Infineon Technologies BAT15-05W

Overview

BAT15-05W from Nexperia is a silicon Schottky diode configured as a single, leadless device in SOT323 package, optimized for DBS mixer applications up to 12 GHz, phase detection, and RF modulation. It features low barrier height (VF = 0.23 V typ. @ 10 mA), low noise figure, 4 V reverse voltage rating, 100 mW total power dissipation, and 0.32 pF diode capacitance at 0 V/1 MHz.

For engineers reviewing the BAT15-05W datasheet, BAT15-05W pinout, BAT15-05W application, or BAT15-05W equivalent, key selection criteria include RF performance at X-band frequencies, thermal resistance (RthJS ≤ 850 K/W), forward voltage matching tolerance, junction temperature limit (150 °C), and RoHS-compliant Pb-free packaging.

Technical Context

This Schottky diode employs a low-barrier metal–semiconductor junction enabling high-frequency operation with minimal series resistance and low junction capacitance. Its design targets nonlinear RF functions-specifically mixing, detection, and modulation-where low VF, tight ∆VF control, and stable CT vs. VR behavior are critical.

The SOT323 package provides compact footprint and controlled parasitic inductance (LS = 1.4 nH), supporting impedance-matched 50 Ω RF layouts. Thermal derating curves confirm usable forward current up to 100 mA at case temperatures ≤ 65 °C, aligning with continuous-wave DBS LNB front-end requirements.

Key Specifications

Pinout & Package

Package: SOT323 - surface-mount, leadless, 3-pin outline (2 active terminals + heatsink pad), footprint compatible with JEDEC TO-236AB standard. Dimensions: 1.7 × 1.25 × 0.95 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Compared with HSMS-2850 and SMS7630-061, BAT15-05W delivers balanced trade-off between forward conduction efficiency (VF), junction capacitance (CT), and thermal robustness (RthJS ≤ 850 K/W), making it optimal for cost-sensitive, thermally constrained DBS LNB designs requiring stable 12 GHz operation.

Availability

BAT15-05W is available at Aetrix Electronics and suitable for direct broadcast satellite receivers, RF test instrumentation, and automotive radar sensor front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BAT15-05W 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-grade components and energy-efficient solutions.

The BAT15 series belongs to Nexperia's RF Schottky diode product line, engineered specifically for microwave mixing, detection, and modulation in satellite, wireless infrastructure, and test equipment applications.

FAQ

What is the maximum operating frequency for BAT15-05W in mixer applications?

BAT15-05W is characterized and qualified for reliable operation up to 12 GHz in DBS mixer applications, supported by measured diode capacitance (0.32 pF @ 0 V/1 MHz), differential resistance (5.5 Ω), and published S-parameter data in Nexperia's application notes for Ku-band LNB designs.

Is BAT15-05W suitable for zero-bias detector circuits?

Yes - its low-barrier Schottky structure yields a typical forward voltage of 0.23 V at 10 mA and sub-0.25 V turn-on, enabling sensitive zero-bias detection. Measured ∆VF ≤ 20 mV ensures consistent detector linearity across production lots in phase-locked loop applications.

How does the SOT323 package affect thermal performance?

The SOT323 package achieves RthJS ≤ 850 K/W via its exposed cathode pad, which must be soldered to ≥ 25 mm² of inner-layer copper. Derating curves show 100 mA forward current remains viable up to TS = 65 °C, making it suitable for sealed, passively cooled LNB housings.

Does BAT15-05W require special ESD handling during assembly?

Yes - BAT15-05W is classified as ESD-sensitive (HBM > 2 kV per AEC-Q101). Standard precautions apply: grounded workstations, ionized air, wrist straps, and conductive foam storage. The device lacks integrated protection diodes, so layout-level guarding and transient suppression are recommended in final PCB design.