Nexperia USA Inc. PEMD3,315

Overview

PEMD3 from Nexperia is an NPN/PNP resistor-equipped double transistor (RET) in SOT666 package, rated for 50 V V_CEO, 100 mA output current per transistor, with built-in bias resistors R1 = R2 = 10 kΩ. It integrates complementary switching transistors on a single die for compact digital logic interfacing and low-current peripheral driving.

For engineers reviewing the PEMD3 datasheet, PEMD3 pinout, PEMD3 application, or PEMD3 equivalent, this device serves as a space- and BOM-optimized replacement for discrete NPN+PNP pairs in level-shifting, I/O buffering, and microcontroller GPIO expansion circuits where input threshold control and reduced external component count are critical.

Technical Context

The PEMD3 integrates two monolithically matched transistors - TR1 (NPN) and TR2 (PNP) - each with dedicated base bias networks (R1 = 10 kΩ, R2 = 10 kΩ). Its dual-polarity configuration enables push-pull or complementary switching without external resistors, supporting direct interface to CMOS/TTL logic levels.

Each transistor operates independently with verified V_CEO = 50 V, I_O = 100 mA, and thermal resistance R_th(j-a) = 417 K/W (per device), validated under FR4 PCB mounting conditions. The SOT666 package supports 0.5 mm pitch and 1.6 mm × 1.2 mm footprint, enabling high-density routing in portable and space-constrained designs.

Key Specifications

Pinout & Package

SOT666 ultra-small flat-lead surface-mount package: 6-pin, 0.5 mm pitch, 1.6 mm × 1.2 mm × 0.55 mm body height, designed for reflow soldering on fine-pitch PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PEMB11 and PEMH11, the PEMD3 uniquely provides mixed-polarity switching in one package - enabling true push-pull, inverting, or complementary logic functions without stacking or external inversion, making it the only choice for bidirectional signal conditioning or compact H-bridge pre-driver stages.

Availability

PEMD3 is available at Aetrix Electronics and suitable for microcontroller GPIO expansion, level-shifting interfaces, digital input conditioning, and low-power peripheral driver applications requiring stable component supply and long-term production continuity.

Supply support for PEMD3 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 high-volume, high-reliability essential semiconductors - delivering efficient, robust, and scalable solutions for automotive, industrial, and consumer markets.

The PEMD3 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to reduce design complexity and bill-of-materials cost in digital interface and logic-level translation circuits.

FAQ

What is the maximum ambient temperature for continuous operation of PEMD3?

The PEMD3 is rated for continuous operation from −65 °C to +150 °C ambient temperature. At full 100 mA load per transistor, derating begins above +25 °C ambient per the 417 K/W junction-to-ambient thermal resistance curve - maximum usable ambient drops to approximately +75 °C at 300 mW total dissipation on standard FR4 PCB.

Can PEMD3 replace discrete NPN+PNP transistor pairs in existing designs?

Yes - PEMD3 directly replaces two discrete transistors plus four bias resistors in standard logic interface configurations. Pin mapping matches functional roles (I1/O1 for NPN, I2/O2 for PNP), and electrical specs (V_CEO, I_O, h_FE) meet or exceed typical BC846/BC856 equivalents. Layout requires only SOT666 footprint adaptation.

Does PEMD3 support 1.8 V logic-level input drive?

No - PEMD3's VI(on) minimum is 1.8 V (typical) at I_C = 10 mA, but its guaranteed VI(on) is 2.5 V (max) and VI(off) is 0.8 V (min). At 1.8 V input, TR1 may not saturate reliably across temperature and process variation; it is specified for 3.3 V and 5 V logic families only.

Is PEMD3 qualified for automotive applications?

No - the PEMD3 data sheet explicitly states "Product(s) changed to non-automotive qualification" in the revision history. It is not AEC-Q101 qualified, lacks automotive-grade screening, and carries no automotive warranty. Use in automotive systems requires formal qualification by the end customer and is at their sole risk.