Nexperia USA Inc. 1PS70SB15,115

Overview

1PS70SB15 from Nexperia is a dual Schottky barrier diode in common-cathode configuration, housed in an SOT323 (SC-70) package. It delivers 400 mV forward voltage at 10 mA, 30 V reverse voltage rating, and 10 pF capacitance at 1 V/1 MHz - optimized for ultra-high-speed switching and voltage clamping in automotive signal integrity circuits.

For engineers reviewing the 1PS70SB15 datasheet, 1PS70SB15 pinout, 1PS70SB15 application, or 1PS70SB15 equivalent, key selection criteria include low VF for power-sensitive bias networks, AEC-Q101 qualification for under-hood deployment, and common-cathode topology enabling compact dual-rail protection in space-constrained PCB layouts.

Technical Context

This dual Schottky diode integrates a guard ring for ESD and transient stress protection, supporting bidirectional line termination with matched forward characteristics across both anodes. Its planar junction structure ensures stable VF over temperature (240–800 mV from 0.1 to 100 mA) and low leakage (≤2 µA at 25 V).

The device operates within −55 °C to +150 °C ambient range, with 150 °C maximum junction temperature and 625 K/W junction-to-ambient thermal resistance on standard FR4. Its 10 pF capacitance at 1 V enables <1 ns switching in high-frequency data lines.

Key Specifications

Pinout & Package

Package: SOT323 (SC-70), 3-lead surface-mount plastic package with 1.3 mm × 1.8 mm footprint and 0.4 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Schottky diode applications.

Compared with NSR20F30HT1G and VS-2EDH03-M3/84A, the 1PS70SB15 uniquely balances AEC-Q101 compliance, 10 pF capacitance, and 400 mV VF in the smallest SOT323 footprint - making it optimal for automotive infotainment and ADAS sensor interfaces where board space and signal fidelity are critical.

Availability

1PS70SB15 is available at Aetrix Electronics and suitable for automotive CAN bus protection, USB 2.0 clamping, and LVDS interface termination requiring stable component supply and full traceability.

Supply support for 1PS70SB15 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 components and advanced packaging.

The 1PS70SB15 belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for signal integrity protection in automotive communication buses and high-speed industrial interfaces.

FAQ

Is the 1PS70SB15 suitable for bidirectional ESD protection on differential pairs?

Yes. Its common-cathode dual-Schottky configuration allows symmetric clamping to VCC and GND when used with appropriate pull-up/pull-down resistors. The 10 pF capacitance and matched VF ensure balanced response on both lines, validated per IEC 61000-4-2 Level 4 for automotive-grade ESD immunity.

What is the maximum continuous forward current per diode at 85 °C ambient?

At Tamb = 85 °C, the maximum continuous forward current is derated to approximately 140 mA per diode, based on its 200 mW total power dissipation limit and 625 K/W thermal resistance. This assumes standard FR4 PCB mounting with single-sided copper and tin plating per datasheet condition.

Does the integrated guard ring affect solder reflow profile requirements?

No. The guard ring is a process-level junction feature and does not alter thermal mass or solderability. The device follows standard JEDEC J-STD-020D reflow profiles for SC-70 packages, with peak temperature ≤260 °C and time above liquidus 60–90 seconds - identical to non-guard-ring variants in the same package.

Can the 1PS70SB15 replace a single discrete Schottky diode in unidirectional applications?

Yes, but with layout consideration: Pin 1 (A1) and Pin 3 (K) form one functional diode; Pin 2 (A2) remains unused and must be left floating or grounded depending on noise sensitivity. Unused anode should not be shorted to cathode, as this would create a parasitic path and degrade leakage performance.