Nexperia USA Inc. BAS316,115

Overview

BAS316 from Nexperia is a high-speed switching diode in SOD323 (SC-76) package, designed for fast signal routing and low-loss rectification in compact PCB layouts. It delivers trr ≤ 4 ns reverse recovery time, VR = 100 V maximum reverse voltage, and IF = 250 mA continuous forward current at Tj = 25 °C, enabling use in 5 V–24 V digital logic interface clamping and DC-DC converter freewheeling paths.

For engineers reviewing the BAS316 datasheet, BAS316 pinout, BAS316 application, or BAS316 equivalent, key selection criteria include verified trr ≤ 4 ns performance under IF = 10 mA / IR = 10 mA test conditions, Cd = 1.5 pF capacitance at VR = 0 V / f = 1 MHz, and thermal resistance Rth(j-sp) = 150 K/W to cathode solder point - critical for thermal-aware layout in space-constrained power management circuits.

Technical Context

The BAS316 employs a planar epitaxial silicon structure optimized for minimal minority-carrier storage, directly enabling its ≤4 ns trr with 1 mA measurement threshold under standardized RL = 100 Ω test setup. Its low leakage (IR ≤ 0.5 µA at VR = 80 V, Tj = 25 °C) and stable VF (≤855 mV at IF = 10 mA) support reliable level-shifting in mixed-voltage I/O buffers.

Thermal design relies on direct junction-to-solder-point conduction (Rth(j-sp) = 150 K/W), requiring FR4 PCB mounting with tin-plated copper and standard SOD323 footprint per Figure 8. The device operates across –65 °C to +150 °C ambient, with derated IF above 25 °C per Fig. 1's temperature-dependent VF curves.

Key Specifications

Pinout & Package

SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode tab solder point as thermal interface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4148W-7-F and BAS16,115, the BAS316 uniquely combines 4 ns trr, 1.5 pF Cd, and 150 K/W thermal resistance - making it the sole option among these three for thermally constrained, >100 MHz signal-path applications requiring sub-1 V forward drop.

Availability

BAS316 is available at Aetrix Electronics and suitable for high-speed logic clamping, DC-DC converter freewheeling, and RS-485 data line protection requiring stable component supply across automotive infotainment, industrial PLC I/O modules, and medical sensor interfaces.

Supply support for BAS316 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-qualified and industrial-grade components.

The BAS316 belongs to Nexperia's high-speed switching diode product line, engineered specifically for signal integrity preservation and thermal efficiency in space-limited power management and interface circuits.

FAQ

What is the maximum allowable peak forward current for BAS316?

The non-repetitive peak forward current (IFSM) is 4 A for tp = 1 µs square wave pulses at Tj(init) = 25 °C, decreasing to 1 A at tp = 1 ms and 0.5 A at tp = 1 s per Table 5. This rating assumes FR4 PCB mounting with single-side copper and standard SOD323 footprint - exceeding these conditions risks permanent junction damage.

How does BAS316's thermal resistance impact PCB layout?

Rth(j-sp) = 150 K/W specifies temperature rise from junction to cathode solder point, not ambient. To maintain Tj ≤ 150 °C at 400 mW Ptot, the cathode pad must be connected to ≥10 mm² of 35 µm copper with no thermal relief - Figure 8's reflow footprint (0.6 mm × 0.5 mm lands) is mandatory for achieving this value.

Is BAS316 qualified for automotive applications?

No. Per Revision History Section 14, BAS316 was explicitly changed to non-automotive qualification in v.7 (2022). Automotive alternatives are designated with "-Q" suffix (e.g., BAS316-Q) and require separate qualification documentation - BAS316 must not be used in safety-critical or AEC-Q101-compliant systems.

What test conditions define the 4 ns trr specification?

trr = 4 ns is measured under IF = 10 mA forward bias, IR = 10 mA reverse step, RL = 100 Ω load, IR(meas) = 1 mA threshold, and Tamb = 25 °C per Figure 5 test circuit. Input pulse rise time is tr = 0.6 ns, and oscilloscope bandwidth must exceed 1 GHz to capture the full recovery waveform without distortion.