MCP4018T-503E/LT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The MCP4018T-503E/LT is a single-channel 50 kΩ digital potentiometer from Microchip Technology with 128 wiper positions and a 2-wire I2C-compatible serial interface. It operates over a wide supply voltage range, is packaged in a 6-pin SOT-23 for minimal board space, and is RoHS-compliant.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- MCP4018T-503E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2400(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
- Single-channel digital potentiometer with 128 wiper positions for fine resistance control
- 50 kΩ end-to-end resistance (503 code) with 0.26 kHz bandwidth
- 2-wire serial (I2C-compatible) interface for easy microcontroller integration
- Ultra-compact 6-pin SOT-23 package for space-constrained designs
- Non-volatile or volatile wiper position options depending on variant
- RoHS-compliant (e3) lead-free construction with 14-week standard lead time
Applications
The MCP4018T-503E/LT is commonly used in applications requiring software-controlled resistance adjustment, such as LCD display contrast control, audio volume adjustment, and programmable gain or offset trimming in analog signal chains. It is also used in power supply output voltage tuning and sensor calibration circuits where fine 128-step adjustments over a 50 kΩ range are needed. Its 6-pin SOT-23 package and I2C interface make it straightforward to integrate into compact embedded system boards.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 14Weeks |
| YTEOL | 0 |
| Bandwidth-Nom | 0.26kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 128 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP6,.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 |
| Supply Current-Max | 0.6mA |
| Surface Mount | YES |
| 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 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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
How does the 128-position resolution of MCP4018T-503E/LT translate to resistance step size in a gain-control circuit?
With a 50 kΩ end-to-end resistance divided into 128 positions, each wiper step represents approximately 390 Ω of resistance change. This resolution is sufficient for fine gain or offset adjustments in op-amp circuits, LCD bias tuning, or programmable filter corner frequency control, all via a 2-wire I2C-compatible serial interface.
What bandwidth limitations should be considered when using MCP4018T-503E/LT in an audio or AC signal path?
The MCP4018T-503E/LT has a nominal bandwidth of 0.26 kHz, which limits its use in high-frequency AC signal paths. It is best suited for DC or very low-frequency signal conditioning tasks such as bias trimming, offset adjustment, or volume control in audio preamplifier stages where signal frequencies remain well below 1 kHz.
Given the 14-week factory lead time, what procurement strategy is recommended for MCP4018T-503E/LT in production builds?
With a 14-week factory lead time, designers should plan buffer stock or place blanket orders at least 3–4 months ahead of production. Microchip's MCP4017 and MCP4019 are functionally similar single-channel digital potentiometers in the same SOT-23 6-pin footprint, offering procurement flexibility. Keeping a minimum of 3 months of safety stock mitigates supply risk for high-volume 50 kΩ potentiometer designs.
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