CD214L-T10ALF Equivalent & Substitute Parts

Part Overview

The CD214L-T10ALF is a 10V unidirectional transient voltage suppressor (TVS) diode manufactured by Bourns Inc. in the DO-214AB (SMC) surface mount package. This component is rated for 176.4A peak pulse current and 3000W peak pulse power, designed for general-purpose transient voltage suppression applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	10V
Voltage - Breakdown (Min)	11.1V
Voltage - Clamping (Max) @ Ipp	17V
Current - Peak Pulse (10/1000µs)	176.4A
Power - Peak Pulse	3000W
Operating Temperature	-55°C ~ 150°C (TJ)
Package / Case	DO-214AB, SMC
Type	Zener
Unidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CD214L-T10ALF is determined by strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

Voltage - Reverse Standoff: 10V
Voltage - Clamping (Max) @ Ipp: 17V
Package / Case: DO-214AB (SMC)
Type: Zener, Unidirectional
Current - Peak Pulse (10/1000µs): 176.4A minimum
Power - Peak Pulse: 3000W minimum

Substitute parts are grouped into two categories:

Direct Equivalents (Full Parameter Match): Parts with identical electrical specifications including 176.4A peak pulse current and 3000W power rating. These provide complete functional replacement without design modification.

Functional Equivalents (Reduced Current Rating): Parts with matching voltage parameters but reduced peak pulse current (88.24A to 88.3A) and power rating (1500W). These are suitable only for applications where the lower current and power ratings are acceptable within the circuit design.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
CD214L-T10ALF	Bourns Inc.	10V	17V	176.4A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Obsolete
SMLJ10A	Bourns Inc.	10V	17V	176.4A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ10A	Alpha & Omega Semiconductor Inc.	10V	17V	176.5A	3000W	-55°C ~ 150°C	DO-214AB, SMC	Active
SMDJ10A-HR	Littelfuse Inc.	10V	17V	176.5A	3000W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMDJ10A-HRA	Littelfuse Inc.	10V	17V	176.5A	3000W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ10A-TP	Micro Commercial Co	10V	17V	88.3A	1500W	-55°C ~ 175°C	DO-214AB, SMC	Active
SMCJ10A-HR	Littelfuse Inc.	10V	17V	88.3A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ10A-HRA	Littelfuse Inc.	10V	17V	88.3A	1500W	-65°C ~ 150°C	DO-214AB, SMC	Active
SMCJ10A	Meritek	10V	17V	88.24A	1500W	-55°C ~ 150°C	DO-214AB, SMC	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

SMLJ10A (Bourns Inc.) is the recommended primary substitute. Manufactured by the same original supplier, it provides identical electrical specifications (176.4A peak pulse, 3000W power) and maintains the same operating temperature range. Product status is active with substantial inventory availability.

SMDJ10A (Alpha & Omega Semiconductor Inc.) and SMDJ10A-HR / SMDJ10A-HRA (Littelfuse Inc.) are functionally equivalent alternatives with peak pulse current of 176.5A and 3000W power rating. The Littelfuse variants extend the lower operating temperature limit to -65°C. All three maintain active product status.

Secondary Substitutes (Reduced Current Rating):

SMCJ10A-TP (Micro Commercial Co), SMCJ10A-HR and SMCJ10A-HRA (Littelfuse Inc.), and SMCJ10A (Meritek) are suitable only for applications where peak pulse current requirements do not exceed 88.3A and power dissipation does not exceed 1500W. These parts maintain identical voltage parameters and package specifications. All are active products with available inventory.

Compliance Considerations:

All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile. REACH status varies: Bourns SMLJ10A and Alpha & Omega SMDJ10A are REACH Unaffected, while Littelfuse and Meritek variants are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can SMCJ10A-TP be used as a direct replacement for CD214L-T10ALF?

A: SMCJ10A-TP is a functional equivalent only for applications where peak pulse current does not exceed 88.3A and power dissipation does not exceed 1500W. The original CD214L-T10ALF is rated for 176.4A and 3000W. Circuit analysis is required to determine if the reduced ratings are acceptable.

Q: What is the difference between SMDJ10A-HR and SMDJ10A-HRA?

A: Both parts are manufactured by Littelfuse Inc. with identical electrical specifications (176.5A peak pulse, 3000W power, 10V standoff, 17V clamping). The difference is in product series designation (SMDJ-HR vs. SMDJ-HRA). Both are suitable direct replacements for CD214L-T10ALF.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the DO-214AB (SMC) surface mount package, matching the original CD214L-T10ALF. Packaging format (Tape & Reel vs. bulk) varies by manufacturer and supplier, but the component package remains consistent.

Q: Why is SMLJ10A recommended as the primary substitute?

A: SMLJ10A is manufactured by Bourns Inc., the original supplier of CD214L-T10ALF. It provides identical electrical specifications and maintains the same operating temperature range (-55°C ~ 150°C). Active product status and substantial inventory (12,328 pcs) ensure long-term availability.

Q: Can I use parts with different operating temperature ranges?

A: Operating temperature range substitution depends on your application requirements. SMDJ10A-HR, SMDJ10A-HRA, SMCJ10A-HR, and SMCJ10A-HRA extend the lower temperature limit to -65°C. SMCJ10A-TP extends the upper limit to 175°C. Select based on your circuit's thermal operating envelope.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. REACH compliance status varies by manufacturer; verify specific requirements for your supply chain.

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