CPH6501-TL-E Equivalent & Substitute Parts

Part Overview

The CPH6501-TL-E is a Bipolar (BJT) Transistor Array featuring a dual NPN configuration manufactured by onsemi. This surface mount component is rated for 30V collector-emitter breakdown voltage with a maximum collector current of 1.5A and operates at frequencies up to 500MHz. The device is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

CPH6501-TL-E

onsemiIn Stock: 3440CPH6501-TL-E Datasheet

Current PartRFQ

QSX8TR

Rohm SemiconductorIn Stock: 3166QSX8TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CPH6501-TL-E is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor configuration: Dual NPN array
• Voltage rating: Minimum 30V collector-emitter breakdown voltage
• Current rating: Sufficient for application requirements
• Power dissipation: Adequate thermal capability
• Frequency response: Transition frequency performance

Mechanical Compatibility Criteria:

• Surface mount packaging in SOT-23-6 or TSOT-23-6 form factor
• Pin configuration compatibility with 6-pin package standards
• Moisture sensitivity level appropriate for storage and handling

The QSX8TR from Rohm Semiconductor meets these substitution criteria through equivalent package geometry, matching voltage ratings, and compatible dual NPN topology, despite variations in maximum current and frequency specifications.

Parameter Comparison

Engineering Selection Recommendations

CPH6501-TL-E (onsemi): This component is classified as obsolete and carries REACH Unaffected status with EAR99 export classification. While 3400 units remain in current inventory, long-term availability cannot be assured for new production or design revisions.

QSX8TR (Rohm Semiconductor): This component maintains active product status with ROHS3 compliance and REACH Unaffected designation. The device is available in 3066 units and provides a viable alternative for applications where the specified electrical parameters are compatible with design requirements. The QSX8TR operates at a lower maximum collector current (1A versus 1.5A) and transition frequency (320MHz versus 500MHz), requiring circuit-level evaluation to confirm suitability for specific application demands.

Selection between these components depends on whether the application circuit can operate within the electrical constraints of the QSX8TR, particularly regarding maximum current handling and frequency response requirements.

Frequently Asked Questions (FAQ)

Q: Can the QSX8TR directly replace the CPH6501-TL-E in all applications?

A: Direct replacement is possible only when the application circuit operates within the QSX8TR electrical specifications. The QSX8TR has a lower maximum collector current (1A versus 1.5A) and transition frequency (320MHz versus 500MHz). Applications requiring the full 1.5A current capability or 500MHz frequency response require circuit redesign or alternative component selection.

Q: Are the package dimensions identical between CPH6501-TL-E and QSX8TR?

A: Both components use SOT-23-6 Thin and TSOT-23-6 package designations, providing mechanical compatibility for PCB layout and assembly processes. Pin configuration remains consistent across both devices.

Q: What is the significance of the product status difference?

A: The CPH6501-TL-E is classified as obsolete, indicating discontinued manufacturing and limited inventory availability. The QSX8TR maintains active status, ensuring ongoing availability and manufacturing support from Rohm Semiconductor.

Q: How do the saturation voltage characteristics compare?

A: The CPH6501-TL-E exhibits lower saturation voltage (225mV at specified conditions) compared to the QSX8TR (350mV at specified conditions). Applications sensitive to saturation voltage performance require evaluation of this parameter difference.

Q: Are there compliance or regulatory differences between these components?

A: Both components carry REACH Unaffected status and EAR99 export classification. The QSX8TR includes ROHS3 compliance certification, while the CPH6501-TL-E does not specify RoHS status. Both devices have MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the current gain difference between these transistors?

A: The QSX8TR demonstrates higher DC current gain (270 minimum at 100mA, 2V) compared to the CPH6501-TL-E (200 minimum at 100mA, 2V). This difference may affect biasing circuit design and overall circuit performance.