STEF12SAPUR STMicroelectronics Integrated Circuit (Small Outline No-lead) In Stock
STMicroelectronics STEF12SAPUR is a 12 V electronic fuse IC with 5.5 A current limit and 165°C thermal shutdown protection. Housed in a compact 10-pin USON package, it features adjustable overcurrent threshold and auto-restart. Available in tape-and-reel packaging for automated SMT assembly with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline No-lead
- Pin Count
- 11
- Lifecycle
- ACTIVE
- Datasheet
- STEF12SAPUR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5970(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STEF12SAPUR?
- 12 V line protection with adjustable current limit up to 5.5 A and precise overcurrent response for robust circuit protection
- Automatic thermal shutdown at 165°C with auto-restart capability preventing permanent damage from overtemperature events
- Compact 10-pin USON (2 mm x 2 mm) package enabling space-efficient eFuse integration in dense PCB designs
- Adjustable overcurrent threshold via external resistor allows fine-tuning protection for diverse load requirements from 0.5 A to 5.5 A
What is STEF12SAPUR used for?
The STEF12SAPUR is designed for electronic fuse protection in 12 V power distribution systems found in industrial equipment, server power supplies, and embedded computing platforms. It is widely deployed in smart home devices, IoT gateways, and telecom line cards where traditional fuses need to be replaced by resettable electronic protection with precise current limiting. The adjustable threshold and compact USON footprint make it ideal for multi-rail power architectures in space-constrained applications requiring per-channel short-circuit protection.
What are the specifications of STEF12SAPUR?
| Factory Lead Time | 20Weeks |
| Date Of Intro | 2020-05-29 |
| YTEOL | 7 |
| Additional Feature | CURRENT LIMIT:5.5A; THERMAL SHUTDOWN:165C |
| Adjustable Threshold | YES |
| Analog IC - Other Type | eFUSE |
| JESD-30 Code | S-PDSO-N10 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.12,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | IEC 62368-1 |
| Supply Voltage-Max (Vsup) | 13.8V |
| Supply Voltage-Min (Vsup) | 10V |
| Supply Voltage-Nom (Vsup) | 12V |
| Surface Mount | YES |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China |
Where can I find the STEF12SAPUR datasheet?
STEF12SAPUR Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STEF12SAPUR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum current limit and thermal shutdown temperature of the STEF12SAPUR?
The STEF12SAPUR supports a maximum current limit of 5.5 A and features automatic thermal shutdown at 165°C. When the junction temperature exceeds 165°C, the device disconnects the load and restarts automatically after cooling, providing robust protection without requiring manual intervention or fuse replacement in 12 V power distribution systems.
How is the overcurrent threshold adjusted in the STEF12SAPUR design?
The overcurrent threshold in the STEF12SAPUR is set using an external resistor connected to the ILIM pin, allowing designers to program current limits anywhere from approximately 0.5 A to 5.5 A. This adjustability enables the same eFuse IC to protect loads with different current requirements, reducing the number of unique components across product families.
Which package does the STEF12SAPUR use and how does it benefit compact PCB designs?
The STEF12SAPUR uses a 10-pin USON (Ultrathin Small Outline No-lead) package measuring approximately 2 mm x 2 mm with a 0.5 mm pitch. This tiny footprint consumes 75% less PCB area compared to SOT-23 alternatives, enabling eFuse integration directly adjacent to connectors or power rails on dense multi-layer boards in IoT devices and industrial controllers.
How does the STEF12SAPUR compare to a traditional resettable polyfuse for 12 V line protection?
Unlike a polyfuse that trips in hundreds of milliseconds and requires minutes to reset after cooling, the STEF12SAPUR responds to overcurrent within microseconds and resets automatically within milliseconds once thermal conditions allow. The 5.5 A programmable limit and 165°C shutdown threshold provide accurate, repeatable protection that does not degrade over thousands of fault cycles, unlike polyfuses whose trip current drifts with age and temperature cycles.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.9700 | $97.00 |
| 250+ | $0.8500 | $212.50 |
| 500+ | $0.8000 | $400.00 |
| 3000+ | $0.6334 | $1900.20 |
| 12000+ | $0.6000 | $7200.60 |
| 24000+ | $0.5970 | $14327.76 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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