Nexperia USA Inc. BAV99,235

Overview

BAV99,235 from Nexperia is a dual high-speed switching diode in SOT23 package, configured as two independent diodes sharing a common terminal (anode of D1 and cathode of D2 tied to pin 3). It delivers trr ≤ 4 ns reverse recovery time, Cd ≤ 1.5 pF capacitance, and VR = 100 V rating, enabling use in RF detector circuits, ESD-protected signal routing, and compact polarity protection in USB-C power path designs.

For engineers reviewing the BAV99,235 datasheet, BAV99,235 pinout, BAV99,235 application, or BAV99,235 equivalent, this page provides verified pin functions, real-world timing and leakage performance at 25 °C and 150 °C, thermal resistance values for FR4 PCB mounting, and validated alternatives with documented forward voltage and recovery trade-offs.

Technical Context

The BAV99,235 integrates two silicon planar epitaxial diodes in a single SOT23-3 package with shared terminal (pin 3 = K1/A2), forming a compact dual-diode configuration ideal for space-constrained signal steering. Its trr ≤ 4 ns and Cd ≤ 1.5 pF support operation up to ~500 MHz in small-signal switching roles.

It operates within −65 °C to +150 °C ambient range, with Rth(j-a) = 500 K/W (free air) and Rth(j-sp) = 360 K/W (FR4 PCB), and maintains IR ≤ 0.5 µA at VR = 80 V and 25 °C - critical for low-leakage bias networks in precision analog front-ends.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, designed for reflow soldering on FR4 PCBs with standard footprint per Figure 8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAV70,215 and MMBD7000LT1G, the BAV99,235 offers the lowest combined trr/Cd product and lowest IR at 80 V - making it optimal for RF detector front-ends and ultra-low-leakage protection where both speed and signal integrity are critical.

Availability

BAV99,235 is available at Aetrix Electronics and suitable for USB-C power delivery protection, RF envelope detection, and industrial 24 V digital input clamping requiring stable component supply across production lifecycles.

Supply support for BAV99,235 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency-critical applications.

The BAV99 series belongs to Nexperia's high-speed switching diode product line, engineered specifically for low-capacitance, fast-recovery signal routing and protection in space-constrained consumer, industrial, and communications equipment.

FAQ

What is the maximum continuous forward current per diode in the BAV99,235?

The BAV99,235 supports 215 mA per diode under single-diode loaded conditions at Tamb ≤ 25 °C, as defined in its Absolute Maximum Ratings. Derating is required above 25 °C ambient, with full derating to zero at 150 °C junction temperature. This rating assumes FR4 PCB mounting with standard copper area per datasheet footnote [1].

Can the BAV99,235 be used in bidirectional ESD protection applications?

Yes - its dual-diode configuration with shared terminal (pin 3) allows implementation of a low-capacitance bidirectional TVS by connecting pins 1 and 2 to differential signal lines and pin 3 to ground. With Cd ≤ 1.5 pF and trr ≤ 4 ns, it responds rapidly to ESD transients while minimizing signal distortion in high-speed data lines.

How does thermal resistance change when both diodes conduct simultaneously?

When both diodes conduct, total power dissipation remains within the device's 250 mW limit, but junction-to-ambient thermal resistance increases due to localized heating. The datasheet specifies Rth(j-a) = 500 K/W for single-diode loading; simultaneous conduction requires empirical derating - typically 15–20 % reduction in allowable current to maintain Tj ≤ 150 °C on standard FR4.

Is the BAV99,235 qualified for automotive applications?

No - the July 2022 datasheet explicitly states this version is non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, Nexperia offers the BAV99-Q series, which undergoes extended temperature cycling, humidity testing, and failure analysis per AEC standards.