CD214B-T14ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T14ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. The device features a 14V reverse standoff voltage with 23.2V maximum clamping voltage and 25.8A peak pulse current capability in the DO-214AA (SMB) package format. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

CD214B-T14ALF

Bourns Inc.In Stock: 993CD214B-T14ALF Datasheet

Current PartRFQ

SMBJ14A

MDDIn Stock: 17283SMBJ14A Datasheet

DirectRFQ

SMBJ14A

MDDIn Stock: 17283SMBJ14A Datasheet

DirectRFQ

SMBJ14A

MDDIn Stock: 17283SMBJ14A Datasheet

DirectRFQ

SMBJ14A-TP

Micro Commercial CoIn Stock: 40456SMBJ14A-TP Datasheet

SimilarRFQ

SZ1SMB12AT3G

Littelfuse Inc.In Stock: 6888SZ1SMB12AT3G Datasheet

SimilarRFQ

TPSMB15A

Littelfuse Inc.In Stock: 23380TPSMB15A Datasheet

SimilarRFQ

TV06B140J-G

Comchip TechnologyIn Stock: 747TV06B140J-G Datasheet

SimilarRFQ

TV06B140J-HF

Comchip TechnologyIn Stock: 673TV06B140J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD214B-T14ALF is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 25.8A ± tolerance
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

Substitute parts are classified into two categories:

Direct Equivalents: Parts with identical electrical specifications (14V standoff, 23.2V clamping, 25.8-25.9A peak pulse) in active production status.

Similar Alternatives: Parts with comparable but not identical electrical specifications (voltage or current variations within functional range) that may require circuit-level evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Choices):

SMBJ14A (MDD), SMBJ14A-TP (Micro Commercial Co), TV06B140J-G (Comchip Technology), and TV06B140J-HF (Comchip Technology) are direct electrical equivalents with identical 14V standoff, 23.2V clamping, and 25.8-25.9A peak pulse specifications. All are in active production status with ROHS3 compliance and MSL 1 rating. These parts are pin-compatible and functionally interchangeable with the obsolete CD214B-T14ALF in DO-214AA (SMB) package format.

Similar Alternatives (Conditional Use):

SZ1SMB12AT3G (Littelfuse) and TPSMB15A (Littelfuse) offer lower voltage ratings (12V and 12.8V standoff respectively) with higher peak pulse currents (30.2A and 28.8A). These parts are suitable only for applications where the lower voltage threshold and higher current capability are compatible with circuit requirements. Both carry automotive-grade qualification (AEC-Q101) and extended temperature ranges (-65°C ~ 150°C or -65°C ~ 175°C).

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the original CD214B-T14ALF specifications. Selection should prioritize active production status parts to ensure long-term supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can SMBJ14A (MDD) directly replace CD214B-T14ALF?

A: Yes. SMBJ14A from MDD is a direct electrical equivalent with identical 14V reverse standoff voltage, 23.2V clamping voltage, and 25.9A peak pulse current. Both use DO-214AA (SMB) package format and are pin-compatible. The part is in active production status.

Q: What is the difference between SMBJ14A-TP and SMBJ14A?

A: SMBJ14A-TP includes tape and reel (TR) packaging, while SMBJ14A specifications do not specify packaging format in the provided data. Both are electrically identical with 14V standoff and 23.2V clamping specifications. Selection depends on procurement and assembly requirements.

Q: Why are SZ1SMB12AT3G and TPSMB15A listed as similar alternatives rather than direct equivalents?

A: These parts have lower voltage ratings (12V and 12.8V standoff respectively) compared to the 14V specification of CD214B-T14ALF. While they share the same DO-214AA (SMB) package and general TVS diode function, the voltage difference requires circuit-level evaluation to confirm compatibility with the original application's overvoltage protection threshold.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the environmental and regulatory requirements of the original CD214B-T14ALF.

Q: What is the operating temperature range difference between substitute parts?

A: The original CD214B-T14ALF operates from -55°C to 150°C. SMBJ14A-TP extends to -55°C ~ 175°C. Littelfuse automotive-grade parts (SZ1SMB12AT3G and TPSMB15A) operate from -65°C to 150°C or 175°C. Selection should match the thermal requirements of the target application.

Q: Can I use TV06B140J-G or TV06B140J-HF as drop-in replacements?

A: Yes. Both Comchip Technology parts (TV06B140J-G and TV06B140J-HF) are direct electrical equivalents with 14V standoff, 23.2V clamping, and 25.86A peak pulse current. Both use DO-214AA (SMB) package format and are functionally interchangeable with CD214B-T14ALF.