CPDT-5V0 Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The CPDT-5V0 is a bidirectional Zener transient voltage suppressor diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5V reverse standoff voltage with 15V maximum clamping voltage and 5A peak pulse current capability in a SOT-23-3 package.

The CPDT-5V0 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and field replacements.

Substiute Parts

CPDT-5V0

Comchip TechnologyIn Stock: 3107CPDT-5V0 Datasheet

Current PartRFQ

CPDT-5V0-HF

Comchip TechnologyIn Stock: 3125CPDT-5V0-HF Datasheet

DirectRFQ

ESDONCAN1LT1G

onsemiIn Stock: 71082ESDONCAN1LT1G Datasheet

MFR RecommendedRFQ

ESDONCAN1LT3G

onsemiIn Stock: 5377ESDONCAN1LT3G Datasheet

MFR RecommendedRFQ

NUP2115LT1G

onsemiIn Stock: 2960NUP2115LT1G Datasheet

MFR RecommendedRFQ

NUP2115LT3G

onsemiIn Stock: 15249NUP2115LT3G Datasheet

MFR RecommendedRFQ

SESDONCAN1LT1G

onsemiIn Stock: 25823SESDONCAN1LT1G Datasheet

MFR RecommendedRFQ

SESDONCAN1LT3G

onsemiIn Stock: 9103SESDONCAN1LT3G Datasheet

MFR RecommendedRFQ

SZNUP2115LT1G

onsemiIn Stock: 3226SZNUP2115LT1G Datasheet

MFR RecommendedRFQ

SZNUP2115LT3G

onsemiIn Stock: 10505SZNUP2115LT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPDT-5V0 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Bidirectional Zener TVS diode configuration with 2 channels
• SOT-23-3 surface-mount package (TO-236-3, SC-59)
• Reverse standoff voltage and clamping voltage ratings
• Peak pulse current and power dissipation capability
• RoHS3 compliance and MSL rating

Substitution Categories:

Direct Equivalent (Same Electrical Specifications): CPDT-5V0-HF is a direct equivalent manufactured by Comchip Technology with identical electrical parameters. This part differs only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Functional Substitutes (Different Voltage Ratings): Parts including ESDONCAN1LT1G, ESDONCAN1LT3G, NUP2115LT1G, NUP2115LT3G, SESDONCAN1LT1G, SESDONCAN1LT3G, SZNUP2115LT1G, and SZNUP2115LT3G are onsemi-manufactured TVS diodes in the same SOT-23-3 package. These parts operate at higher voltage ratings (24V reverse standoff, 50V clamping, 3A peak pulse) and are suitable for applications requiring higher voltage protection levels. These substitutes are active products with automotive-grade certifications (AEC-Q101) where applicable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): CPDT-5V0-HF is the recommended direct substitute. It maintains all electrical specifications of the original CPDT-5V0 while offering active product status and availability. The only difference is packaging format (Tape & Reel vs. bulk). This part is suitable for applications requiring the exact 5V protection level without modification to circuit design.

For Higher Voltage Protection Applications: onsemi TVS diodes (ESDONCAN1LT1G, ESDONCAN1LT3G, NUP2115LT1G, NUP2115LT3G, SESDONCAN1LT1G, SESDONCAN1LT3G, SZNUP2115LT1G, SZNUP2115LT3G) operate at 24V reverse standoff with 50V clamping voltage. These parts are suitable for circuits requiring higher voltage transient protection. Most onsemi options carry automotive-grade certification (AEC-Q101) and are actively produced, ensuring long-term availability.

Product Status Considerations:

• CPDT-5V0-HF: Active status ensures continued availability and manufacturing support
• ESDONCAN1LT1G, ESDONCAN1LT3G, NUP2115LT1G, NUP2115LT3G, SESDONCAN1LT1G, SESDONCAN1LT3G, SZNUP2115LT1G: Active status
• SZNUP2115LT3G: Last Time Buy status indicates limited future availability; transition to alternative active parts is recommended for new designs

Compliance: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CPDT-5V0-HF be used as a direct replacement for CPDT-5V0? A: Yes. CPDT-5V0-HF is electrically identical to CPDT-5V0, with the same 5V reverse standoff voltage, 15V clamping voltage, and 5A peak pulse current. The primary difference is packaging format (Tape & Reel) and active product status. No circuit modifications are required.

Q: What is the difference between the 5V CPDT series and the 24V onsemi TVS diodes? A: The CPDT-5V0 operates at 5V reverse standoff with 15V maximum clamping. The onsemi substitutes (ESDONCAN1, NUP2115, SESDONCAN1, SZNUP2115 series) operate at 24V reverse standoff with 50V clamping voltage. These higher-rated parts are suitable for circuits requiring protection against larger transient voltages. Selection depends on the actual transient voltage levels in your application.

Q: Are all substitute parts available in SOT-23-3 package? A: Yes. All listed substitute parts are manufactured in the SOT-23-3 surface-mount package (also designated TO-236-3 or SC-59), ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: Which onsemi TVS diode should I select for new automotive designs? A: For new automotive applications, select from the actively produced parts with AEC-Q101 qualification: NUP2115LT1G, NUP2115LT3G, SESDONCAN1LT1G, SESDONCAN1LT3G, SZNUP2115LT1G, or ESDONCAN1LT1G/ESDONCAN1LT3G. Avoid SZNUP2115LT3G (Last Time Buy status) for new designs.

Q: What does "Bidirectional Channels: 2" mean? A: This indicates the TVS diode provides protection on two signal lines within a single SOT-23-3 package. The diode protects against transients on both positive and negative voltage excursions.

Q: Are there differences in peak pulse power rating between substitutes? A: Yes. CPDT-5V0 and CPDT-5V0-HF are rated at 75W peak pulse power. onsemi parts NUP2115LT1G, NUP2115LT3G, SZNUP2115LT1G, and SZNUP2115LT3G are rated at 200W peak pulse power, providing higher energy dissipation capability. ESDONCAN1 and SESDONCAN1 series do not specify peak pulse power in the provided data.

Q: Can I use a higher-voltage TVS diode in place of the CPDT-5V0? A: Higher-voltage TVS diodes (24V standoff, 50V clamping) will not clamp transients at the same voltage level as the CPDT-5V0. Use higher-voltage substitutes only if your circuit design accommodates the higher clamping voltage. For applications requiring 5V protection, use CPDT-5V0-HF or equivalent 5V-rated parts.