CD214C-T54ALF Equivalent & Substitute Parts

Part Overview

The CD214C-T54ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., classified as an obsolete product. This unidirectional Zener diode is designed for general-purpose transient voltage suppression in surface mount applications using the DO-214AB (SMC) package. With a reverse standoff voltage of 54V, breakdown voltage minimum of 60V, and clamping voltage of 87.1V at peak pulse current of 17.2A, the CD214C-T54ALF provides 1500W peak pulse power dissipation.

Due to its obsolete status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214C-T54ALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	54V
Voltage - Breakdown (Min)	60V
Voltage - Clamping (Max) @ Ipp	87.1V
Current - Peak Pulse (10/1000µs)	17.2A
Power - Peak Pulse	1500W (1.5kW)
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AB, SMC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the CD214C-T54ALF are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Functionally Identical): Parts that maintain identical electrical specifications across all critical parameters: 54V reverse standoff voltage, 60V minimum breakdown voltage, 87.1V clamping voltage, 17.2A–17.3A peak pulse current, 1500W peak pulse power, and DO-214AB (SMC) package. These parts are pin-for-pin compatible and require no circuit modifications.

Similar Alternatives (Higher Power Rating): Parts that share the same voltage specifications (54V standoff, 60V breakdown, 87.1V clamping) and package (DO-214AB/SMC) but feature higher peak pulse current ratings (34.5A–57.5A) and correspondingly higher power dissipation (3000W–5000W). These parts are mechanically and electrically compatible but provide enhanced transient suppression capability.

Key Parameters Determining Substitution:

Reverse standoff voltage: 54V (fixed)
Breakdown voltage minimum: 60V (fixed)
Clamping voltage: 87.1V (fixed)
Package type: DO-214AB (SMC) (fixed)
Unidirectional configuration: 1 channel (fixed)
Peak pulse current: 17.2A–57.5A (variable)
Peak pulse power: 1500W–5000W (variable)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status	RoHS Status
CD214C-T54ALF	Bourns Inc.	54V	60V	87.1V	17.2A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Obsolete	ROHS3 Compliant
SMCJ54A	Meritek	54V	60V	87.1V	17.22A	1500W	-55°C ~ 150°C	DO-214AB (SMC)	Active	ROHS3 Compliant
SMCJ54A-HR	Littelfuse Inc.	54V	60V	87.1V	17.3A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ54A-HRA	Littelfuse	54V	60V	87.1V	17.3A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ54A-HRAT7	Littelfuse Inc.	54V	60V	87.1V	17.3A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active	ROHS3 Compliant
SMCJ54A-TP	Micro Commercial Co	54V	60V	87.1V	17.3A	1500W	-55°C ~ 175°C	DO-214AB, SMC	Active	ROHS3 Compliant
SMDJ54A	Alpha & Omega Semiconductor Inc.	54V	60V	87.1V	34.5A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ54A	Taiwan Semiconductor Corporation	54V	60V	87.1V	57.5A	5000W	-55°C ~ 175°C	DO-214AB, SMC	Active	ROHS3 Compliant
5.0SMDJ54A-T7	Littelfuse	54V	60V	87.1V	57.5A	5000W	-65°C ~ 150°C	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection (1:1 Replacement):

SMCJ54A (Meritek) is the primary direct equivalent. It maintains identical voltage specifications (54V standoff, 60V breakdown, 87.1V clamping), peak pulse current (17.22A), power rating (1500W), and package (DO-214AB/SMC). The part is ROHS3 compliant with MSL 1 rating and active product status, ensuring long-term availability.

SMCJ54A-HR, SMCJ54A-HRA, and SMCJ54A-HRAT7 (all Littelfuse variants) are functionally equivalent with marginally higher peak pulse current (17.3A) and extended lower operating temperature limit (-65°C vs. -55°C). These parts are suitable for applications requiring enhanced low-temperature performance.

SMCJ54A-TP (Micro Commercial Co) provides identical electrical specifications with extended upper operating temperature range (-55°C to 175°C), making it suitable for high-temperature environments.

Higher Power Alternative Selection:

SMDJ54A (Alpha & Omega Semiconductor Inc.) doubles the peak pulse current (34.5A) and power dissipation (3000W) while maintaining identical voltage characteristics and DO-214AB package. This part is appropriate for applications experiencing higher transient energy levels.

5.0SMDJ54A (Taiwan Semiconductor Corporation) and 5.0SMDJ54A-T7 (Littelfuse) provide the highest power rating (5000W) with peak pulse current of 57.5A. These parts are suitable for demanding transient suppression applications requiring maximum energy absorption capability.

All substitute parts are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the original CD214C-T54ALF.

Frequently Asked Questions (FAQ)

Q: Can SMCJ54A directly replace CD214C-T54ALF without circuit modifications?

A: Yes. SMCJ54A maintains identical voltage specifications (54V standoff, 60V breakdown, 87.1V clamping), peak pulse current (17.22A), power rating (1500W), and DO-214AB (SMC) package. No circuit modifications are required.

Q: What is the difference between direct equivalents and higher-power alternatives?

A: Direct equivalents (SMCJ54A series) maintain the original 1500W power rating and 17.2A–17.3A peak pulse current. Higher-power alternatives (SMDJ54A, 5.0SMDJ54A series) provide 3000W–5000W power dissipation with correspondingly higher peak pulse currents (34.5A–57.5A). All share identical voltage specifications and package type.

Q: Are all substitute parts available in the same DO-214AB (SMC) package?

A: Yes. All listed substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical and thermal compatibility with the original CD214C-T54ALF footprint.

Q: Which substitute part offers the widest operating temperature range?

A: SMCJ54A-TP (Micro Commercial Co) provides the widest upper temperature limit at 175°C, compared to 150°C for most alternatives. For extended lower temperature operation, SMCJ54A-HR, SMCJ54A-HRA, SMCJ54A-HRAT7, and 5.0SMDJ54A-T7 extend to -65°C.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the regulatory status of the original CD214C-T54ALF.

Q: What is the MSL (Moisture Sensitivity Level) rating for substitute parts?

A: All substitute parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage and handling.

Q: Can higher-power alternatives be used in place of direct equivalents?

A: Yes. SMDJ54A, 5.0SMDJ54A, and 5.0SMDJ54A-T7 are electrically and mechanically compatible with the CD214C-T54ALF. Higher power ratings provide enhanced transient suppression capability without affecting circuit operation. No modifications are required.

Q: Which manufacturers provide substitute parts?

A: Active substitute parts are available from Meritek (SMCJ54A), Littelfuse Inc. (SMCJ54A-HR, SMCJ54A-HRA, SMCJ54A-HRAT7, 5.0SMDJ54A-T7), Micro Commercial Co (SMCJ54A-TP), Alpha & Omega Semiconductor Inc. (SMDJ54A), and Taiwan Semiconductor Corporation (5.0SMDJ54A).

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