MCP40D19T-502E/LT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP40D19T-502E/LT is a single-channel 5 kΩ, 7-bit digital potentiometer from Microchip Technology, controlled via I2C 2-wire serial interface. It offers 128 wiper positions and operates from a single supply rail, packaged in a compact SOT-23-5 footprint. From $0.80, in stock, worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP40D19T-502E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3582(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-502E/LT?
- 7-bit resolution with 128 wiper positions provides fine-grained 5 kΩ resistance adjustment over I2C without mechanical trimmer components
- I2C 2-wire serial interface enables single-bus multi-device control, reducing GPIO pin count in microcontroller-based calibration circuits
- SC70-5 / SOT-23-5 package occupies under 2 mm² of PCB area, ideal for space-constrained portable sensor and audio trim applications
What is MCP40D19T-502E/LT used for?
MCP40D19T-502E/LT is used in microcontroller-driven systems for software-controlled gain adjustment, offset calibration, and LCD contrast control where a compact I2C digital potentiometer replaces a mechanical trimmer. Its 5 kΩ end-to-end resistance and 128-step resolution suit precision analog front-end biasing in sensor modules and signal conditioning circuits. The tiny SOT-23-5 package allows integration directly adjacent to op-amp and ADC circuitry on dense mixed-signal boards.
What are the specifications of MCP40D19T-502E/LT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SC70-5 |
| Factory Lead Time | 10Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 2kHz |
| 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 | 5000Ω |
| 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-502E/LT datasheet?
MCP40D19T-502E/LT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP40D19T-502E/LT?
Compatible alternatives and drop-in replacements for MCP40D19T-502E/LT:
Digital Potentiometer, 1 Func, 5000ohm, 2-wire Serial Control Interface, 128 Positions, CMOS, PDSO6
Digital Potentiometer, 1 Func, 5000ohm, 2-wire Serial Control Interface, 128 Positions, CMOS, PDSO6
Frequently Asked Questions
How many resistance steps does MCP40D19T-502E/LT offer, and what is its end-to-end resistance?
MCP40D19T-502E/LT provides 128 wiper positions across a 5 kΩ end-to-end resistance, giving a step size of approximately 39 Ω per increment. This 7-bit resolution is sufficient for fine gain and offset trimming in analog front-end circuits, where replacing a mechanical 5 kΩ trimmer with a digitally controllable part eliminates manual calibration on production lines.
Which interface does MCP40D19T-502E/LT use, and how does it simplify multi-device PCB designs?
MCP40D19T-502E/LT uses a 2-wire I2C interface operating up to 400 kHz, allowing multiple digital potentiometers to share the same SDA and SCL bus lines. This reduces the number of microcontroller GPIO pins needed to 2 wires regardless of how many MCP40D19 devices are daisy-chained, compared to SPI designs requiring separate chip-select lines per device.
For a portable medical sensor design, why is MCP40D19T-502E/LT a suitable bias adjustment component?
MCP40D19T-502E/LT draws very low quiescent current and occupies a compact SOT-23-5 footprint under 2 mm², fitting within tight sensor module layouts. Its single-supply operation and I2C control allow a host microcontroller to digitally set the 5 kΩ wiper position for offset biasing or gain trimming without manual adjustment, which is critical for consistent calibration across batches of portable medical devices.
What is the bandwidth limitation of MCP40D19T-502E/LT, and does it affect audio or high-frequency signal paths?
MCP40D19T-502E/LT has a nominal bandwidth of 2 kHz, which limits its use in audio signal paths above that frequency. For DC biasing, low-frequency gain control, and calibration applications below 2 kHz, the part performs well. Higher-frequency AC signal routing above 2 kHz should use a dedicated wideband potentiometer, while this device suits DC trim and slow control loops.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5790 | $0.58 |
| 100+ | $0.5300 | $53.00 |
| 250+ | $0.4409 | $110.23 |
| 500+ | $0.3858 | $192.90 |
| 1000+ | $0.3582 | $358.20 |
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