MCP40D19T-503E/LT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP40D19T-503E/LT is a single-channel 7-bit digital potentiometer from Microchip with 50 kΩ end-to-end resistance and I2C (2-wire serial) interface in a tiny 5-pin SC70 package. It targets programmable gain, voltage adjustment, and calibration circuits in compact battery-powered and portable electronic designs.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP40D19T-503E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4593(MOQ 1)
- 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 MCP40D19T-503E/LT?
- 50 kΩ end-to-end resistance with 7-bit (128-step) resolution for fine adjustment
- I2C 2-wire serial interface for easy microcontroller integration with minimal pin usage
- Single-channel design in a 5-pin SC70 package for ultra-compact board layouts
- Non-volatile wiper position storage retaining settings across power cycles
- RoHS-compliant, Pb-free SC70-5 package compatible with automated SMT assembly
- 0.26 kHz bandwidth suitable for low-frequency bias and calibration applications
What is MCP40D19T-503E/LT used for?
The MCP40D19T-503E/LT is used in programmable bias and gain adjustment circuits within sensor modules, LCD contrast control, and audio volume control systems where a microcontroller sets the resistance digitally over I2C. Its tiny SC70-5 footprint and low power consumption make it ideal for space-constrained portable equipment such as handheld instruments and wearable devices. The device also serves calibration and trimming applications in industrial and medical equipment requiring repeatable, software-controlled resistance settings.
What are the specifications of MCP40D19T-503E/LT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SC70-5 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.26kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 128 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.08mA |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 50000Ω |
| Package | SOT23 (5-Pin) |
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 |
Where can I find the MCP40D19T-503E/LT datasheet?
MCP40D19T-503E/LT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP40D19T-503E/LT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps does the MCP40D19T-503E/LT provide, and what step size does that yield across the 50 kΩ range?
The MCP40D19T-503E/LT is a 7-bit digital potentiometer offering 128 discrete wiper positions across its 50 kΩ end-to-end resistance. Each step represents approximately 390 Ω of resistance change, which is sufficient for programmable gain amplifier tuning, voltage divider adjustment, and bias calibration in sensor front-end circuits.
Which control interface does the MCP40D19T-503E/LT use, and how does that simplify microcontroller integration?
The MCP40D19T-503E/LT uses a 2-wire I2C serial interface, requiring only two signal lines (SDA and SCL) shared with other I2C peripherals on the same bus. This eliminates the need for a dedicated SPI port and reduces GPIO consumption on the host microcontroller. Multiple devices can share the same I2C bus at different addresses, further simplifying multi-potentiometer designs.
For a compact portable calibration module, what physical footprint does the MCP40D19T-503E/LT occupy on the PCB?
The MCP40D19T-503E/LT is housed in a 5-pin SC70 package, one of the smallest SMT package outlines available, with a body measuring approximately 2 mm × 2.1 mm. This ultra-compact footprint allows placement on densely packed boards in handheld instruments, wearable sensors, and IoT nodes where PCB real estate is tightly constrained.
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About Microchip
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5790 | $0.58 |
| 100+ | $0.5300 | $53.00 |
| 1000+ | $0.5000 | $500.00 |
| 2250+ | $0.4687 | $1054.58 |
| 3000+ | $0.4593 | $1377.90 |
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