STEF12PUR eFuses and hot-swap ICs by STMicroelectronics

Electronic fuse for 12 V line


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.

Where to Buy

Prices starting from US$0.68

Distributor Stock
Logo for RS
RS
from US$0.97
5,990
in stock
Buy Now
Logo for element14
element14
from US$0.89
10,946
in stock
Buy Now
Logo for Farnell
Farnell
from US$0.79
10,946
in stock
Buy Now
Logo for Future Electronics
Future Electronics
from US$0.74
3,000
in stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$0.68
643
in stock
Buy Now
Logo for Avnet Silica
Avnet Silica
-
3,000
in stock
Buy Now
Logo for Avnet America
Avnet America
from US$0.76
-
Buy Now
Logo for EBV Elektronik
EBV Elektronik
-
-
Buy Now

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

Alternative Descriptions

ELECTRONIC FUSE, 12V, 10DFN | element14
STMicroelectronics, STEF12PUR | RS
STEF12 Series 12 V 3.6 A 3 x 3 mm Surface Mount Electronic Fuse - DFN-10 | Future Electronics
Hot-Swap Ctrl, -40 To 125Deg C | Newark Electronics
Circuit Protection Misc Electronic Fuse for 12V Line | Avnet Silica


Frequently Asked Questions

Where can I find additional details, specifications and documents for a STEF12PUR?

Additional datasheets, footprints and schematics for STEF12PUR are listed on our Part Details page. You can also find images and similar parts to STEF12PUR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for STEF12PUR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view STEF12PUR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does STEF12PUR fall under?

The STEF12PUR is listed under Power Management > eFuses and hot-swap ICs > E-fuses.

Can I view similar or alternative parts?

You can view similar parts to STEF12PUR when available in the E-fuses range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the STEF12PUR you can contact the distributor directly for product support, shipping queries etc.

Is the STEF12PUR RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for STEF12PUR have stock available?

Authorised distributors including element14, Farnell, RS, Future Electronics and Newark Electronics have stock available or on a lead time for STEF12PUR.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for STEF12PUR often in real-time on the comparison pages.

What if I can't find stock of STEF12PUR?

You can fill out our help required form which you can use to request a quote for STEF12PUR from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay