Diodes Incorporated NIS5135MN1-FN-7

Overview

NIS5135MN1-FN-7 from Diodes Incorporated is a latching-type resettable electronic fuse with integrated 30 mΩ NMOS power device, 3.1–18 V input range, 3.6 A continuous current rating at +25°C, overvoltage clamp (6.65 V), and thermal shutdown at +175°C. It serves as a self-protected load switch in HDD/SSD power rails where robust fault recovery and output voltage ramp control are required.

For engineers reviewing the NIS5135MN1-FN-7 datasheet, NIS5135MN1-FN-7 pinout, NIS5135MN1-FN-7 application, or NIS5135MN1-FN-7 equivalent, key selection criteria include latching thermal behavior, dv/dt-controlled startup ramp, Kelvin vs. direct current sensing configuration, and compatibility with 5V/12V industrial power domains requiring high-reliability overcurrent protection without external sense resistors.

Technical Context

The NIS5135MN1 integrates a low-R_DS(ON) NMOS buffer with internal current-sense FET architecture, enabling precise overload detection via external ILIMIT resistor without inserting resistance into the main load path. Its dv/dt pin controls linear output voltage ramp time (typ. 2 ms open-circuit) using an internal 90 µA current source charging an external capacitor.

Thermal shutdown is latching (NIS5135MN1) - requiring Enable/Fault pin toggle or power cycle to resume operation - and coexists with undervoltage lockout (3.6 V threshold, 0.4 V hysteresis) and overvoltage clamp (6.65 V). The Enable/Fault pin provides tri-state logic interface and fault signaling via mid-voltage level (0.82–1.95 V) during thermal events.

Key Specifications

Pinout & Package

Package: U-DFN3030-10 (3.0 mm × 3.0 mm, 0.6 mm height, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS25940LARVCR and AP22653WU-7, the NIS5135MN1-FN-7 uniquely combines latching thermal response, adjustable current limit, overvoltage clamping, and dv/dt ramp control in a thermally optimized 3×3 mm package - making it optimal for storage and industrial applications demanding deterministic fault handling and robust transient immunity.

Availability

NIS5135MN1-FN-7 is available at Aetrix Electronics and suitable for hard disk drives, solid state drives, and motherboard power management systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.

Supply support for NIS5135MN1-FN-7 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and protection applications.

The NIS5135 belongs to Diodes' eFuse product line, engineered specifically for high-reliability overcurrent and overvoltage protection in storage, computing, and industrial power subsystems - emphasizing latch-mode safety, thermal robustness, and design flexibility.

FAQ

What is the difference between NIS5135MN1-FN-7 and NIS5135MN2-FN-7?

The NIS5135MN1-FN-7 implements latching thermal shutdown: once triggered, it remains off until the Enable/Fault pin is actively pulled low then released, or input power is cycled. In contrast, the MN2 variant auto-restarts after die temperature drops by 45°C. Both share identical overvoltage clamp, current limit architecture, and pinout - only thermal recovery behavior differs.

How is the current limit set on the NIS5135MN1-FN-7?

The current limit is set by connecting a resistor between any Source pin and the ILIMIT pin. For example, a 11 Ω resistor yields a typical short-circuit limit of 3.1 A. The relationship is inverse: lower resistance increases trip current. The datasheet provides curves for both direct and Kelvin sensing configurations, with Kelvin offering higher accuracy by excluding bond-wire resistance.

Can the NIS5135MN1-FN-7 be used with 12V input supplies?

Yes - the NIS5135MN1-FN-7 operates across 3.1 V to 18 V input range and includes an overvoltage clamp at 6.65 V. When used with 12 V input, the clamp activates only during transients exceeding that threshold; steady-state operation proceeds normally. Ensure thermal design accommodates higher I²R losses at elevated voltage and current.

Is the NIS5135MN1-FN-7 recommended for new designs?

No - Diodes Incorporated explicitly marks the NIS5135 series as "NOT RECOMMENDED FOR NEW DESIGN" in its datasheet. This indicates active obsolescence planning; while currently available and supported, designers should evaluate migration paths such as the TPS2594x or AP2265x families for long-term projects requiring extended lifecycle assurance.