CD214C-T24CALF Equivalent & Substitute Parts

Part Overview

The CD214C-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 38.6A peak pulse current capability in a DO-214AB (SMC) package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214C-T24CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	24V
Voltage - Breakdown (Min)	26.7V
Voltage - Clamping (Max) @ Ipp	38.9V
Current - Peak Pulse (10/1000µs)	38.6A
Power - Peak Pulse	1500W (1.5kW)
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the CD214C-T24CALF is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Voltage - Reverse Standoff: 24V
Voltage - Breakdown (Min): 26.7V
Voltage - Clamping (Max) @ Ipp: 38.9V
Current - Peak Pulse (10/1000µs): 38.6A
Power - Peak Pulse: 1500W (1.5kW)
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Type: Zener, Bidirectional

Substitute parts are classified into two categories:

Direct Equivalents: Parts meeting all primary equivalence criteria with identical electrical performance and package specifications. These parts are pin-compatible and functionally interchangeable without circuit modification.

Similar Alternatives: Parts sharing the same voltage rating, package, and mounting type but with variations in peak pulse current, power dissipation, or operating temperature range. These parts provide equivalent voltage protection but may offer enhanced performance characteristics. Selection requires verification that the application does not depend on the specific current or power limitations of the original part.

Parameter Comparison

Part Number	Manufacturer	Status	Voltage RWM (V)	Voltage Breakdown Min (V)	Voltage Clamp Max (V)	Current Peak Pulse (A)	Power Peak Pulse (W)	Temp Range (°C)	Package
CD214C-T24CALF	Bourns Inc.	Obsolete	24	26.7	38.9	38.6	1500	-55 to 150	DO-214AB
SMCJ24CA	MDD	Active	24	26.7	38.9	38.6	1500	-50 to 150	DO-214AB
TV15C240JB-HF	Comchip Technology	Active	24	26.7	38.9	38.56	1500	-55 to 150	DO-214AB
SMCJ24CA-TP	Micro Commercial Co	Active	24	26.7	38.9	38.6	1500	-55 to 175	DO-214AB
SMCJ24CA-TR	STMicroelectronics	Active	24	26.7	50	200	1500	-55 to 150	DO-214AB
5.0SMDJ24CA	MDE Semiconductor Inc	Active	24	26.7	38.9	129	5000	-55 to 150	DO-214AB
5.0SMDJ24CA-T7	Littelfuse Inc.	Active	24	26.7	38.9	129	5000	-65 to 150	DO-214AB
SMDJ24CA	Alpha & Omega Semiconductor Inc.	Active	24	26.7	38.9	77.2	3000	-55 to 150	DO-214AB

Engineering Selection Recommendations

Direct Equivalents (Recommended for Drop-In Replacement):

SMCJ24CA (MDD) and TV15C240JB-HF (Comchip Technology) provide direct functional equivalence to the CD214C-T24CALF. Both parts maintain identical voltage ratings (24V RWM, 26.7V breakdown, 38.9V clamp) and current specifications (38.6A peak pulse, 1500W peak power) in the DO-214AB package. Both manufacturers maintain active product status with ROHS3 compliance and unlimited moisture sensitivity rating. SMCJ24CA-TP (Micro Commercial Co) offers equivalent electrical performance with extended operating temperature range to 175°C, providing additional thermal margin for high-temperature applications.

Enhanced Performance Alternatives:

SMCJ24CA-TR (STMicroelectronics) maintains the 24V voltage rating and 1500W power specification but features increased clamping voltage (50V) and peak pulse current (200A). This part is suitable for applications where higher transient current handling is beneficial without circuit redesign.

5.0SMDJ24CA (MDE Semiconductor Inc) and 5.0SMDJ24CA-T7 (Littelfuse Inc.) provide significantly enhanced performance with 129A peak pulse current and 5000W peak power dissipation while maintaining the 24V voltage rating and 38.9V clamping voltage. These parts are applicable in high-energy transient environments. The Littelfuse variant extends operating temperature to -65°C, suitable for extended low-temperature applications.

SMDJ24CA (Alpha & Omega Semiconductor Inc.) offers intermediate performance with 77.2A peak pulse current and 3000W peak power, bridging the gap between standard and high-performance options.

All substitute parts are ROHS3 compliant and maintain active product status, ensuring long-term supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can SMCJ24CA-TR be used as a direct replacement for CD214C-T24CALF?

A: SMCJ24CA-TR shares the same 24V reverse standoff voltage, 26.7V breakdown voltage, and DO-214AB package. However, the clamping voltage is 50V (versus 38.9V) and peak pulse current is 200A (versus 38.6A). This part is electrically compatible for overvoltage protection but will clamp at a higher voltage. Use only if the application circuit can tolerate 50V clamping without component damage.

Q: What is the difference between SMCJ24CA and 5.0SMDJ24CA?

A: Both parts maintain the 24V voltage rating and 38.9V clamping voltage. The primary difference is peak pulse current and power dissipation: SMCJ24CA handles 38.6A and 1500W, while 5.0SMDJ24CA handles 129A and 5000W. The 5.0SMDJ series is designed for higher-energy transient events. Select based on the maximum transient current your circuit may experience.

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

A: All listed substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical and electrical compatibility with the original CD214C-T24CALF footprint. Packaging variants (Tape & Reel, Cut Tape) differ by supplier but do not affect component performance or PCB mounting.

Q: Why is the CD214C-T24CALF obsolete?

A: The CD214C-T24CALF is classified as obsolete by Bourns Inc. Multiple active alternatives from established manufacturers (MDD, Comchip Technology, STMicroelectronics, Littelfuse, Alpha & Omega Semiconductor) provide equivalent or superior performance, making the original part unnecessary for new designs and field replacements.

Q: Can I use SMCJ24CA-TP with its extended temperature range (-55°C to 175°C) in place of the original part rated to 150°C?

A: Yes. SMCJ24CA-TP maintains all electrical specifications identical to CD214C-T24CALF (24V RWM, 26.7V breakdown, 38.9V clamp, 38.6A peak pulse, 1500W power) and extends the upper operating temperature limit to 175°C. This part is a direct replacement suitable for applications requiring higher thermal performance.

Q: What compliance certifications apply to these substitute parts?

A: All listed substitute parts are ROHS3 compliant and carry EAR99 ECCN classification. REACH status varies by manufacturer: MDD SMCJ24CA is REACH Unaffected; other manufacturers' parts are REACH Unaffected. Verify specific REACH compliance requirements with your supply chain for your application region.

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