CD214A-T13ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T13ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 13V reverse standoff voltage, 21.5V maximum clamping voltage, and 18.6A peak pulse current capability in a DO-214AC (SMA) package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	13	V
Voltage - Breakdown (Min)	14.4	V
Voltage - Clamping (Max) @ Ipp	21.5	V
Current - Peak Pulse (10/1000µs)	18.6	A
Power - Peak Pulse	400	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD214A-T13ALF is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 13V nominal
Voltage - Clamping (Max) @ Ipp: 21.5V maximum
Current - Peak Pulse (10/1000µs): 18.6A minimum
Package / Case: DO-214AC (SMA) surface mount
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are classified into two categories:

Direct Equivalents maintain identical electrical specifications and are pin-for-pin compatible with the original part.

Similar Alternatives provide comparable voltage and current protection characteristics within acceptable engineering tolerances but may exhibit minor variations in clamping voltage or peak pulse current ratings. These parts are suitable for applications where the exact specifications are not critical to circuit performance.

Parameter Comparison

Part Number	Manufacturer	VWM (Typ) V	Breakdown (Min) V	Clamp (Max) V	Ipp (10/1000µs) A	Power W	Temp Range °C	Status
CD214A-T13ALF	Bourns Inc.	13	14.4	21.5	18.6	400	-55 to 150	Obsolete
SMAJ13A	MDD	13	14.4	21.5	18.6	400	-50 to 150	Active
P4SMA15A-M3/5A	Vishay	12.8	14.3	21.2	18.9	400	-65 to 150	Active
P4SMA15A-M3/61	Vishay	12.8	14.3	21.2	18.9	400	-65 to 150	Active
P4SMA16A-M3/5A	Vishay	13.6	15.2	22.5	17.8	400	-65 to 150	Active
P4SMA16A-M3/61	Vishay	13.6	15.2	22.5	17.8	400	-65 to 150	Active
SM4T15AY	STMicroelectronics	13	14.4	27.2	85 (8/20µs)	400	-55 to 150	Active
SMA6J12A-M3/5A	Vishay	12	13.3	18.8	31.9	600	-55 to 150	Active
SMA6J12A-M3/61	Vishay	12	13.3	18.8	31.9	600	-55 to 150	Active
SMA6J13A-E3/5A	Vishay	13	14.4	23.9	147 (8/20µs)	4000	-55 to 150	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Choice):

SMAJ13A (MDD) is the direct electrical equivalent to CD214A-T13ALF. It maintains identical reverse standoff voltage (13V), breakdown voltage (14.4V), clamping voltage (21.5V), and peak pulse current (18.6A) specifications. The part is currently in active production status with substantial inventory availability (40,200 pcs). Operating temperature range is -50°C to 150°C, which covers the majority of industrial applications. RoHS3 compliance and MSL 1 rating match the original part requirements.

Similar Alternatives (Secondary Choices):

P4SMA15A variants (Vishay) provide comparable protection with marginally lower standoff voltage (12.8V) and clamping voltage (21.2V), with slightly higher peak pulse current (18.9A). These parts offer extended operating temperature range (-65°C to 150°C) and are suitable for applications where the voltage tolerance is acceptable.

P4SMA16A variants (Vishay) feature higher standoff voltage (13.6V) and clamping voltage (22.5V) with slightly reduced peak pulse current (17.8A). These are appropriate for circuits requiring higher voltage margins.

SM4T15AY (STMicroelectronics) matches the reverse standoff voltage (13V) and clamping voltage (27.2V) but exhibits significantly higher peak pulse current capability (85A at 8/20µs pulse). This part includes AEC-Q101 automotive qualification and is suitable for high-energy transient protection applications.

SMA6J13A-E3/5A (Vishay) maintains identical voltage specifications (13V standoff, 14.4V breakdown, 23.9V clamp) but provides substantially higher peak pulse current (147A at 8/20µs) and power dissipation (4000W). This part is appropriate for applications requiring enhanced surge protection capability.

All recommended substitutes are RoHS3 compliant, MSL 1 rated, and available in DO-214AC (SMA) surface-mount packaging.

Frequently Asked Questions (FAQ)

Q: Can SMAJ13A be used as a direct replacement for CD214A-T13ALF?

A: Yes. SMAJ13A is a direct electrical equivalent with identical voltage and current specifications. The only difference is the minimum operating temperature (-50°C vs -55°C), which is acceptable for most applications. Both parts are RoHS3 compliant and use the same DO-214AC (SMA) package.

Q: What is the difference between direct equivalents and similar alternatives?

A: Direct equivalents (SMAJ13A) maintain all electrical specifications within the original part's parameters. Similar alternatives (P4SMA15A, P4SMA16A, SM4T15AY, SMA6J13A-E3/5A) provide comparable overvoltage protection but with variations in clamping voltage, peak pulse current, or power dissipation. Selection depends on circuit requirements and tolerance margins.

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

A: Yes. All listed substitute parts use the DO-214AC (SMA) surface-mount package, ensuring mechanical and electrical compatibility with the original PCB layout.

Q: Which substitute should I choose if my circuit requires higher surge protection?

A: SMA6J13A-E3/5A provides the highest peak pulse current (147A) and power dissipation (4000W) while maintaining the same 13V standoff voltage. SM4T15AY offers 85A peak pulse current with automotive-grade qualification (AEC-Q101).

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL 1 (unlimited moisture sensitivity) ratings, matching the original part's environmental and regulatory requirements.

Q: What is the impact of operating temperature range differences?

A: SMAJ13A operates from -50°C to 150°C versus the original -55°C to 150°C. This 5°C difference at the lower limit is negligible for most industrial and commercial applications. Vishay alternatives extend the lower limit to -65°C, providing additional margin for extreme environment applications.

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