CD214A-T15CALF Equivalent & Substitute Parts

Part Overview

The CD214A-T15CALF 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 15V reverse standoff voltage with 24.4V clamping capability and 16.4A peak pulse current handling. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and production requirements. Substitute parts must maintain electrical equivalence across voltage ratings, clamping characteristics, and current handling specifications while meeting the same packaging and compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	15V	V
Voltage - Breakdown (Min)	16.7V	V
Voltage - Clamping (Max) @ Ipp	24.4V	V
Current - Peak Pulse (10/1000µs)	16.4A	A
Power - Peak Pulse	400W	W
Package / Case	DO-214AC, SMA	—
Operating Temperature Range	-55°C ~ 150°C	°C (TJ)
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the CD214A-T15CALF is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 15V
Voltage - Breakdown (Min): 16.7V
Voltage - Clamping (Max) @ Ipp: 24.4V
Current - Peak Pulse (10/1000µs): 16.4A
Power - Peak Pulse: 400W
Package / Case: DO-214AC, SMA
Type: Zener, Bidirectional, 1 Channel

Direct Equivalents maintain all electrical parameters identically and differ only in manufacturer, product status (active vs. obsolete), or packaging format (cut tape vs. tape & reel).

Similar Substitutes share the same reverse standoff voltage (15V) and package (DO-214AC, SMA) but exhibit variations in clamping voltage and/or peak pulse current. These parts are suitable only when circuit design tolerances permit the specified parameter deviations.

Parameter Comparison

Part Number	Manufacturer	VWM (Typ)	V(BR) (Min)	VC (Max) @ Ipp	Ipp (10/1000µs)	Power (Peak)	Temp Range	Status
CD214A-T15CALF	Bourns Inc.	15V	16.7V	24.4V	16.4A	400W	-55°C ~ 150°C	Obsolete
SMAJ15CA	EVVO Semi	15V	16.7V	24.4V	16.4A	400W	-65°C ~ 150°C	Active
SMAJ15CA-TP	Micro Commercial Co	15V	16.7V	24.4V	16.4A	400W	-55°C ~ 175°C	Active
SZ1SMA15CAT3G	Littelfuse Inc.	15V	16.7V	24.4V	16.4A	400W	-65°C ~ 150°C	Active
TV04A150JB-HF	Comchip Technology	15V	16.7V	24.4V	16.39A	400W	-55°C ~ 150°C	Active
SM4T18CAY	STMicroelectronics	15V	16.7V	32.5V	71A (8/20µs)	400W	-55°C ~ 150°C	Active
SMA6J15CA-TR	STMicroelectronics	15V	16.7V	27.7V	123A (8/20µs)	600W	-55°C ~ 175°C	Active
SMAJ15CA-TR	STMicroelectronics	15V	16.7V	32.5V	71A (8/20µs)	400W	-55°C ~ 150°C	Active
SMAJ16CA-M3/61	Vishay General Semiconductor	16V	17.8V	26V	15.4A	400W	-55°C ~ 150°C	Active
SMAJ18CA-M3/61	Vishay General Semiconductor	18V	20V	29.2V	13.7A	400W	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

SMAJ15CA (EVVO Semi), SMAJ15CA-TP (Micro Commercial Co), SZ1SMA15CAT3G (Littelfuse Inc.), and TV04A150JB-HF (Comchip Technology) are direct electrical equivalents with identical voltage ratings, clamping characteristics, and current handling. All are active products with ROHS3 compliance and MSL 1 rating. Selection among these should prioritize availability, lead time, and packaging format (cut tape vs. tape & reel). SZ1SMA15CAT3G carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability.

Similar Substitutes (Application-Dependent):

SM4T18CAY, SMA6J15CA-TR, and SMAJ15CA-TR maintain the 15V reverse standoff voltage and DO-214AC package but exhibit higher clamping voltages (32.5V and 27.7V respectively) and significantly higher peak pulse currents (71A and 123A). These parts are suitable only when circuit design permits the elevated clamping voltage and when the additional current handling capacity provides system benefit. SMAJ16CA-M3/61 and SMAJ18CA-M3/61 deviate further with 16V and 18V standoff voltages respectively and are not recommended for direct substitution without circuit re-evaluation.

All recommended substitutes maintain surface-mount DO-214AC (SMA) packaging, ROHS3 compliance, and MSL 1 moisture sensitivity rating, ensuring compatibility with existing assembly processes and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can SMAJ15CA directly replace CD214A-T15CALF without circuit modification?

A: Yes. SMAJ15CA (EVVO Semi) is a direct electrical equivalent with identical voltage ratings (15V standoff, 16.7V breakdown, 24.4V clamping) and current handling (16.4A peak pulse). Both use DO-214AC (SMA) packaging. No circuit changes are required.

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

A: Direct equivalents (SMAJ15CA, SMAJ15CA-TP, SZ1SMA15CAT3G, TV04A150JB-HF) match all electrical parameters identically. Similar substitutes (SM4T18CAY, SMA6J15CA-TR, SMAJ15CA-TR) share the 15V standoff voltage and package but have higher clamping voltages and peak pulse currents. Similar substitutes require circuit analysis to confirm compatibility.

Q: Why do some substitutes show different peak pulse current measurements (10/1000µs vs. 8/20µs)?

A: Peak pulse current is measured under different waveform conditions. The 10/1000µs waveform (CD214A-T15CALF: 16.4A) and 8/20µs waveform (SM4T18CAY: 71A) represent different transient event profiles. Direct comparison requires understanding the actual transient waveform in the application circuit.

Q: Is SZ1SMA15CAT3G suitable for automotive applications?

A: Yes. SZ1SMA15CAT3G carries AEC-Q101 automotive qualification and is rated for -65°C to 150°C operation, making it suitable for automotive-grade designs requiring enhanced reliability standards.

Q: Can I use SMAJ16CA-M3/61 or SMAJ18CA-M3/61 as substitutes?

A: These parts have different reverse standoff voltages (16V and 18V respectively) and are not direct substitutes. Use only if circuit design explicitly permits the higher standoff voltage and corresponding changes in breakdown and clamping characteristics.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats. All maintain the DO-214AC (SMA) component package. Verify packaging format matches your assembly equipment and procurement requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original CD214A-T15CALF.

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