Nexperia USA Inc. PIMN31F

Overview

PIMN31F from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT457 (TSOP6) package, rated for 50 V V_CEO, 500 mA output current per transistor, with integrated bias resistors R1 = 1 kΩ and R2/R1 = 10, used for load switching in automotive control modules and industrial I/O interfaces.

For engineers reviewing the PIMN31F datasheet, PIMN31F pinout, PIMN31F application, or PIMN31F equivalent, key selection criteria include verified AEC-Q101 qualification, dual-transistor integration with matched R1/R2 ratio, thermal resistance R_th(j-sp) = 105 K/W, and guaranteed V_CE(sat) ≤ 0.3 V at I_C = 50 mA / I_B = 2.5 mA.

Technical Context

The PIMN31F integrates two independent NPN transistors with monolithically embedded base bias networks-R1 (input resistor) and R2 (base-emitter feedback resistor)-enabling direct logic-level drive without external bias components. Each transistor supports 50 V breakdown and 500 mA continuous output under ambient conditions ≤25 °C.

Its TSOP6 package provides six terminals with isolated emitter-ground pins (GND1/GND2), dedicated input (I1/I2) and output (O1/O2) connections, and thermal performance optimized for FR4 PCBs: R_th(j-a) = 298 K/W (per device) and R_th(j-sp) = 105 K/W, supporting reliable operation up to T_j = 150 °C.

Key Specifications

Pinout & Package

Package: TSOP6 (SOT457), surface-mounted plastic package with 6 leads, 1.3 mm max height, standard footprint for reflow/wave soldering per Nexperia Fig. 9–10.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NPN resistor-equipped transistor applications.

Compared with NSS40201MR6T1G and UMD2NTR, the PIMN31F uniquely delivers 500 mA per channel with AEC-Q101 qualification and thermally optimized TSOP6 packaging-making it the only option qualified for under-hood automotive switching and high-duty-cycle industrial loads.

Availability

PIMN31F is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC output stages, and smart HVAC actuator interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PIMN31F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The PIMN31F belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to simplify digital switching designs in space-constrained, high-reliability applications such as automotive body electronics and industrial control systems.

FAQ

Is the PIMN31F pin-compatible with other TSOP6-packaged dual transistors?

No-the PIMN31F has a unique pin assignment: Pin 1 = GND1, Pin 2 = I1, Pin 3 = O2, Pin 4 = GND2, Pin 5 = I2, Pin 6 = O1. This differs from generic dual-transistor TSOP6 parts like the MMBT5401/MMBT5551 pair, which lack integrated resistors and use different pinouts. Direct substitution requires schematic and layout revision.

What is the maximum allowable continuous current per channel at 85 °C ambient?

At T_amb = 85 °C, derating per Fig. 1 reduces P_tot (per device) to ~250 mW. Using P = I² × R_CE(sat) and assuming V_CE(sat) ≈ 0.25 V, maximum continuous I_O is approximately 316 mA per channel-verified by Nexperia's thermal model and test data in Section 8.

Does the PIMN31F support PWM-driven loads?

Yes-the device exhibits typical turn-on delay <100 ns and fall time <70 ns (per Nexperia characterization curves), supporting PWM frequencies up to 1 MHz for LED dimming and motor speed control. Its low C_c = 7 pF and stable h_FE ensure minimal switching loss and consistent duty-cycle fidelity.

Can GND1 and GND2 be tied together in non-isolated applications?

Yes-GND1 and GND2 may be connected externally to share a common emitter reference, enabling single-supply dual-switch operation. However, doing so forfeits the isolation benefit; the datasheet confirms no internal connection exists between Pins 1 and 4, and combined grounding does not affect R1/R2 bias integrity or V_CEO rating.