CD214L-T54CALF Equivalent & Substitute Parts

Part Overview

The CD214L-T54CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection applications. This component features a 54V reverse standoff voltage with an 87.1V maximum clamping voltage and 34.4A peak pulse current capability in a surface-mount DO-214AB (SMC) package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	54V
Voltage - Breakdown (Min)	60V
Voltage - Clamping (Max) @ Ipp	87.1V
Current - Peak Pulse (10/1000µs)	34.4A
Power - Peak Pulse	3000W (3kW)
Package / Case	DO-214AB, SMC
Operating Temperature	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CD214L-T54CALF is determined by strict alignment of electrical and mechanical parameters. The critical parameters that define substitutability are:

Voltage - Reverse Standoff: 54V (exact match required)
Voltage - Clamping (Max) @ Ipp: 87.1V (exact match required)
Package / Case: DO-214AB, SMC (exact match required)
Current - Peak Pulse (10/1000µs): 34.4A minimum (equal or greater acceptable)
Power - Peak Pulse: 3000W minimum (equal or greater acceptable)
Operating Temperature Range: -55°C minimum to 150°C maximum (equal or wider range acceptable)
RoHS Status: ROHS3 Compliant (required)

Substitute parts are categorized into two groups:

Direct Equivalents meet all electrical parameters and power ratings of the original part.

Similar Alternatives maintain voltage specifications and package compatibility but operate at reduced peak pulse current and power dissipation levels. These parts are suitable only for applications where the lower current/power ratings are acceptable.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status
CD214L-T54CALF	Bourns Inc.	54V	87.1V	34.4A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Obsolete
SMLJ54CA	Bourns Inc.	54V	87.1V	34.4A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ54CA	Alpha & Omega Semiconductor Inc.	54V	87.1V	34.5A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMCJ54CA-TP	Micro Commercial Co	54V	87.1V	17.3A	1500W	-55°C ~ 175°C	DO-214AB, SMC	Active
SMCJ54CA	Meritek	54V	87.1V	17.22A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Direct Equivalents (Full Specification Match):

SMLJ54CA (Bourns Inc.) and SMDJ54CA (Alpha & Omega Semiconductor Inc.) are direct functional equivalents to the CD214L-T54CALF. Both parts maintain identical voltage specifications, peak pulse current ratings, and power dissipation capabilities. SMLJ54CA is manufactured by the original equipment supplier, ensuring design continuity. SMDJ54CA provides an alternative source from an active manufacturer. Both parts are ROHS3 compliant and suitable for direct substitution in applications requiring the full 34.4A peak pulse current and 3000W power rating.

Similar Alternatives (Reduced Power Rating):

SMCJ54CA-TP (Micro Commercial Co) and SMCJ54CA (Meritek) maintain voltage compatibility and package specifications but operate at reduced peak pulse current (17.3A and 17.22A respectively) and power dissipation (1500W). These parts are suitable only for applications where transient energy levels do not exceed the reduced power rating. SMCJ54CA-TP offers an extended operating temperature range (-55°C ~ 175°C), providing thermal margin in high-temperature environments. Both alternatives are ROHS3 compliant and active products.

Frequently Asked Questions (FAQ)

Q: Can SMCJ54CA or SMCJ54CA-TP be used as direct replacements for CD214L-T54CALF?

A: These parts are compatible for voltage protection but not for applications requiring the full 34.4A peak pulse current or 3000W power dissipation. Use these alternatives only if your circuit's transient energy is limited to 1500W or less.

Q: What is the difference between SMLJ54CA and SMDJ54CA?

A: Both are direct electrical equivalents with identical voltage and power ratings. SMLJ54CA is manufactured by Bourns Inc., the original supplier. SMDJ54CA is manufactured by Alpha & Omega Semiconductor Inc. Selection depends on supply chain availability and preferred supplier qualification.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts use the DO-214AB (SMC) surface-mount package, ensuring mechanical compatibility. Packaging formats (Tape & Reel, Cut Tape, or bulk) vary by manufacturer and supplier. Verify packaging availability with your component distributor.

Q: Does the extended temperature range of SMCJ54CA-TP provide an advantage?

A: SMCJ54CA-TP operates to 175°C junction temperature compared to 150°C for the original part. This extended range is beneficial only in high-temperature applications. For standard operating conditions, this parameter is not a differentiating factor.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original CD214L-T54CALF.

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