CD214B-T11ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T11ALF is a Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., classified as a unidirectional Zener-type device in the DO-214AA (SMB) surface mount package. This component is rated for 11V reverse standoff voltage with an 18.2V maximum clamping voltage and 33A peak pulse current capacity, designed for general-purpose transient voltage suppression applications. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements.

Substiute Parts

CD214B-T11ALF

Bourns Inc.In Stock: 703CD214B-T11ALF Datasheet

Current PartRFQ

SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

DirectRFQ

SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

DirectRFQ

SMBJ11A

MeritekIn Stock: 50169SMBJ11A Datasheet

DirectRFQ

SMBJ10A-HR

LittelfuseIn Stock: 702SMBJ10A-HR Datasheet

SimilarRFQ

SMBJ11A-TP

Micro Commercial CoIn Stock: 3671SMBJ11A-TP Datasheet

SimilarRFQ

TV06B110J-G

Comchip TechnologyIn Stock: 809TV06B110J-G Datasheet

SimilarRFQ

TV06B110J-HF

Comchip TechnologyIn Stock: 771TV06B110J-HF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD214B-T11ALF is determined by strict alignment of the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 11V
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Current - Peak Pulse (10/1000µs): 33A (±tolerance acceptable)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

Direct Equivalents meet all primary criteria with identical electrical specifications and active product status.

Similar Substitutes maintain the same package, mounting type, and core voltage/current ratings within acceptable engineering tolerances but may have minor variations in peak pulse current or operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred for Replacement):

SMBJ11A (Meritek), SMBJ11A-TP (Micro Commercial Co), TV06B110J-G (Comchip Technology), and TV06B110J-HF (Comchip Technology) are direct functional equivalents to the CD214B-T11ALF. These parts maintain identical voltage ratings (11V reverse standoff, 18.2V clamping), equivalent peak pulse current specifications (32.97A to 33A), and identical power dissipation (600W). All substitute parts are active products with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and regulatory compliance. Selection among these direct equivalents should be based on inventory availability, lead time, and packaging requirements (Tape & Reel format).

Similar Substitute (Limited Application):

SMBJ10A-HR (Littelfuse) operates at a lower reverse standoff voltage (10V) and lower clamping voltage (17V) compared to the CD214B-T11ALF (11V standoff, 18.2V clamping). This part is suitable only for applications where the lower voltage ratings are acceptable and provide adequate protection margins. The higher peak pulse current (35.3A) and extended lower operating temperature range (-65°C) may offer advantages in specific thermal or current-handling scenarios. This substitute should be selected only when circuit design permits the reduced voltage specifications.

All recommended substitutes are ROHS3 compliant, carry MSL 1 moisture sensitivity rating, and are available in surface mount DO-214AA (SMB) packaging compatible with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can SMBJ11A replace CD214B-T11ALF directly?

A: Yes. SMBJ11A (Meritek) is a direct equivalent with identical voltage ratings (11V reverse standoff, 18.2V clamping), equivalent peak pulse current (32.97A), and matching 600W power dissipation. Both are ROHS3 compliant with MSL 1 rating and use the same DO-214AA (SMB) package. No circuit modifications are required.

Q: What is the difference between SMBJ11A-TP and TV06B110J-G?

A: Both parts are direct equivalents with identical electrical specifications (11V standoff, 18.2V clamping, 32.97A to 33A peak pulse current, 600W power). The primary differences are manufacturer (Micro Commercial Co vs. Comchip Technology) and operating temperature range (SMBJ11A-TP extends to 175°C vs. TV06B110J-G with unspecified range). Selection depends on inventory availability and thermal requirements of the application.

Q: Why is SMBJ10A-HR listed as a similar substitute rather than a direct equivalent?

A: SMBJ10A-HR has lower voltage specifications (10V reverse standoff vs. 11V, 17V clamping vs. 18.2V). While it maintains the same package and 600W power rating, the reduced voltage protection threshold makes it unsuitable for circuits designed around the 11V/18.2V specifications of the CD214B-T11ALF. Use SMBJ10A-HR only if circuit design analysis confirms adequate protection at the lower voltage ratings.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All recommended substitutes (SMBJ11A, SMBJ11A-TP, TV06B110J-G, TV06B110J-HF, and SMBJ10A-HR) are supplied in Tape & Reel (TR) format, suitable for automated assembly processes. This packaging format is compatible with standard pick-and-place equipment and reflow soldering workflows.

Q: Do substitute parts meet the same compliance standards as the original CD214B-T11ALF?

A: Yes. All direct equivalent substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and EAR99 export classification. These certifications ensure regulatory compliance and long-term reliability equivalent to the original part.

Q: What is the inventory status of substitute parts?

A: SMBJ11A (Meritek) has the highest inventory availability at 50,100 pieces. SMBJ11A-TP (MCC) has 3,634 pieces available. TV06B110J-G and TV06B110J-HF (Comchip) have 740 and 733 pieces respectively. SMBJ10A-HR (Littelfuse) has 690 pieces. Availability should be confirmed with suppliers for production requirements.