Nexperia USA Inc. 1PS302,115

Overview

1PS302 from Nexperia is a dual high-speed switching diode in SOT323 (SC-70) package, configured as a common-cathode pair with shared cathode on pin 3. It delivers trr ≤4 ns reverse recovery time, Cd ≤1.5 pF capacitance, and VRRM = 85 V, enabling use in compact DC-DC converter snubbers and high-frequency signal routing.

For engineers reviewing the 1PS302 datasheet, 1PS302 pinout, 1PS302 application, or 1PS302 equivalent, key selection criteria include its AEC-Q101 qualification, dual-diode topology with shared cathode, low-junction-capacitance performance at 1 MHz, and thermal resistance Rth(j-a) = 415 K/W in free air.

Technical Context

The 1PS302 integrates two independent silicon switching diodes in a single SOT323 package with pin 3 serving as the common cathode terminal-enabling compact dual-path clamping or steering without external interconnects. Its trr ≤4 ns is measured under defined IF/IR switching conditions (10 mA ↔ 10 mA, RL = 100 Ω), and Cd = 1.5 pF is specified at f = 1 MHz and VR = 0 V.

Thermal design relies on Rth(j-sp) = 200 K/W to solder point and maximum Tj = 150 °C, with Ptot = 300 mW at Tamb ≤25 °C. The device operates across −55 °C to +150 °C ambient, supporting automotive under-hood environments per AEC-Q101 stress qualification.

Key Specifications

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.15 mm footprint, 0.4 mm nominal height, 3-terminal configuration with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAT54C and PMEG3005CEJ, the 1PS302 uniquely combines AEC-Q101 qualification, dual-common-cathode integration, sub-4 ns trr, and sub-2 pF capacitance-making it the only choice for space-constrained, high-speed automotive and industrial signal protection where both topology and timing are critical.

Availability

1PS302 is available at Aetrix Electronics and suitable for automotive infotainment power management, industrial PLC I/O protection, and high-frequency communications equipment requiring stable component supply and long-term lifecycle assurance.

Supply support for 1PS302 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 1PS302 belongs to Nexperia's AEC-Q101-qualified high-speed switching diode product line, engineered specifically for automotive powertrain and chassis systems demanding robust transient immunity and minimal signal distortion.

FAQ

What is the maximum junction temperature for continuous operation of the 1PS302?

The absolute maximum junction temperature (Tj) is 150 °C, validated per IEC 60134 limiting values. Continuous operation requires thermal design ensuring Tj stays below this limit-achievable up to 300 mW dissipation at Tamb ≤25 °C, with linear derating to zero at 150 °C ambient using Rth(j-a) = 415 K/W.

Is the 1PS302 pin-compatible with other SOT323 dual diodes like the BAS16X?

No-the 1PS302 uses a unique common-cathode pinout (anode–cathode–cathode), whereas BAS16X variants employ independent anode/cathode pairs (anode–cathode–anode). Substitution requires PCB layout revision and functional verification of shared-cathode behavior in the target circuit.

How does the 1PS302 perform under elevated temperature conditions?

At Tj = 150 °C, IR increases to 100 µA at VR = 80 V (vs. 0.5 µA at 25 °C), and VF rises by ~100 mV across operating current range. These shifts are fully characterized in Table 7 and must be accounted for in high-temperature bias networks and precision clamping designs.

Can the 1PS302 be used in AC-coupled RF signal paths?

Yes-its Cd = 1.5 pF at 1 MHz and low series resistance support use in 2.4 GHz detector inputs and sub-GHz antenna switch bias networks. However, capacitance varies with reverse voltage; at VR = 25 V, Cd drops to ~0.8 pF, requiring impedance recalibration in tuned circuits.