CD214L-T24CALF Equivalent & Substitute Parts

Part Overview

The CD214L-T24CALF 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 24V reverse standoff voltage with a 38.9V maximum clamping voltage and 77.2A 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
Voltage - Reverse Standoff (Typ)	24V
Voltage - Breakdown (Min)	26.7V
Voltage - Clamping (Max) @ Ipp	38.9V
Current - Peak Pulse (10/1000µs)	77.2A
Power - Peak Pulse	3000W (3kW)
Package / Case	DO-214AB, SMC
Operating Temperature Range	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CD214L-T24CALF is determined by strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

Voltage - Reverse Standoff: 24V (exact match required)
Voltage - Clamping (Max) @ Ipp: 38.9V (exact match required)
Package / Case: DO-214AB, SMC (mechanical compatibility)
Type: Zener, Bidirectional, 1 Channel (functional equivalence)

Substitution Categories:

Direct Equivalents (identical electrical specifications):

SMLJ24CA (Bourns Inc.) – Active status, same 77.2A peak pulse current, 3000W power rating
SMDJ24CA (Alpha & Omega Semiconductor Inc.) – Active status, same 77.2A peak pulse current, 3000W power rating

Functional Equivalents (same voltage parameters, reduced current/power):

SMCJ24CA (MDD) – 38.6A peak pulse current, 1500W power rating
SMCJ24CA-TP (Micro Commercial Co) – 38.6A peak pulse current, 1500W power rating
TV15C240JB-HF (Comchip Technology) – 38.56A peak pulse current, 1500W power rating

Enhanced Equivalents (same voltage parameters, increased current/power):

5.0SMDJ24CA (MDE Semiconductor Inc) – 129A peak pulse current, 5000W power rating
5.0SMDJ24CA-T7 (Littelfuse Inc.) – 129A peak pulse current, 5000W power rating

Parameter Comparison

Part Number	Manufacturer	Status	Voltage - Reverse Standoff	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Package	Operating Temp Range
CD214L-T24CALF	Bourns Inc.	Obsolete	24V	38.9V	77.2A	3000W	DO-214AB, SMC	-55°C ~ 150°C
SMLJ24CA	Bourns Inc.	Active	24V	38.9V	77.2A	3000W	DO-214AB, SMC	-55°C ~ 150°C
SMDJ24CA	Alpha & Omega Semiconductor Inc.	Active	24V	38.9V	77.2A	3000W	DO-214AB, SMC	-55°C ~ 150°C
SMCJ24CA	MDD	Active	24V	38.9V	38.6A	1500W	DO-214AB, SMC	-50°C ~ 150°C
SMCJ24CA-TP	Micro Commercial Co	Active	24V	38.9V	38.6A	1500W	DO-214AB, SMC	-55°C ~ 175°C
TV15C240JB-HF	Comchip Technology	Active	24V	38.9V	38.56A	1500W	DO-214AB, SMC	-55°C ~ 150°C
5.0SMDJ24CA	MDE Semiconductor Inc	Active	24V	38.9V	129A	5000W	DO-214AB, SMC	-55°C ~ 150°C
5.0SMDJ24CA-T7	Littelfuse Inc.	Active	24V	38.9V	129A	5000W	DO-214AB, SMC	-65°C ~ 150°C

Engineering Selection Recommendations

For Direct Replacement (Identical Performance): SMLJ24CA or SMDJ24CA are preferred selections. Both maintain the original 77.2A peak pulse current and 3000W power dissipation. SMLJ24CA is manufactured by the original supplier (Bourns Inc.) and carries active product status with full RoHS3 compliance. SMDJ24CA from Alpha & Omega Semiconductor Inc. provides equivalent electrical performance with active status and established supply availability.

For Reduced Current Applications: SMCJ24CA, SMCJ24CA-TP, or TV15C240JB-HF are suitable when circuit requirements do not exceed 38.6A peak pulse current and 1500W power dissipation. These parts maintain identical voltage parameters and package compatibility. SMCJ24CA-TP extends the upper operating temperature to 175°C, providing thermal margin in high-temperature environments.

For Enhanced Current Capacity: 5.0SMDJ24CA or 5.0SMDJ24CA-T7 accommodate applications requiring higher transient current handling (129A) and power dissipation (5000W). These parts maintain voltage specifications and package compatibility while providing increased protection margin. 5.0SMDJ24CA-T7 from Littelfuse Inc. extends the lower operating temperature to -65°C for cold environment applications.

Compliance Considerations: All substitute parts maintain ROHS3 compliance. Selection should account for supply chain availability, lead time, and established qualification history within the target application.

Frequently Asked Questions (FAQ)

Q: Can SMCJ24CA replace CD214L-T24CALF directly? A: SMCJ24CA is mechanically and electrically compatible in the voltage domain (24V standoff, 38.9V clamping). However, it provides reduced peak pulse current (38.6A versus 77.2A) and power dissipation (1500W versus 3000W). Selection depends on circuit transient current requirements. If the original design operates below 38.6A peak pulse, substitution is valid.

Q: What is the difference between SMLJ24CA and SMDJ24CA? A: Both parts provide identical electrical specifications (77.2A peak pulse, 3000W power, 24V standoff, 38.9V clamping) and package compatibility. SMLJ24CA is manufactured by Bourns Inc. (original supplier), while SMDJ24CA is from Alpha & Omega Semiconductor Inc. Selection may be based on supply availability and established supplier relationships.

Q: Are the 5.0SMDJ24CA variants backward compatible? A: Yes. The 5.0SMDJ24CA and 5.0SMDJ24CA-T7 maintain identical voltage parameters (24V standoff, 38.9V clamping) and package form factor. They provide enhanced current and power ratings (129A, 5000W), making them suitable for designs requiring higher transient protection margin. No circuit modification is required for substitution.

Q: Does operating temperature range affect substitution? A: Operating temperature range should be verified against application requirements. CD214L-T24CALF operates -55°C to 150°C. SMCJ24CA-TP extends to 175°C, while 5.0SMDJ24CA-T7 extends to -65°C. Selection should ensure the substitute part's temperature range encompasses the target application environment.

Q: Are all substitute parts available in tape and reel packaging? A: Packaging varies by manufacturer and part number. SMLJ24CA, 5.0SMDJ24CA, 5.0SMDJ24CA-T7, SMCJ24CA-TP, SMDJ24CA, and TV15C240JB-HF are available in tape and reel. SMCJ24CA packaging is not specified. Verify packaging requirements with supplier documentation before procurement.

Q: What compliance certifications apply to all substitutes? A: All substitute parts maintain ROHS3 compliance. REACH status varies: SMLJ24CA and CD214L-T24CALF are REACH Affected; remaining substitutes are REACH Unaffected. Verify REACH compliance requirements for the target application and geographic market.

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