CD214A-T75ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T75ALF is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose transient protection applications. This component features a 75V reverse standoff voltage with 121V maximum clamping voltage and 3.3A peak pulse current capability in a surface-mount DO-214AC (SMA) package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CD214A-T75ALF

Bourns Inc.In Stock: 847CD214A-T75ALF Datasheet

Current PartRFQ

SMAJ75A

MDDIn Stock: 37444SMAJ75A Datasheet

DirectRFQ

SMAJ75A

MDDIn Stock: 37444SMAJ75A Datasheet

DirectRFQ

SMAJ70A-M3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1134SMAJ70A-M3/5A Datasheet

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SMAJ75A-TP

Micro Commercial CoIn Stock: 5826SMAJ75A-TP Datasheet

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SMAJP4KE82A-TP

Micro Commercial CoIn Stock: 784SMAJP4KE82A-TP Datasheet

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TV04A750J-G

Comchip TechnologyIn Stock: 980TV04A750J-G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD214A-T75ALF are classified based on strict electrical and mechanical parameter alignment within the TVS diode category. The substitution logic is determined by the following critical parameters:

Primary Substitution Criteria:

• Unidirectional channel configuration (1 channel required)
• Voltage - Reverse Standoff: 75V nominal
• Voltage - Clamping (Max) @ Ipp: 121V
• Current - Peak Pulse (10/1000µs): 3.3A nominal
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC (SMA) surface mount
• Mounting Type: Surface Mount

Direct Equivalents maintain all critical electrical parameters within specification tolerance and are suitable for direct replacement without circuit redesign.

Similar Alternatives exhibit minor deviations in standoff voltage (70V vs. 75V) or peak pulse current (4.6A to 3.6A vs. 3.3A) while maintaining the same clamping voltage and package format. These parts are functionally compatible for applications where the specified tolerance band permits such variation.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement Options (Preferred):

SMAJ75A (MDD), SMAJ75A-TP (Micro Commercial Co), and TV04A750J-G (Comchip) are direct electrical equivalents with identical standoff voltage (75V), breakdown voltage (83.3V), clamping voltage (121V), and peak pulse current (3.3A to 3.31A). All three maintain ROHS3 compliance and MSL 1 rating. SMAJ75A-TP offers extended operating temperature range (-55°C to 175°C) compared to the original specification. These parts are suitable for direct PCB substitution without circuit modification.

Alternative Options (Conditional Use):

SMAJ70A-M3/5A (Vishay) and SMAJP4KE82A-TP (Micro Commercial Co) feature reduced standoff voltage (70V to 70.1V) and lower clamping voltage (113V) with slightly elevated peak pulse current (4.6A to 3.6A). These alternatives are functionally compatible only in applications where the circuit design tolerates the 5V reduction in standoff voltage and 8V reduction in clamping voltage. Both maintain 400W peak pulse power and surface-mount DO-214AC packaging. SMAJP4KE82A-TP RoHS status is not specified in available documentation.

Compliance Considerations:

All recommended direct equivalents maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. The original CD214A-T75ALF is classified as REACH Affected; substitute parts from MDD and Comchip are REACH Unaffected, while Vishay and Micro Commercial Co parts show REACH Unaffected or unspecified status.

Frequently Asked Questions (FAQ)

Q: Can SMAJ70A-M3/5A be used as a direct replacement for CD214A-T75ALF?

A: SMAJ70A-M3/5A is functionally compatible but not a direct equivalent. The 70V standoff voltage is 5V lower than the original 75V specification, and clamping voltage is reduced from 121V to 113V. Use this part only if circuit design margins accommodate these parameter reductions.

Q: What is the difference between SMAJ75A (MDD) and SMAJ75A-TP (Micro Commercial Co)?

A: Both parts maintain identical electrical parameters (75V standoff, 121V clamping, 3.3A peak pulse). The primary difference is operating temperature range: MDD version operates -50°C to 150°C, while MCC version operates -55°C to 175°C. The MCC variant provides wider temperature coverage and is preferred for extended-range applications.

Q: Are all substitute parts available in the same DO-214AC (SMA) package?

A: Yes. All listed substitute parts are manufactured in DO-214AC (SMA) surface-mount package format, ensuring mechanical and electrical compatibility with existing PCB layouts designed for the CD214A-T75ALF.

Q: Does the obsolete status of CD214A-T75ALF affect substitute part selection?

A: The obsolete status of the original part necessitates substitution but does not impose additional technical constraints. All recommended direct equivalents are active products with established supply chains and full technical documentation.

Q: Are there RoHS compliance concerns with any substitute parts?

A: SMAJ75A (MDD), SMAJ75A-TP (MCC), TV04A750J-G (Comchip), and SMAJ70A-M3/5A (Vishay) are all ROHS3 compliant. SMAJP4KE82A-TP RoHS status is not specified in available data; verify with manufacturer before use in RoHS-restricted applications.

Q: Which substitute part offers the best thermal performance?

A: SMAJ75A-TP (Micro Commercial Co) provides the widest operating temperature range (-55°C to 175°C), offering superior thermal margin compared to the original specification (-55°C to 150°C). This part is recommended for applications requiring extended temperature operation.