Nexperia USA Inc. BAS56,215

Overview

BAS56,215 from Nexperia is a dual high-speed switching diode in SOT143B package, with isolated anode-cathode pairs (Pin 4–1 and Pin 3–2), rated for 60 V reverse voltage, ≤6 ns reverse recovery time, and 600 mA repetitive peak forward current. It serves as a compact, AEC-Q101-qualified discrete solution for high-frequency signal routing and clamping in automotive infotainment power rails.

For engineers reviewing the BAS56,215 datasheet, BAS56,215 pinout, BAS56,215 application, or BAS56,215 equivalent, key selection criteria include verified trr ≤6 ns at IF = 400 mA/IR = 400 mA, dual-diode isolation integrity, thermal resistance Rth(j-a) = 500 K/W on FR4 PCB, and SOT143B footprint compatibility with automated SMT assembly.

Technical Context

The BAS56,215 integrates two independent planar silicon diodes in a single 4-pin SOT143B package, with no internal connection between diodes-enabling flexible bidirectional clamping or separate signal path control. Each diode supports 60 V VR and delivers 200 mA continuous forward current at Tamb = 25 °C.

Its 6 ns trr is measured under standardized conditions (IF → IR = 400 mA, RL = 100 Ω, IR = 40 mA), and junction capacitance remains low at 2.5 pF (f = 1 MHz, VR = 0 V), supporting operation up to ~100 MHz in RF detector or fast-switching logic interface roles.

Key Specifications

Pinout & Package

SOT143B is a 4-lead surface-mount plastic package (3.0 × 1.4 × 1.1 mm), optimized for high-density PCB layouts and reflow soldering. Pin 1 and Pin 2 are cathodes; Pin 3 and Pin 4 are anodes-forming two electrically isolated diodes (D1: Pin 4→1; D2: Pin 3→2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAT54S,215 and MMBD7000LT1G, the BAS56,215 uniquely combines AEC-Q101 qualification, guaranteed 6 ns trr maximum, and fully isolated dual-diode architecture-making it the only option for safety-critical automotive signal conditioning where channel independence and transient immunity are mandatory.

Availability

BAS56,215 is available at Aetrix Electronics and suitable for automotive infotainment power clamp, high-speed logic-level translation, and RF detector input protection requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BAS56,215 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 essential semiconductors-including logic, discretes, MOSFETs, and ESD protection devices.

The BAS56,215 belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for automotive and industrial signal integrity applications demanding fast switching, low capacitance, and robust thermal performance in compact SMD packages.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The BAS56,215 has a maximum junction temperature (Tj) rating of 150 °C. For continuous 200 mA forward current operation on FR4 PCB, ambient temperature must be limited to ≤70 °C due to Rth(j-a) = 500 K/W-exceeding this requires active cooling or derating per Figure 5 in the datasheet.

Can BAS56,215 be used in series or parallel configurations?

Each diode is electrically isolated, enabling series connection for higher VR (e.g., 120 V total) if matched devices are used. Parallel use is not recommended-mismatched VF causes current imbalance; no thermal coupling exists between diodes to equalize heating.

Is the 6 ns trr value guaranteed across temperature and process variation?

Yes-the datasheet specifies trr ≤6 ns as a maximum value under defined test conditions (IF/IR = 400 mA, RL = 100 Ω, IR = 40 mA), verified across process corners and temperature extremes per AEC-Q101 stress testing requirements.

Does the SOT143B package support wave soldering?

Yes-Nexperia provides dedicated wave soldering footprints (Figure 10) with 4.6 mm × 2.575 mm solder land dimensions and preferred transport direction alignment. Reflow profile must follow JEDEC J-STD-020 Class 3 guidelines for lead-free processes.