CD214B-T64ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T64ALF 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 64V reverse standoff voltage and provides 103V maximum clamping voltage at peak pulse current. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

CD214B-T64ALF

Bourns Inc.In Stock: 880CD214B-T64ALF Datasheet

Current PartRFQ

SMBJ64A

MeritekIn Stock: 23111SMBJ64A Datasheet

DirectRFQ

SMBJ64A

MeritekIn Stock: 23111SMBJ64A Datasheet

DirectRFQ

SMBJ64A

MeritekIn Stock: 23111SMBJ64A Datasheet

DirectRFQ

SMBJ64A-HR

Littelfuse Inc.In Stock: 720SMBJ64A-HR Datasheet

SimilarRFQ

TV06B640J-G

Comchip TechnologyIn Stock: 942TV06B640J-G Datasheet

SimilarRFQ

TV06B640J-HF

Comchip TechnologyIn Stock: 849TV06B640J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD214B-T64ALF is determined by strict electrical and mechanical parameter matching across the following criteria:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 64V
• Voltage - Clamping (Max) @ Ipp: 103V
• Current - Peak Pulse (10/1000µs): 5.8A ± tolerance
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

All substitute parts listed maintain these electrical specifications within acceptable engineering tolerances and share identical mechanical packaging, ensuring direct board-level compatibility without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SMBJ64A (Meritek)

The SMBJ64A offers the most direct substitution path. It maintains identical electrical specifications and packaging while offering active product status with substantial inventory availability (23,100 pcs). ROHS3 compliance and MSL 1 rating ensure compatibility with modern manufacturing processes.

Secondary Recommendation: SMBJ64A-HR (Littelfuse Inc.)

The SMBJ64A-HR provides an alternative from an established manufacturer with active product status. Peak pulse current specification (5.9A) is marginally higher than the original part, providing additional design margin. Operating temperature range extends to -65°C, offering broader environmental coverage. Tape & Reel packaging supports automated assembly workflows.

Tertiary Options: TV06B640J-G and TV06B640J-HF (Comchip Technology)

Both Comchip variants maintain full electrical and mechanical compatibility. These parts are suitable for applications where Comchip supply chain integration is preferred. Both carry active product status and ROHS3 compliance.

Selection among these substitutes should be based on supply chain availability, procurement lead times, and established vendor relationships, as all parts meet identical functional requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ64A directly replace CD214B-T64ALF without circuit modification?

A: Yes. The SMBJ64A maintains identical reverse standoff voltage (64V), clamping voltage (103V), peak pulse current (5.83A), and power dissipation (600W) specifications. Both use DO-214AA (SMB) surface mount packaging. No circuit redesign is required.

Q: What is the significance of the obsolete status of CD214B-T64ALF?

A: Obsolete status indicates the part is no longer manufactured by Bourns Inc. and existing inventory will eventually deplete. Active substitute parts ensure long-term design support and procurement continuity.

Q: Are there differences in operating temperature ranges among the substitutes?

A: The original CD214B-T64ALF operates from -55°C to 150°C. The SMBJ64A-HR extends the lower limit to -65°C. For applications requiring the original -55°C minimum, all listed substitutes are suitable. For applications requiring -65°C operation, SMBJ64A-HR is the appropriate choice.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification, matching the original part's environmental compliance status.

Q: What is the difference between SMBJ64A from Meritek and SMBJ64A-HR from Littelfuse?

A: Both maintain identical electrical specifications. The primary differences are manufacturer (Meritek vs. Littelfuse), packaging format (bulk vs. Tape & Reel), inventory availability, and operating temperature range (-55°C to 150°C vs. -65°C to 150°C). Selection depends on supply chain preference and environmental requirements.

Q: Are Comchip TV06B640J variants suitable for high-reliability applications?

A: The TV06B640J-G and TV06B640J-HF maintain all critical electrical and mechanical specifications required for general-purpose transient voltage suppression. Selection should be based on established qualification history within your organization and supply chain requirements.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: Yes. All listed substitutes meet identical functional specifications and packaging requirements. Designs can accommodate any of these parts without modification, provided procurement and supply chain considerations are addressed.