CD214L-T12CALF Equivalent & Substitute Parts

Part Overview

The CD214L-T12CALF 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 12V reverse standoff voltage with a 19.9V clamping voltage and 150.6A peak pulse current capability in a DO-214AB (SMC) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and field replacement requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214L-T12CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	12V
Voltage - Breakdown (Min)	13.3V
Voltage - Clamping (Max) @ Ipp	19.9V
Current - Peak Pulse (10/1000µs)	150.6A
Power - Peak Pulse	3000W (3kW)
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 eligibility for the CD214L-T12CALF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - Reverse Standoff (Typ): 12V
Voltage - Breakdown (Min): 13.3V
Voltage - Clamping (Max) @ Ipp: 19.9V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): Substitute parts may equal or exceed 150.6A
Power - Peak Pulse: Substitute parts may equal or exceed 3000W
Operating Temperature: Substitute parts must encompass or exceed the -55°C ~ 150°C range
Product Status: Active substitutes are preferred over obsolete parts

Substitute parts are grouped into two categories: direct equivalents (matching all electrical specifications including peak pulse current and power dissipation) and similar alternatives (matching voltage parameters with enhanced current/power ratings).

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Package	Product Status
CD214L-T12CALF	Bourns Inc.	12V	13.3V	19.9V	150.6A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Obsolete
SMLJ12CA	Bourns Inc.	12V	13.3V	19.9V	150.6A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
5.0SMDJ12CA	MDE Semiconductor Inc	12V	13.3V	19.9V	252A	5000W	-55°C ~ 150°C	DO-214AB, SMC	Active
5.0SMDJ12CA-T7	Littelfuse	12V	13.3V	19.9V	252A	5000W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ12CA	Meritek	12V	13.3V	19.9V	75.38A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ12CA	Alpha & Omega Semiconductor Inc.	12V	13.3V	19.9V	150.8A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ12CA-HRA	Littelfuse Inc.	12V	13.3V	19.9V	150.8A	3000W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMDJ12CA-HRAT7	Littelfuse Inc.	12V	13.3V	19.9V	150.8A	3000W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMDJ12CA-T7	Littelfuse Inc.	12V	13.3V	19.9V	150.8A	3000W	-65°C ~ 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred for Drop-In Replacement):

SMLJ12CA (Bourns Inc.) is the primary direct equivalent. This part maintains identical electrical specifications (150.6A peak pulse current, 3000W power dissipation) and operating temperature range (-55°C ~ 150°C) as the CD214L-T12CALF. Both parts are ROHS3 compliant and carry identical voltage ratings. The SMLJ12CA is active in production with 6028 units in stock, providing supply continuity.

Electrical Equivalents with Enhanced Ratings:

SMDJ12CA (Alpha & Omega Semiconductor Inc.), SMDJ12CA-HRA (Littelfuse Inc.), SMDJ12CA-HRAT7 (Littelfuse Inc.), and SMDJ12CA-T7 (Littelfuse Inc.) all provide equivalent voltage performance with marginally higher peak pulse current (150.8A) and identical power dissipation (3000W). These parts are ROHS3 compliant and active in production. The Littelfuse variants extend the operating temperature range to -65°C ~ 150°C, providing enhanced thermal margin.

Enhanced Performance Alternatives:

5.0SMDJ12CA (MDE Semiconductor Inc.) and 5.0SMDJ12CA-T7 (Littelfuse) offer doubled peak pulse current (252A) and power dissipation (5000W) while maintaining all voltage specifications. These parts are suitable for applications requiring higher transient energy absorption. Both are ROHS3 compliant and active in production.

Lower Performance Alternative:

SMCJ12CA (Meritek) maintains voltage equivalence but provides reduced peak pulse current (75.38A) and power dissipation (1500W). This part is suitable only for applications with lower transient energy requirements and is not recommended as a general replacement for the CD214L-T12CALF.

Frequently Asked Questions (FAQ)

Q: Can SMLJ12CA directly replace CD214L-T12CALF without circuit modification?

A: Yes. SMLJ12CA is a direct electrical and mechanical equivalent with identical voltage ratings (12V reverse standoff, 19.9V clamping), peak pulse current (150.6A), power dissipation (3000W), and operating temperature range (-55°C ~ 150°C). Both use DO-214AB (SMC) surface-mount packaging. No circuit changes are required.

Q: What is the difference between SMDJ12CA and SMLJ12CA?

A: Both parts share identical voltage specifications and power ratings (3000W). SMDJ12CA variants are offered by multiple manufacturers (Alpha & Omega, Littelfuse) with peak pulse current of 150.8A, marginally higher than SMLJ12CA's 150.6A. Littelfuse SMDJ12CA variants extend the operating temperature range to -65°C ~ 150°C. Selection depends on manufacturer preference and thermal requirements.

Q: When should 5.0SMDJ12CA be used instead of SMLJ12CA?

A: 5.0SMDJ12CA is selected when the application requires higher transient energy absorption. This part doubles both peak pulse current (252A) and power dissipation (5000W) compared to SMLJ12CA while maintaining identical voltage specifications. Use this part only if circuit analysis confirms the need for enhanced transient protection.

Q: Is SMCJ12CA (Meritek) a suitable replacement?

A: SMCJ12CA maintains voltage equivalence but provides only 75.38A peak pulse current and 1500W power dissipation—half the CD214L-T12CALF rating. This part is suitable only for applications with lower transient energy requirements. For general replacement, SMLJ12CA or SMDJ12CA variants are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the CD214L-T12CALF.

Q: What is the operating temperature difference between Bourns and Littelfuse variants?

A: Bourns SMLJ12CA operates from -55°C ~ 150°C. Littelfuse SMDJ12CA-HRA, SMDJ12CA-HRAT7, and SMDJ12CA-T7 extend the lower temperature limit to -65°C ~ 150°C, providing 10°C additional cold-temperature margin. Select Littelfuse variants if the application requires operation below -55°C.

Q: Can packaging type (Tape & Reel vs. bulk) affect electrical performance?

A: No. Packaging format (Tape & Reel or bulk) does not affect electrical performance. Selection is based on manufacturing and assembly requirements. All listed parts in Tape & Reel format are electrically identical to their bulk-packaged equivalents.

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