CPDT5-5V0U Equivalent & Substitute Parts

Part Overview

The CPDT5-5V0U is a Transient Voltage Suppressor (TVS) diode manufactured by Comchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5V reverse standoff voltage with a 10V maximum clamping voltage and 8A peak pulse current capability in an SOT-23-5 package.

The CPDT5-5V0U is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode.

Substiute Parts

CPDT5-5V0U

Comchip TechnologyIn Stock: 6411CPDT5-5V0U Datasheet

Current PartRFQ

CPDT5-5V0U-HF

Comchip TechnologyIn Stock: 9443CPDT5-5V0U-HF Datasheet

DirectRFQ

ESDA6V1SC5

STMicroelectronicsIn Stock: 20197ESDA6V1SC5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CPDT5-5V0U are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Unidirectional Channels: 4
• Voltage - Reverse Standoff (Typ): 5V (or within acceptable tolerance)
• Voltage - Breakdown (Min): 6.1V
• Mounting Type: Surface Mount
• Package / Case: SC-74A, SOT-753 (SOT-23-5)
• Applications: General Purpose

Acceptable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Equal or lower values acceptable
• Current - Peak Pulse: Equal or higher values acceptable
• Power - Peak Pulse: Equal or higher values acceptable
• Product Status: Active status preferred for ongoing availability

Substitute parts must maintain electrical performance within the specified voltage and current ranges while preserving the same physical package footprint for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

CPDT5-5V0U-HF (Comchip Technology)

This direct variant from the original manufacturer provides identical electrical specifications to the CPDT5-5V0U with the primary distinction being active product status and Tape & Reel packaging. The CPDT5-5V0U-HF maintains all critical parameters including 5V reverse standoff voltage, 6.1V minimum breakdown voltage, 10V maximum clamping voltage, and 8A peak pulse current. ROHS3 compliance and MSL 1 rating are preserved. This substitute is the preferred choice for applications requiring exact electrical performance matching and manufacturer continuity.

ESDA6V1SC5 (STMicroelectronics)

The ESDA6V1SC5 is a manufacturer-recommended alternative from STMicroelectronics within the ESDA TRANSIL™ series. This part maintains the same SOT-23-5 package footprint and four unidirectional channels. The reverse standoff voltage is 5.25V, representing a 0.25V increase from the original specification, with matching 6.1V minimum breakdown voltage. The ESDA6V1SC5 offers significantly higher peak pulse power dissipation at 400W compared to 80W, providing enhanced transient protection capability. ROHS3 compliance and MSL 1 rating are maintained. This substitute is suitable for applications where increased power handling is beneficial and the slightly elevated standoff voltage is acceptable within circuit design margins.

Both substitutes are ROHS3 compliant and carry MSL 1 ratings, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CPDT5-5V0U-HF be used as a direct replacement for CPDT5-5V0U?

A: Yes. The CPDT5-5V0U-HF is electrically and mechanically identical to the CPDT5-5V0U. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard). Both parts share identical voltage ratings, current ratings, and SOT-23-5 package specifications, enabling direct board-level substitution.

Q: What is the key difference between CPDT5-5V0U-HF and ESDA6V1SC5?

A: The CPDT5-5V0U-HF maintains exact electrical specifications of the original part (5V standoff, 10V clamping, 8A peak pulse, 80W power). The ESDA6V1SC5 features a 5.25V standoff voltage and significantly higher power dissipation capability (400W). Both share the same SOT-23-5 package and four-channel configuration. Selection depends on whether exact parameter matching or enhanced power handling is prioritized.

Q: Is the 0.25V difference in reverse standoff voltage between CPDT5-5V0U and ESDA6V1SC5 significant?

A: The 0.25V difference (5V vs. 5.25V) represents a 5% increase in standoff voltage. This variation is within typical circuit design tolerances for general-purpose TVS applications. Circuit designers must confirm that the higher standoff voltage does not compromise protection thresholds in their specific application.

Q: Are all three parts RoHS compliant?

A: Yes. CPDT5-5V0U, CPDT5-5V0U-HF, and ESDA6V1SC5 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting standard environmental and manufacturing requirements.

Q: Which substitute should be selected for new designs?

A: For new designs, CPDT5-5V0U-HF is recommended due to active product status and exact parameter matching. ESDA6V1SC5 is suitable when enhanced power dissipation capability is required or when STMicroelectronics supply chain preference is established.

Q: Can these parts be used interchangeably in existing assemblies?

A: CPDT5-5V0U-HF provides direct interchangeability. ESDA6V1SC5 requires circuit design review to confirm that the 5.25V standoff voltage and 400W power rating are compatible with the intended application protection scheme.