MCP4551-503E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4551-503E/MS is a single-channel I2C digital potentiometer with 256-step resolution and 50 kOhm end-to-end resistance operating up to 2 kHz bandwidth. It uses a 2-wire serial interface and includes non-volatile wiper storage in a compact 8-pin MSOP package. Available in stock from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4551-503E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1925(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 256-step digital potentiometer with 50 kOhm end-to-end resistance for fine-resolution analog trimming
- I2C (2-wire serial) interface enabling direct connection to microcontrollers without dedicated SPI bus pins
- Non-volatile EEPROM wiper position storage ensuring settings are retained for over 40 years across power cycles
- Available in 5 kOhm, 10 kOhm, and 50 kOhm resistance variants (MCP4551/MCP4551-102/MCP4551-503) in the same MSOP-8 footprint
Applications
The MCP4551-503E/MS is used for programmable reference voltage adjustment, op-amp gain trimming, and LCD contrast control in consumer and industrial electronics where I2C bus availability makes SPI undesirable. Its 50 kOhm resistance value suits high-impedance input stage biasing and low-current voltage divider applications requiring minimal power dissipation. The non-volatile wiper memory makes it well suited for factory-set calibration in measurement instruments and IoT sensor nodes.
Specifications
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 25Weeks |
| YTEOL | 9 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 2kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| 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 | 0.6mA |
| Supply Voltage-Nom | 3V |
| 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 |
| Total Resistance-Nom | 100000Ω |
| Package | Small Outline Packages |
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
Compatible alternatives and drop-in replacements for MCP4551-503E/MS:
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Frequently Asked Questions
How does the MCP4551-503E/MS's I2C interface differ from SPI-based digital potentiometers in embedded designs?
The MCP4551-503E/MS uses a 2-wire I2C interface requiring only SDA and SCL lines, compared to the 3 or 4 wires needed for SPI. This allows the device to share an existing I2C bus with sensors, EEPROMs, or display controllers without consuming additional GPIO lines on the MCU. The I2C address is hardware-configurable via the A0 pin, allowing up to 2 MCP4551 devices on one bus.
What step resolution and resistance range does the MCP4551-503E/MS provide for precision analog circuits?
The MCP4551-503E/MS offers 256 wiper positions across a 50 kOhm end-to-end resistance, giving a step size of approximately 196 Ohm per step. The typical wiper contact resistance is 75 Ohm. For applications needing smaller steps or lower resistance, the MCP4551-502 (10 kOhm) and MCP4551 (5 kOhm) variants are pin- and footprint-compatible alternatives on the same MSOP-8 PCB layout.
Does the MCP4551-503E/MS retain its wiper setting after power loss, and for how long?
Yes, the MCP4551-503E/MS writes the wiper position to on-chip EEPROM non-volatile memory, retaining the value for more than 40 years without power. The EEPROM supports at least 100,000 write cycles before wear-out. This feature is essential for factory-calibrated instruments where the calibration constant must survive field power interruptions without re-calibration procedures.
What lead time should procurement teams plan for when ordering MCP4551-503E/MS in volume?
The MCP4551-503E/MS has a factory lead time of approximately 25 weeks from Microchip's production schedule, which is significantly longer than many standard digital ICs. Procurement teams designing systems with this device should place orders early in the production planning cycle or carry buffer stock. The MSOP-8 package format is shared across the MCP4551 resistance family, so safety stock can be sourced in the 5 kOhm or 10 kOhm variants as design-compatible substitutes if the 50 kOhm version is delayed.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0200 | $1.02 |
| 25+ | $0.8500 | $21.25 |
| 100+ | $0.1925 | $19.25 |
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