STEF12

Active
Design Win

Electronic fuse for 12 V line

Download datasheet
Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

The STEF12 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 12 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time. When an overload condition occurs, the STEF12 limits the output current to a predefined safe value. If the anomalous overload condition persists it goes into an open state, disconnecting the load from the power supply. If a continuous short-circuit is present on the board, when power is re-applied the E-fuse initially limits the output current to a safe value and then again goes into an open state.
The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signal led to the board monitoring circuits through a signal on the Fault pin.
Unlike the mechanical fuses, which must be physically replaced after a single event, the Efuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin.
The companion chip for the 5 V power rails is also available with part number STEF05.
  • All features

    • Continuous current (typ): 3.6 A
    • N-channel on-resistance (typ): 53 mΩ
    • Enable/Fault functions
    • Output clamp voltage (typ): 15 V
    • Undervoltage lockout
    • Short-circuit limit
    • Overload current limit
    • Controlled output voltage ramp
    • Thermal latch (typ): 165 °C
    • Operating junction temp. - 40 °C to 125 °C
    • Available in DFN10 (3x3 mm) package
    • UL2367 Recognized - File N. E468771

You might also like...

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-IFP021V1

      Active

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

      Process Control and Automation Solution Eval Boards --
      STEVAL-IFP021V1

      Description:

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STEF12

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEF12PUR
Active
DFN10 3X3 Industrial Ecopack2

STEF12PUR

Package:

DFN10 3X3

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN10 3X3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Swipe or click the button to explore more details Don't show this again
Part Number
Order from distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STEF12PUR Available at 3 distributors

Distributor availability ofSTEF12PUR

Distributor Name
Region Stock Min. Order Third party link
YOSUN ASIA/PACIFIC 200 1 Buy from Distributor
Newark Element14 AMERICA 271 0 Buy from Distributor
Farnell Element14 EUROPE 669 1 Buy from Distributor

Distributor reported inventory date: 2022-08-10

Distributor Name

YOSUN

Stock

200

Min.Order

1

Region

ASIA/PACIFIC Buy from Distributor

Newark Element14

Stock

271

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

669

Min.Order

1

Distributor reported inventory date: 2022-08-10

Active
EAR99 NEC Tape and Reel DFN10 3X3 -40 125 CHINA

STEF12PUR Active

Package:
DFN10 3X3
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

STEF12PUR

ECCN (EU):

NEC

Packing Type:

Tape and Reel

Operating Temperature (°C)

Min:

-40

Max:

125

Country of Origin:

CHINA

Distributor availability ofSTEF12PUR

Distributor Name
Region Stock Min. Order Third party link
YOSUN ASIA/PACIFIC 200 1 Buy from Distributor
Newark Element14 AMERICA 271 0 Buy from Distributor
Farnell Element14 EUROPE 669 1 Buy from Distributor

Distributor reported inventory date: 2022-08-10

Distributor Name

YOSUN

Stock

200

Min.Order

1

Region

ASIA/PACIFIC Buy from Distributor

Newark Element14

Stock

271

Min.Order

0

Region

AMERICA Buy from Distributor

Farnell Element14

Stock

669

Min.Order

1

Distributor reported inventory date: 2022-08-10

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors