STM1815SWX7F STMicroelectronics Integrated Circuit (SOT23 (3-Pin)) In Stock
STM1815SWX7F is a single-channel voltage supervisor and reset IC by STMicroelectronics with a fixed threshold and active-low reset output. Key specs: fixed reset threshold, single-channel monitoring, and ultra-compact 3-pin SOT-23 package. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STM1815SWX7F Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2459(MOQ 100)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STM1815SWX7F?
- Fixed-threshold single-channel voltage supervisor with active-low reset output for deterministic microcontroller startup sequencing
- Ultra-compact 3-pin SOT-23 package occupying minimal PCB area, ideal for space-constrained portable and IoT designs
- RoHS-compliant plastic/epoxy construction with JEDEC TO-236 equivalent footprint for broad board-level compatibility
What is STM1815SWX7F used for?
The STM1815SWX7F is used to monitor the primary supply rail of microcontrollers and FPGAs, asserting a reset signal during power-up, power-down, and brownout conditions to prevent undefined processor states. Its fixed threshold simplifies BOM and design effort in consumer electronics, industrial sensor nodes, and battery-operated handheld devices where supply monitoring is mandatory. The tiny SOT-23 footprint makes it a standard reset supervisor choice in space-constrained wearable and IoT modules.
What are the specifications of STM1815SWX7F?
| Factory Lead Time | 24Weeks |
| YTEOL | 7 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.016mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.2V |
| Supply Voltage-Nom (Vsup) | 3.6V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.96mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.88V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the STM1815SWX7F datasheet?
STM1815SWX7F Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STM1815SWX7F?
Compatible alternatives and drop-in replacements for STM1815SWX7F:
Frequently Asked Questions
What does the STM1815SWX7F monitor and how does it assert its reset output?
The STM1815SWX7F monitors a single supply rail and compares it against a fixed internal threshold voltage. When the supply drops below this threshold—typically during power-up ramp or a brownout event—the device asserts an active-low reset output to hold the connected microcontroller or logic circuit in reset. The reset remains asserted until the supply recovers above the threshold plus a built-in hysteresis window, preventing chattering during slow ramp edges.
How does the 3-pin SOT-23 package of the STM1815SWX7F simplify PCB design for portable products?
The SOT-23 package measures approximately 3 mm × 1.75 mm with 0.95 mm pin pitch, consuming very little board area. With only 3 pins—VCC, GND, and RESET—no external timing capacitor or resistor is needed for the STM1815SWX7F, further reducing component count to a single IC per monitored rail. This makes it straightforward to add supply supervision to battery-powered IoT sensors, wearables, and handheld instruments.
Is the STM1815SWX7F suitable as a direct replacement for the popular STM1815 supervisor family members?
Yes, the STM1815SWX7F is part of the STM1815 voltage supervisor family from STMicroelectronics, sharing the same 3-pin SOT-23 footprint and functional architecture. The suffix letters indicate threshold voltage and output configuration variants. Designers can substitute between STM1815 variants by selecting the suffix that matches the required reset threshold—for example, 1.8 V, 2.5 V, 3.0 V, or 3.3 V monitored rail—without PCB layout changes.
Does the STM1815SWX7F require any external components to function correctly?
No external timing or threshold-setting components are required. The STM1815SWX7F integrates all comparator circuitry, reference voltage, and hysteresis internally. Only a 100 nF bypass capacitor placed close to the VCC pin is recommended to filter supply noise and ensure accurate threshold detection. This minimal external component requirement lowers BOM cost and reduces board space by eliminating the resistor divider and timing capacitor needed by adjustable supervisors.
In which industrial or automotive applications can the STM1815SWX7F be deployed?
The STM1815SWX7F is applicable in industrial control units, programmable logic controllers, and sensor interfaces where reliable microcontroller reset on supply dip is required. Its RoHS-compliant packaging meets environmental compliance requirements for industrial equipment sold in European and Asian markets. For automotive applications, designers should verify temperature grade and AEC-Q100 qualification status, as the STM1815 family also includes automotive-screened variants rated to 125 °C or 150 °C junction temperature.
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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+ | $0.4890 | $48.90 |
| 250+ | $0.2623 | $65.57 |
| 500+ | $0.2591 | $129.55 |
| 1000+ | $0.2548 | $254.80 |
| 12000+ | $0.2472 | $2965.92 |
| 24000+ | $0.2459 | $5901.12 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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