MCP45HV51-502E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The Microchip MCP45HV51-502E/ST is a high-voltage single-channel digital potentiometer with 5 kΩ end-to-end resistance and 256 wiper positions, controlled via I2C 2-wire serial interface in a 14-pin TSSOP package. It supports resistor array values of 5 kΩ, 10 kΩ, and 50 kΩ variants for flexible circuit tuning. Designed for programmable gain, bias adjustment, and calibration applications in industrial and high-voltage analog designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP45HV51-502E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4300(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 MCP45HV51-502E/ST?
- 5 kΩ end-to-end resistance with 256-position linear wiper for precise digital control
- I2C 2-wire serial control interface for easy MCU integration without dedicated SPI bus
- High-voltage tolerant design supporting resistor array options of 5 kΩ, 10 kΩ, and 50 kΩ
- 14-pin TSSOP package with compact SMT footprint
- Single-channel potentiometer function in space-efficient package
- Pb-free, JESD-609 e3 RoHS-compliant construction for global market eligibility
What is MCP45HV51-502E/ST used for?
The MCP45HV51-502E/ST is used in programmable gain amplifier circuits, automatic gain control loops, and calibration trim networks where a digitally adjustable 5 kΩ to 50 kΩ resistance is needed under I2C microcontroller command. Its high-voltage tolerance makes it suitable for industrial process control, motor drive bias networks, and analog front-end circuits that operate at voltage levels exceeding standard 5 V logic supply ranges.
What are the specifications of MCP45HV51-502E/ST?
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 13 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 0.024kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 256 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 18V |
| Resistor Terminal Voltage-Min | -18 V |
| Screening Level | AEC-Q100; TS 16949 |
| Supply Current-Max | 0.65mA |
| Supply Voltage-Nom | 3.5V |
| Surface Mount | YES |
| Temperature Coefficient-Nom | 100ppm/°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 | 100000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Where can I find the MCP45HV51-502E/ST datasheet?
MCP45HV51-502E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP45HV51-502E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many discrete resistance steps does the MCP45HV51-502E/ST offer, and what step size does each wiper position represent for a 5 kΩ variant?
The MCP45HV51-502E/ST provides 256 linear wiper positions across its 5 kΩ end-to-end resistance, yielding a step size of approximately 19.5 Ω per position. This resolution is adequate for programmable gain setting, bias trimming, and calibration adjustments in analog circuits where coarse-to-medium resistance granularity is sufficient.
What communication interface does MCP45HV51-502E/ST use, and how does I2C simplify multi-device integration on a shared bus?
The MCP45HV51-502E/ST uses a 2-wire I2C serial control interface, allowing multiple digital potentiometers to share the same SDA and SCL lines with unique device addresses. This reduces pin count on the host microcontroller compared to SPI implementations requiring individual chip-select lines for each potentiometer in multi-channel designs, simplifying PCB routing in calibration and gain-control systems.
When is the 50 kΩ resistor array variant of the MCP45HV51 family preferred over the 5 kΩ variant for a high-impedance amplifier gain network?
The 50 kΩ variant is preferred when the digital potentiometer is used in a feedback or gain-setting network for a high-impedance instrumentation amplifier, where a 5 kΩ series resistance would excessively load the amplifier input or exceed the amplifier's specified external resistance range. Using a 50 kΩ element keeps loading errors small and maintains amplifier accuracy across the 256 gain steps achievable with the same I2C command set.
What lifecycle expectancy and sourcing lead time apply to MCP45HV51-502E/ST for production designs requiring multi-year supply continuity?
The MCP45HV51-502E/ST has a YTEOL indicator of 13 years and a factory lead time of approximately 7 weeks, making it suitable for production design-ins that require stable supply over a decade-long product lifecycle. The JESD-609 e3 lead-free classification and RoHS compliance further support its use in global markets requiring environmental documentation for industrial and automotive-adjacent applications.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.0000 | $2.00 |
| 25+ | $1.6600 | $41.50 |
| 100+ | $1.5100 | $151.00 |
| 1000+ | $1.4600 | $1460.00 |
| 2592+ | $1.4500 | $3758.40 |
| 5000+ | $1.4300 | $7150.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit