CD214C-T150ALF Equivalent & Substitute Parts

Part Overview

The CD214C-T150ALF 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 150V reverse standoff voltage with a 243V maximum clamping voltage and 6.2A peak pulse current capability. The component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	150V
Voltage - Breakdown (Min)	167V
Voltage - Clamping (Max) @ Ipp	243V
Current - Peak Pulse (10/1000µs)	6.2A
Power - Peak Pulse	1500W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution for the CD214C-T150ALF is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 150V (exact match required)
Voltage - Breakdown (Min): 167V (exact match required)
Voltage - Clamping (Max) @ Ipp: 243V (exact match required)
Package / Case: DO-214AB, SMC (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Zener, Unidirectional (exact match required)

Secondary Consideration:

Current - Peak Pulse (10/1000µs): Parts with equal or greater current rating are acceptable
Power - Peak Pulse: Parts with equal or greater power rating are acceptable
Operating Temperature Range: Parts with equal or wider range are acceptable

Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical electrical specifications (6.2A peak pulse current, 1500W power rating).

Higher-Rated Alternatives: Parts with superior current and power ratings (12.4A to 20.6A peak pulse current, 3000W to 5000W power rating) that maintain all voltage parameters and package specifications.

Parameter Comparison

Part Number	Manufacturer	VWM (Typ)	VBR (Min)	VC (Max)	Ipp (A)	Power (W)	Package	Temp Range	Status
CD214C-T150ALF	Bourns Inc.	150V	167V	243V	6.2	1500	DO-214AB	-55 to 150°C	Obsolete
SMCJ150A	Fairchild Semiconductor	150V	167V	243V	6.2	1500	DO-214AB	-55 to 150°C	Active
5.0SMDJ150A	MDE Semiconductor Inc	150V	167V	243V	20.6	5000	DO-214AB	-55 to 150°C	Active
5.0SMDJ150A-T7	Littelfuse	150V	167V	243V	20.6	5000	DO-214AB	-65 to 150°C	Active
SMCJ150A-HR	Littelfuse Inc.	150V	167V	243V	6.2	1500	DO-214AB	-65 to 150°C	Active
SMCJ150A-HRA	Littelfuse Inc.	150V	167V	243V	6.2	1500	DO-214AB	-65 to 150°C	Active
SMCJ150A-HRAT7	Littelfuse Inc.	150V	167V	243V	6.2	1500	DO-214AB	-65 to 150°C	Active
SMCJ150A-TP	Micro Commercial Co	150V	167V	243V	6.2	1500	DO-214AB	-55 to 175°C	Active
SMDJ150A	Alpha & Omega Semiconductor Inc.	150V	167V	243V	12.4	3000	DO-214AB	-55 to 150°C	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended for Pin-for-Pin Replacement):

SMCJ150A (Fairchild Semiconductor) and SMCJ150A-TP (Micro Commercial Co) provide identical electrical specifications to the CD214C-T150ALF with active product status. Both are ROHS3 compliant and maintain the same 6.2A peak pulse current and 1500W power rating. SMCJ150A-TP offers an extended operating temperature range to 175°C, providing additional thermal margin.

Higher-Rated Alternatives (For Enhanced Transient Protection):

SMDJ150A (Alpha & Omega Semiconductor Inc.) doubles the peak pulse current to 12.4A and power rating to 3000W while maintaining all voltage specifications and DO-214AB packaging. This part is suitable for applications requiring greater transient energy absorption.

5.0SMDJ150A and 5.0SMDJ150A-T7 (MDE Semiconductor Inc. and Littelfuse) provide the highest current and power ratings at 20.6A and 5000W respectively. These parts are appropriate for high-energy transient environments. The 5.0SMDJ150A-T7 variant extends the lower operating temperature limit to -65°C.

Extended Temperature Range Options:

SMCJ150A-HR, SMCJ150A-HRA, and SMCJ150A-HRAT7 (all Littelfuse Inc.) maintain the 6.2A/1500W specifications while extending the lower operating temperature to -65°C, suitable for applications requiring enhanced cold-temperature performance.

All substitute parts listed are ROHS3 compliant and maintain the same unidirectional Zener diode topology and DO-214AB surface mount package as the original component.

Frequently Asked Questions (FAQ)

Q: Can SMCJ150A directly replace CD214C-T150ALF?

A: Yes. SMCJ150A matches all critical electrical parameters: 150V reverse standoff, 167V minimum breakdown, 243V maximum clamping voltage, 6.2A peak pulse current, and 1500W power rating. Both use DO-214AB packaging for surface mount applications. The part is active and ROHS3 compliant.

Q: What is the difference between 6.2A and 20.6A rated parts?

A: The 6.2A parts (SMCJ150A series, SMCJ150A-TP) are direct equivalents with 1500W peak pulse power. The 20.6A parts (5.0SMDJ150A series) provide higher transient energy absorption at 5000W peak pulse power. Both maintain identical voltage specifications and DO-214AB packaging. Selection depends on the transient energy levels in the application.

Q: Are there temperature range differences between substitutes?

A: Yes. The CD214C-T150ALF operates from -55°C to 150°C. Littelfuse variants (SMCJ150A-HR, SMCJ150A-HRA, SMCJ150A-HRAT7) extend the lower limit to -65°C. SMCJ150A-TP extends the upper limit to 175°C. These extended ranges provide additional design margin for temperature-sensitive applications.

Q: Do all substitutes use the same DO-214AB package?

A: Yes. All substitute parts listed use DO-214AB (SMC) surface mount packaging, ensuring mechanical and thermal compatibility with the original CD214C-T150ALF footprint.

Q: Which substitute offers the best general-purpose replacement?

A: SMCJ150A (Fairchild Semiconductor) or SMCJ150A-TP (Micro Commercial Co) are direct electrical equivalents with active product status and full ROHS3 compliance. SMCJ150A-TP is preferred if extended upper temperature operation to 175°C is beneficial.

Q: Are higher-rated parts (12.4A, 20.6A) backward compatible?

A: Yes. Parts with higher current and power ratings maintain all voltage specifications and package compatibility. They provide enhanced transient protection without affecting circuit operation. Selection should be based on actual transient energy requirements in the application.

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