CD214A-T30CALF Equivalent & Substitute Parts

Part Overview

The CD214A-T30CALF is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 30V reverse standoff voltage and 48.4V maximum clamping voltage, delivering 8.3A peak pulse current in a compact DO-214AC (SMA) package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	CD214A-T30CALF	—
Manufacturer	Bourns Inc.	—
Category	Transient Voltage Suppressors (TVS)	—
Type	Zener, Bidirectional	—
Voltage - Reverse Standoff (Typ)	30	V
Voltage - Breakdown (Min)	33.3	V
Voltage - Clamping (Max) @ Ipp	48.4	V
Current - Peak Pulse (10/1000µs)	8.3	A
Power - Peak Pulse	400	W
Package / Case	DO-214AC, SMA	—
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the CD214A-T30CALF is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 30V
Voltage - Clamping (Max) @ Ipp: 48.4V
Current - Peak Pulse (10/1000µs): 8.3A
Power - Peak Pulse: 400W
Package / Case: DO-214AC (SMA)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C (TJ)

Direct Equivalent: Parts meeting all primary criteria with identical electrical specifications and package form factor are classified as direct equivalents.

Similar Substitutes: Parts with the same package, mounting type, and operating temperature range but with variations in voltage ratings or peak pulse current are classified as similar substitutes. These parts may be used in applications where the specific voltage or current parameters differ slightly from the original specification, provided the application requirements permit such variation.

Parameter Comparison

Parameter	CD214A-T30CALF (Bourns)	SMAJ30CA (Good-Ark)	P4SMA30CA-M3/5A (Vishay)	P4SMA33CA-M3/5A (Vishay)	SM4T35CAY (STMicroelectronics)	SMA5J24CA-M3/5A (Vishay)	SMA5J28CA-M3/5A (Vishay)
Voltage - Reverse Standoff (Typ)	30V	30V	25.6V	28.2V	30V	24V	28V
Voltage - Breakdown (Min)	33.3V	33.3V	28.5V	31.4V	33.3V	26.7V	31.1V
Voltage - Clamping (Max) @ Ipp	48.4V	48.4V	41.4V	45.7V	64.3V	38.9V	45.4V
Current - Peak Pulse (10/1000µs)	8.3A	8.3A	9.7A	8.8A	36A (8/20µs)	12.9A	11A
Power - Peak Pulse	400W	400W	400W	400W	400W	500W	500W
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature	-55 to 150°C	-55 to 150°C	-65 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Choice):

The SMAJ30CA manufactured by Good-Ark Semiconductor is the direct equivalent to the CD214A-T30CALF. This part matches all critical electrical parameters: 30V reverse standoff voltage, 48.4V clamping voltage, 8.3A peak pulse current, and 400W peak pulse power. The package, mounting type, and operating temperature range are identical. The SMAJ30CA is currently in active production status with 35,300 units in stock, ensuring long-term availability. RoHS3 compliance and MSL 1 rating are maintained.

Similar Substitutes (Application-Dependent Selection):

The P4SMA33CA-M3/5A and P4SMA33CA-M3/61 from Vishay General Semiconductor are similar substitutes with slightly lower reverse standoff voltage (28.2V) and clamping voltage (45.7V), but comparable peak pulse current (8.8A). These parts are suitable for applications where the voltage parameters can tolerate the specified variation. Both are active products with strong inventory availability (1,148 and 1,088 units respectively) and extended operating temperature range (-65 to 150°C).

The P4SMA30CA-M3/5A and P4SMA30CA-M3/61 offer lower clamping voltage (41.4V) with higher peak pulse current (9.7A), suitable for applications requiring increased current handling capacity at the expense of lower voltage clamping.

The SMA5J28CA-M3/5A from Vishay provides 28V reverse standoff voltage with 45.4V clamping voltage and 11A peak pulse current at 500W peak pulse power, offering higher power dissipation capability for demanding applications.

The SM4T35CAY from STMicroelectronics maintains the 30V reverse standoff voltage but features significantly higher peak pulse current (36A at 8/20µs pulse width) and higher clamping voltage (64.3V). This part includes AEC-Q101 automotive qualification and is suitable for automotive-grade applications requiring enhanced transient protection.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and surface-mount DO-214AC (SMA) package compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use SMAJ30CA as a direct replacement for CD214A-T30CALF?

A: Yes. The SMAJ30CA is a direct equivalent with identical electrical specifications (30V standoff, 48.4V clamping, 8.3A peak pulse current) and package form factor. It is the recommended replacement for obsolete CD214A-T30CALF applications.

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

A: Direct equivalents match all critical electrical parameters and package specifications of the original part. Similar substitutes share the same package and mounting type but have variations in voltage ratings or peak pulse current. Similar substitutes require application-level verification that the parameter variations are acceptable for the intended circuit function.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, matching the environmental and regulatory status of the original CD214A-T30CALF.

Q: Can I use a substitute with higher peak pulse current than the original specification?

A: Yes, provided the application circuit can accommodate the higher current capability. Higher peak pulse current indicates greater transient protection capacity. However, verify that the clamping voltage and other electrical parameters remain within acceptable limits for your circuit design.

Q: What is the significance of the operating temperature range difference between parts?

A: The CD214A-T30CALF and most direct equivalents operate from -55°C to 150°C. Some Vishay substitutes extend the lower temperature limit to -65°C, providing enhanced performance in extreme cold environments. This difference is not critical for standard industrial applications but may be relevant for aerospace or arctic deployment scenarios.

Q: Why does SM4T35CAY have a significantly higher peak pulse current specification?

A: The SM4T35CAY is designed for automotive-grade applications with AEC-Q101 qualification. The higher peak pulse current (36A at 8/20µs) reflects a different pulse width measurement standard and indicates enhanced transient suppression capability suitable for automotive power distribution networks. This part is a similar substitute for applications requiring automotive-grade protection.

Q: Are packaging options other than DO-214AC (SMA) available?

A: All listed substitute parts are specified in DO-214AC (SMA) surface-mount package only. This ensures mechanical and electrical compatibility with the original CD214A-T30CALF footprint and PCB layout.

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