NXP Semiconductors PEMH17,115

Overview

PEMH17 from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT666 package, integrating two matched NPN transistors with built-in bias resistors R1 = 47 kΩ and R2 = 22 kΩ. It delivers 100 mA DC output current per transistor, 50 V collector-emitter voltage rating, and operates up to 150 °C junction temperature - used for compact digital logic interfacing and low-current peripheral driving in space-constrained consumer and industrial PCBs.

For engineers reviewing the PEMH17 datasheet, PEMH17 pinout, PEMH17 application, or PEMH17 equivalent, key selection criteria include verified dual-NPN RET functionality, precise R1/R2 ratio (0.47 typ), guaranteed VCE(sat) ≤150 mV at IC = 10 mA/IB = 0.5 mA, and SOT666 thermal resistance of 416 K/W (per device), critical for thermal-aware digital buffer design.

Technical Context

This dual-NPN RET integrates two independent NPN transistors sharing no internal connection between them - each has its own base input (pins 2 & 5), collector output (pins 3 & 6), and emitter tied to GND (pins 1 & 4). The integrated R1–R2 network provides fixed base biasing, eliminating external resistors and enabling direct TTL/CMOS-level drive.

It operates as a digitally controlled switch: VI(on) = 2.7 V (typ) ensures reliable turn-on with standard 3.3 V logic, while VI(off) = 1.7 V (typ) guarantees robust noise margin against false triggering. hFE ≥60 at IC = 5 mA supports stable gain-controlled switching without external feedback.

Key Specifications

Pinout & Package

SOT666 plastic surface-mounted package (6-lead, 1.7 × 1.5 mm body, 0.65 mm pitch), optimized for high-density routing and reflow soldering only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMH17 and PEMH18, PEMH17 offers optimal balance of thermal performance (416 K/W per device), 3.3 V logic compatibility (VI(on) = 2.7 V), and mechanical robustness in SOT666 - making it preferred for industrial control modules requiring long-term reliability under thermal stress.

Availability

PEMH17 is available at Aetrix Electronics and suitable for industrial sensor interfaces, consumer appliance control logic, and microcontroller GPIO expansion requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for PEMH17 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, and computing markets.

PEMH17 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete BJT-resistor combinations in digital interface and peripheral driver applications - minimizing BOM count and assembly complexity.

FAQ

Is PEMH17 pin-compatible with PUMH17?

No - PEMH17 uses SOT666 (6-pin, 1.7 × 1.5 mm) with pin order GND–IN–OUT–GND–IN–OUT, while PUMH17 uses SOT363 (SC-88, 2.0 × 1.25 mm) with pin order OUT–IN–GND–GND–IN–OUT. Footprint and stencil design must be updated for substitution; no mechanical interchangeability exists.

What is the maximum allowable input voltage at the base pins?

The absolute maximum input voltage (VI) is +40 V positive and −10 V negative per datasheet Table 6. This rating applies to pins 2 and 5 individually - exceeding these values risks permanent damage to the internal R1–R2 network or transistor junctions, even with current limiting.

Can PEMH17 drive a 24 V relay coil directly?

No - PEMH17 is rated for V_CEO = 50 V but is designed as a low-voltage switch (typically ≤5 V logic control). Driving a 24 V relay coil requires external flyback protection and voltage translation; use PEMH17 only to drive the relay's optocoupler input or low-side MOSFET gate, not the coil directly.

Does PEMH17 require external decoupling capacitors?

No - PEMH17 contains no internal active circuitry requiring bypassing. However, a 100 nF ceramic capacitor placed near each input pin (2 and 5) to local ground improves noise immunity in noisy industrial environments, especially when traces exceed 5 cm in length.