Nexperia USA Inc. PMLL4148L,115

Overview

PMLL4148L,115 from Nexperia is a single high-speed switching diode in a hermetically sealed glass SOD80C surface-mount package, designed for fast signal routing and polarity protection. It delivers trr ≤4 ns reverse recovery time, VRRM = 100 V peak reverse voltage, and IFRM = 450 mA repetitive forward current, with VF = 1 V at IF = 50 mA - enabling use in 50 MHz+ digital logic clamping and DC-DC flyback snubbing circuits.

For engineers reviewing the PMLL4148L,115 datasheet, PMLL4148L,115 pinout, PMLL4148L,115 application, or PMLL4148L,115 equivalent, key selection criteria include verified 4 ns trr performance under IF=10 mA → IR=60 mA switching, cathode-marked SOD80C footprint compatibility, and thermal resistance Rth(j-a) = 350 K/W on FR4 PCBs - critical for high-density power management layouts.

Technical Context

This diode employs planar silicon technology optimized for minimal minority-carrier storage, directly enabling its 4 ns trr specification under standardized test conditions (IF=10 mA to IR=60 mA, RL=100 Ω, measurement at IR=1 mA). Its 100 V VRRM rating supports operation across 24 V and 48 V industrial bus systems without derating.

The SOD80C package features a 3.3–3.7 mm body length, 1.45–1.60 mm width, and 0.3 mm profile, with tin-plated copper leads compatible with standard reflow profiles. Junction-to-ambient thermal resistance is specified at 350 K/W in free air on FR4 with single-sided copper - defining maximum continuous power dissipation as 500 mW at Tamb = 25 °C.

Key Specifications

Pinout & Package

The PMLL4148L,115 uses a 2-terminal SOD80C hermetically sealed glass package measuring 3.3–3.7 mm × 1.45–1.60 mm × 0.3 mm, with cathode identified by a visible band marking on the glass body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4148W-7-F and BAS16,215, the PMLL4148L,115 offers superior thermal resistance (350 vs. 500/400 K/W) and higher VRRM (100 V), making it optimal for compact 48 V industrial power rails where heat dissipation and voltage margin are critical.

Availability

PMLL4148L,115 is available at Aetrix Electronics and suitable for high-speed logic clamping, reverse polarity protection, flyback diode duty, and RF detector circuits requiring stable component supply across automotive infotainment, industrial PLC, and IoT sensor production programs.

Supply support for PMLL4148L,115 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

The PMLL4148L belongs to Nexperia's high-speed switching diode product line, engineered specifically for signal integrity preservation and robust transient handling in space-constrained industrial and communications equipment.

FAQ

What is the maximum junction temperature for continuous operation?

The PMLL4148L,115 has a rated maximum junction temperature of 200 °C, verified per IEC 60134 limiting values. This allows uninterrupted operation in ambient temperatures up to +125 °C when mounted on FR4 with standard copper pour, provided power dissipation remains ≤500 mW and thermal resistance stays within 350 K/W.

Is the SOD80C package compatible with standard reflow soldering profiles?

Yes - the SOD80C package is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C for ≤10 seconds. The 0.3 mm profile and tin-plated leads ensure reliable wetting and coplanarity on standard 4 mm pitch tape-and-reel feeders used in high-speed pick-and-place systems.

How does the 4 pF diode capacitance affect high-frequency signal routing?

At 1 MHz, the 4 pF capacitance introduces <0.5 Ω reactance, making it electrically transparent on 50 Ω transmission lines up to 1 GHz. This enables use in 100 Mbps Ethernet PHY clamping and sub-GHz RF detector front-ends without measurable signal attenuation or phase shift.

Can PMLL4148L,115 replace older 1N4148 variants in existing designs?

Yes - it maintains identical electrical characteristics (trr ≤4 ns, VF ≈1 V, VRRM ≥100 V) and mechanical footprint (SOD80C matches legacy DO-35 and SOD-123 outlines in pad layout). No PCB redesign is needed, and the hermetic glass construction improves long-term reliability over plastic-packaged alternatives.