CD214A-T6.5CALF Equivalent & Substitute Parts

Part Overview

The CD214A-T6.5CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection applications. This component features a 6.5V reverse standoff voltage with an 11.2V maximum clamping voltage and 35.7A peak pulse current capability in a surface-mount 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
Manufacturer Part Number	CD214A-T6.5CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	6.5V
Voltage - Breakdown (Min)	7.22V
Voltage - Clamping (Max) @ Ipp	11.2V
Current - Peak Pulse (10/1000µs)	35.7A
Power - Peak Pulse	400W
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the CD214A-T6.5CALF is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 6.5V (exact match required)
Voltage - Clamping (Max) @ Ipp: 11.2V (exact match required)
Current - Peak Pulse (10/1000µs): 35.7A (exact match required)
Package / Case: DO-214AC, SMA (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Factors:

Bidirectional Channels: 1 (single channel)
Power - Peak Pulse: 400W (exact match required)
RoHS Status: ROHS3 Compliant (compliance requirement)

Substitute parts are classified into two categories:

Direct Equivalents: Parts meeting all primary substitution criteria with identical electrical performance characteristics.

Similar Alternatives: Parts with the same reverse standoff voltage (6.5V) and package format but with different clamping voltages or peak pulse currents. These require circuit-level evaluation for compatibility.

Parameter Comparison

Parameter	CD214A-T6.5CALF (Bourns)	SMAJ6.5CA (MDD)	SMAJ6.5CA-TP (Micro Commercial Co)	TV04A6V5JB-HF (Comchip)	SM4T7V6CAY (STMicroelectronics)	SMA6J6.5CA-TR (STMicroelectronics)	SMAJ6.5CA-TR (STMicroelectronics)	SMAJ7.0CA-M3/5A (Vishay)
Voltage - Reverse Standoff (Typ)	6.5V	6.5V	6.5V	6.5V	6.5V	6.5V	6.5V	7V
Voltage - Breakdown (Min)	7.22V	7.22V	7.22V	7.22V	7.2V	7.2V	7.2V	7.78V
Voltage - Clamping (Max) @ Ipp	11.2V	11.2V	11.2V	11.2V	14.5V	14.5V	14.5V	12V
Current - Peak Pulse (10/1000µs)	35.7A	35.7A	35.7A	35.71A	160A (8/20µs)	276A (8/20µs)	160A (8/20µs)	33.3A
Power - Peak Pulse	400W	400W	400W	400W	400W	600W	400W	400W
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)	-50°C ~ 150°C (TJ)	-55°C ~ 175°C (TA)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 175°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Parts (Recommended for Drop-In Replacement):

SMAJ6.5CA (MDD), SMAJ6.5CA-TP (Micro Commercial Co), and TV04A6V5JB-HF (Comchip) are direct electrical equivalents to the CD214A-T6.5CALF. These parts maintain identical voltage ratings (6.5V reverse standoff, 11.2V clamping), peak pulse current (35.7A), and power dissipation (400W). All three are active products with ROHS3 compliance and are suitable for direct substitution in existing designs without circuit modification.

Similar Alternative Parts (Requires Circuit Evaluation):

SM4T7V6CAY (STMicroelectronics), SMA6J6.5CA-TR (STMicroelectronics), and SMAJ6.5CA-TR (STMicroelectronics) share the same 6.5V reverse standoff voltage and DO-214AC package but feature higher clamping voltages (14.5V) and increased peak pulse current ratings. These parts are suitable only when the application circuit can tolerate higher clamping voltages and the additional current handling capability is beneficial or neutral to system performance.

SMAJ7.0CA-M3/5A (Vishay) has a 7V reverse standoff voltage, which differs from the original 6.5V specification. This part is not recommended as a direct substitute due to the voltage mismatch, which may affect circuit protection thresholds.

Compliance and Availability:

All recommended substitute parts maintain ROHS3 compliance and are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete CD214A-T6.5CALF.

Frequently Asked Questions (FAQ)

Q: Can SMAJ6.5CA (MDD) be used as a direct replacement for CD214A-T6.5CALF?

A: Yes. SMAJ6.5CA matches all critical electrical parameters: 6.5V reverse standoff, 11.2V clamping voltage, 35.7A peak pulse current, and 400W power dissipation. The DO-214AC (SMA) package and surface-mount configuration are identical. No circuit modifications are required.

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

A: Direct equivalents (SMAJ6.5CA, SMAJ6.5CA-TP, TV04A6V5JB-HF) have identical electrical specifications to the original part. Similar alternatives (SM4T7V6CAY, SMA6J6.5CA-TR, SMAJ6.5CA-TR) share the same reverse standoff voltage and package but have higher clamping voltages (14.5V instead of 11.2V) and increased peak pulse current ratings. Similar alternatives require circuit-level analysis to confirm compatibility.

Q: Why is SMAJ7.0CA-M3/5A not recommended?

A: SMAJ7.0CA-M3/5A has a 7V reverse standoff voltage, which exceeds the original 6.5V specification. This voltage difference alters the protection threshold and may compromise circuit protection performance. It is not a suitable substitute.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original CD214A-T6.5CALF.

Q: What is the operating temperature range difference between substitutes?

A: Most substitutes operate within -55°C to 150°C, matching the original part. SMAJ6.5CA-TP and SMA6J6.5CA-TR extend the upper temperature limit to 175°C, providing additional thermal margin in high-temperature applications. This difference does not affect substitution suitability for standard operating conditions.

Q: Can I use SMA6J6.5CA-TR instead of SMAJ6.5CA-TR?

A: Both parts have identical voltage ratings (6.5V reverse standoff, 14.5V clamping) and package format. SMA6J6.5CA-TR offers higher peak pulse current (276A vs. 160A) and increased power dissipation (600W vs. 400W). SMA6J6.5CA-TR is suitable for applications requiring greater transient energy absorption. Both require circuit evaluation due to the higher clamping voltage compared to the original CD214A-T6.5CALF.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in DO-214AC (SMA) surface-mount package format, matching the original CD214A-T6.5CALF. Packaging variations (Tape & Reel, Cut Tape, Digi-Reel) are available from different manufacturers but do not affect electrical compatibility or PCB assembly compatibility.

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