MCP4131-104E/SN Microchip Variable Resistor (Small Outline Packages) In Stock
MCP4131-104E/SN is a single-channel 100 kohm digital potentiometer from Microchip in an SOIC-8 package with SPI increment/decrement control interface. It provides 128 wiper positions for precise resistance adjustment under software control. Used in gain adjustment circuits, signal conditioning, LCD contrast control, and audio volume control applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4131-104E/SN Datasheet PDF
- Category
- Variable Resistor
- Price
- From $0.5680(MOQ 25)
- 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 100 kohm digital potentiometer with 128 wiper tap positions
- SPI increment/decrement control interface for simple host microcontroller integration
- SOIC-8 package enables standard SMT assembly with minimal footprint
- 0.1 kHz bandwidth suitable for audio and low-frequency signal adjustment
- RoHS-compliant lead-free construction per JEDEC e3 standard
Applications
MCP4131-104E/SN is commonly used in audio equipment for software-controlled volume and tone adjustment, replacing mechanical potentiometers with digitally programmable equivalents. In analog front-end designs, it trims gain stages and offset voltages in operational amplifier circuits without physical tuning. Industrial calibration systems also use it for precision resistance setting in bridge and sensor conditioning circuits.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5V |
| Supply Current-Max | 1mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 | Mainland China, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does MCP4131-104E/SN provide, and what resistance step size does that correspond to for a 100 kohm pot?
MCP4131-104E/SN provides 128 wiper positions across its 100 kohm end-to-end resistance, resulting in a nominal step size of approximately 781 ohm per increment step. This resolution is sufficient for fine-grained gain trimming and volume control in audio and sensor conditioning circuits.
Which SPI command modes does MCP4131-104E/SN support, and how does that affect firmware complexity?
MCP4131-104E/SN uses an increment/decrement control interface over SPI, requiring only simple UP/DOWN commands rather than full address-register writes. This simplifies firmware to a few GPIO toggle sequences or SPI byte transfers, reducing code complexity compared to full volatile-register digital potentiometers, at the cost of requiring the host to track wiper position in software.
What is the factory lead time for MCP4131-104E/SN, and what risk does that pose for production planning?
MCP4131-104E/SN carries a 7-week factory lead time from Microchip's distribution network. For production runs needing consistent supply, procurement teams should maintain 8 to 12 weeks of safety stock or establish consignment agreements with distributors to avoid line stoppages when demand spikes in the SOIC-8 digital potentiometer market.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.7000 | $17.50 |
| 100+ | $0.6400 | $64.00 |
| 300+ | $0.6350 | $190.50 |
| 500+ | $0.6340 | $317.00 |
| 1000+ | $0.6100 | $610.00 |
| 7500+ | $0.5680 | $4260.00 |
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