CD214C-T20CALF Equivalent & Substitute Parts

Part Overview

The CD214C-T20CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This bidirectional zener diode features a 20V reverse standoff voltage with 32.4V clamping capability and 46.3A peak pulse current handling in a DO-214AB (SMC) package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214C-T20CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener, Bidirectional
Package / Case	DO-214AB, SMC
Voltage - Reverse Standoff (Typ)	20V
Voltage - Breakdown (Min)	22.2V
Voltage - Clamping (Max) @ Ipp	32.4V
Current - Peak Pulse (10/1000µs)	46.3A
Power - Peak Pulse	1500W
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the CD214C-T20CALF is determined by strict electrical and mechanical compatibility across the following parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff: 20V
Voltage - Clamping (Max) @ Ipp: 32.4V
Voltage - Breakdown (Min): 22.2V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Type: Zener, Bidirectional
Bidirectional Channels: 1

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): 46.3A minimum (higher values acceptable for enhanced performance)
Power - Peak Pulse: 1500W minimum (higher values acceptable)
Operating Temperature Range: -55°C to 150°C minimum (extended ranges acceptable)
Packaging Format: Tape & Reel, Bulk, or Cut Tape (all acceptable for surface mount assembly)

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical electrical specifications (46.3A peak pulse current, 1500W power rating) and active product status.

Enhanced Equivalents: Parts with superior electrical performance (higher peak pulse current and power ratings) while maintaining identical voltage specifications and package compatibility.

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
CD214C-T20CALF	Bourns Inc.	20V	32.4V	46.3A	1500W	-55°C to 150°C	DO-214AB, SMC	Obsolete
SMCJ20CA	Fairchild Semiconductor	20V	32.4V	46.3A	1500W	-55°C to 150°C	DO-214AB, SMC	Active
SMCJ20CA-HR	Littelfuse Inc.	20V	32.4V	46.3A	1500W	-65°C to 150°C	DO-214AB, SMC	Active
SMCJ20CA-HRA	Littelfuse Inc.	20V	32.4V	46.3A	1500W	-65°C to 150°C	DO-214AB, SMC	Active
SMCJ20CA-HRAT7	Littelfuse Inc.	20V	32.4V	46.3A	1500W	-65°C to 150°C	DO-214AB, SMC	Active
SMCJ20CA-TP	Micro Commercial Co	20V	32.4V	46.3A	1500W	-55°C to 175°C	DO-214AB, SMC	Active
SMDJ20CA	Alpha & Omega Semiconductor Inc.	20V	32.4V	92.6A	3000W	-55°C to 150°C	DO-214AB, SMC	Active
5.0SMDJ20CA	MDE Semiconductor Inc	20V	32.4V	155A	5000W	-55°C to 150°C	DO-214AB, SMC	Active
5.0SMDJ20CA-T7	Littelfuse Inc.	20V	32.4V	155A	5000W	-65°C to 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Direct Equivalent Selection (Identical Specifications):

For applications requiring exact electrical performance matching, select from active parts with 46.3A peak pulse current and 1500W power rating:

SMCJ20CA (Fairchild Semiconductor): Active status, standard operating temperature range, bulk packaging available
SMCJ20CA-HR, SMCJ20CA-HRA, SMCJ20CA-HRAT7 (Littelfuse Inc.): Active status, extended lower temperature rating (-65°C), high-reliability series designation
SMCJ20CA-TP (Micro Commercial Co): Active status, extended upper temperature rating to 175°C, cut tape packaging

All direct equivalents maintain ROHS3 compliance and identical voltage specifications (20V reverse standoff, 32.4V clamping).

Enhanced Performance Selection (Superior Ratings):

For applications where higher transient energy absorption is beneficial:

SMDJ20CA (Alpha & Omega Semiconductor Inc.): 92.6A peak pulse current, 3000W power rating, maintains identical voltage specifications
5.0SMDJ20CA (MDE Semiconductor Inc.): 155A peak pulse current, 5000W power rating, ROHS3 compliant
5.0SMDJ20CA-T7 (Littelfuse Inc.): 155A peak pulse current, 5000W power rating, extended lower temperature rating (-65°C)

Enhanced parts provide superior transient suppression capability while maintaining full voltage compatibility with the original CD214C-T20CALF specification.

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance. Littelfuse high-reliability variants (SMCJ20CA-HR series) and enhanced performance parts (5.0SMDJ20CA series) offer extended temperature ranges suitable for demanding industrial and telecom applications.

Frequently Asked Questions (FAQ)

Q: Can SMCJ20CA directly replace CD214C-T20CALF?

A: Yes. SMCJ20CA is a direct electrical equivalent with identical voltage specifications (20V reverse standoff, 32.4V clamping), peak pulse current (46.3A), power rating (1500W), and DO-214AB package. Both are bidirectional zener TVS diodes for surface mount assembly.

Q: What is the difference between direct equivalents and enhanced equivalents?

A: Direct equivalents (SMCJ20CA, SMCJ20CA-HR, SMCJ20CA-TP) match the original 46.3A peak pulse current and 1500W power rating. Enhanced equivalents (SMDJ20CA, 5.0SMDJ20CA series) provide higher peak pulse current (92.6A to 155A) and power ratings (3000W to 5000W) while maintaining identical voltage specifications. Enhanced parts offer superior transient energy absorption in the same package.

Q: Are packaging format differences significant?

A: No. Tape & Reel (TR), Bulk, and Cut Tape (CT) packaging formats are all compatible for surface mount assembly. The difference is in supply format and handling; electrical performance and package dimensions (DO-214AB, SMC) remain identical.

Q: Why do some substitutes have extended temperature ranges?

A: Extended temperature ranges (-65°C lower limit or 175°C upper limit) represent enhanced device specifications. Parts like SMCJ20CA-HR (-65°C to 150°C) and SMCJ20CA-TP (-55°C to 175°C) maintain full electrical compatibility while offering broader operational temperature coverage for specific application requirements.

Q: Is the Littelfuse high-reliability series (SMCJ20CA-HR) suitable for general-purpose applications?

A: Yes. The SMCJ20CA-HR series maintains identical electrical specifications to the original part and is rated for general-purpose applications. The high-reliability designation indicates enhanced manufacturing controls and extended temperature capability, making it suitable for both standard and demanding environments.

Q: Can enhanced performance parts (5.0SMDJ20CA) be used in place of the original CD214C-T20CALF?

A: Yes. Enhanced parts maintain identical voltage specifications (20V reverse standoff, 32.4V clamping) and package compatibility (DO-214AB, SMC). The higher peak pulse current (155A) and power rating (5000W) provide superior transient suppression without affecting circuit compatibility. No design changes are required.

Q: What compliance certifications apply to substitute parts?

A: All listed substitute parts maintain ROHS3 compliance. Enhanced performance parts from Littelfuse (5.0SMDJ20CA-T7) and MDE Semiconductor (5.0SMDJ20CA) are ROHS3 compliant. Fairchild and Littelfuse standard variants are also ROHS3 compliant. Verify specific REACH status requirements for your application region.

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