Nexperia USA Inc. PUMD9/ZLF

Overview

PUMD9/ZLF from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP bipolar junction transistor in a single SOT363-3 (TSSOP6) package, with built-in bias resistors R1 = 10 kΩ and R2 = 47 kΩ, rated for 50 V V_CEO, 100 mA output current per transistor, and optimized for digital switching in automotive and industrial control circuits.

For engineers reviewing the PUMD9/ZLF datasheet, PUMD9/ZLF pinout, PUMD9/ZLF application, or PUMD9/ZLF equivalent, this device serves as a space- and BOM-optimized alternative to discrete BC847/BC857 pairs in level-shifting, IC input control, and low-power load switching where integrated biasing reduces layout complexity and assembly cost.

Technical Context

The PUMD9/ZLF integrates two complementary transistors-TR1 (NPN) and TR2 (PNP)-each with dedicated on-chip base bias networks (R1 = 10 kΩ, R2 = 47 kΩ), enabling direct logic-level drive without external resistors. Its dual-polarity configuration supports push-pull or complementary switching topologies.

Each transistor operates independently with verified DC current gain (h_FE ≥ 100 at I_C = 5 mA, V_CE = 5 V), collector-emitter saturation voltage ≤ 100 mV (TR1) and ≤ 100 mV (TR2), and transition frequencies of 230 MHz (TR1) and 180 MHz (TR2), confirming suitability for medium-speed digital interface applications.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) plastic surface-mounted package: 1.35 mm × 2.2 mm footprint, 0.65 mm pitch, 0.95 mm max height, designed for reflow soldering with standard FR4 PCB land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMH9 and PUMB9, the PUMD9/ZLF uniquely delivers matched NPN/PNP functionality in one die, enabling true complementary switching without inter-device timing skew or parameter mismatch-critical for clean signal inversion and reduced EMI in tightly timed control loops.

Availability

PUMD9/ZLF is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and compact IoT device GPIO expansion requiring stable component supply, long-term lifecycle assurance, and AEC-Q200-aligned manufacturing traceability.

Supply support for PUMD9/ZLF 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The PUMD9/ZLF belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to reduce component count and improve reliability in digital interface and switching applications where space, cost, and assembly yield are critical constraints.

FAQ

What is the maximum operating temperature for PUMD9/ZLF?

The PUMD9/ZLF has a specified junction temperature limit of 150 °C and an ambient operating range of -65 °C to +150 °C. Thermal resistance from junction to ambient is 417 K/W (per device on FR4 PCB), meaning it can dissipate up to 300 mW at 25 °C ambient before reaching T_j = 150 °C under derated conditions.

Can PUMD9/ZLF replace BC847 and BC857 transistors directly?

Yes-PUMD9/ZLF serves as a drop-in functional replacement for BC847 (NPN) and BC857 (PNP) pairs in digital switching applications, provided the circuit uses the same SOT363-3 footprint and leverages the built-in bias resistors. No external resistors are needed, but pin mapping differs: O1/I1/GND1 and O2/I2/GND2 must be routed accordingly.

Is PUMD9/ZLF qualified for automotive applications?

No-PUMD9/ZLF is not AEC-Q200 qualified. While its specifications meet many automotive electrical requirements (e.g., 50 V rating, -40 °C to +125 °C operational range), Nexperia explicitly states in the legal disclaimers that non-automotive qualified products are not tested or warranted for automotive use. For automotive designs, consult Nexperia's AEC-Q200-certified RET portfolio.

How does the R2/R1 ratio affect switching behavior?

The fixed R2/R1 ratio of 4.7 determines the internal base current division and ensures stable saturation under varying V_CC and temperature. It guarantees minimum h_FE-independent turn-on at logic thresholds (VI(on) = 0.8–1.4 V) and maintains VI(off) ≤ 0.7 V to prevent leakage-induced false triggering in noisy environments.