NIS6150MT2TXG - 5V 1A eFuse USB Protection | onsemi
MPN: NIS6150MT2TXG β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.86 | $0.86 |
| 10 | $0.79 | $7.90 |
| 100 | $0.71 | $71.00 |
| 500 | $0.64 | $320.00 |
| 1,000 | $0.58 | $580.00 |
NIS6150MT2TXG Overview
An electronic fuse (eFuse) is a semiconductor-based circuit protection device that replaces traditional polymeric PTC fuses and discrete protection circuitry. Sitting within the power management IC hierarchy (eFuse -> circuit protection IC -> power management IC), an eFuse monitors load current in real time and disconnects the load within microseconds when a fault is detected, then automatically reconnects once the fault clears - eliminating field service and manual reset.
Key features of the NIS6150 include its resettable fuse behavior, which greatly enhances reliability in USB applications from both catastrophic and shutdown failures; a precise 5 V operating rail targeted directly at USB power distribution; a 1 A current rating suitable for standard USB loads; and a compact 3x3 mm WDFN package that conserves board area in portable designs. Compared with a polymer PTC fuse, the eFuse offers faster trip response, tighter current regulation tolerance, and lower voltage drop.
Technically, the NIS6150 integrates a current-sensing element, a control FET, and the protection logic in a single monolithic die. On an overcurrent event it enters a current-limited or latched state (per the manufacturer datasheet) rather than relying on thermal heating of a polymer element, giving predictable, repeatable trip behavior across temperature.
Typical applications include USB port power protection in hubs, chargers, and host peripherals; hot-swap supply rails in set-top boxes and monitors; and general 5 V rail protection in consumer, industrial, and automotive electronic control units.
When designing with this device, verify the maximum fault current capability and follow the datasheet decoupling guidance - place the input and output capacitors close to the IN and OUT pins to keep transient voltage excursions within limits during a fast trip event.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing freshness stated as of 2026-09-14.
Drop-in alternatives for NIS6150MT2TXG β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
NIS6150LT2TXG
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
NIS5135MT2TXBG
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
NIS5135LT2TXBG
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
NIS6150MT2TXG Specifications
| Function | Electronic eFuse (resettable electronic fuse) |
| Nominal Operating Voltage | 5 V |
| Maximum Continuous Output Current | 1 A |
| Package | 10-WDFNW (3x3 mm) |
| Mounting Type | Surface Mount |
| Category | Current Regulation/Management |
| Reset Behavior | Resettable (auto-retry per datasheet) |
| Primary Application | USB power port protection |
NIS6150MT2TXG 10-wdfnw (3x3 mm) Pin Configuration Guide
Pin configuration for NIS6150MT2TXG (10-wdfnw (3x3 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for NIS6150MT2TXG.
Refer to the datasheet for full pin configuration.
Typical Applications
NIS6150MT2TXG is suitable for 6 applications: USB Port Power Protection, USB Hub and Docking Stations, Wall Adapters and Chargers, Set-Top Boxes and Monitors, Industrial Control Unit 5V Rail Protection, Portable and Wearable Electronics.
USB Port Power Protection
The primary application of the NIS6150MT2TXG is overcurrent protection on 5 V USB VBUS rails in hosts, hubs, chargers, and peripherals. Its 1 A rating matches standard USB port current budgets, and the resettable eFuse behavior means a shorted cable or overloaded accessory disconnects the port without permanent failure. Placed directly in series with the VBUS path and decoupled with 10uF-class input and output capacitors, the eFuse isolates the upstream 5 V supply within microseconds of a fault, then auto-restarts when the load normalizes - no fuse replacement or user intervention required.
Recommended
USB Hub and Docking Stations
Multi-port hubs and docking stations must guarantee that a fault on one downstream port never collapses the shared 5 V supply. Assigning one NIS6150MT2TXG per port provides independent, resettable current limiting at 1 A per port; the 3x3 mm WDFNW package lets designers place protection right at each connector. Because the eFuse is monolithic - sense element, control FET, and logic on one die - port-to-port trip consistency is far tighter than discrete PTC fuses, keeping each port inside its USB power budget even under simultaneous load.
Recommended
Wall Adapters and Chargers
Chargers and wall adapters use the NIS6150MT2TXG on the 5 V output cord to survive sustained short circuits at the connector - the most common field failure mode for chargers. When the output is shorted, the eFuse current-limits or latches off, protecting the switching regulator secondary; when the short is removed, the port resets automatically. The low voltage drop of the integrated FET preserves usable output voltage at full 1 A load, and the compact package suits the tight space of adapter enclosures.
