CD214A-T22ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T22ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 22V reverse standoff voltage, 35.5V maximum clamping voltage, and 11.2A peak pulse current capability in a DO-214AC (SMA) package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Active alternatives from other manufacturers provide identical or comparable electrical performance while maintaining the same package footprint and thermal characteristics.

Substiute Parts

CD214A-T22ALF

Bourns Inc.In Stock: 705CD214A-T22ALF Datasheet

Current PartRFQ

SMAJ22A

MDDIn Stock: 44967SMAJ22A Datasheet

DirectRFQ

SMAJ22A

MDDIn Stock: 44967SMAJ22A Datasheet

DirectRFQ

P4SMA24A-M3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1104P4SMA24A-M3/5A Datasheet

SimilarRFQ

SM4T26AY

STMicroelectronicsIn Stock: 10776SM4T26AY Datasheet

SimilarRFQ

SMAJ22A-TP

Micro Commercial CoIn Stock: 4117SMAJ22A-TP Datasheet

SimilarRFQ

SZ1SMA22AT3G

Littelfuse Inc.In Stock: 10321SZ1SMA22AT3G Datasheet

SimilarRFQ

TV04A220J-G

Comchip TechnologyIn Stock: 1173TV04A220J-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214A-T22ALF is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): 11.2A minimum
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC (SMA)
• Type: Zener, Unidirectional (1 channel)

Substitute parts are classified into two categories:

Direct Equivalents: Parts with identical electrical specifications across all critical parameters, differing only in manufacturer or product status (active vs. obsolete).

Similar Alternatives: Parts with the same reverse standoff voltage (22V) and package (DO-214AC/SMA) but with variations in clamping voltage, peak pulse current, or operating temperature range. These parts are suitable only when the application tolerates the specified parameter variations.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Preferred for Pin-Compatible Substitution):

SMAJ22A-TP (Micro Commercial Co) is the primary recommended substitute. It maintains identical electrical specifications to the CD214A-T22ALF (22V standoff, 24.4V breakdown, 35.5V clamping, 11.2A peak pulse), operates across an extended temperature range (-55 to 175°C TA), and is actively manufactured. This part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), matching the original part's environmental qualifications.

SMAJ22A (MDD) provides an alternative direct equivalent with marginally higher peak pulse current (11.3A vs. 11.2A), active product status, and ROHS3 compliance. The operating temperature range is -50 to 150°C (TJ), which is narrower at the lower end compared to the original specification.

SZ1SMA22AT3G (Littelfuse Inc.) offers identical electrical performance with extended lower temperature capability (-65°C minimum), active status, and AEC-Q101 automotive qualification. This part is suitable for applications requiring automotive-grade reliability.

TV04A220J-G (Comchip Technology) matches all critical electrical parameters with peak pulse current of 11.27A, active status, and ROHS3 compliance. Operating temperature range is -55 to 150°C (TJ).

Similar Alternative (Application-Dependent):

P4SMA24A-M3/5A (Vishay General Semiconductor) and SM4T26AY (STMicroelectronics) are similar alternatives with the same 22V reverse standoff voltage and DO-214AC package but with different clamping voltages and peak pulse currents. These parts are suitable only when the application circuit design accommodates the specified parameter deviations. P4SMA24A-M3/5A features lower clamping voltage (33.2V) and higher peak pulse current (12A). SM4T26AY features significantly higher clamping voltage (48.3V) and peak pulse current (48A at 8/20µs pulse width), with AEC-Q101 automotive qualification.

All recommended substitutes are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can SMAJ22A-TP be used as a direct drop-in replacement for CD214A-T22ALF?

A: Yes. SMAJ22A-TP maintains identical reverse standoff voltage (22V), breakdown voltage (24.4V), clamping voltage (35.5V), and peak pulse current (11.2A). Both use the DO-214AC (SMA) package with identical pinout and footprint. The part is actively manufactured and ROHS3 compliant.

Q: What is the difference between SMAJ22A and SMAJ22A-TP?

A: Both parts are electrically identical with 22V standoff, 24.4V breakdown, 35.5V clamping, and 11.2A peak pulse current. The primary difference is packaging: SMAJ22A-TP is supplied in Tape & Reel (TR) format, while SMAJ22A is available in standard packaging. Operating temperature ranges differ slightly: SMAJ22A-TP operates from -55 to 175°C (TA), while SMAJ22A operates from -50 to 150°C (TJ).

Q: Can P4SMA24A-M3/5A or SM4T26AY replace the CD214A-T22ALF?

A: These parts share the same 22V reverse standoff voltage and DO-214AC package but have different clamping voltages and peak pulse currents. P4SMA24A-M3/5A clamps at 33.2V with 12A peak pulse current. SM4T26AY clamps at 48.3V with 48A peak pulse current (8/20µs). Substitution is possible only if the application circuit design accommodates these parameter variations. Consult circuit requirements before selection.

Q: Why is SZ1SMA22AT3G recommended for automotive applications?

A: SZ1SMA22AT3G carries AEC-Q101 automotive qualification and operates across an extended lower temperature range (-65 to 150°C TJ). It maintains identical electrical specifications to the CD214A-T22ALF (22V standoff, 24.4V breakdown, 35.5V clamping, 11.3A peak pulse) and is actively manufactured with ROHS3 compliance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SMAJ22A, SMAJ22A-TP, SZ1SMA22AT3G, TV04A220J-G, P4SMA24A-M3/5A, and SM4T26AY) are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings.

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

A: The DO-214AC package, commonly referred to as SMA, is a standardized surface-mount package for small signal diodes and TVS devices. All substitute parts use this identical package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes. Pin configuration and footprint are identical across all listed parts.

Q: Can I use TV04A220J-G as a substitute?

A: Yes. TV04A220J-G matches all critical electrical parameters (22V standoff, 24.4V breakdown, 35.5V clamping, 11.27A peak pulse) and uses the DO-214AC (SMA) package. It is actively manufactured and ROHS3 compliant with operating temperature range of -55 to 150°C (TJ).