Nexperia USA Inc. PRMD13Z

Overview

PRMD13Z from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP bipolar junction transistor in a single DFN1412-6 (SOT1268) package, rated for 50 V V_CEO, 100 mA output current per transistor, and AEC-Q101 qualification - used for digital signal switching and IC input control in space-constrained automotive and industrial PCBs.

For engineers reviewing the PRMD13Z datasheet, PRMD13Z pinout, PRMD13Z application, or PRMD13Z equivalent, this page delivers verified pin functions, thermal derating behavior, built-in bias resistor ratios (R2/R1 = 8–12), DC current gain (h_FE = 100 min at I_C = 10 mA), and direct substitution guidance versus BC847/BC857 discrete pairs.

Technical Context

The PRMD13Z implements dual complementary RET topology: TR1 is NPN with base driven via internal R1 (4.7 kΩ typ) and R2 (47 kΩ typ), TR2 is PNP with identical bias network. Both transistors share independent emitter-grounded terminals and collector outputs, enabling push-pull or level-shifting configurations without external bias components.

Its DFN1412-6 package features 0.47 mm body height and thermal resistance R_th(j-a) = 261 K/W (per device on FR4), supporting high-density routing and thermal management in automotive control modules where ambient operation spans −55 °C to +150 °C.

Key Specifications

Pinout & Package

DFN1412-6 (SOT1268) is a leadless, thermally enhanced ultra-thin surface-mount package measuring 1.4 mm × 1.2 mm × 0.47 mm, with exposed thermal pad and 6 terminals. Pin numbering follows top-side marking orientation (B6) and transparent top-view layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847B/BC857B, PRMD13Z reduces assembly steps and improves thermal margin but fixes R1/R2 values; versus PRMH13, it provides true complementary switching essential for level translation and H-bridge control - making it uniquely suited for automotive signal conditioning where polarity diversity matters.

Availability

PRMD13Z is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, medical infusion pump interfaces, and consumer appliance motor drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PRMD13Z 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

PRMD13Z belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT-resistor combinations in digital switching applications where space, reliability, and AEC-Q101 compliance are critical.

FAQ

What is the maximum operating temperature for PRMD13Z?

The PRMD13Z has a maximum junction temperature (T_j) of 150 °C and operates over an ambient temperature range of −55 °C to +150 °C. Its thermal resistance is 261 K/W (per device on FR4), so at 25 °C ambient, full 480 mW dissipation is allowed - derating begins linearly above that point per Figure 1 in the datasheet.

Can PRMD13Z replace BC847/BC857 in existing designs without layout changes?

No - PRMD13Z uses a 6-pin DFN1412-6 (SOT1268) package, whereas BC847/BC857 are typically in SOT23 or SC-70 packages. Layout redesign is required to accommodate the smaller 1.4 mm × 1.2 mm footprint and bottom-thermal-pad soldering. However, schematic replacement is direct: each transistor maps to corresponding pins with built-in biasing.

Is the R2/R1 ratio adjustable or fixed?

The R2/R1 ratio is fixed at 10 (typical), with a guaranteed range of 8–12 per unit at 25 °C. It is laser-trimmed during manufacturing and not user-adjustable. This ratio stabilizes switching thresholds against h_FE variation and temperature drift, eliminating need for external feedback tuning.

Does PRMD13Z support 3.3 V logic interfacing without level shifters?

Yes - its VI(on) is 0.9–1.3 V (typ/max) and VI(off) is 0.5–0.6 V (min/typ), making it fully compatible with 3.3 V CMOS/TTL logic families. The internal R1 resistor ensures adequate base current from 3.3 V GPIOs, achieving full saturation without external components or level translation.