CD214C-T45CALF Equivalent & Substitute Parts

Part Overview

The CD214C-T45CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated for 45V reverse standoff with 72.7V clamping voltage and 20.6A peak pulse current in a surface mount SMC (DO-214AB) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214C-T45CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	45V
Voltage - Breakdown (Min)	50V
Voltage - Clamping (Max) @ Ipp	72.7V
Current - Peak Pulse (10/1000µs)	20.6A
Power - Peak Pulse	1500W
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 for the CD214C-T45CALF is determined by the following critical parameters:

Voltage - Reverse Standoff: 45V (required match)
Voltage - Clamping (Max) @ Ipp: 72.7V (required match)
Current - Peak Pulse (10/1000µs): 20.6A minimum (equal or higher acceptable)
Package / Case: DO-214AB, SMC (required match)
Mounting Type: Surface Mount (required match)
Type: Zener, Bidirectional (required match)

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical electrical specifications (45V standoff, 72.7V clamp, 20.6A peak pulse, 1500W power rating) in active production status.

Higher-Performance Alternatives: Parts with identical voltage ratings but higher peak pulse current (68.8A or 41.3A) and correspondingly higher power dissipation (5000W or 3000W), suitable for applications requiring enhanced transient protection margin.

Parameter Comparison

Part Number	Manufacturer	Status	Standoff (V)	Clamp (V)	Ipp (A)	Power (W)	Temp Range (°C)	Package
CD214C-T45CALF	Bourns Inc.	Obsolete	45	72.7	20.6	1500	-55 ~ 150	DO-214AB
SMCJ45CA	MDD	Active	45	72.7	20.6	1500	-50 ~ 150	DO-214AB
SMCJ45CA-HR	Littelfuse Inc.	Active	45	72.7	20.6	1500	-65 ~ 150	DO-214AB
SMCJ45CA-HRA	Littelfuse Inc.	Active	45	72.7	20.6	1500	-65 ~ 150	DO-214AB
SMCJ45CA-HRAT7	Littelfuse Inc.	Active	45	72.7	20.6	1500	-65 ~ 150	DO-214AB
SMCJ45CA-TP	Micro Commercial Co	Active	45	72.7	20.6	1500	-55 ~ 175	DO-214AB
5.0SMDJ45CA	MDE Semiconductor Inc	Active	45	72.7	68.8	5000	-55 ~ 150	DO-214AB
5.0SMDJ45CA-T7	Littelfuse Inc.	Active	45	72.7	68.8	5000	-65 ~ 150	DO-214AB
SMDJ45CA	Alpha & Omega Semiconductor Inc.	Active	45	72.7	41.3	3000	-55 ~ 150	DO-214AB

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

SMCJ45CA (MDD), SMCJ45CA-HR (Littelfuse), SMCJ45CA-HRA (Littelfuse), SMCJ45CA-HRAT7 (Littelfuse), and SMCJ45CA-TP (Micro Commercial Co) are all active production parts with matching electrical and mechanical specifications. All are ROHS3 compliant and suitable for direct substitution. SMCJ45CA-TP offers the widest operating temperature range (-55°C to 175°C), providing additional thermal margin in extreme environments.

For Enhanced Protection (Higher Peak Pulse Current):

5.0SMDJ45CA (MDE Semiconductor Inc.) and 5.0SMDJ45CA-T7 (Littelfuse Inc.) provide 68.8A peak pulse current with 5000W power dissipation, compared to the original 20.6A and 1500W. SMDJ45CA (Alpha & Omega Semiconductor Inc.) provides 41.3A peak pulse current with 3000W power dissipation. These alternatives maintain identical voltage ratings and package form factor while offering increased transient suppression capability. Selection depends on circuit protection requirements and available board space for thermal management.

Frequently Asked Questions (FAQ)

Q: Can SMCJ45CA directly replace CD214C-T45CALF?

A: Yes. SMCJ45CA matches all critical electrical parameters: 45V reverse standoff, 72.7V clamping voltage, 20.6A peak pulse current, and 1500W power rating. Both use DO-214AB (SMC) surface mount packaging. The part is in active production status.

Q: What is the difference between SMCJ45CA and 5.0SMDJ45CA?

A: Both maintain identical voltage ratings (45V standoff, 72.7V clamp). The 5.0SMDJ45CA variant provides higher peak pulse current (68.8A versus 20.6A) and higher power dissipation (5000W versus 1500W). Selection depends on whether the application requires enhanced transient protection margin.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original CD214C-T45CALF.

Q: Does operating temperature range affect substitution suitability?

A: Operating temperature range does not prevent substitution. The original part operates -55°C to 150°C. Substitute parts operate within -50°C to 175°C ranges. Selection should confirm the substitute part's temperature range meets or exceeds the application requirement.

Q: Can I use SMDJ45CA as a substitute?

A: Yes. SMDJ45CA maintains the required 45V standoff and 72.7V clamping voltage in DO-214AB packaging. It provides 41.3A peak pulse current and 3000W power dissipation, offering enhanced protection compared to the original 20.6A and 1500W specification.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use DO-214AB (SMC) surface mount packaging, identical to the original CD214C-T45CALF. No PCB layout or footprint modifications are required for direct substitution.

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