Nexperia USA Inc. BAT17,215

Overview

BAT17 from Nexperia is a planar Schottky barrier diode in SOT23 package, designed for high-frequency signal routing and mixing. It delivers 1 pF capacitance at 0 V reverse bias, 600 mV forward voltage at 10 mA, and 0.25 μA reverse leakage at 3 V - enabling low-distortion UHF mixer and phase detection circuits in compact RF front-ends.

For engineers reviewing the BAT17 datasheet, BAT17 pinout, BAT17 application, or BAT17 equivalent, key selection criteria include its 1 pF junction capacitance, 600 mV VF @ 10 mA, 4 V reverse voltage rating, SOT23 footprint compatibility, and verified performance in 900 MHz noise-critical sampling paths.

Technical Context

The BAT17 employs a planar Schottky junction optimized for minimal parasitic capacitance and fast switching response. Its 1 pF capacitance at 0 V and 15 Ω forward resistance at 5 mA support stable impedance matching in UHF signal paths up to 900 MHz.

Thermal resistance of 500 K/W (junction-to-ambient) and 100 °C maximum junction temperature define its continuous operation envelope under 30 mA forward current, with reverse leakage tightly controlled at ≤1.25 μA up to +60 °C ambient.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), plastic surface-mounted, 3-lead package with 1.3 mm × 2.9 mm footprint and 1.1 mm height.

Key Features

Applications

Availability

BAT17 is available at Aetrix Electronics and suitable for UHF mixer design, RF sampling circuit development, and phase-sensitive demodulation requiring stable component supply across industrial and communications product lifecycles.

Supply support for BAT17 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 leader in discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, consumer, and wearable markets with high-reliability, high-volume components.

The BAT17 belongs to Nexperia's Schottky diode product line, engineered specifically for high-frequency signal conditioning - emphasizing low capacitance, fast switching, and stable RF performance in compact SMD packages.

FAQ

Is BAT17 suitable for 1 GHz operation?

No - BAT17 is characterized up to 900 MHz, where its 8 dB noise figure and 1 pF capacitance are specified. At 1 GHz, junction capacitance and series resistance cause measurable degradation in noise and matching; use BAT17W or BAP64-03 for validated 1 GHz performance.

What is the significance of Pin 2 being 'not connected'?

Pin 2 is internally unconnected and electrically isolated. It must not be soldered or tied to any net on the PCB. Leaving it floating avoids unintended parasitic coupling; grounding or connecting it risks altering RF impedance and increasing thermal resistance in the SOT23 package.

How does BAT17 compare to HSMS-2850 in UHF mixer use?

BAT17 offers lower capacitance (1 pF vs. 1.2 pF) and higher reverse voltage (4 V vs. 3 V), improving isolation and LO drive margin. HSMS-2850 has lower VF (420 mV @ 10 mA) but higher cost and larger SOT-23-6 footprint - BAT17 provides better size/cost/performance balance for space-constrained 35–900 MHz mixers.

Can BAT17 replace BAT54 in general-purpose applications?

No - BAT54 is a dual Schottky diode with different pinout and 30 V VR rating, intended for clamping and level-shifting. BAT17 is single-diode, 4 V VR, optimized for RF signal integrity. Substituting it in digital IO protection or power rail clamping risks premature breakdown and mismatched capacitance.