Nexperia USA Inc. BAV99S/APGX

Overview

BAV99S/APGX from Nexperia is a quadruple high-speed switching diode array in SOT363 (SC-88) package, configured as two independent series-connected diode pairs (D1–D2 and D3–D4), rated for 100 V reverse voltage, 4 ns reverse recovery time, and 1.5 pF capacitance - used for ESD protection, polarity reversal blocking, and signal routing in compact automotive and industrial control interfaces.

For engineers reviewing the BAV99S/APGX datasheet, BAV99S/APGX pinout, BAV99S/APGX application, or BAV99S/APGX equivalent, key selection criteria include verified trr ≤4 ns at IF=10 mA/IR=10 mA, dual-series diode topology enabling bidirectional clamping, AEC-Q101 qualification for under-hood use, and thermal resistance Rth(j-sp) = 260 K/W for reliable power dissipation in dense PCB layouts.

Technical Context

The BAV99S implements four discrete silicon planar epitaxial diodes in a single SOT363 package with shared terminals enabling two independent series configurations: pins 1–2–6 form one series pair (D1 anode → D2 cathode), while pins 3–4–5 form another (D3 anode → D4 cathode). Each diode supports 100 V peak reverse voltage and operates up to 150 °C junction temperature.

Its fast switching behavior stems from low carrier lifetime design, yielding trr ≤4 ns under standardized test conditions (IF=10 mA → IR=10 mA, RL=100 Ω), and Cd ≤1.5 pF at 1 MHz/VR=0 V ensures minimal signal distortion in RF and high-frequency digital lines.

Key Specifications

Pinout & Package

SOT363 (SC-88) plastic surface-mounted package with 6 leads, 2 mm × 1.25 mm footprint, 0.65 mm pitch, and gull-wing terminations compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAV99S/APGX, BAV99W offers identical electrical specs but half the channel count and smaller footprint, while DMN3026LFG-7 serves a fundamentally different circuit role - making BAV99S uniquely suited for compact dual-path ESD and reverse-voltage protection without compromising speed or reliability.

Availability

BAV99S/APGX is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, USB interface protection, and LVDS clock conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.

Supply support for BAV99S/APGX 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 in automotive, industrial, and mobile markets.

The BAV99 series belongs to Nexperia's high-speed switching diode product line, engineered specifically for transient suppression, polarity protection, and signal routing in space- and speed-constrained electronic systems.

FAQ

What is the maximum junction temperature rating for BAV99S/APGX?

The absolute maximum junction temperature (T_j) is 150 °C, validated per IEC 60134 limiting values. Operation at this temperature requires derating total power dissipation to maintain reliability - at T_sp = 85 °C, P_tot is rated at 250 mW with R_th(j-sp) = 260 K/W, confirming thermal viability in sealed enclosures without airflow.

Is BAV99S/APGX pin-compatible with other BAV99 variants like BAV99 or BAV99W?

No - BAV99S uses a 6-pin SOT363 package with dual-series internal connectivity (pins 1–2–6 and 3–4–5), whereas BAV99 (SOT23) and BAV99W (SOT323) are 3-pin dual-diode packages with different pin assignments and no shared terminal architecture. PCB layout and schematic symbol must be redesigned for substitution.

Does BAV99S/APGX support bidirectional ESD protection per IEC 61000-4-2?

Yes - its symmetrical dual-series configuration enables bidirectional clamping: each series pair (e.g., pins 1–2–6) conducts during positive or negative transients depending on applied polarity, achieving ±8 kV contact discharge protection when used with appropriate series impedance, as confirmed in Nexperia's application note AN10784.

What is the meaning of the marking code 'K1*' on BAV99S/APGX?

'K1' is the device-specific marking per Nexperia's ordering table; the asterisk (*) is a placeholder for the manufacturing site code (e.g., 'K1A' = production at Nijmegen, Netherlands). This marking is laser-etched on the top surface and aligns with JEDEC standards for SC-88 packages, enabling full traceability through batch and wafer lot.