2PA1774RMB,315 Equivalent & Substitute Parts

Part Overview

The 2PA1774RMB,315 is an active-status PNP bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-883 package. This component operates at a maximum collector voltage of 40 V with a collector current rating of 100 mA and a maximum power dissipation of 250 mW. The device is qualified to AEC-Q101 automotive standards and carries ROHS3 compliance. Substitute parts are identified to address application requirements such as increased current capacity, enhanced frequency performance, or alternative package geometries while maintaining electrical compatibility within specified parameter ranges.

Substiute Parts

2PA1774RMB,315

Nexperia USA Inc.In Stock: 8552PA1774RMB,315 Datasheet

Current PartRFQ

NST3906F3T5G

onsemiIn Stock: 8426NST3906F3T5G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2PA1774RMB,315 with the NST3906F3T5G is permissible based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• Transistor Type: Both are PNP bipolar junction transistors
• Voltage - Collector Emitter Breakdown (Max): Both rated at 40 V
• Mounting Type: Both are surface mount devices
• RoHS Status: Both are ROHS3 compliant
• REACH Status: Both are REACH unaffected
• Moisture Sensitivity Level: Both rated MSL 1 (Unlimited)

Allowable Differences:

• Current - Collector (Ic) (Max): NST3906F3T5G rated at 200 mA exceeds the 100 mA specification of 2PA1774RMB,315, providing increased current capacity
• Power - Max: NST3906F3T5G rated at 290 mW exceeds the 250 mW specification, providing increased power handling
• Frequency - Transition: NST3906F3T5G rated at 250 MHz exceeds the 100 MHz specification, providing enhanced frequency performance
• Package / Case: NST3906F3T5G uses SOT-1123 package versus SOT-883, requiring PCB layout modification
• Operating Temperature Range: NST3906F3T5G specifies -55°C to 150°C versus 150°C maximum for 2PA1774RMB,315

The NST3906F3T5G operates within the same voltage class and maintains PNP polarity, making it electrically compatible for applications where the original part specifications are met or exceeded.

Parameter Comparison

Engineering Selection Recommendations

Both the 2PA1774RMB,315 and NST3906F3T5G are active-status components with ROHS3 compliance and REACH unaffected status, suitable for production applications.

Selection Criteria:

The 2PA1774RMB,315 is the primary choice when the application requires the SOT-883 package geometry, automotive-grade qualification (AEC-Q101), and the specified electrical characteristics including 100 mA maximum collector current and 100 MHz transition frequency.

The NST3906F3T5G serves as a substitute when the application requires increased collector current capacity (200 mA), higher power dissipation capability (290 mW), or enhanced frequency performance (250 MHz). The SOT-1123 package requires PCB layout modification and footprint redesign. The NST3906F3T5G does not carry explicit automotive qualification designation in the provided data.

Both devices maintain the 40 V collector-emitter breakdown voltage rating and PNP polarity. The choice between these parts depends on circuit requirements for current, power, and frequency performance, as well as package compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the NST3906F3T5G directly replace the 2PA1774RMB,315 on an existing PCB?

A: Direct PCB replacement is not possible without layout modification. The 2PA1774RMB,315 uses the SOT-883 package, while the NST3906F3T5G uses the SOT-1123 package. These packages have different footprints, pin configurations, and physical dimensions. PCB redesign and re-layout are required for substitution.

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

A: The NST3906F3T5G provides higher current capacity (200 mA versus 100 mA), greater power dissipation capability (290 mW versus 250 mW), and higher transition frequency (250 MHz versus 100 MHz). Both maintain the same 40 V collector-emitter breakdown voltage. The NST3906F3T5G exhibits higher saturation voltage (400 mV versus 200 mV at specified conditions) and lower DC current gain (100 versus 180 at different measurement points).

Q: Are both parts suitable for automotive applications?

A: The 2PA1774RMB,315 carries AEC-Q101 automotive qualification. The NST3906F3T5G is listed as active-status with ROHS3 compliance but does not include explicit automotive qualification in the provided specifications.

Q: What is the operating temperature range for each part?

A: The 2PA1774RMB,315 specifies a maximum operating temperature of 150°C. The NST3906F3T5G specifies an operating temperature range of -55°C to 150°C, providing extended low-temperature capability.

Q: Can I use the NST3906F3T5G in a circuit designed for the 2PA1774RMB,315?

A: Electrical substitution is possible if the circuit design accommodates the higher current and power ratings of the NST3906F3T5G. The different saturation voltage and DC current gain characteristics must be evaluated for the specific application. Package incompatibility requires PCB redesign.

Q: What is the moisture sensitivity level for both parts?

A: Both the 2PA1774RMB,315 and NST3906F3T5G are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.