Category A - Direct Electrical Equivalents (64.3V Clamping): Parts maintaining identical clamping voltage and peak pulse current specifications, suitable for direct replacement in designs requiring the original electrical characteristics.

Category B - Functional Equivalents (58.1V Clamping, 25.8-25.9A Ipp): Parts with lower clamping voltage and comparable peak pulse current, acceptable where the reduced clamping voltage remains within circuit protection requirements.

Category C - Enhanced Performance (58.1V Clamping, 86.1A Ipp, 5kW Power): Higher current-rated devices suitable for applications requiring increased transient energy dissipation capacity.

Category D - Lower Voltage Rating (33V Standoff): Part with reduced voltage rating, applicable only where circuit protection thresholds permit lower standoff voltage.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Product Status	Package
SMCJ36C-E3/9AT	Vishay General Semiconductor	36V	64.3V	23.3A	1500W	-55°C ~ 150°C	Obsolete	DO-214AB (SMCJ)
SMCJ36CA-E3/9AT	Vishay General Semiconductor	36V	58.1V	25.8A	1500W	-55°C ~ 150°C	Active	DO-214AB (SMCJ)
SMCJ36CE3/TR13	Microchip Technology	36V	64.3V	23.3A	1500W	-65°C ~ 150°C	Active	DO-214AB (SMCJ)
5.0SMDJ36CA	HY Electronic (Cayman) Limited	36V	58.1V	86.1A	5000W	-65°C ~ 150°C	Active	DO-214AB (SMCJ)
5.0SMDJ36CA-T7	Littelfuse Inc.	36V	58.1V	86.1A	5000W	-65°C ~ 150°C	Active	DO-214AB (SMCJ)
SMCJ33CA	MDD	33V	53.3V	28.2A	1500W	-50°C ~ 150°C	Active	DO-214AB, SMC
SMCJ36CA	EVVO Semi	36V	58.1V	25.9A	1500W	-55°C ~ 150°C	Active	DO-214AB, SMC
SMCJ36CA-13-F	Diodes Incorporated	36V	58.1V	25.8A	1500W	-55°C ~ 150°C	Active	DO-214AB, SMC
SMCJ36CA-HR	Littelfuse Inc.	36V	58.1V	25.9A	1500W	-65°C ~ 150°C	Active	DO-214AB (SMCJ)
SMCJ36CA-HRA	Littelfuse Inc.	36V	58.1V	25.9A	1500W	-65°C ~ 150°C	Active	DO-214AB (SMCJ)

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance)

SMCJ36CE3/TR13 (Microchip Technology) provides exact electrical equivalence with 64.3V clamping voltage and 23.3A peak pulse current. This part is active in production with extended operating temperature range (-65°C to 150°C) and ROHS3 compliance, making it the primary choice for designs requiring preservation of original electrical specifications.

For Active Production with Functional Equivalence

SMCJ36CA-E3/9AT (Vishay General Semiconductor), SMCJ36CA (EVVO Semi), SMCJ36CA-13-F (Diodes Incorporated), SMCJ36CA-HR (Littelfuse Inc.), and SMCJ36CA-HRA (Littelfuse Inc.) are all active production parts with 36V reverse standoff voltage and 58.1V clamping voltage. These parts are suitable where the reduced clamping voltage (6.2V lower than original) remains acceptable for circuit protection requirements. All maintain 1500W peak pulse power and ROHS3 compliance.

For Enhanced Transient Energy Dissipation

5.0SMDJ36CA (HY Electronic) and 5.0SMDJ36CA-T7 (Littelfuse Inc.) offer 86.1A peak pulse current and 5000W peak pulse power, providing superior transient suppression capability. These parts are applicable in designs where higher energy absorption is required, with identical 36V reverse standoff voltage and 58.1V clamping voltage.

Not Recommended

SMCJ33CA (MDD) features a 33V reverse standoff voltage, which is 3V lower than the original specification. This part is suitable only for applications where the reduced protection threshold is acceptable and does not compromise circuit safety margins.

Frequently Asked Questions (FAQ)

Q: Can SMCJ36CA-E3/9AT directly replace SMCJ36C-E3/9AT?

A: Yes. Both parts share identical reverse standoff voltage (36V), package type (DO-214AB), and operating temperature range (-55°C to 150°C). The SMCJ36CA-E3/9AT has a lower clamping voltage (58.1V vs. 64.3V) and slightly higher peak pulse current (25.8A vs. 23.3A). This substitution is valid where the reduced clamping voltage remains within circuit protection margins.

Q: What is the difference between SMCJ36CA and SMCJ36CA-HR?

A: Both parts have identical electrical specifications (36V standoff, 58.1V clamping, 25.9A peak pulse current) and package type (DO-214AB). The primary difference is the operating temperature range: SMCJ36CA-HR extends to -65°C minimum, compared to -55°C for standard SMCJ36CA. The "-HR" designation indicates high-reliability variant with extended temperature performance.

Q: When should 5.0SMDJ36CA-T7 be selected over SMCJ36CA variants?

A: 5.0SMDJ36CA-T7 is selected when circuit transient energy exceeds 1500W. This part dissipates up to 5000W peak pulse power with 86.1A peak pulse current, providing enhanced protection for high-energy transient environments. The 36V reverse standoff voltage and 58.1V clamping voltage remain compatible with the original design.

Q: Is SMCJ33CA a suitable substitute?

A: SMCJ33CA is not recommended as a direct substitute. The 33V reverse standoff voltage is 3V lower than the original 36V specification, reducing the protection threshold. This part is applicable only in designs where the lower standoff voltage does not compromise circuit safety or performance requirements.

Q: What packaging options are available for SMCJ36CA variants?

A: SMCJ36CA variants are available in multiple packaging formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) with Digi-Reel for manual or semi-automated placement, and standard DO-214AB (SMCJ) package. Selection depends on assembly process requirements and volume.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the original SMCJ36C-E3/9AT specification. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture-related handling restrictions.

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