TCKE712BNL,RF - 13.2V 5A eFuse IC WSON10 | Toshiba
MPN: TCKE712BNL,RF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.14 | $1.14 |
| 10 | $1.05 | $10.50 |
| 100 | $0.96 | $96.00 |
| 500 | $0.89 | $445.00 |
| 1,000 | $0.83 | $830.00 |
TCKE712BNL,RF Overview
An eFuse IC (electronic fuse) is a type of power-management protection IC that sits in series with a supply rail and disconnects the load when fault conditions such as overcurrent, short circuit, overvoltage, or undervoltage occur. Unlike a one-time fuse, an eFuse can automatically or manually recover after a fault, making it a building block of modern power management IC architectures in servers, storage systems, IoT devices, and general-purpose power supplies.
Key features of the TCKE712BNL include an adjustable overcurrent limit set by a single external resistor, adjustable overvoltage protection (OVP) and undervoltage lockout (UVLO), short-circuit fast-trip protection, and an adjustable output slew rate controlled by an external capacitor, which limits inrush current during hot-plug and capacitive load start-up. The device also integrates reverse current blocking (RCB) and a fault flag output for system-level fault reporting.
Technically, the part operates from a 4.4 V to 13.2 V input range, covering 5 V, 9 V, and 12 V rails from a single orderable device. The internal low-RDS(on) power MOSFET (about 53-56 mOhm) minimizes voltage drop and conduction loss, while a controlled gate-slew architecture keeps source-to-load turn-on monotonic. Thermal shutdown protects the die under sustained fault conditions, and the flag pin signals fault state to the host controller.
Typical applications include server backplane hot-swap protection, SSD and HDD storage rail protection, IoT node power-path protection, USB and 12 V accessory ports, and general-purpose industrial power supplies where a reusable fuse with adjustable trip points is preferred over discrete fuse plus supervisor circuits.
A key design consideration: size the ILIM resistor so the minimum guaranteed current limit exceeds the worst-case load transient, and set the slew-rate capacitor to balance inrush limiting against acceptable startup time; excessive capacitance on the output increases startup duration.
This page synthesizes distributor pricing, same-family drop-in alternatives, practical design notes, and comparison data not consolidated in the manufacturer datasheet, as of 2026-10-19.
Drop-in alternatives for TCKE712BNL,RF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TCKE812BNL,RF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TCKE808BNL,RF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TCKE804BNL,RF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TCKE712ANL,RF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TCKE800BNL,RF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TCKE712BNL,RF Specifications
| Product Type | eFuse IC (electronic fuse, hot swap controller) |
| Input Voltage Range | 4.4 V to 13.2 V |
| Maximum Continuous Current | 3.65 A |
| Peak Current Capability | 5 A |
| On-Resistance (Ron) | 56 mOhm (53 mOhm typ per Toshiba) |
| Overcurrent Limit | Adjustable via external resistor |
| Overvoltage Protection | Adjustable (OVP) |
| Undervoltage Lockout | Yes (UVLO) |
| Short Circuit Protection | Yes |
| Slew Rate Control | Adjustable via external capacitor |
| Reverse Current Blocking | Yes (RCB) |
| Fault Flag Output | Yes (flag output) |
| Thermal Shutdown | Yes |
| Package | WSON10 (10-pin leadless) |
| Mounting Type | Surface Mount |
| Applications | Consumer equipment, server, IoT equipment, storage, general purpose power supply |
TCKE712BNL,RF wson10 (10-pin leadless) Pin Configuration Guide
Pin configuration for TCKE712BNL,RF (wson10 (10-pin leadless) 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 TCKE712BNL,RF.
Refer to the datasheet for full pin configuration.
Typical Applications
TCKE712BNL,RF is suitable for 6 applications: Server Hot-Swap Power Protection, SSD and HDD Storage Rail Protection, IoT Equipment Power-Path Protection, Consumer Equipment DC Input Protection, General-Purpose Industrial Power Supplies, USB and Accessory Port Current Limiting.
