CD214A-T120ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T120ALF is a Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 120V reverse standoff voltage with a 193V maximum clamping voltage and 2A peak pulse current capability in a DO-214AC (SMA) package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CD214A-T120ALF

Bourns Inc.In Stock: 1020CD214A-T120ALF Datasheet

Current PartRFQ

SMAJ120A

MDDIn Stock: 1810SMAJ120A Datasheet

DirectRFQ

SMAJ120A

MDDIn Stock: 1810SMAJ120A Datasheet

DirectRFQ

TV04A121J-G

Comchip TechnologyIn Stock: 816TV04A121J-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD214A-T120ALF is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 120V (nominal)
• Voltage - Breakdown: 133V (minimum)
• Voltage - Clamping: 193V (maximum at Ipp)
• Current - Peak Pulse: 2A or greater
• Power - Peak Pulse: 400W
• Package: DO-214AC (SMA)
• Type: Unidirectional Zener diode
• Mounting: Surface Mount

Substitute parts are classified into two categories:

Direct Equivalents: Parts meeting all electrical specifications within the defined tolerances and maintaining identical package configuration.

Similar Equivalents: Parts meeting all critical electrical specifications with minor variations in peak pulse current or operating temperature range, while maintaining package and functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

SMAJ120A (MDD): This part is classified as a direct equivalent. All critical electrical parameters match the CD214A-T120ALF specification. The peak pulse current of 2.1A exceeds the minimum 2A requirement. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The operating temperature range of -50°C to 150°C covers the primary operating window, with a 5°C reduction at the lower bound compared to the original part.

TV04A121J-G (Comchip Technology): This part is classified as a similar equivalent. All critical electrical parameters match the CD214A-T120ALF specification. The peak pulse current of 2.07A exceeds the minimum 2A requirement. The part maintains the full operating temperature range of -55°C to 150°C, matching the original specification. The part is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Both substitute parts are suitable for direct replacement in applications requiring the CD214A-T120ALF electrical and mechanical characteristics. Selection between alternatives should be based on availability, lead time, and procurement preferences.

Frequently Asked Questions (FAQ)

Q: Can SMAJ120A or TV04A121J-G be used as direct replacements for CD214A-T120ALF?

A: Yes. Both parts meet the critical electrical specifications: 120V reverse standoff voltage, 133V minimum breakdown voltage, 193V maximum clamping voltage, and 2A minimum peak pulse current. All three parts use the DO-214AC (SMA) surface-mount package and are unidirectional Zener diodes rated for general-purpose transient voltage suppression.

Q: What is the difference between the substitute parts?

A: SMAJ120A has a peak pulse current of 2.1A and an operating temperature range of -50°C to 150°C. TV04A121J-G has a peak pulse current of 2.07A and an operating temperature range of -55°C to 150°C. Both exceed the 2A minimum requirement. TV04A121J-G maintains the full lower temperature bound of the original part.

Q: Are there any compliance or certification differences?

A: All three parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The original CD214A-T120ALF is listed as REACH Affected. TV04A121J-G is listed as REACH Unaffected. SMAJ120A compliance status follows standard MDD specifications. Verify REACH requirements for your specific application and region.

Q: Does the higher peak pulse current in the substitutes affect circuit performance?

A: No. Higher peak pulse current capability (2.1A or 2.07A versus 2A) provides additional margin and does not degrade circuit performance. The clamping voltage and other critical parameters remain identical.

Q: Are there packaging differences between these parts?

A: All three parts use the DO-214AC (SMA) surface-mount package. SMAJ120A is supplied in Tape & Reel (TR) packaging. TV04A121J-G is supplied in Tape & Reel (TR) packaging. Verify packaging requirements for your assembly process.