CD214A-T54CALF Equivalent & Substitute Parts

Part Overview

The CD214A-T54CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., classified as a unidirectional Zener-type device in the DO-214AC (SMA) surface mount package. This component is rated for 54V reverse standoff voltage with an 87.1V maximum clamping voltage and 4.6A peak pulse current capability. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

CD214A-T54CALF

Bourns Inc.In Stock: 1005CD214A-T54CALF Datasheet

Current PartRFQ

SMAJ54CA

MeritekIn Stock: 20018SMAJ54CA Datasheet

DirectRFQ

SMAJ54CA

MeritekIn Stock: 20018SMAJ54CA Datasheet

DirectRFQ

SMAJ51CA-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 1071SMAJ51CA-M3/61 Datasheet

SimilarRFQ

SMAJ51CA-TP

Micro Commercial CoIn Stock: 5297SMAJ51CA-TP Datasheet

SimilarRFQ

SMAJ54CA-TP

Micro Commercial CoIn Stock: 3117SMAJ54CA-TP Datasheet

SimilarRFQ

TV04A540JB-G

Comchip TechnologyIn Stock: 818TV04A540JB-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214A-T54CALF is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 54V
• Voltage - Clamping (Max) @ Ipp: 87.1V
• Current - Peak Pulse (10/1000µs): 4.6A (±0.1A tolerance acceptable)
• Package / Case: DO-214AC (SMA)
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional Channels: 1

Secondary Compatibility Factors:

• Operating Temperature range must encompass the application requirement
• RoHS3 compliance and MSL rating must meet or exceed the original specification
• Power - Peak Pulse: 400W

Substitute parts are classified into two categories:

Direct Equivalents: Parts with identical voltage ratings (54V standoff, 87.1V clamp) and current specifications (4.6A peak pulse).

Similar Alternatives: Parts with closely related voltage ratings (51V standoff, 82.4V clamp) and comparable current specifications (4.9A peak pulse). These are suitable only when the application circuit can tolerate the voltage differential and the lower clamping threshold does not compromise protection requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement Options (Identical Electrical Specifications):

SMAJ54CA (Meritek), SMAJ54CA-TP (Micro Commercial Co), and TV04A540JB-G (Comchip) are direct functional equivalents to the CD214A-T54CALF. All three maintain the 54V reverse standoff voltage, 87.1V clamping voltage, and 4.6A peak pulse current specifications. All are ROHS3 compliant with MSL 1 rating. These parts are currently in active production status, ensuring long-term availability and supply chain stability.

SMAJ54CA-TP and SMAJ51CA-TP offer extended operating temperature ranges (-55°C to 175°C) compared to the original specification (-55°C to 150°C), providing additional thermal margin for demanding applications.

Alternative Options (Similar Electrical Specifications):

SMAJ51CA-M3/61 (Vishay TransZorb®) and SMAJ51CA-TP (Micro Commercial Co) operate at 51V reverse standoff with 82.4V maximum clamping voltage. These parts are suitable for applications where the 3V reduction in standoff voltage and 4.7V reduction in clamping voltage do not compromise circuit protection requirements. Both maintain 4.9A peak pulse current capability and 400W power dissipation. These alternatives are appropriate only when circuit analysis confirms that the lower voltage thresholds remain within acceptable protection margins.

Compliance and Availability:

All substitute parts meet ROHS3 compliance and MSL 1 moisture sensitivity requirements. Direct equivalents (54V rating) are recommended for drop-in replacement without circuit re-evaluation. Similar alternatives (51V rating) require circuit-level assessment to confirm protection adequacy at the lower voltage thresholds.

Frequently Asked Questions (FAQ)

Q: Can SMAJ54CA directly replace CD214A-T54CALF without circuit modification?

A: Yes. SMAJ54CA maintains identical voltage ratings (54V standoff, 87.1V clamp) and current specifications (4.59A peak pulse). The DO-214AC (SMA) package is mechanically and electrically compatible. No circuit re-evaluation is required.

Q: What is the difference between the 54V and 51V rated parts?

A: The 54V parts (SMAJ54CA, SMAJ54CA-TP, TV04A540JB-G) maintain the original CD214A-T54CALF voltage specifications. The 51V parts (SMAJ51CA-M3/61, SMAJ51CA-TP) operate at lower voltage thresholds: 51V standoff versus 54V, and 82.4V clamping versus 87.1V. The 51V variants are suitable only when circuit protection requirements can tolerate these lower thresholds.

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

A: Yes. All listed substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical and footprint compatibility with the original CD214A-T54CALF design.

Q: What is the significance of the extended temperature range on SMAJ54CA-TP and SMAJ51CA-TP?

A: SMAJ54CA-TP and SMAJ51CA-TP are rated to -55°C to 175°C, compared to the original -55°C to 150°C specification. The extended upper temperature limit provides additional thermal margin in high-temperature operating environments, though this is not required for direct replacement in applications designed for the original temperature range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, meeting the compliance requirements of the original CD214A-T54CALF.

Q: Which substitute part offers the best long-term availability?

A: SMAJ54CA (Meritek) and SMAJ54CA-TP (Micro Commercial Co) are both in active production status with substantial inventory levels (19,960 and 3,100 units respectively), ensuring reliable long-term supply. TV04A540JB-G (Comchip) is also active but with lower inventory (720 units).