Server Hot-Swap Power Protection
Server blades and backplanes require boards to be inserted and removed while 12 V power is live, producing large inrush currents that would otherwise damage connectors and upstream supplies. The TCKE712BNL fits this role because its 4.4 V to 13.2 V input range covers 12 V rails, and its adjustable slew-rate control limits inrush by shaping output voltage ramp with a single external capacitor. The adjustable overcurrent limit via ILIM resistor lets one design cover multiple blade power classes, while short-circuit protection reacts faster than any software-supervised disconnect. The fault flag output reports latch-off events to the BMC, enabling remote fault diagnostics. Toshiba explicitly lists server equipment as a target application. The main trade-off versus a discrete hot-swap MOSFET controller is the internal 53-56 mOhm FET, which limits continuous current to 3.65 A but saves board area and simplifies design.
Recommended
SSD and HDD Storage Rail Protection
Storage devices such as enterprise SSDs and external HDD enclosures run from 5 V or 12 V rails that can be shorted by backplane hot-plug events or cable faults. The TCKE712BNL protects both rail voltages within its 4.4 V to 13.2 V window, and its reverse current blocking prevents a charged output capacitor from back-feeding the supply when input power is removed - a common failure mode in storage cages with many parallel devices. Its 56 mOhm on-resistance keeps voltage drop below roughly 200 mV at 3.65 A, preserving sequencing margin on 5 V rails. Adjustable OVP guards the drive against mis-cabled supplies, and the reusable-fuse behavior avoids field service after a transient fault. Toshiba lists storage equipment as a primary application. Designers should size the slew capacitor to the drive bulk capacitance to keep startup within controller timeout windows.
Recommended
IoT Equipment Power-Path Protection
IoT nodes and gateways are often deployed in uncontrolled electrical environments where supply faults, mis-wiring, and surge events are routine. The TCKE712BNL consolidates overcurrent, short-circuit, overvoltage, undervoltage, and reverse-current protection in one 10-pin WSON10 package, replacing a discrete fuse plus voltage supervisor plus discrete FET solution and saving significant board area on compact IoT PCBs. Its low quiescent overhead suits always-on nodes, and the flag output lets a microcontroller log power events for fleet diagnostics. The adjustable OVP is valuable where field power is provided by wall adapters of uncertain quality on 5 V or 12 V inputs. Toshiba lists IoT equipment among its target applications. Because the ILIM threshold is resistor-programmed, one firmware-uniform PCB can be trimmed per SKU simply by changing a single resistor value during manufacturing.
Recommended
Consumer Equipment DC Input Protection
Consumer products powered by external adapters - set-top boxes, small appliances, audio accessories - face adapter overvoltage, shorted cables, and stalled-motor overcurrent events. The TCKE712BNL addresses all of these within its 4.4 V to 13.2 V range: adjustable OVP clamps the acceptance window to the adapter specification, ILIM-programmed overcurrent limit protects wiring, and thermal shutdown protects against sustained overload without a one-time fuse replacement. This reusable behavior reduces warranty service costs because a transient fault self-clears on power cycle rather than requiring a fuse change. The adjustable slew rate limits audible capacitor charge transients and connector wear. Toshiba lists consumer equipment as a target market. Consumer-grade cost positioning makes it economical to deploy one device per input connector across a product family sharing a common protection circuit.
Recommended
General-Purpose Industrial Power Supplies
Industrial auxiliary 12 V rails distribute power to sensors, relays, and communication modules whose faults must not bring down the whole cabinet. Using a TCKE712BNL on each branch creates electronic branch protection: the 3.65 A continuous rating covers typical branch loads, the ILIM resistor sets coordinated trip levels per branch, and the flag output feeds a PLC or status LED for immediate fault localization - functionality a glass fuse cannot provide. Reverse current blocking prevents motor back-EMF from pumping energy onto the shared bus, and UVLO/OVP thresholds are adjustable to match 12 V industrial tolerance windows. Short-circuit fast-trip protects wiring during technician mis-wiring. Designers should derate thermally inside sealed enclosures, since at 3.65 A the internal FET dissipates roughly 0.75 W estimated at 56 mOhm.
