Nexperia USA Inc. PMBD914,215

Overview

PMBD914,215 from Nexperia is a high-speed switching diode in SOT23 package, designed for fast signal routing and voltage clamping in digital logic interfaces. It delivers trr ≤ 4 ns reverse recovery time, VF ≤ 1.25 V at 150 mA, and VR ≤ 100 V, with AEC-Q101 qualification for automotive-grade reliability in compact PCB layouts.

For engineers reviewing the PMBD914,215 datasheet, PMBD914,215 pinout, PMBD914,215 application, or PMBD914,215 equivalent, this discrete diode supports critical timing-sensitive switching in serial data lines, level-shifting circuits, and ESD-protected I/O buffers where low capacitance (Cd ≤ 1.5 pF) and minimal leakage (<25 nA at 25 V) are essential.

Technical Context

The PMBD914,215 employs planar silicon technology to achieve sub-4 ns reverse recovery under IF = 10 mA / IR = 10 mA test conditions, enabling clean transitions in >100 MHz digital edge applications. Its anode–cathode–NC pinning isolates the cathode terminal for optimized thermal path to PCB copper, supporting 250 mW total power dissipation at Tamb ≤ 25 °C.

With junction-to-ambient thermal resistance of 500 K/W on FR4 and Cd = 1.5 pF at 0 V/1 MHz, it maintains signal integrity in high-frequency sampling circuits and protects microcontroller GPIOs without introducing parasitic loading. The device operates across –55 °C to +150 °C ambient, meeting automotive under-hood thermal requirements.

Key Specifications

Pinout & Package

Encapsulated in SOT23 (TO-236AB), a 3-terminal surface-mount plastic package measuring 2.9 mm × 1.3 mm × 1.0 mm with 1.9 mm lead pitch and tin-plated terminations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAT54C,215 and 1N4148W,115, the PMBD914,215 uniquely combines 100 V rating, 4 ns trr guarantee, and AEC-Q101 qualification in a single-diode SOT23 - making it the only option for automotive CAN FD protection and industrial 48 V signal conditioning where both speed and ruggedness are mandatory.

Availability

PMBD914,215 is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial PLC I/O modules, and medical patient-monitoring front-end signal chains requiring stable component supply and long-term lifecycle support.

Supply support for PMBD914,215 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 - delivering discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

The PMBD914,215 belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for signal integrity preservation in automotive networking, power management, and real-time control systems.

FAQ

Is PMBD914,215 suitable for bidirectional ESD protection?

No - the PMBD914,215 is a unidirectional diode with anode and cathode terminals; it provides clamping only from cathode to anode (forward-biased) or blocks in reverse. For bidirectional protection, a dedicated TVS diode like PESD5V0S1BA should be used instead.

What is the maximum allowable PCB trace length between PMBD914,215 and protected IC pin?

To preserve 4 ns trr performance, keep the cathode-to-ground trace length under 8 mm on 1 oz copper with 0.25 mm width, and place the diode within 2 mm of the protected pin. Longer traces add inductance that degrades transient response and increases ringing.

Does the n.c. pin (Pin 2) require grounding or floating in layout?

Pin 2 must remain unconnected - it is internally isolated with no bond wire or die connection. Grounding or routing to any net may induce parasitic coupling, reduce breakdown margin, or compromise thermal performance due to unintended current paths.

Can PMBD914,215 replace 1N4148 in existing designs without modification?

Yes, for most SOT23 footprints - both share identical mechanical dimensions and pinout. However, verify that the 100 V V_R and 4 ns trr meet system requirements, as 1N4148 typically specifies only 75 V and 4–8 ns trr, and lacks AEC-Q101 qualification.