Nexperia USA Inc. PMBD914,235

Overview

PMBD914 from Nexperia is a high-speed planar switching diode in SOT23 package, rated for 100 V repetitive peak reverse voltage (VRRM), 215 mA forward current (IF), and 4 ns reverse recovery time (trr); used in fast-switching power supply snubbers and signal routing circuits.

For engineers reviewing the PMBD914 datasheet, PMBD914 pinout, PMBD914 application, or PMBD914 equivalent, key selection criteria include trr ≤ 4 ns, Cd ≤ 1.5 pF, AEC-Q101 qualification, and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

The PMBD914 employs planar epitaxial construction to achieve low junction capacitance (1.5 pF at 0 V) and rapid carrier recombination, enabling sub-4 ns reverse recovery under IF = IR = 10 mA, RL = 100 Ω test conditions. Its anode–cathode–NC pinning supports unidirectional switching with minimal parasitic coupling.

Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, and junction-to-solder-point is 330 K/W - optimized for low-power, surface-mount timing and clamping functions where thermal mass is constrained.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, FR4-compatible footprint per Fig. 9 (reflow) and Fig. 10 (wave).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed switching diode applications.

Compared with BAS16,215 and 1N4148W-7-F, the PMBD914 uniquely combines AEC-Q101 qualification, 1.5 pF capacitance, and 100 V rating - making it the only option qualified for automotive 12 V/24 V systems requiring both robustness and RF-clean switching.

Availability

PMBD914 is available at Aetrix Electronics and suitable for automotive sensor interfaces, high-frequency pulse detection, and power supply snubbing requiring stable component supply across production lifecycles.

Supply support for PMBD914 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, delivering high-performance, reliable discrete, logic, and MOSFET devices for automotive, industrial, and mobile markets.

The PMBD914 belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for automotive-grade signal integrity and power switching in harsh-temperature environments.

FAQ

Is PMBD914 suitable for reverse polarity protection in 24 V automotive systems?

Yes - its 100 V VRRM and AEC-Q101 qualification ensure reliable operation under load dump transients (ISO 7637-2 Pulse 5a, up to 120 V). The 1 µA IR at 75 V prevents excessive quiescent current in always-on modules like CAN gateways.

Can PMBD914 replace 1N4148 in high-frequency oscillator tank circuits?

Yes, with improved performance - its 1.5 pF capacitance is 40% lower than 1N4148's typical 2.5 pF, reducing frequency pulling and phase noise in Colpitts or Hartley oscillators operating above 50 MHz.

What is the maximum continuous forward current derating above 25 °C ambient?

Per Fig. 5, PMBD914's IF derates linearly from 215 mA at 25 °C to zero at 150 °C ambient on FR4 PCB - slope is −2.15 mA/°C. At 85 °C ambient, max continuous IF is 92 mA.

Does pin 2 (n.c.) require PCB pad removal or floating layout?

No - pin 2 is internally unconnected but mechanically part of the SOT23 leadframe. It must retain its standard PCB pad (0.6 mm × 0.6 mm per Fig. 9) to ensure mechanical stability and thermal relief during reflow; do not remove or short it.