Recommended
USB and Accessory Port Current Limiting
Protected 12 V accessory ports and high-current USB-style power outlets in vehicles, kiosks, and industrial panels benefit from the TCKE712BNL combination of fast short-circuit response and user-adjustable current limit. A shorted cable or damaged accessory is isolated within microseconds by the internal fast-trip path, before connector damage occurs, while the adjustable ILIM resistor permits port-specific limits (for example a lower limit on shared hubs and a higher limit on dedicated ports). The 13.2 V maximum input accommodates automotive 12 V load-dump-adjacent conditions when paired with upstream surge protection, and the flag pin drives a per-port status indicator. Adjustable slew rate suppresses contact bounce artifacts at insertion. Estimated conduction loss stays modest for typical 2-3 A port loads: about 0.22-0.50 W at 56 mOhm, usually manageable with a modest copper pour.
Recommended
Recommended Products Summary
Engineering reference data for TCKE712BNL,RF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TCKE812BNL,RF | TCKE808BNL,RF | TCKE804BNL,RF | TCKE712ANL,RF | TCKE800BNL,RF |
|---|---|---|---|---|---|---|
| Package | WSON10 | WSON10 - same | WSON10 - same | WSON10 - same | WSON10 - same | WSON10 - same |
| Brand | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba |
| Overcurrent Limit | Adjustable, 3.65 A cont / 5 A peak | Adjustable | Adjustable (lower class) | Adjustable (lower class) | Adjustable | Adjustable (lowest class) |
| Protection Features | OCP, SCP, OVP, UVLO, RCB, flag, thermal shutdown | Same feature set | Same feature set | Same feature set | Same feature set | Same feature set |
| Target Market Grade | Consumer / server / IoT / storage | Higher-reliability grade | Standard | Standard | Previous generation | Entry grade |
| Slew Rate Control | Adjustable via external capacitor | Yes (external capacitor) | Yes (external capacitor) | Yes (external capacitor) | Yes (external capacitor) | Yes (external capacitor) |
Key Differentiators
- Higher current class in same WSON10 footprint (vs TCKE808BNL,RF)
- Cost-optimized consumer grade (vs TCKE812BNL,RF)
- Latest B-generation die (vs TCKE712ANL,RF)
Design Notes
The TCKE712BNL dissipates conduction loss in its internal ~56 mOhm FET. Estimated: at the 3.65 A continuous rating, loss is I^2 x R = 13.3 x 0.056 = approximately 0.75 W. The WSON10 relies on PCB copper for heat extraction - provide at least 1 square inch of continuous copper plane connected to the source/ground pins and use thermal vias to inner layers when ambient exceeds 50 C. Verify junction temperature against the datasheet thermal resistance in your actual stackup, as WSON10 theta_JA varies strongly with copper area.
Set the ILIM resistor so the minimum guaranteed current-limit threshold exceeds the worst-case load transient, not just the steady-state current. Capacitive load inrush during hot-plug must be absorbed by the programmed soft-start: choose the slew-rate capacitor so that inrush current (C_load x dV/dt) stays below the ILIM threshold minus load margin. If startup repeatedly trips, increase the slew capacitor before raising ILIM, since raising ILIM weakens short-circuit coordination with upstream protection.
Do not exceed the 13.2 V absolute input condition - automotive or industrial 12 V rails with load-dump transients require upstream TVS clamping. Place the input capacitor within a few millimeters of VIN/GND to minimize parasitic inductance during short-circuit shutdown events. The fault flag polarity must be verified in the datasheet before connecting to a host GPIO, and the flag should not be used as a power-good signal for sequencing without debounce in firmware.
Compliance Information
Compliance data not present in provided web sources; Toshiba consumer eFuse parts are typically RoHS-compliant but this must be confirmed on the official Toshiba product page before use in regulated products.
