STP6N65M2 Equivalent & Substitute Parts

Part Overview

The STP6N65M2 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 650V drain-to-source voltage with 4A continuous drain current at 25°C. This device is housed in a TO-220-3 through-hole package and is part of the MDmesh™ series. The part is classified as Obsolete, necessitating identification of equivalent alternatives for ongoing applications and new designs. Substitute parts must maintain functional compatibility across voltage, current, and thermal specifications while preserving the through-hole TO-220 package format.

Substiute Parts

STP6N65M2

STMicroelectronicsIn Stock: 1468STP6N65M2 Datasheet

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AOT8N80L

Alpha & Omega Semiconductor Inc.In Stock: 3478AOT8N80L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STP6N65M2 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 650V
• Continuous Drain Current (Id) must equal or exceed 4A at 25°C
• Package type must be TO-220-3 through-hole configuration
• Operating temperature range must encompass -55°C to 150°C
• RoHS3 compliance and REACH unaffected status must be maintained

Secondary Compatibility Parameters:

• Gate drive voltage compatibility at 10V
• On-state resistance (Rds On) characteristics
• Gate threshold voltage (Vgs(th)) specifications
• Input capacitance (Ciss) and gate charge (Qg) for circuit design integration

The AOT8N80L from Alpha & Omega Semiconductor Inc. meets the primary substitution criteria with enhanced electrical ratings: 800V Vdss (exceeds 650V requirement), 7.4A continuous drain current (exceeds 4A requirement), and identical TO-220-3 package configuration. Both devices maintain RoHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The AOT8N80L serves as a functional substitute for the STP6N65M2 in applications requiring equivalent or enhanced performance. The substitute part exceeds the minimum electrical requirements: 800V Vdss provides 150V margin above the original 650V specification, and 7.4A continuous drain current provides 3.4A margin above the original 4A specification. Both devices maintain identical operating temperature ranges (-55°C to 150°C) and package configurations (TO-220-3 through-hole).

Compliance Considerations:

Both the main part and substitute maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applications subject to these requirements. The STP6N65M2 is classified as Obsolete, while the AOT8N80L is classified as Not For New Designs. For new design implementations, alternative parts with Active product status should be evaluated from the extended substitute list provided by the manufacturer.

Electrical Performance Trade-offs:

The AOT8N80L exhibits higher input capacitance (1650 pF @ 25V versus 226 pF @ 100V) and higher gate charge (32 nC @ 10V versus 9.8 nC @ 10V). These parameters affect gate drive circuit requirements and switching speed characteristics. On-state resistance at the substitute's rated current (1.63 Ohm @ 4A, 10V) is comparable to the main part (1.35 Ohm @ 2A, 10V), indicating acceptable conduction losses for equivalent current levels.

Frequently Asked Questions (FAQ)

Q: Can the AOT8N80L directly replace the STP6N65M2 in existing circuit designs?

A: The AOT8N80L meets the primary electrical and mechanical substitution criteria: 800V Vdss exceeds the 650V requirement, 7.4A continuous drain current exceeds the 4A requirement, and the TO-220-3 package configuration is identical. However, the higher gate charge (32 nC versus 9.8 nC) and input capacitance (1650 pF versus 226 pF) require verification that the gate drive circuit can accommodate these increased capacitive loads without exceeding maximum gate voltage or introducing unacceptable switching delays.

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

A: The STP6N65M2 is classified as Obsolete, indicating it is no longer manufactured and existing inventory is limited. The AOT8N80L is classified as Not For New Designs, indicating it remains available but is not recommended for new product development. For applications requiring long-term component availability and support, evaluation of Active status alternatives from the extended substitute list is recommended.

Q: Are there package alternatives to TO-220-3 for this application?

A: The substitution criteria specified for the STP6N65M2 require TO-220-3 through-hole package configuration. The AOT8N80L maintains this package format. Alternative package types (such as surface-mount configurations) fall outside the defined substitution parameters and require separate evaluation.

Q: How do the on-state resistance specifications compare between the main part and substitute?

A: The STP6N65M2 specifies Rds On (Max) of 1.35 Ohm at 2A and 10V gate voltage. The AOT8N80L specifies Rds On (Max) of 1.63 Ohm at 4A and 10V gate voltage. At equivalent current levels, the on-state resistance characteristics are comparable, indicating acceptable conduction losses for power dissipation calculations.

Q: What circuit design parameters require adjustment when substituting the AOT8N80L?

A: The gate drive circuit must accommodate the higher gate charge (32 nC versus 9.8 nC) and input capacitance (1650 pF versus 226 pF) of the AOT8N80L. These parameters affect the gate drive current requirements and switching speed. The maximum gate voltage specification of ±30V for the AOT8N80L (versus ±25V for the STP6N65M2) provides additional margin for gate drive circuits operating at ±25V.

Q: Is RoHS3 compliance maintained with the AOT8N80L substitute?

A: Yes, both the STP6N65M2 and AOT8N80L maintain RoHS3 compliance and REACH unaffected status. Regulatory requirements for restricted substances and environmental compliance are satisfied by the substitute part.