MCP131T-450E/TT Microchip Integrated Circuit (Other) In Stock
The MCP131T-450E/TT is a single-channel voltage supervisor and microcontroller reset IC from Microchip, monitoring a fixed threshold window of 4.271 V to 4.49 V to assert a reset signal during undervoltage conditions. Packaged in a 3-pin SOT-23B, it is RoHS-compliant and suited for power supply monitoring in 5 V embedded systems.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP131T-450E/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0716(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed threshold voltage supervisor: 4.271 V to 4.49 V
- Single-channel reset IC for 5 V system monitoring
- 3-pin SOT-23B package for minimal board space
- No manual reset, no watchdog: simple glue-free reset generation
- RoHS-compliant, Pb-free (JESD-609 e3)
- Reliable undervoltage detection without external components
Applications
The MCP131T-450E/TT is used as a power supply monitor and microcontroller reset generator in 5 V embedded systems, industrial controllers, and consumer electronics where a hard reset must be asserted whenever the supply drops below approximately 4.27 V. Its simple 3-pin package and fixed threshold eliminate the need for resistor dividers or external comparators, reducing BOM complexity in space-constrained reset circuits.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 19Weeks |
| YTEOL | 9 |
| Additional Feature | BAT BUP SW:N;MNL RST:N;OV DET:N;PW FL IP:N;PW FL IO:N;PW FL OP:N;PRG RST DLY:N;UV DET:N;WD:N;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| 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 |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.09mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.38V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what voltage does the MCP131T-450E/TT assert a reset, and is that threshold adjustable?
The MCP131T-450E/TT has a fixed trip threshold between 4.271 V and 4.49 V and is not adjustable. It asserts a reset output whenever the monitored supply drops below this range, making it suitable for protecting 5 V microcontrollers from brown-out conditions without any external resistors or configuration.
How does using a dedicated voltage supervisor like MCP131T-450E/TT compare to relying on an MCU's internal BOR for reset generation?
A dedicated supervisor such as MCP131T-450E/TT monitors the supply rail independently, asserting reset before the MCU's own power fails. This is more reliable than an internal brown-out reset (BOR), which may not trigger until the supply has already dropped below 3 V, potentially causing firmware corruption in 5 V systems with supply rails that droop slowly.
What is the lead time risk for MCP131T-450E/TT, and how should procurement manage a 19-week supply gap?
The MCP131T-450E/TT has a 19-week factory lead time, roughly 5 months. Procurement teams should place orders well in advance of production ramp and evaluate alternative single-channel voltage supervisors in SOT-23-3 with similar 4.4 V trip thresholds as qualified second sources to avoid production stoppages during supply constraints.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0716 | $0.07 |
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