Equivalent & Substitute Parts for CD214A-T10CALF

Part Overview

The CD214A-T10CALF 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 10V reverse standoff voltage, 17V maximum clamping voltage, and 24.6A peak pulse current capability in a DO-214AC (SMA) package. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	10	V
Voltage - Breakdown (Min)	11.1	V
Voltage - Clamping (Max) @ Ipp	17	V
Current - Peak Pulse (10/1000µs)	24.6	A
Power - Peak Pulse	400	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AC, SMA	—
Type	Zener	—
Bidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the CD214A-T10CALF is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 10V (exact match required)
Voltage - Clamping (Max) @ Ipp: 17V (exact match required for direct equivalents)
Current - Peak Pulse (10/1000µs): 24.6A minimum (equal or greater acceptable)
Power - Peak Pulse: 400W minimum (equal or greater acceptable)
Package / Case: DO-214AC, SMA (exact match required)
Type: Zener, Bidirectional (exact match required)
RoHS Status: ROHS3 Compliant (compliance maintained)

Substitute parts are categorized as follows:

Direct Equivalents meet all critical parameters identically and are pin-compatible replacements.

Similar Substitutes maintain the same reverse standoff voltage (10V) and package (DO-214AC/SMA) but may differ in clamping voltage, peak pulse current, or power dissipation. These parts are functionally compatible for applications where the higher performance parameters do not create design conflicts.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Product Status	Package
CD214A-T10CALF	Bourns Inc.	10V	11.1V	17V	24.6A	400W	-55 to 150°C	Obsolete	DO-214AC (SMA)
SMAJ10CA	MDD	10V	11V	17V	24.6A	400W	-50 to 150°C	Active	DO-214AC (SMA)
SM4T12CAY	STMicroelectronics	10V	11.1V	21.7V	106A (8/20µs)	400W	-55 to 150°C	Active	DO-214AC (SMA)
SMA6J10CA-TP	Micro Commercial Co	10V	11.1V	17V	35.3A	600W	-55 to 175°C	Active	DO-214AC (SMA)
SMA6J10CA-TR	STMicroelectronics	10V	11.1V	19.6V	184A (8/20µs)	600W	-55 to 175°C	Active	DO-214AC (SMA)
SMAJ10CA-TP	Micro Commercial Co	10V	11.1V	17V	24.6A	400W	-55 to 175°C	Active	DO-214AC (SMA)
SMAJ10CA-TR	STMicroelectronics	10V	11.1V	21.7V	106A (8/20µs)	400W	-55 to 150°C	Active	DO-214AC (SMA)

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Replacement):

SMAJ10CA (MDD) and SMAJ10CA-TP (Micro Commercial Co) are direct functional equivalents to the CD214A-T10CALF. Both maintain identical electrical specifications (10V reverse standoff, 17V clamping, 24.6A peak pulse current, 400W power dissipation) and DO-214AC packaging. Both parts are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability. SMAJ10CA-TP offers an extended operating temperature range (-55 to 175°C) compared to the original part (-55 to 150°C), providing additional thermal margin for demanding applications.

Higher Performance Alternatives:

SMA6J10CA-TP (Micro Commercial Co) and SMA6J10CA-TR (STMicroelectronics) maintain the 10V reverse standoff voltage and DO-214AC package but provide enhanced current handling (35.3A and 184A respectively) and increased power dissipation (600W). These parts are suitable for applications requiring greater transient energy absorption. SMA6J10CA-TR includes automotive-grade qualification (AEC-Q101) and extended temperature range (-55 to 175°C).

SM4T12CAY (STMicroelectronics) and SMAJ10CA-TR (STMicroelectronics) offer higher clamping voltages (21.7V) with significantly increased peak pulse current (106A) and maintain 400W power dissipation. These parts are appropriate for circuits where higher clamping voltage is acceptable and enhanced surge protection is required.

All substitute parts maintain ROHS3 compliance and are available in active production status.

Frequently Asked Questions (FAQ)

Q: Can SMAJ10CA directly replace CD214A-T10CALF without circuit modification?

A: Yes. SMAJ10CA matches all critical electrical parameters (10V reverse standoff, 17V clamping voltage, 24.6A peak pulse current) and uses identical DO-214AC packaging. No circuit redesign is required for direct substitution.

Q: What is the difference between SMAJ10CA-TP and SMAJ10CA-TR?

A: Both are SMAJ10CA variants from different manufacturers. SMAJ10CA-TP (Micro Commercial Co) is supplied in Tape & Reel packaging with an extended operating temperature range (-55 to 175°C). SMAJ10CA-TR (STMicroelectronics) is also Tape & Reel packaged but features a higher clamping voltage (21.7V) and significantly higher peak pulse current (106A at 8/20µs pulse width). Selection depends on packaging requirements and circuit protection specifications.

Q: Why would I select SMA6J10CA-TP over SMAJ10CA-TP if both have 17V clamping voltage?

A: SMA6J10CA-TP provides higher peak pulse current capability (35.3A versus 24.6A) and increased power dissipation (600W versus 400W). Selection depends on the magnitude and frequency of transient events in the application. Higher current and power ratings provide greater margin for protection of sensitive downstream components.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements equivalent to the original CD214A-T10CALF.

Q: What is the significance of the 8/20µs pulse width specification on some parts?

A: The 8/20µs pulse width is an alternative test standard for peak pulse current measurement, commonly used in automotive and industrial applications. Parts specified with 8/20µs pulses (such as SM4T12CAY and SMAJ10CA-TR) may exhibit different current ratings under this test condition compared to the standard 10/1000µs specification. Verify that the applicable pulse width matches your circuit's transient profile.

Q: Can I use SM4T12CAY or SMAJ10CA-TR with their higher clamping voltages in a circuit designed for 17V clamping?

A: Higher clamping voltage (21.7V) means the protected circuit will experience higher voltage stress during transient events. This is acceptable only if downstream components are rated for the higher voltage. Verify component voltage ratings before substitution.

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