Nexperia USA Inc. PEMH20,115

Overview

PEMH20 from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT666 package, integrating two matched 50 V, 100 mA NPN transistors with built-in 2.2 kΩ input bias resistors (R1 = R2) per channel. It functions as a compact, pre-biased digital switching pair for low-current logic interfacing and peripheral driving, eliminating external base resistors.

For engineers reviewing the PEMH20 datasheet, PEMH20 pinout, PEMH20 application, or PEMH20 equivalent, this device is selected for space-constrained digital I/O buffering, IC input control, and replacement of discrete transistor-resistor combinations where board area and assembly cost reduction are critical.

Technical Context

The PEMH20 integrates two independent NPN transistors on a single die, each with dedicated 2.2 kΩ base-input resistors (R1) and 2.2 kΩ base-emitter feedback resistors (R2), yielding an R2/R1 ratio of 1.0 ±20%. Its design targets direct TTL/CMOS-level drive without external biasing components.

Each transistor operates with V_CEO = 50 V, I_O = 100 mA, and V_CE(sat) ≤ 150 mV at I_C = 10 mA / I_B = 0.5 mA. Thermal resistance is 416 K/W (per device, FR4 PCB), supporting operation from −65 °C to +150 °C ambient.

Key Specifications

Pinout & Package

SOT666 ultra-small flat-lead plastic package: 6-pin, 0.5 mm pitch, 1.6 mm × 1.2 mm × 0.55 mm body height. Designed for high-density surface-mount assembly with reflow-compatible footprint per Fig. 9 in datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NPN RET applications.

Compared with PEMD20, PEMH20 provides matched NPN channels ideal for parallel digital outputs; versus NSVD2001MUTBG, it delivers double the output current and tighter R2/R1 matching at the cost of slightly higher input current draw.

Availability

PEMH20 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, logic-level translation, and small-signal relay control requiring stable component supply and long-term production continuity.

Supply support for PEMH20 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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer applications.

PEMH20 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to reduce component count and improve reliability in digital interface and low-power switching applications.

FAQ

Is PEMH20 suitable for 5 V logic-level switching?

Yes. PEMH20 supports VI(on) ≤ 1.6 V and VI(off) ≥ 1.2 V at 25 °C, ensuring robust turn-on with standard 5 V TTL/CMOS outputs and reliable turn-off with 3.3 V logic levels. Its 50 V V_CEO rating provides ample margin for 5 V rail operation.

Can PEMH20 replace two separate BC847B transistors?

Yes, but only in digital switching applications where base resistors are used. PEMH20 integrates 2.2 kΩ R1 and R2 per channel, eliminating four external resistors. However, it lacks the adjustable bias flexibility of discrete transistors in analog amplifier configurations.

What is the maximum continuous current per channel?

The absolute maximum continuous output current per transistor is 100 mA, verified per IEC 60134 limiting values. At 100 mA and 25 °C ambient, V_CE(sat) remains ≤150 mV, and total device power dissipation stays within the 300 mW limit on standard FR4 PCB.

Does PEMH20 require external flyback diodes when driving inductive loads?

No external diode is required for basic operation, but Nexperia recommends adding a flyback diode across inductive loads (e.g., relays) to suppress voltage spikes exceeding 50 V. The internal R2 resistor does not provide full clamping; it only aids in controlled turn-off.