CD214L-T28CALF Equivalent & Substitute Parts

Part Overview

The CD214L-T28CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 28V reverse standoff voltage with a 45.4V maximum clamping voltage and 66A peak pulse current capability in a DO-214AB (SMC) package. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214L-T28CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	28V
Voltage - Breakdown (Min)	31.1V
Voltage - Clamping (Max) @ Ipp	45.4V
Current - Peak Pulse (10/1000µs)	66A
Power - Peak Pulse	3000W (3kW)
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CD214L-T28CALF is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff: 28V (±tolerance)
Voltage - Clamping (Max) @ Ipp: 45.4V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Substitute parts are grouped into two categories based on peak pulse current capability:

Direct Equivalents (66A Ipp): Parts with identical peak pulse current and power dissipation matching the original specification.

Enhanced Equivalents (110A Ipp / 5kW): Parts with higher peak pulse current and power handling, suitable for applications requiring increased transient protection margin while maintaining voltage parameters.

All substitute parts maintain the same voltage protection characteristics and package footprint, ensuring mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status	RoHS Status
CD214L-T28CALF	Bourns Inc.	28V	45.4V	66A	3000W	DO-214AB, SMC	-55°C ~ 150°C	Obsolete	ROHS3 Compliant
SMLJ28CA	Bourns Inc.	28V	45.4V	66A	3000W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
SMDJ28CA	Alpha & Omega Semiconductor Inc.	28V	45.4V	66.1A	3000W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
SMLJ28CA-TP	Micro Commercial Co	28V	45.4V	66A	3000W	DO-214AB, SMC	-55°C ~ 175°C	Active	ROHS3 Compliant
SMCJ28CA	Fairchild Semiconductor	28V	45.4V	33.1A	1500W	DO-214AB, SMC	-55°C ~ 150°C	Active	Not specified
SMCJ28CA-TP	Micro Commercial Co	28V	45.4V	33.1A	1500W	DO-214AB, SMC	-55°C ~ 175°C	Active	ROHS3 Compliant
5.0SMDJ28CA	MDE Semiconductor Inc	28V	45.4V	110A	5000W	DO-214AB, SMC	-55°C ~ 150°C	Active	ROHS3 Compliant
5.0SMDJ28CA-T7	Littelfuse Inc.	28V	45.4V	110A	5000W	DO-214AB, SMC	-65°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

SMLJ28CA (Bourns Inc.) and SMDJ28CA (Alpha & Omega Semiconductor Inc.) are the preferred direct replacements. Both maintain identical voltage parameters, peak pulse current (66A nominal), and power dissipation (3000W) as the original CD214L-T28CALF. Both parts are active products with ROHS3 compliance and established supply availability.

Secondary Substitutes (Reduced Current Rating):

SMCJ28CA (Fairchild Semiconductor) and SMCJ28CA-TP (Micro Commercial Co) provide equivalent voltage protection with reduced peak pulse current (33.1A) and power handling (1500W). These parts are suitable for applications with lower transient energy requirements while maintaining the same voltage clamping characteristics.

Enhanced Substitutes (Increased Current Rating):

5.0SMDJ28CA (MDE Semiconductor Inc) and 5.0SMDJ28CA-T7 (Littelfuse Inc.) offer higher peak pulse current (110A) and power dissipation (5000W) while maintaining identical voltage parameters. These parts provide additional protection margin for high-energy transient environments. The 5.0SMDJ28CA-T7 extends the lower operating temperature limit to -65°C.

All substitute parts are active products with ROHS3 compliance and are available in surface-mount DO-214AB (SMC) packaging, ensuring mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can SMCJ28CA replace CD214L-T28CALF directly?

A: SMCJ28CA maintains identical voltage parameters (28V standoff, 45.4V clamping) and package (DO-214AB, SMC), but has reduced peak pulse current (33.1A vs. 66A) and power dissipation (1500W vs. 3000W). It is suitable only for applications with lower transient energy requirements.

Q: What is the difference between the 66A and 110A variants?

A: The 110A variants (5.0SMDJ28CA and 5.0SMDJ28CA-T7) provide higher peak pulse current and power dissipation (5000W) compared to the 66A variants (3000W). Voltage protection characteristics remain identical. Selection depends on the transient energy level in the application.

Q: Are all substitute parts ROHS3 compliant?

A: SMLJ28CA, SMDJ28CA, SMLJ28CA-TP, SMCJ28CA-TP, 5.0SMDJ28CA, and 5.0SMDJ28CA-T7 are ROHS3 compliant. SMCJ28CA (Fairchild Semiconductor) does not specify RoHS status in the provided data.

Q: Does operating temperature range affect substitution?

A: Most substitutes operate within -55°C to 150°C, matching the original part. SMLJ28CA-TP and SMCJ28CA-TP extend the upper limit to 175°C. The 5.0SMDJ28CA-T7 extends the lower limit to -65°C. Selection should account for application temperature requirements.

Q: Are all substitute parts available in tape and reel packaging?

A: SMLJ28CA, 5.0SMDJ28CA, 5.0SMDJ28CA-T7, SMCJ28CA-TP, SMDJ28CA, and SMLJ28CA-TP are available in tape and reel (TR) packaging. SMCJ28CA packaging is not specified in the provided data.

Q: What is the mechanical compatibility of substitute parts?

A: All substitute parts use the DO-214AB (SMC) package and surface-mount configuration, ensuring identical PCB footprint and reflow soldering compatibility with designs originally specified for CD214L-T28CALF.

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