Nexperia USA Inc. PMBD354,215

Overview

PMBD354,215 from NXP Semiconductors is a planar Schottky barrier double diode in SOT23 package, configured as two anodes sharing a common cathode (A1/K2 and A2/K1), with 4 V reverse voltage rating, 30 mA forward current capability, and matched 1 pF capacitance at 1 MHz/0 V. It serves in UHF mixer and phase detection circuits where low forward voltage (600 mV @ 10 mA) and tight capacitance matching (±0.1 pF) are critical.

For engineers reviewing the PMBD354,215 datasheet, PMBD354,215 pinout, PMBD354,215 application, or PMBD354,215 equivalent, key selection criteria include dual-diode topology, SOT23 footprint compatibility, sub-1 pF capacitance matching, low VF at microamp bias, and thermal resistance of 500 K/W under standard SMT mounting.

Technical Context

The PMBD354,215 integrates two independent Schottky diodes on a single silicon die with shared terminal configuration (Pin 3 = common anode A1/K2; Pin 1 = cathode K1; Pin 2 = anode A2). Its planar construction enables stable high-frequency performance up to UHF bands.

Capacitance matching (ΔCd ≤ 0.1 pF) and low reverse leakage (0.25 μA @ 3 V) are achieved via monolithic fabrication and process-controlled junction geometry, supporting precise signal sampling and balanced modulator operation without external trimming.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-lead, 1.3 mm × 2.9 mm × 1.1 mm body, gull-wing leads, standard JEDEC outline.

Key Features

Applications

Availability

PMBD354,215 is available at Aetrix Electronics and suitable for UHF mixer designs, RF sampling systems, and phase-sensitive modulator applications requiring stable component supply and consistent SOT23 packaging.

Supply support for PMBD354,215 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

The PMBD354,215 belongs to NXP's discrete RF Schottky diode product line, engineered specifically for high-frequency signal processing where capacitance matching, low VF, and SMT reliability are essential.

FAQ

What is the pin configuration of PMBD354,215?

Pin 1 is cathode K1, Pin 2 is anode A2, and Pin 3 is the common terminal (A1/K2). This configuration supports both series and shunt-connected dual-diode topologies in RF mixers and modulators, and is verified in NXP's SOT23 outline drawing MGC487 and data sheet Figure 1.

Can PMBD354,215 replace BAT54S in UHF applications?

No - BAT54S has a different pinout (common cathode) and higher Cd (2–3 pF) with no specified matching. PMBD354,215's 1 pF matched capacitance and common-anode/cathode flexibility make it unsuitable as a drop-in replacement; circuit redesign is required for impedance and bias alignment.

What is the maximum operating junction temperature?

The absolute maximum junction temperature (Tj) is 100 °C per the IEC 60134 limiting values table. Operation above this threshold risks irreversible degradation of Schottky barrier integrity and increased reverse leakage, especially under sustained 30 mA forward bias.

How does capacitance matching affect phase detection accuracy?

With ΔCd ≤ 0.1 pF at 1 MHz, PMBD354,215 limits phase imbalance to <0.5° across 100 kHz–10 MHz in quadrature detectors. This directly enables <0.1° RMS phase error in closed-loop PLLs when used in analog multiplier-based phase comparators.