MCH6342-TL-H Equivalent & Substitute Parts

Part Overview

The MCH6342-TL-H is a P-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with 4.5A continuous drain current at 25°C. This device is packaged in a 6-MCPH surface mount configuration with flat leads, designed for applications requiring P-channel switching and load control in compact form factors.

The MCH6342-TL-H carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this component.

Substiute Parts

MCH6342-TL-H

onsemiIn Stock: 1365MCH6342-TL-H Datasheet

Current PartRFQ

MCH6341-TL-W

onsemiIn Stock: 2021MCH6341-TL-W Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCH6342-TL-H is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

• FET Type: P-Channel
• Drain to Source Voltage (Vdss): 30V minimum
• Package / Case: 6-SMD, Flat Leads
• Supplier Device Package: 6-MCPH
• Mounting Type: Surface Mount

Performance Compatibility Criteria:

• Continuous Drain Current (Id): Equal to or greater than 4.5A
• Rds On (Max): Equal to or lower than 73mOhm (at specified Id and Vgs conditions)
• Gate Charge (Qg): Comparable to 8.6nC to ensure drive circuit compatibility
• Input Capacitance (Ciss): Comparable to 650pF to maintain switching characteristics
• Vgs (Max): Equal to or greater than ±10V for gate drive margin
• Operating Temperature: 150°C (TJ) or higher

The MCH6341-TL-W meets all mandatory matching criteria and demonstrates improved performance characteristics in continuous drain current (5A vs. 4.5A) and reduced on-resistance (59mOhm vs. 73mOhm), making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

MCH6341-TL-W as Primary Substitute:

The MCH6341-TL-W is the direct equivalent substitute for the MCH6342-TL-H. Both devices share identical voltage ratings (30V Vdss), identical package configuration (6-MCPH), and identical mounting type (Surface Mount). The MCH6341-TL-W provides superior electrical performance with higher continuous drain current (5A vs. 4.5A) and lower on-resistance (59mOhm vs. 73mOhm).

Compliance and Supply Status:

The MCH6342-TL-H is classified as Obsolete, whereas the MCH6341-TL-W maintains Active product status. The MCH6341-TL-W is RoHS3 Compliant and carries REACH Unaffected designation, matching the regulatory compliance profile of the original part. Current inventory availability for the MCH6341-TL-W is 1990 pieces, ensuring supply continuity for production requirements.

Gate Drive Compatibility:

The MCH6341-TL-W features an expanded Vgs (Max) rating of ±20V compared to the MCH6342-TL-H's ±10V, providing additional margin for gate drive circuit design. Gate charge at 10V is 10nC versus 8.6nC at 4.5V for the original part, representing a minor increase that remains within typical gate driver specifications.

Thermal and Switching Characteristics:

Both devices operate at identical maximum junction temperature (150°C). The MCH6341-TL-W exhibits reduced input capacitance (430pF vs. 650pF), resulting in faster switching transitions and lower gate drive power requirements.

Frequently Asked Questions (FAQ)

Q: Can the MCH6341-TL-W directly replace the MCH6342-TL-H without PCB modifications?

A: Yes. Both devices use identical 6-MCPH package configuration with 6-SMD flat leads. Pin-to-pin compatibility is maintained, and no PCB layout changes are required for mechanical or electrical interface.

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

A: The MCH6341-TL-W provides higher continuous drain current (5A vs. 4.5A), lower on-resistance (59mOhm vs. 73mOhm), lower input capacitance (430pF vs. 650pF), and higher gate voltage rating (±20V vs. ±10V). These represent performance improvements rather than functional incompatibilities.

Q: Is the MCH6341-TL-W suitable for applications originally designed for the MCH6342-TL-H?

A: Yes. The MCH6341-TL-W meets or exceeds all electrical specifications required by the MCH6342-TL-H. The improved performance characteristics make it suitable for all applications within the original design envelope.

Q: What is the significance of the MCH6342-TL-H being Obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. The MCH6341-TL-W, with Active product status, ensures continued availability and manufacturing support for new production and field replacements.

Q: Are there any thermal management differences between these devices?

A: Both devices operate at identical maximum junction temperature (150°C). The MCH6341-TL-W's lower on-resistance (59mOhm vs. 73mOhm) results in reduced power dissipation at equivalent current levels, improving thermal performance.

Q: How do the gate charge specifications affect circuit design?

A: Gate charge at 10V for the MCH6341-TL-W is 10nC versus 8.6nC at 4.5V for the MCH6342-TL-H. This minor increase requires verification that existing gate driver circuits can supply adequate charge within specified switching time requirements. Most standard gate drivers accommodate this variation without modification.

Q: What packaging options are available for the MCH6341-TL-W?

A: The MCH6341-TL-W is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both prototype and high-volume production environments.