CD214A-T90ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T90ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., housed in a DO-214AC (SMA) surface mount package. This component is designed for general-purpose transient voltage protection applications with a 90V reverse standoff voltage and 146V maximum clamping voltage. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CD214A-T90ALF

Bourns Inc.In Stock: 1152CD214A-T90ALF Datasheet

Current PartRFQ

SMAJ90A

HY Electronic (Cayman) LimitedIn Stock: 10366SMAJ90A Datasheet

DirectRFQ

SMAJ90A

HY Electronic (Cayman) LimitedIn Stock: 10366SMAJ90A Datasheet

DirectRFQ

P4SMA100A-M3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 832P4SMA100A-M3/61 Datasheet

SimilarRFQ

SMAJ90A-TP

Micro Commercial CoIn Stock: 3843SMAJ90A-TP Datasheet

SimilarRFQ

SMAJP4KE91A-TP

Micro Commercial CoIn Stock: 1029SMAJP4KE91A-TP Datasheet

SimilarRFQ

TV04A900J-G

Comchip TechnologyIn Stock: 1115TV04A900J-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214A-T90ALF is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Clamping (Max) @ Ipp: 146V
• Current - Peak Pulse (10/1000µs): 2.7A (minimum acceptable)
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Substitute Classification:

Direct Equivalents (all critical parameters match within tolerance):

• SMAJ90A (HY Electronic)
• SMAJ90A-TP (Micro Commercial Co)
• TV04A900J-G (Comchip Technology)

Similar Substitutes (one or more electrical parameters deviate; engineering evaluation required for application fit):

• P4SMA100A-M3/61 (Vishay): Lower reverse standoff (85.5V), lower clamping voltage (137V), lower peak pulse current (2.2A)
• SMAJP4KE91A-TP (Micro Commercial Co): Lower reverse standoff (77.8V), lower clamping voltage (125V), higher peak pulse current (3.3A)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Circuit Re-evaluation Required):

SMAJ90A, SMAJ90A-TP, and TV04A900J-G are functionally equivalent to the CD214A-T90ALF. All three maintain identical electrical specifications for reverse standoff voltage, clamping voltage, and peak pulse current within the original design envelope. All substitute parts are in active production status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental compliance.

For Similar Substitutes (Circuit Re-evaluation Required):

P4SMA100A-M3/61 and SMAJP4KE91A-TP deviate from the original specifications and are suitable only when application requirements permit tolerance in voltage parameters. P4SMA100A-M3/61 operates at lower voltage levels (85.5V standoff, 137V clamping) and reduced power dissipation (300W), making it unsuitable for circuits requiring the full 90V/146V protection envelope. SMAJP4KE91A-TP exhibits significantly lower voltage ratings (77.8V standoff, 125V clamping) but higher peak pulse current capability (3.3A), appropriate only for lower-voltage protection circuits with higher current transient requirements.

Frequently Asked Questions (FAQ)

Q: Can SMAJ90A directly replace CD214A-T90ALF without circuit modification?

A: Yes. SMAJ90A matches all critical electrical parameters: 90V reverse standoff, 146V clamping voltage, 2.8A peak pulse current, and 400W power dissipation. The part is in active production with ROHS3 compliance and identical DO-214AC (SMA) packaging.

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

A: Direct equivalents (SMAJ90A, SMAJ90A-TP, TV04A900J-G) maintain all electrical specifications within the original design parameters. Similar substitutes (P4SMA100A-M3/61, SMAJP4KE91A-TP) have deviations in voltage ratings or power dissipation and require circuit analysis to confirm compatibility with the application's transient voltage profile.

Q: Are all substitute parts ROHS3 compliant?

A: SMAJ90A, SMAJ90A-TP, TV04A900J-G, and P4SMA100A-M3/61 are confirmed ROHS3 compliant. SMAJP4KE91A-TP does not specify RoHS status in available documentation.

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature range is a secondary consideration for substitution. SMAJ90A-TP and SMAJP4KE91A-TP extend the upper temperature limit to 175°C compared to the original 150°C, providing enhanced thermal margin. This does not prevent substitution but may offer design benefits in thermally constrained applications.

Q: Can P4SMA100A-M3/61 be used in place of CD214A-T90ALF?

A: P4SMA100A-M3/61 is a similar substitute with lower electrical ratings. It is suitable only if the application circuit operates at lower transient voltage levels (85.5V standoff instead of 90V) and can tolerate reduced clamping voltage (137V instead of 146V) and lower power dissipation (300W instead of 400W). Circuit re-evaluation is required.

Q: What is the inventory status of substitute parts?

A: SMAJ90A has the highest inventory availability (10,300 pcs). SMAJ90A-TP (3,765 pcs), TV04A900J-G (1,064 pcs), and SMAJP4KE91A-TP (1,019 pcs) maintain adequate stock levels. P4SMA100A-M3/61 has lower availability (777 pcs).