Nexperia USA Inc. PEMD2,115

Overview

PEMD2 from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP silicon bipolar transistor with built-in bias resistors (R1 = R2 = 22 kΩ) in a single SOT666 package. It delivers 100 mA output current per transistor, supports 50 V collector-emitter breakdown voltage, and functions as a compact logic-level interface driver in space-constrained digital control circuits.

For engineers reviewing the PEMD2 datasheet, PEMD2 pinout, PEMD2 application, or PEMD2 equivalent, this device serves as a drop-in replacement for discrete NPN+PNP pairs in low-current peripheral interfacing-offering verified VI(on)/VI(off) thresholds, known thermal resistance (417 K/W per device), and documented DC current gain (hFE ≥ 60 at IC = 5 mA).

Technical Context

The PEMD2 integrates complementary NPN (TR1) and PNP (TR2) transistors sharing no internal connection except ground terminals, each with dedicated base-input resistors (R1) and feedback resistors (R2) forming integrated bias networks. Its dual-transistor topology enables push-pull or complementary switching without external resistors.

Each transistor operates independently under standard BJT conditions: TR1 exhibits fT = 230 MHz and Cc = 2.5 pF; TR2 provides fT = 180 MHz and Cc = 3 pF. Both support operation across −40 °C to +150 °C ambient temperature with defined saturation voltages (VCEsat ≤ 150 mV) and cutoff leakage (ICEO ≤ 5 µA at Tj = 150 °C).

Key Specifications

Pinout & Package

SOT666 plastic surface-mount package: 6-pin, 0.5 mm pitch, 1.6 mm × 1.2 mm × 0.55 mm body height, ultra-small footprint optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PEMH1 and PEMB1, the PEMD2 uniquely combines NPN and PNP in one package-enabling true complementary operation without inter-device timing skew or layout mismatch, critical for clean signal inversion and reduced EMI in compact digital systems.

Availability

PEMD2 is available at Aetrix Electronics and suitable for low-current peripheral drivers, microcontroller I/O expanders, digital input conditioners, and complementary output stages requiring stable component supply and long-term manufacturability.

Supply support for PEMD2 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 applications.

The PEMD2 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to reduce component count and improve assembly efficiency in digital interface and peripheral control circuits.

FAQ

What is the maximum operating temperature for PEMD2?

The PEMD2 has a specified junction temperature limit of 150 °C and an ambient operating range of −55 °C to +150 °C. Its thermal resistance (Rth(j-a) = 417 K/W per device on FR4) allows continuous 100 mA operation at up to 85 °C ambient when mounted on standard PCBs with recommended solder land patterns.

Can PEMD2 replace discrete transistor-resistor combinations in existing designs?

Yes-PEMD2 directly replaces two discrete transistors plus four external bias resistors. Pin mapping matches standard SOT666 layout; VI(on)/VI(off) thresholds (1.7–2.5 V / 0.8–1.1 V) and VCEsat (≤150 mV) are fully characterized, enabling drop-in substitution without recalculating bias networks or revalidating timing margins.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 ratio is fixed at 1.0 (±20%) per datasheet Table 1, ensuring matched feedback for stable saturation and predictable turn-off characteristics. This ratio determines base current division and directly impacts hFE utilization and switching speed consistency between TR1 and TR2 under identical drive conditions.

Is PEMD2 qualified for automotive applications?

No-this revision of PEMD2 is explicitly marked as non-automotive qualified per Nexperia's 2023 revision history. It is not tested to AEC-Q101 requirements and lacks automotive-grade qualification documentation; use in automotive systems requires formal validation by the end customer and carries no manufacturer warranty for such applications.