Nexperia USA Inc. PEMD48,115

Overview

PEMD48 from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP silicon bipolar transistor with built-in bias resistors in a single SOT666 package. It delivers 100 mA output current per transistor, supports 50 V V_CEO, and features dual R1/R2 resistor networks: TR1 (NPN) with R1 = 47 kΩ / R2 = 47 kΩ (R2/R1 ≈ 1), TR2 (PNP) with R1 = 2.2 kΩ / R2 = 47 kΩ (R2/R1 ≈ 21). It is used for low-current peripheral driving and IC input control in space-constrained digital logic interfaces.

For engineers reviewing the PEMD48 datasheet, PEMD48 pinout, PEMD48 application, or PEMD48 equivalent, this device serves as a compact, component-count-reducing replacement for discrete NPN+PNP transistor pairs in level-shifting, bus buffering, and GPIO interface circuits where bias resistor integration eliminates external components and reduces PCB footprint.

Technical Context

The PEMD48 implements two independent bipolar transistors - TR1 (NPN) and TR2 (PNP) - each with factory-trimmed on-chip base bias resistors enabling direct logic-level drive without external biasing. TR1 exhibits h_FE ≥ 80 at I_C = 5 mA and V_CE = 5 V; TR2 achieves h_FE ≥ 100 at I_C = −10 mA and V_CE = −5 V. Both transistors share thermal coupling within the monolithic die but operate electrically isolated.

Its SOT666 package enables 0.5 mm pitch routing and supports reflow-only soldering on FR4 PCBs. The integrated R1/R2 network defines VI(on) and VI(off) thresholds: TR1 switches on at ~1.6 V and off below ~0.8 V; TR2 switches on at ~−0.75 V and off above ~−0.6 V, enabling robust noise-immune digital switching in mixed-polarity signal paths.

Key Specifications

Pinout & Package

SOT666 plastic surface-mount package: 6-lead, 0.5 mm pitch, 1.6 mm × 1.2 mm × 0.55 mm body height. Designed for high-density routing and automated placement on FR4 PCBs with single-sided 35 µm copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVD20011MUTBG and PUMD12,115, the PEMD48 uniquely integrates matched NPN/PNP functionality in one ultra-small package, enabling true push-pull drive and bidirectional logic interfacing without external components - critical for miniaturized digital I/O expansion.

Availability

PEMD48 is available at Aetrix Electronics and suitable for LED indicator systems, microcontroller GPIO expansion, bus buffer interfaces, and power sequencing control requiring stable component supply and long-term industrial availability.

Supply support for PEMD48 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 for automotive, industrial, and consumer markets.

The PEMD48 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to reduce component count and improve assembly yield in digital interface and peripheral driver applications.

FAQ

What is the maximum ambient temperature for continuous operation of PEMD48?

The PEMD48 is rated for ambient temperatures from −65 °C to +150 °C. 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 continuous operation at full load occurs at Tamb ≤ 75 °C on standard FR4 PCBs.

Can PEMD48 replace discrete BC847/BC857 pairs in existing designs?

Yes - the PEMD48 matches BC847 (NPN) and BC857 (PNP) electrical characteristics including h_FE, V_CE(sat), and V_CEO, while integrating their base bias resistors. Pin mapping differs (SOT666 vs. SOT363), so PCB layout revision is required, but schematic changes are unnecessary.

Does PEMD48 support 1.8 V logic input levels reliably?

Yes - TR1's VI(on) is specified at 1.6 V (typical) and TR2's VI(on) at −0.75 V (typical), both well within 1.8 V logic high/low margins. Measured VI(off) values (0.8 V for TR1, −0.6 V for TR2) provide >0.2 V noise immunity at 1.8 V supply.

Is PEMD48 qualified for automotive applications?

No - the datasheet explicitly states "non-automotive qualified products" and confirms the device is not tested or warranted for automotive use. It meets industrial-grade reliability standards but lacks AEC-Q101 qualification, PPAP documentation, or automotive-specific stress testing.