Nexperia USA Inc. NPS3102AGBJ

Overview

NPS3102AGBJ from Nexperia is a 12 V, 17 mΩ, 13.5 A resettable electronic fuse (eFuse) in a DFN3030-10 (SOT8037-1) package. It integrates a low-R_ON pass MOSFET, programmable current limiting (2–13.5 A), output voltage clamping (15 V), thermal shutdown with fault reporting, and dV/dt-controlled soft-start. It protects downstream loads in server power rails and SSD/HDD hot-swap circuits against overvoltage, overcurrent, short circuit, and inrush.

For engineers reviewing the NPS3102AGBJ datasheet, NPS3102AGBJ pinout, NPS3102AGBJ application, or NPS3102AGBJ equivalent, key selection criteria include adjustable current limit via ILIM resistor, EN/FLT bidirectional fault-enable interface, thermal latch-off behavior (NPS3102A variant), real-time current monitoring via ILIM pin voltage, and 2 µs short-circuit response time.

Technical Context

The NPS3102AGBJ implements a monolithic eFuse architecture with integrated charge-pump gate driver, UVLO (7.8–8.9 V rising threshold), and junction temperature sensing (TSD = 150–200 °C). Its control logic continuously monitors IN–OUT differential voltage and ILIM pin current to enforce VOVC (15 V clamp) and IILIM (programmable 2–13.5 A limit) with hysteretic regulation.

Soft-start slew rate is actively regulated by comparing dV/dt of OUT to a reference derived from an external capacitor at the dVdt pin; response is dynamically adjusted via strong/weak charge pump modes. The EN/FLT pin operates as a 3-state bidirectional node-internally pulled up to VIPU (2.2–2.5 V) when enabled, driven to VFAULT (0.7–1.3 V) during thermal shutdown, and pulled low (<0.4 V) to force disable.

Key Specifications

Pinout & Package

Package: DFN3030-10 (SOT8037-1), leadless plastic, 3.0 × 3.0 × 0.75 mm, 10-terminal footprint with exposed thermal pad (GND-connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse applications.

Compared with BTS50080-1TAD and TPS25982L, the NPS3102AGBJ delivers superior analog simplicity - no MCU or PMBus required - while offering precise dV/dt control and real-time current telemetry via a single resistor and ADC channel, ideal for cost-sensitive, high-reliability 12 V infrastructure.

Availability

NPS3102AGBJ is available at Aetrix Electronics and suitable for server power distribution, SSD hot-swap, and HDD spindle protection requiring stable component supply across extended product lifecycles.

Supply support for NPS3102AGBJ 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 standard products, with leadership in logic, discretes, MOSFETs, and power management ICs.

The NPS3102 series belongs to Nexperia's eFuse portfolio designed specifically for robust, analog-first 12 V system protection - emphasizing latch-off safety, minimal external components, and seamless integration into space-constrained server and storage platforms.

FAQ

What is the difference between NPS3102AGBJ and NPS3102BGB?

The NPS3102AGBJ is the latch-off variant: it remains disabled after thermal shutdown until the EN/FLT pin is toggled or the IN supply is cycled. In contrast, NPS3102BGB features auto-retry - it automatically attempts re-enabling once junction temperature falls below (TSD − THYST). Both share identical electrical specs, pinout, and package; only fault recovery behavior differs.

How do I calculate the ILIM resistor value for a desired current limit?

Use the formula R_LIM = (1.215 V) / I_LIM, where 1.215 V is the nominal ILIM pin reference voltage. For example, for 5.5 A limit: R_LIM = 1.215 / 5.5 ≈ 221 Ω → select nearest E96 value (221 Ω or 226 Ω). Confirm final setting using Fig. 12 (IILIM vs RLIM) and derate per Fig. 13 for ambient temperature.

Can the dVdt pin be left unconnected for fastest startup?

Yes - leaving dVdt floating results in minimum 1 ms output rise time, as the internal charge pump defaults to strong mode. However, this removes slew-rate control and increases inrush stress. A 4.7 nF minimum capacitor is recommended for predictable soft-start; larger values (e.g., 10–33 nF) yield 1–3 ms rise times per Fig. 14 and application note guidance.

Is the EN/FLT pin compatible with 3.3 V microcontroller GPIOs?

Yes - EN/FLT operates safely with 3.3 V logic. Pulling it low (<0.4 V) disables the device; its high state (VIPU = 2.2–2.5 V) is compatible with 3.3 V ADC inputs. When monitoring fault status, use a voltage divider only if ADC full-scale is <2.2 V; otherwise, direct connection suffices since leakage is <1 µA and VFAULT (0.7–1.3 V) is cleanly distinguishable.