CD214A-T17ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T17ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional Zener diode operates with a 17V reverse standoff voltage and provides 27.6V clamping at peak pulse current. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CD214A-T17ALF

Bourns Inc.In Stock: 724CD214A-T17ALF Datasheet

Current PartRFQ

SMAJ17A

MeritekIn Stock: 2780SMAJ17A Datasheet

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SMAJ17A

MeritekIn Stock: 2780SMAJ17A Datasheet

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SMAJ15A-M3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 986SMAJ15A-M3/5A Datasheet

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SMAJ15A-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 220170SMAJ15A-M3/61 Datasheet

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SMAJ16A-M3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1245SMAJ16A-M3/5A Datasheet

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SMAJ16A-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 1101SMAJ16A-M3/61 Datasheet

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SMAJ17A-TP

Micro Commercial CoIn Stock: 5986SMAJ17A-TP Datasheet

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SMAJP4KE18A-TP

Micro Commercial CoIn Stock: 5523SMAJP4KE18A-TP Datasheet

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TV04A170J-G

Comchip TechnologyIn Stock: 909TV04A170J-G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD214A-T17ALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The critical parameters that define substitutability are:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 14.5A (±0.05A tolerance acceptable)
• Power - Peak Pulse: 400W

Mechanical Parameters:

• Package / Case: DO-214AC (SMA)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are classified as either direct equivalents (matching all electrical parameters within tolerance) or similar alternatives (meeting the same functional requirements with minor parameter variations acceptable for the application).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

SMAJ17A (Meritek) and TV04A170J-G (Comchip Technology) are direct electrical equivalents to the CD214A-T17ALF. Both maintain identical reverse standoff voltage (17V), breakdown voltage (18.9V), and clamping voltage (27.6V) specifications. Peak pulse current values are within 0.01A of the original part. Both are active products with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and regulatory compliance.

SMAJ17A-TP (Micro Commercial Co) provides an exact electrical match with identical peak pulse current (14.5A) and extends the operating temperature range to -55°C ~ 175°C, offering enhanced thermal performance. This part is supplied in Tape & Reel packaging and is actively produced.

Similar Alternatives (Secondary Substitutes):

SMAJ16A-M3/5A and SMAJ16A-M3/61 (Vishay TransZorb® series) operate at 16V reverse standoff with 26V clamping voltage. These parts are suitable for applications where the lower voltage rating is acceptable. Peak pulse current is 15.4A, providing slightly higher current handling than the original specification.

SMAJ15A-M3/5A and SMAJ15A-M3/61 (Vishay TransZorb® series) operate at 15V reverse standoff with 24.4V clamping voltage. These are appropriate only for circuits designed to tolerate lower protection thresholds.

SMAJP4KE18A-TP (Micro Commercial Co) operates at 15.3V reverse standoff with 25.5V clamping voltage and 16.1A peak pulse current. This part extends the operating temperature range to -55°C ~ 175°C.

All substitute parts maintain DO-214AC (SMA) package compatibility, surface-mount configuration, and ROHS3 compliance with MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SMAJ17A be used as a direct replacement for CD214A-T17ALF?

A: Yes. SMAJ17A matches all critical electrical parameters: 17V reverse standoff, 18.9V breakdown voltage, 27.6V clamping voltage, and 14.49A peak pulse current. The 0.01A current difference is within acceptable tolerance for TVS diode applications. Both parts use DO-214AC (SMA) packaging and are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between SMAJ17A and SMAJ17A-TP?

A: Both parts are electrically identical with 17V reverse standoff and 27.6V clamping voltage. SMAJ17A-TP is supplied in Tape & Reel (TR) packaging and extends the operating temperature range to -55°C ~ 175°C compared to the standard -55°C ~ 150°C range. SMAJ17A-TP is manufactured by Micro Commercial Co, while SMAJ17A is from Meritek.

Q: Can I use SMAJ16A parts as substitutes?

A: SMAJ16A-M3/5A and SMAJ16A-M3/61 are similar alternatives, not direct equivalents. These parts operate at 16V reverse standoff (1V lower than the original) with 26V clamping voltage (1.6V lower). They are suitable only if your circuit design can tolerate the reduced protection threshold. Peak pulse current is 15.4A, which is higher than the original 14.5A.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original CD214A-T17ALF specifications.

Q: What is the significance of the DO-214AC (SMA) package?

A: DO-214AC, commonly referred to as SMA, is a surface-mount package standard for TVS diodes. All substitute parts listed use this identical package, ensuring mechanical and electrical compatibility with existing PCB layouts and soldering processes.

Q: Why is the CD214A-T17ALF marked as obsolete?

A: The CD214A-T17ALF is no longer manufactured by Bourns Inc. The listed substitute parts from active manufacturers (Meritek, Micro Commercial Co, Comchip Technology, and Vishay) provide equivalent or superior performance with guaranteed ongoing availability and supply chain support.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet your circuit's electrical requirements. Direct equivalents (SMAJ17A, SMAJ17A-TP, TV04A170J-G) are interchangeable. Similar alternatives (SMAJ16A, SMAJ15A series) should be evaluated individually based on your specific voltage protection requirements.