Nexperia USA Inc. PUMH7F

Overview

PUMH7 from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT363 (SC-88) package, featuring integrated 4.7 kΩ base bias resistor (R1) and open R2 configuration. It serves as a compact, low-component-count driver for digital logic interfaces and IC input control, with V_CEO = 50 V, I_O = 100 mA per transistor, and h_FE = 200–330 at I_C = 1 mA.

For engineers reviewing the PUMH7 datasheet, PUMH7 pinout, PUMH7 application, or PUMH7 equivalent, this device is selected for space-constrained digital switching where simplified biasing, reduced PCB footprint, and consistent DC current gain across temperature are critical design requirements.

Technical Context

The PUMH7 integrates two independent NPN transistors sharing no internal connection between R1 and R2-R2 is unconnected (open), enabling flexible external biasing or direct logic-level drive. Each transistor operates with identical limiting values: V_CEO = 50 V, I_C(DC) = 100 mA, and P_tot = 300 mW per device at T_amb ≤ 25 °C.

Its thermal resistance R_{th j-a} is 416 K/W (per device, SOT363), and key electrical characteristics include V_CE(sat) ≤ 100 mV at I_C = 5 mA/I_B = 0.25 mA, C_c = 2.5 pF at V_CB = 10 V, and h_FE variation bounded by min/typ/max values across production lots.

Key Specifications

Pinout & Package

PUMH7 is housed in a plastic surface-mounted SOT363 (SC-88) package with six leads, 1.35 mm × 1.15 mm body size, 0.65 mm pitch, and standard FR4-mount thermal profile (R_{th j-a} = 416 K/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVD2T2143X and EMH7, PUMH7 offers optimal balance of minimal footprint (SOT363), single-resistor biasing flexibility (R2 open), and mid-range h_FE, making it preferred for space-constrained digital interface layers where design simplicity and layout density are prioritized over dual-resistor symmetry or thermal headroom.

Availability

PUMH7 is available at Aetrix Electronics and suitable for microcontroller GPIO expansion, LED driver interfaces, logic-level translation, and IC input control requiring stable component supply across industrial and consumer production programs.

Supply support for PUMH7 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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and consumer markets.

PUMH7 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered to replace general-purpose transistors in digital logic interfacing applications where PCB area, assembly cost, and design cycle time are critical constraints.

FAQ

What is the function of the open R2 terminal in PUMH7?

The R2 terminal is unconnected (open) inside the PUMH7, meaning no internal resistor links the base and emitter of either transistor. This allows full external control of base biasing-enabling configurations like grounded-emitter switches, emitter followers, or custom current-limiting networks without interference from an integrated resistor.

Can PUMH7 be used in linear amplification applications?

No-PUMH7 is characterized and qualified only for switching operation. Its h_FE specification is given at I_C = 1 mA (not over full range), V_CE(sat) is optimized for saturation, and thermal derating curves assume pulsed or DC-switching duty cycles-not continuous linear biasing.

Is pin 1 polarity marked on the PUMH7 package?

Yes-PUMH7 uses standard SOT363 marking: a molded dot or notch identifies pin 1 at the top-left corner when the marking side faces up and the leads point downward. The pin 1 index aligns with the package outline's chamfered corner per JEDEC SC-88 specifications.

Does PUMH7 support reflow soldering only, or can it be hand-soldered?

Reflow soldering is the only recommended method per Nexperia's datasheet. Hand-soldering risks thermal damage due to the SOT363's small thermal mass and sensitivity to localized overheating; peak temperature must not exceed 260 °C for ≤10 seconds, which is difficult to control manually without voiding reliability guarantees.