CPH6445-TL-E Equivalent & Substitute Parts

Part Overview

The CPH6445-TL-E is an N-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with a continuous drain current of 3.5A at 25°C. This device is packaged in a 6-CPH (SOT-23-6) surface mount configuration and is classified as obsolete. Due to its obsolete product status, equivalent substitute parts with active availability are necessary for new designs and ongoing production requirements. The substitute part maintains electrical compatibility while offering improved performance characteristics and active product support.

Substiute Parts

CPH6445-TL-E

onsemiIn Stock: 1985CPH6445-TL-E Datasheet

Current PartRFQ

FDC5661N-F085

onsemiIn Stock: 17178FDC5661N-F085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPH6445-TL-E is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 60V
• FET Type: Must be N-Channel
• Technology: Must be MOSFET (Metal Oxide)
• Continuous Drain Current (Id): Must meet or exceed 3.5A at 25°C
• Package Type: Must be SOT-23-6 or equivalent surface mount configuration

Compliance Criteria:

• RoHS3 Compliance required
• Moisture Sensitivity Level 1 (Unlimited) required
• Surface mount technology required

The substitute part FDC5661N-F085 satisfies all substitution criteria. It maintains the same voltage rating (60V), exceeds the current rating (4.3A vs. 3.5A), uses identical package technology (SOT-23-6), and meets all compliance requirements. The substitute part is manufactured by onsemi and carries active product status with automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FDC5661N-F085

The FDC5661N-F085 is the manufacturer-recommended substitute for the CPH6445-TL-E. Selection of this part is based on the following engineering factors:

Product Status: The CPH6445-TL-E is classified as obsolete, while the FDC5661N-F085 maintains active product status with full manufacturing support and availability.

Electrical Performance: The FDC5661N-F085 provides superior electrical characteristics within the same voltage class. The continuous drain current rating of 4.3A exceeds the original 3.5A specification, and the on-resistance (Rds On) of 47 mOhm at 4.3A, 10V is significantly lower than the original 117 mOhm at 1.5A, 10V, resulting in reduced power dissipation and improved thermal performance.

Compliance and Certification: Both parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). The FDC5661N-F085 carries automotive-grade qualification (AEC-Q101) and is part of the PowerTrench® series, indicating enhanced reliability and process maturity.

Package Compatibility: Both devices use SOT-23-6 surface mount packaging. The FDC5661N-F085 is available in SuperSOT™-6 configuration, which is mechanically and electrically compatible with the original package footprint.

Inventory and Supply: The FDC5661N-F085 has significantly higher inventory availability (17,100 pieces) compared to the obsolete CPH6445-TL-E (1,916 pieces), ensuring long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the FDC5661N-F085 be used as a direct replacement for the CPH6445-TL-E?

A: Yes. The FDC5661N-F085 is the manufacturer-recommended substitute and maintains electrical and mechanical compatibility. Both devices are N-Channel MOSFETs with 60V Vdss rating, SOT-23-6 packaging, and identical compliance certifications. The substitute part exceeds the original current and performance specifications.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance characteristics. The CPH6445-TL-E is obsolete, while the FDC5661N-F085 is active. The FDC5661N-F085 provides higher continuous drain current (4.3A vs. 3.5A), lower on-resistance (47 mOhm vs. 117 mOhm), and automotive-grade qualification. Gate charge and input capacitance are higher in the substitute part.

Q: Are the packages physically identical?

A: Both parts use SOT-23-6 surface mount packaging. The FDC5661N-F085 is available in SuperSOT™-6 and TSOT-23-6 variants, which are mechanically compatible with the original 6-CPH package. PCB footprints are identical.

Q: Does the higher gate charge of the FDC5661N-F085 affect circuit design?

A: Gate charge is provided as a specification parameter. The FDC5661N-F085 has a gate charge of 19 nC at 10V compared to 6.8 nC for the original part. Circuit designs must account for this parameter during gate driver selection and timing calculations.

Q: Are both parts RoHS compliant?

A: Yes. Both the CPH6445-TL-E and FDC5661N-F085 are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: What is the operating temperature range for the substitute part?

A: The FDC5661N-F085 operates from -55°C to 150°C (TJ), providing a wide operating temperature range suitable for industrial and automotive applications.

Q: Is the FDC5661N-F085 suitable for automotive applications?

A: Yes. The FDC5661N-F085 carries AEC-Q101 automotive qualification, indicating compliance with automotive reliability and quality standards.