CPC3710C N-Channel MOSFET 250V Equivalent & Substitute Parts

Part Overview

The CPC3710C is an N-Channel depletion-mode MOSFET manufactured by IXYS Integrated Circuits Division, rated for 250V drain-to-source voltage with 1.4W maximum power dissipation in a surface-mount SOT-89 package. This device is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

CPC3710C

IXYS Integrated Circuits DivisionIn Stock: 981CPC3710C Datasheet

Current PartRFQ

CPC3703CTR

IXYS Integrated Circuits DivisionIn Stock: 1526CPC3703CTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPC3710C is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Drain to Source Voltage (Vdss): 250V minimum
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• FET Feature: Depletion Mode
• Package / Case: TO-243AA (SOT-89 form factor)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 125°C minimum

Allowable Variation Parameters:

• Rds On (Max): May be lower than 10 Ohm (improved performance)
• Power Dissipation (Max): May be lower than 1.4W (conservative design)
• Current - Continuous Drain (Id): May be higher than specified (enhanced capability)
• Input Capacitance (Ciss): May be equal or lower (acceptable for switching characteristics)

The CPC3703CTR qualifies as a direct substitute based on matching all critical parameters while providing improved electrical characteristics within the allowable variation range.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CPC3710C is classified as obsolete. The CPC3703CTR is classified as active product status, ensuring ongoing manufacturer support, availability, and compliance with current regulatory requirements.

Compliance and Certification: The CPC3703CTR carries RoHS3 compliance certification, whereas the CPC3710C compliance status is not specified. Both parts maintain REACH Unaffected status and EAR99 export classification. The CPC3703CTR's active status and RoHS3 compliance provide assurance for new designs and long-term supply chain stability.

Electrical Performance: The CPC3703CTR demonstrates improved on-resistance characteristics (4 Ohm versus 10 Ohm), resulting in lower conduction losses. This improvement is compatible with applications designed for the CPC3710C, as the lower resistance represents enhanced performance within the same voltage and temperature ratings.

Packaging and Thermal Considerations: Both parts utilize identical TO-243AA (SOT-89) surface-mount packaging with MSL 1 (Unlimited) moisture sensitivity rating. The CPC3703CTR's lower maximum power dissipation (1.1W versus 1.4W) reflects conservative thermal design; applications operating within the CPC3710C's thermal envelope remain compatible.

Selection Basis: Direct substitution of CPC3703CTR for CPC3710C is supported by matching critical electrical parameters, identical package form factor, compatible temperature range, and the substitute's active product status with current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can CPC3703CTR directly replace CPC3710C in existing designs?

A: Yes. The CPC3703CTR meets all critical electrical and mechanical parameters required for CPC3710C substitution: identical 250V Vdss rating, N-Channel depletion-mode MOSFET technology, ±15V Vgs maximum, 350 pF input capacitance, and TO-243AA package form factor. The improved on-resistance (4 Ohm versus 10 Ohm) represents enhanced performance compatible with existing circuit designs.

Q: What is the significance of the lower Rds On value in CPC3703CTR?

A: Lower on-resistance reduces conduction losses and heat generation during device operation. For applications designed around the CPC3710C's 10 Ohm specification, the CPC3703CTR's 4 Ohm rating provides improved efficiency without requiring circuit redesign. This represents a performance upgrade within the same voltage and temperature operating envelope.

Q: Are the package dimensions identical between CPC3710C and CPC3703CTR?

A: Yes. Both devices use the TO-243AA package designation, which is the physical form factor for SOT-89 surface-mount components. Pin configuration, lead spacing, and PCB footprint requirements are identical, enabling direct board-level substitution without layout modifications.

Q: Why is CPC3703CTR classified as active while CPC3710C is obsolete?

A: Product status reflects manufacturer support and availability. The CPC3703CTR's active status indicates ongoing production, technical support, and compliance with current regulatory standards including RoHS3. The CPC3710C's obsolete status indicates discontinued production. Substitution to CPC3703CTR ensures access to current inventory and manufacturer support.

Q: What is the impact of the lower power dissipation rating in CPC3703CTR?

A: The CPC3703CTR's 1.1W maximum power dissipation (versus 1.4W for CPC3710C) reflects conservative thermal design. Applications operating within the CPC3710C's thermal specifications remain compatible. Thermal design margins may improve with CPC3703CTR due to lower dissipation characteristics.

Q: Are there any compliance differences between these parts?

A: The CPC3703CTR carries RoHS3 compliance certification, whereas CPC3710C compliance status is not specified. Both maintain REACH Unaffected status. For applications requiring RoHS3 compliance, CPC3703CTR provides documented certification. Both parts carry EAR99 export classification and identical HTSUS codes.

Q: What is the continuous drain current rating for each part?

A: The CPC3710C does not specify continuous drain current (Id @ 25°C). The CPC3703CTR specifies 360mA continuous drain current at 25°C ambient temperature. This specification in the substitute provides design clarity for current-limited applications.

Q: Can CPC3710C be used as a substitute for CPC3703CTR?

A: No. While both parts share identical voltage and package specifications, the CPC3710C's obsolete status and unspecified compliance certifications make it unsuitable for new designs or applications requiring active product support. Substitution direction is CPC3703CTR for CPC3710C only.