CD214B-T43ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T43ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. Packaged in DO-214AA (SMB), this component operates across a temperature range of -55°C to 150°C and is ROHS3 compliant with MSL 1 rating.

The CD214B-T43ALF is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 43V reverse standoff protection with 69.4V clamping voltage.

Substiute Parts

CD214B-T43ALF

Bourns Inc.In Stock: 893CD214B-T43ALF Datasheet

Current PartRFQ

SMBJ43A

MeritekIn Stock: 15892SMBJ43A Datasheet

DirectRFQ

SMBJ43A

MeritekIn Stock: 15892SMBJ43A Datasheet

DirectRFQ

SMBJ43A

MeritekIn Stock: 15892SMBJ43A Datasheet

DirectRFQ

SMBJ40A

MDDIn Stock: 17458SMBJ40A Datasheet

SimilarRFQ

SMBJ43A-HRA

LittelfuseIn Stock: 1184SMBJ43A-HRA Datasheet

SimilarRFQ

SMBJ43A-TP

Micro Commercial CoIn Stock: 3755SMBJ43A-TP Datasheet

SimilarRFQ

SMBJ45A-HR

Littelfuse Inc.In Stock: 761SMBJ45A-HR Datasheet

SimilarRFQ

TPSMB56A

Littelfuse Inc.In Stock: 4208TPSMB56A Datasheet

SimilarRFQ

TV06B430J-G

Comchip TechnologyIn Stock: 849TV06B430J-G Datasheet

SimilarRFQ

TV06B430J-HF

Comchip TechnologyIn Stock: 1031TV06B430J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD214B-T43ALF are grouped based on strict electrical and mechanical parameter alignment:

Direct Substitutes maintain identical electrical specifications:

• Voltage - Reverse Standoff (Typ): 43V
• Voltage - Clamping (Max) @ Ipp: 69.4V
• Current - Peak Pulse (10/1000µs): 8.6A to 8.7A
• Package / Case: DO-214AA (SMB)
• Power - Peak Pulse: 600W

Similar Substitutes deviate in one or more key electrical parameters while maintaining the same package and general application category. These parts are suitable only when the specific voltage or current deviation is acceptable for the target application.

All substitute candidates maintain ROHS3 compliance, MSL 1 rating, and surface mount DO-214AA packaging, ensuring mechanical and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

Preferred Direct Substitutes (Identical Electrical Specifications):

SMBJ43A (Meritek), SMBJ43A-HRA (Littelfuse), SMBJ43A-TP (Micro Commercial Co), TV06B430J-HF (Comchip Technology), and TV06B430J-G (Comchip Technology) are all active products with matching 43V reverse standoff and 69.4V clamping voltage specifications. These parts maintain full electrical and mechanical compatibility with the CD214B-T43ALF. All are ROHS3 compliant with MSL 1 rating and DO-214AA packaging.

SMBJ43A-HRA and SMBJ43A-TP offer extended operating temperature ranges (-65°C to 150°C and -55°C to 175°C respectively), providing additional thermal margin for demanding applications.

Similar Substitutes (Voltage Deviation):

SMBJ40A (MDD) operates at 40V reverse standoff with 64.5V clamping voltage, representing a 3V reduction in both parameters. This part is suitable only for applications where lower voltage protection is acceptable.

SMBJ45A-HR (Littelfuse Inc.) operates at 45V reverse standoff with 72.7V clamping voltage, representing a 2V increase in both parameters. This part is suitable for applications requiring higher voltage protection margins.

TPSMB56A (Littelfuse Inc.) operates at 47.8V reverse standoff with 77V clamping voltage and includes AEC-Q101 automotive qualification. This part is suitable only for applications requiring automotive-grade components and higher voltage protection.

Frequently Asked Questions (FAQ)

Q: Can SMBJ43A directly replace CD214B-T43ALF?

A: Yes. SMBJ43A maintains identical reverse standoff voltage (43V), clamping voltage (69.4V), peak pulse current (8.65A), and package (DO-214AA). Both are ROHS3 compliant with MSL 1 rating. SMBJ43A is an active product with established supply availability.

Q: What is the difference between SMBJ43A-HRA and SMBJ43A-TP?

A: Both maintain identical electrical specifications (43V standoff, 69.4V clamping). SMBJ43A-HRA operates from -65°C to 150°C, while SMBJ43A-TP operates from -55°C to 175°C. Selection depends on the target application's temperature requirements.

Q: Can SMBJ40A or SMBJ45A-HR be used as substitutes?

A: These are similar substitutes with voltage deviations. SMBJ40A provides lower protection (40V standoff, 64.5V clamping), suitable only if the application tolerates reduced voltage margins. SMBJ45A-HR provides higher protection (45V standoff, 72.7V clamping), suitable only if the application requires increased voltage margins.

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

A: Yes. All listed substitutes use DO-214AA (SMB) surface mount packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What compliance certifications apply to these parts?

A: All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. TPSMB56A includes additional AEC-Q101 automotive qualification. Verify specific compliance requirements for your application before final selection.

Q: Why is CD214B-T43ALF marked as obsolete?

A: Obsolescence reflects manufacturer discontinuation. Active substitute parts with identical or compatible specifications are available from multiple manufacturers, ensuring design continuity and supply chain flexibility.