2N6040 Equivalent & Substitute Parts

Part Overview

The 2N6040 is a PNP Darlington bipolar junction transistor manufactured by onsemi, designed for through-hole mounting in TO-220 packaging. This component is rated for 60 V collector-emitter breakdown voltage, 8 A maximum collector current, and 75 W maximum power dissipation, with an operating temperature range of -65°C to 150°C. The 2N6040 is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility across critical parameters including voltage rating, current capacity, and thermal characteristics.

Substiute Parts

2N6040

onsemiIn Stock: 14542N6040 Datasheet

Current PartRFQ

TIP105

NTE Electronics, IncIn Stock: 44255TIP105 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2N6040 are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Electrical Parameters:

• Transistor type: PNP - Darlington configuration
• Maximum collector current: 8 A minimum
• Maximum collector-emitter breakdown voltage: 60 V minimum
• DC current gain (hFE): 1000 minimum at specified operating point
• Operating temperature range: -65°C to 150°C minimum

Mechanical Parameters:

• Package type: TO-220-3
• Mounting configuration: Through Hole

The TIP105 meets all specified electrical and mechanical requirements for direct substitution with the 2N6040. Both components share identical maximum collector current (8 A), collector-emitter breakdown voltage (60 V), DC current gain minimum (1000), operating temperature range (-65°C to 150°C), and package configuration (TO-220-3 through-hole).

Parameter Comparison

Engineering Selection Recommendations

The TIP105 is a direct functional equivalent to the 2N6040 for applications requiring PNP Darlington transistors with 60 V, 8 A specifications in TO-220-3 through-hole packaging. The TIP105 is classified as an active product with current manufacturing availability, whereas the 2N6040 is obsolete. Both components share identical maximum electrical ratings for collector current, collector-emitter breakdown voltage, and operating temperature range.

The TIP105 provides marginal improvements in maximum power dissipation (80 W versus 75 W) and includes specified transition frequency (4 MHz), which was not provided for the 2N6040. The TIP105 exhibits slightly higher collector cutoff current (50 µA versus 20 µA) and higher saturation voltage at maximum rated current (2.5 V versus 2 V), which may require circuit-level evaluation in applications with tight saturation or leakage specifications.

Both components maintain identical RoHS non-compliance status and ECCN classification (EAR99). Selection of the TIP105 is appropriate for new designs and production transitions from the obsolete 2N6040, provided circuit performance tolerates the specified parameter variations.

Frequently Asked Questions (FAQ)

Q: Can the TIP105 directly replace the 2N6040 in existing circuit designs?

A: The TIP105 is electrically and mechanically compatible with the 2N6040 across all critical parameters: PNP Darlington configuration, 8 A maximum collector current, 60 V maximum collector-emitter breakdown voltage, 1000 minimum DC current gain, -65°C to 150°C operating temperature range, and TO-220-3 through-hole package. Direct substitution is supported for applications where the TIP105's higher collector cutoff current (50 µA versus 20 µA) and saturation voltage (2.5 V versus 2 V) are within circuit tolerance.

Q: What are the key differences between the 2N6040 and TIP105?

A: The primary differences are product status (2N6040 is obsolete; TIP105 is active), maximum power rating (75 W versus 80 W), transition frequency (not specified for 2N6040; 4 MHz for TIP105), collector cutoff current (20 µA versus 50 µA), and saturation voltage at maximum current (2 V versus 2.5 V). Electrical ratings for collector current, breakdown voltage, and operating temperature are identical.

Q: Are there packaging differences between these components?

A: Both the 2N6040 and TIP105 use TO-220-3 through-hole packaging with identical mechanical configuration. No package adaptation is required for substitution.

Q: What is the significance of the higher collector cutoff current in the TIP105?

A: The TIP105 specifies a maximum collector cutoff current of 50 µA compared to 20 µA for the 2N6040. This parameter represents leakage current in the off state. Applications sensitive to leakage current, particularly in high-impedance circuits or precision analog applications, require evaluation of this specification difference.

Q: Does the TIP105's saturation voltage difference affect circuit performance?

A: The TIP105 exhibits 2.5 V saturation voltage at 80 mA base current and 8 A collector current, compared to 2 V for the 2N6040 at 16 mA base current and 4 A collector current. This 0.5 V difference may impact circuits with tight voltage margins or low supply voltages. Circuit-level analysis is required for applications where saturation voltage is a critical design parameter.

Q: Is the TIP105 suitable for new product designs?

A: Yes. The TIP105 is classified as an active product with current manufacturing availability. It meets all electrical and mechanical requirements for PNP Darlington applications requiring 60 V, 8 A specifications in TO-220-3 packaging. The active product status makes it appropriate for new designs and long-term production requirements.