CD214C-T15ALF Equivalent & Substitute Parts

Part Overview

The CD214C-T15ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This unidirectional Zener diode features a 15V reverse standoff voltage with 24.4V clamping capability at 61.5A peak pulse current and 1500W peak pulse power dissipation. The component is housed in a DO-214AB (SMC) package and is ROHS3 compliant with unlimited moisture sensitivity rating.

The CD214C-T15ALF is classified as obsolete. 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
Voltage - Reverse Standoff (Typ)	15V
Voltage - Breakdown (Min)	16.7V
Voltage - Clamping (Max) @ Ipp	24.4V
Current - Peak Pulse (10/1000µs)	61.5A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Operating Temperature Range	-55°C ~ 150°C
Type	Zener
Unidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CD214C-T15ALF are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Electrical & Package Equivalents): Parts that maintain identical electrical specifications (15V standoff, 16.7V breakdown, 24.4V clamping, 61.5A peak pulse current, 1500W peak pulse power) and use the same DO-214AB (SMC) package form factor. These parts are pin-compatible and functionally interchangeable without circuit modification.

Similar Substitutes (Enhanced Specifications): Parts that maintain the same voltage ratings (15V standoff, 16.7V breakdown, 24.4V clamping) and package form factor but feature higher peak pulse current ratings (205A) and increased power dissipation (5000W). These parts provide superior transient protection capability and are backward-compatible for applications requiring enhanced surge handling.

Key Parameters Determining Substitution:

Voltage - Reverse Standoff: 15V (fixed requirement)
Voltage - Breakdown (Min): 16.7V (fixed requirement)
Voltage - Clamping (Max) @ Ipp: 24.4V (fixed requirement)
Package / Case: DO-214AB, SMC (fixed requirement)
Type: Zener, Unidirectional (fixed requirement)
RoHS Status: ROHS3 Compliant (compliance requirement)

Parameter Comparison

Part Number	Manufacturer	Status	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Package	Operating Temp Range	RoHS Status
CD214C-T15ALF	Bourns Inc.	Obsolete	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-55°C ~ 150°C	ROHS3
SMCJ15A	EVVO Semi	Active	15V	16.7V	24.4V	61.5A	600W	DO-214AC, SMA	-65°C ~ 150°C	ROHS3
5.0SMDJ15A	MDE Semiconductor Inc	Active	15V	16.7V	24.4V	205A	5000W	DO-214AB, SMC	-55°C ~ 150°C	ROHS3
5.0SMDJ15A-T7	Littelfuse Inc.	Active	15V	16.7V	24.4V	205A	5000W	DO-214AB, SMC	-65°C ~ 150°C	ROHS3
SMCJ15A-HR	Littelfuse Inc.	Active	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-65°C ~ 150°C	ROHS3
SMCJ15A-HRA	Littelfuse Inc.	Active	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-65°C ~ 150°C	ROHS3
SMCJ15A-HRAT7	Littelfuse Inc.	Active	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-65°C ~ 150°C	ROHS3
SMCJ15A-M3/57T	Vishay General Semiconductor - Diodes Division	Active	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-55°C ~ 150°C	ROHS3
SMCJ15A-M3/9AT	Vishay General Semiconductor - Diodes Division	Active	15V	16.7V	24.4V	61.5A	1500W	DO-214AB, SMC	-55°C ~ 150°C	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Identical Electrical & Package Specifications):

SMCJ15A-HR, SMCJ15A-HRA, SMCJ15A-HRAT7 (Littelfuse Inc.), SMCJ15A-M3/57T, and SMCJ15A-M3/9AT (Vishay General Semiconductor - Diodes Division) are recommended as primary substitutes. These parts maintain the original 61.5A peak pulse current and 1500W power dissipation in the DO-214AB (SMC) package. All are active products with ROHS3 compliance and unlimited moisture sensitivity rating. Littelfuse variants support extended operating temperature range (-65°C to 150°C) compared to the original specification (-55°C to 150°C).

Secondary Substitutes (Enhanced Current & Power Rating):

5.0SMDJ15A (MDE Semiconductor Inc.) and 5.0SMDJ15A-T7 (Littelfuse Inc.) are suitable for applications requiring enhanced transient protection. These parts maintain identical voltage specifications and DO-214AB (SMC) package form factor but provide 205A peak pulse current and 5000W power dissipation. These higher-rated components are backward-compatible and suitable for designs with increased surge protection requirements.

Package Consideration:

SMCJ15A (EVVO Semi) maintains identical voltage specifications but uses DO-214AC (SMA) package instead of DO-214AB (SMC). This part is not recommended for direct replacement without PCB layout modification, as the package footprints are not interchangeable. Peak pulse power is also reduced to 600W.

All recommended substitutes are ROHS3 compliant and maintain the required electrical characteristics for general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can SMCJ15A-HR be used as a direct replacement for CD214C-T15ALF?

A: Yes. SMCJ15A-HR maintains identical voltage ratings (15V standoff, 16.7V breakdown, 24.4V clamping), peak pulse current (61.5A), power dissipation (1500W), and package form factor (DO-214AB, SMC). The part is pin-compatible and requires no circuit modification.

Q: What is the difference between SMCJ15A-HR and 5.0SMDJ15A-T7?

A: Both parts use the DO-214AB (SMC) package and maintain identical voltage specifications. The primary difference is peak pulse current and power rating: SMCJ15A-HR is rated for 61.5A and 1500W, while 5.0SMDJ15A-T7 is rated for 205A and 5000W. The higher-rated part provides enhanced transient protection capability.

Q: Why is SMCJ15A (EVVO Semi) not recommended as a direct substitute?

A: Although SMCJ15A maintains the required voltage specifications and peak pulse current, it uses a DO-214AC (SMA) package instead of the original DO-214AB (SMC) package. These packages have different footprints and are not interchangeable on the PCB. Additionally, the peak pulse power rating is reduced to 600W compared to the original 1500W specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts listed in the parameter comparison table are ROHS3 compliant and meet the same environmental compliance requirements as the original CD214C-T15ALF.

Q: What is the operating temperature range difference between substitutes?

A: The original CD214C-T15ALF and Vishay parts (SMCJ15A-M3/57T, SMCJ15A-M3/9AT) operate from -55°C to 150°C. Littelfuse variants (SMCJ15A-HR, SMCJ15A-HRA, SMCJ15A-HRAT7) and 5.0SMDJ15A-T7 extend the lower operating limit to -65°C, providing wider temperature range coverage.

Q: Can higher-rated parts like 5.0SMDJ15A be used in place of the original specification?

A: Yes. Higher-rated TVS diodes with identical voltage specifications are backward-compatible. The 5.0SMDJ15A series provides superior transient protection with 205A peak pulse current and 5000W power dissipation while maintaining the same voltage clamping characteristics and package form factor.

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