DXT751Q-13 Equivalent & Substitute Parts

Part Overview

The DXT751Q-13 is an active-status PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-89-3 package. This component operates at maximum collector current of 3 A and collector-emitter breakdown voltage of 60 V, with a maximum power dissipation of 1 W. The device is qualified to AEC-Q101 automotive standards and carries ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this product category.

Substiute Parts

DXT751Q-13

Diodes IncorporatedIn Stock: 900365DXT751Q-13 Datasheet

Current PartRFQ

2SA2125-TD-E

onsemiIn Stock: 196752SA2125-TD-E Datasheet

MFR RecommendedRFQ

PBSS5360XF

Nexperia USA Inc.In Stock: 3251PBSS5360XF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DXT751Q-13 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor type must be PNP
• Collector current (Ic) maximum must equal or exceed 3 A
• Collector-emitter breakdown voltage must equal or exceed 60 V
• Package type must be TO-243AA with surface mount configuration
• RoHS3 compliance required
• Moisture sensitivity level must be 1 (Unlimited)

Secondary Compatibility Factors:

• Operating temperature range must encompass the application requirements
• Power dissipation capability should support the intended circuit function
• Automotive grade and AEC-Q101 qualification are preferred for applications requiring these certifications

The substitute parts identified—2SA2125-TD-E and PBSS5360XF—meet the primary electrical criteria for collector current and package compatibility. Variations in transition frequency, power dissipation, and saturation voltage characteristics reflect different device designs within the acceptable parameter envelope for this product category.

Parameter Comparison

Engineering Selection Recommendations

PBSS5360XF is the primary substitute for the DXT751Q-13 in applications requiring automotive-grade components. Both devices share identical collector current and breakdown voltage specifications, matching TO-243AA package configuration, and carry AEC-Q101 qualification with automotive grade designation. Operating temperature range is equivalent (-55°C to 150°C). RoHS3 compliance and unlimited moisture sensitivity level are maintained. The PBSS5360XF exhibits slightly higher power dissipation (1.35 W versus 1 W) and lower transition frequency (65 MHz versus 100 MHz), characteristics that do not restrict substitution in standard switching applications.

2SA2125-TD-E is an alternative substitute where automotive qualification is not required. This device meets the primary electrical criteria of 3 A collector current and TO-243AA package compatibility with ROHS3 compliance. The 2SA2125-TD-E operates at reduced collector-emitter breakdown voltage (50 V versus 60 V), which limits its application to circuits where the maximum supply voltage does not exceed 50 V. The device provides enhanced power dissipation capability (3.5 W) and higher transition frequency (390 MHz), suitable for higher-speed switching applications. Operating temperature specification is limited to a maximum of 150°C without a defined minimum temperature range.

Selection between substitutes depends on application voltage requirements, temperature operating range, and automotive qualification necessity.

Frequently Asked Questions (FAQ)

Q: Can the 2SA2125-TD-E replace the DXT751Q-13 in all applications?

A: The 2SA2125-TD-E is electrically compatible for collector current and package configuration. However, the reduced collector-emitter breakdown voltage (50 V versus 60 V) restricts its use to circuits where the maximum applied voltage does not exceed 50 V. Additionally, the 2SA2125-TD-E lacks automotive grade and AEC-Q101 qualification, making it unsuitable for automotive applications requiring these certifications.

Q: What is the significance of the TO-243AA package designation?

A: The TO-243AA package is the standardized mechanical and thermal interface for all three devices. This designation ensures pin compatibility, PCB footprint alignment, and thermal performance consistency across substitutions. All three parts are surface mount devices with identical package geometry.

Q: Are there differences in saturation voltage between the main part and substitutes?

A: Yes. The DXT751Q-13 exhibits 600 mV saturation voltage at 300 mA and 3 A collector current. The PBSS5360XF shows 550 mV under the same conditions, while the 2SA2125-TD-E specifies 500 mV at different test conditions (100 mA and 2 A). These variations reflect different device designs and do not prevent substitution in standard switching circuits where saturation voltage tolerance is typically ±100 mV or greater.

Q: Is the PBSS5360XF suitable for automotive applications?

A: Yes. The PBSS5360XF carries automotive grade designation and AEC-Q101 qualification, matching the DXT751Q-13 in this regard. Both devices are approved for automotive-grade circuit implementations.

Q: What does AEC-Q101 qualification indicate?

A: AEC-Q101 is an automotive electronics council qualification standard for discrete semiconductors. This certification confirms that the device meets stringent reliability, quality, and performance requirements for automotive applications, including temperature cycling, thermal shock, and long-term stability testing.

Q: Can the DXT751Q-13 be replaced with the PBSS5360XF without circuit modification?

A: The PBSS5360XF is a direct substitute for the DXT751Q-13 without circuit modification. Both devices share identical collector current (3 A), collector-emitter breakdown voltage (60 V), package type (TO-243AA), operating temperature range (-55°C to 150°C), and automotive qualifications. Pin configuration and electrical characteristics are compatible for standard switching applications.

Q: What is the moisture sensitivity level (MSL) and why is it important?

A: MSL 1 (Unlimited) indicates that the device has no moisture sensitivity restrictions and does not require special handling, storage, or baking procedures prior to soldering. All three parts carry this designation, ensuring consistent manufacturing and assembly processes.