Recommended
Set-Top Boxes and Monitors
Set-top boxes, smart TVs, and monitors distribute 5 V to HDMI-connected accessories, USB media ports, and indicator subsystems. The NIS6150MT2TXG guards these auxiliary 5 V branches so a failed accessory or shorted cable trips only the affected branch while the main system stays alive. The 3x3 mm footprint allows per-branch protection next to each connector, and resettable operation eliminates warranty service for user-induced shorts. Designers should size the upstream supply to tolerate the inrush and fault current defined in the onsemi datasheet.
Recommended
Industrial Control Unit 5V Rail Protection
Industrial controllers, sensors, and field accessories frequently run from protected 5 V auxiliary rails exposed to wiring faults and hot-plugged modules. The NIS6150MT2TXG gives each 5 V branch a fast, repeatable 1 A trip point that does not drift with ambient temperature the way polymer PTC fuses do - important in cabinets spanning -20C to +60C. Automatic reset keeps equipment on line after transient faults, reducing unplanned maintenance visits in factories and building-automation installations.
Recommended
Portable and Wearable Electronics
Battery-powered portable devices, wearables, and IoT nodes use the NIS6150MT2TXG to protect charging input and accessory 5 V paths. The 3x3 mm WDFNW package and low profile fit dense PCBs inside small enclosures, while the eFuse prevents a damaged cable or defective accessory from draining or damaging the battery charge circuit. Since USB charging ports are routinely abused in the field, the resettable behavior maintains user experience - a faulted port recovers when the offending load is removed, without returning the device for service.
Recommended
Recommended Products Summary
Engineering reference data for NIS6150MT2TXG β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NIS6150LT2TXG | NIS5135MT2TXBG | NIS5135LT2TXBG |
|---|---|---|---|---|
| Package | 10-WDFNW (3x3 mm) | 10-WDFNW (3x3 mm) - same | 10-WDFNW (3x3 mm) - same | 10-WDFNW (3x3 mm) - same |
| Brand | onsemi | onsemi | onsemi | onsemi |
| Nominal Voltage | 5 V | 5 V | 5 V | 5 V |
| Temperature Grade | M grade per suffix (see datasheet) | L grade per suffix (see datasheet) | M grade per suffix (see datasheet) | L grade per suffix (see datasheet) |
| Reset Behavior | Resettable eFuse | Resettable eFuse | Resettable eFuse | Resettable eFuse |
| Target Application | Standard USB 1 A port protection | Standard USB port protection (extended temp) | USB charging port protection | USB charging port protection (extended temp) |
| Primary Use Case | USB hosts, hubs, chargers | USB hosts, hubs, harsh-environment ports | High-current USB charge ports | High-current USB charge ports, extended temp |
Key Differentiators
- Purpose-built 5 V / 1 A USB eFuse (vs NIS5135MT2TXBG)
- Monolithic integration improves trip consistency (vs polymer PTC fuse (discrete solution))
- Temperature-grade flexibility within same footprint (vs NIS6150LT2TXG)
Design Notes
Follow the onsemi NIS6150 datasheet land pattern for the 10-pin WDFNW 3x3 mm package, including the exposed pad, which must be soldered to a ground pour for thermal dissipation and low-impedance ground return. Place the input capacitor within 2-3 mm of the IN pin and the output capacitor within 2-3 mm of the OUT pin. A solid ground plane under the device minimizes loop inductance during a fast trip event, when di/dt is highest.
Do not treat this eFuse like a slow polymer PTC. Its semiconductor protection acts in microseconds, so the input supply must tolerate the transient fault current defined in the datasheet; an undersized upstream regulator can collapse during a hard short. Also verify the temperature-grade suffix (M vs L) at ordering time - mixing grades across a BOM can cause field failures at temperature extremes. Confirm exact trip and retry behavior in the onsemi datasheet rather than assuming auto-retry.
Estimated: for a 5 V rail at 1 A load, power dissipation is approximately P = I2 x R_ON(equivalent) plus quiescent draw; with the WDFNW 3x3 mm exposed-pad package the junction rise depends on actual R_ON from the datasheet - obtain the on-resistance value from the official datasheet and verify junction temperature against the rated maximum for your ambient. Keep total thermal budget below package limits without external heatsinking by maximizing copper area under the exposed pad.
Compliance Information
Compliance status not explicitly stated in the provided verified web data as of 2026-09-14. Mouser categorization references 'AUTO' for this part; confirm RoHS/REACH/AEC-Q100 status on the onsemi product page before regulated applications.
