CD214B-T75ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T75ALF 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 75V reverse standoff voltage and 121V maximum clamping voltage, housed in a DO-214AA (SMB) package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

CD214B-T75ALF

Bourns Inc.In Stock: 893CD214B-T75ALF Datasheet

Current PartRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

DirectRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

DirectRFQ

SMBJ75A

MeritekIn Stock: 4432SMBJ75A Datasheet

DirectRFQ

SMBJ64A-HR

Littelfuse Inc.In Stock: 720SMBJ64A-HR Datasheet

SimilarRFQ

TV06B750J-G

Comchip TechnologyIn Stock: 1123TV06B750J-G Datasheet

SimilarRFQ

TV06B750J-HF

Comchip TechnologyIn Stock: 1049TV06B750J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214B-T75ALF is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 75V
• Voltage - Clamping (Max) @ Ipp: 121V
• Current - Peak Pulse (10/1000µs): 4.9A nominal
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Substitute parts are classified into two categories:

Direct Substitutes: Parts with identical electrical specifications (75V standoff, 121V clamp, ~4.9A peak pulse) and matching package. These provide pin-for-pin and functional equivalence.

Similar Substitutes: Parts with comparable but not identical electrical specifications. SMBJ64A-HR operates at a lower voltage rating (64V standoff, 103V clamp) and higher peak pulse current (5.9A), making it suitable only for applications with lower voltage requirements but higher current capacity.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Recommended for Equivalent Replacement):

SMBJ75A (Meritek), TV06B750J-G (Comchip), and TV06B750J-HF (Comchip) are functionally equivalent to the CD214B-T75ALF. All three maintain identical voltage ratings (75V standoff, 121V clamp) and equivalent peak pulse current specifications (4.96A). All substitute parts are ROHS3 compliant with MSL 1 rating, matching the original part's environmental compliance. These parts are currently in active production status, ensuring long-term availability and supply chain stability.

Similar Substitute (Limited Application):

SMBJ64A-HR (Littelfuse Inc.) operates at reduced voltage specifications (64V standoff, 103V clamp) with increased peak pulse current capacity (5.9A). This part is suitable only for circuit designs where the lower voltage rating is acceptable and the higher current capacity provides additional margin. The SMBJ64A-HR is ROHS3 compliant and actively produced.

Frequently Asked Questions (FAQ)

Q: Can SMBJ75A replace CD214B-T75ALF directly?

A: Yes. SMBJ75A provides direct electrical and mechanical equivalence with identical 75V standoff voltage, 121V clamping voltage, and 4.96A peak pulse current. Both use DO-214AA (SMB) surface-mount packaging. The part is actively produced by Meritek, addressing the obsolescence of the original Bourns component.

Q: What is the difference between TV06B750J-G and TV06B750J-HF?

A: Both Comchip parts (TV06B750J-G and TV06B750J-HF) share identical electrical specifications and package type. The designation difference reflects internal manufacturing or packaging variations. Both are suitable direct replacements for the CD214B-T75ALF.

Q: Why is SMBJ64A-HR listed as a similar substitute rather than a direct substitute?

A: SMBJ64A-HR operates at 64V reverse standoff voltage and 103V clamping voltage, compared to the 75V and 121V specifications of the CD214B-T75ALF. This lower voltage rating makes it unsuitable for circuits designed for 75V protection. Use SMBJ64A-HR only in applications where the reduced voltage threshold is acceptable.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (SMBJ75A, TV06B750J-G, TV06B750J-HF, and SMBJ64A-HR) are ROHS3 compliant with MSL 1 moisture sensitivity rating, matching the environmental compliance of the original CD214B-T75ALF.

Q: What is the inventory status of substitute parts?

A: SMBJ75A has 4,335 units in stock. TV06B750J-G has 1,102 units in stock. TV06B750J-HF has 946 units in stock. SMBJ64A-HR has 705 units in stock. All parts are available as new original components.