MPXV4115VC6U - -115kPa Vacuum Pressure Sensor, 0.2-4.6V | STMicroelectronics
MPN: MPXV4115VC6U ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $15.2 | $15.20 |
| 10 | $13.65 | $136.50 |
| 100 | $12.1 | $1,210.00 |
| 500 | $10.85 | $5,425.00 |
| 1,000 | $9.95 | $9,950.00 |
MPXV4115VC6U Overview
A pressure sensor is a transducer that converts an applied pressure into a proportional electrical signal. The MPXV4115V series belongs to the broader piezoresistive sensor family, in which diffused silicon strain gauges arranged in a Wheatstone bridge change resistance when the diaphragm deflects under pressure. STMicroelectronics integrates bipolar op-amp signal conditioning, thin-film calibration resistors, and temperature compensation on the same silicon die, producing a high-level, microcontroller-ready analog output without external compensation circuitry.
Key specifications include a 5 V nominal supply (4.85 V to 5.35 V operating range), 10 ms response time, ±2.5% maximum pressure error over 0 C to 85 C with calibration, and an on-chip temperature compensation range of -40 C to +125 C. The integrated op-amp chain amplifies the millivolt-level bridge signal to a 0.2 V to 4.6 V ratiometric swing that interfaces directly with an ADC input. The SOP-8 small-outline package with top-side port simplifies PCB layout and allows conformal coating without occluding the inlet.
Typical applications include automotive manifold absolute pressure (MAP) sensing, barometric altimeters, weather stations, vacuum process monitoring, and HVAC system pressure measurement. The vacuum-variant V suffix targets applications that sense sub-atmospheric pressure, such as engine intake manifold vacuum, while the companion MPX4115A series addresses absolute pressure from 15 kPa to 115 kPa for similar signal-chain use cases.
Designers should place a 0.1 uF decoupling capacitor close to the supply pin and use ratiometric ADC sampling tied to the same 5 V reference as the sensor supply to cancel reference drift. The top-port inlet accepts a 3.17 mm (1/8 inch) flexible tube; tubing must be airtight and free of kinks to preserve accuracy. Avoid exposing the port to condensing moisture without a hydrophobic filter.
This page synthesizes distributor pricing, same-package drop-in alternatives, and application-specific design notes not consolidated in the manufacturer datasheet, helping engineers evaluate the MPXV4115VC6U for manifold vacuum, altimeter, and process-vacuum applications.
Drop-in alternatives for MPXV4115VC6U — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MPXV4115VC6U (same form factor and footprint) — differing in Output Type, Operating Temperature, Supply Voltage, Pressure Type, Output Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXV6115VC6U
✅ Drop-In✓ In Stock
$10.4 / Unit
View Datasheet →MPXV4115V6U
✅ Drop-In✓ In Stock
$10.25 / Unit
View Datasheet →MPX4115AP
✅ Drop-In✓ In Stock
$12.03 / Unit
View Datasheet →MPXA6115AC6T1
✅ Drop-In✓ In Stock
$8.65 / Unit
View Datasheet →MPXV5004GC6T1
✅ Drop-In✓ In Stock
$7.25 / Unit
View Datasheet →MPXV4115V6T1
✅ Drop-In📋 Reference alternative (not in catalog)
MPXV4115VC6U Maximum Ratings & Electrical Characteristics
| Pressure Type | Vacuum (negative gauge) |
| Pressure Range | 0 to -115 kPa (-16.68 PSI) |
| Output Type | Analog voltage, ratiometric |
| Output Voltage | 0.2 V to 4.6 V |
| Supply Voltage | 4.85 V to 5.35 V (5 V nominal) |
| Response Time | 10 ms |
| Operating Temperature | -40 C to +125 C |
| Compensated Temperature | 0 C to +85 C |
| Port Style | Top port, 0.13 inch (3.17 mm) tube |
| Port Size | 3.17 mm (1/8 inch) |
| Package | 8-SMD, Gull Wing, Top Port (SOP-8) |
| Mounting Type | Surface Mount |
| Sensor Technology | Piezoresistive (silicon Wheatstone bridge) |
| RoHS Status | Compliant |
MPXV4115VC6U Pin Configuration
| Pin 1 | Vcc — 5 V supply input (4.85 V to 5.35 V) |
| Pin 2 | GND — Analog ground |
| Pin 3 | Vout — Ratiometric analog output (0.2 V to 4.6 V) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
Typical Applications
MPXV4115VC6U is suitable for 6 applications: Automotive Manifold Absolute Pressure (MAP) Sensing, Barometric Altimeter and Weather Station, HVAC Return-Air Depression Sensing, Medical and Laboratory Vacuum Monitoring, Process Vacuum and Industrial Automation, Drone and UAV Altitude Hold.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXV4115VC6U is well matched to MAP sensing in port-fuel-injected and gasoline direct-injection engines because its -115 kPa vacuum range tracks the full sweep from idle (~ -60 kPa) to wide-open throttle (~ -10 kPa), and the 0.2-4.6 V ratiometric output can be sampled directly by the ECU ADC with the 5 V regulator as the reference, cancelling supply drift. The 10 ms response time is fast enough for closed-loop fuel control at typical engine RPM, and the integrated temperature compensation from 0 C to 85 C covers under-hood operating conditions without external lookup tables.
Recommended
Barometric Altimeter and Weather Station
The MPXV4115VC6U's on-chip temperature compensation and high-level analog output make it suitable for low-cost hobby altimeters and weather stations that resolve altitude from atmospheric pressure. Although the V suffix denotes vacuum calibration, the 0 kPa endpoint still tracks atmospheric pressure when the port is vented to ambient, and the ratiometric output allows simple ADC-based pressure-to-altitude conversion via a polynomial lookup. The -40 C to +125 C operating range covers outdoor and high-altitude balloon deployments.
Recommended
HVAC Return-Air Depression Sensing
In residential and commercial HVAC systems the MPXV4115VC6U can measure return-air duct depression to detect filter loading and fan performance. The top port accepts 3.17 mm (1/8 inch) flexible tubing that taps directly into the duct, and the -115 kPa range easily spans the typical 0-1 kPa depression plus any blockage-induced spikes. The integrated op-amp chain means no external instrumentation amplifier is required on the controller PCB, reducing BOM cost and board area.
Recommended
Medical and Laboratory Vacuum Monitoring
For suction equipment, vacuum concentrators, and laboratory aspiration systems, the MPXV4115VC6U provides a calibrated analog readout of sub-atmospheric pressure without requiring external signal conditioning. The ratiometric 0.2-4.6 V swing feeds an MCU ADC directly, and the SOP-8 surface-mount package enables compact, sterilizable enclosure designs. For deeper-vacuum applications beyond -115 kPa, the MPXV6115VC6U (-150 kPa) is the recommended drop-in upgrade.
Recommended
Process Vacuum and Industrial Automation
Pick-and-place vacuum grippers, packaging machinery, and pneumatic systems benefit from the MPXV4115VC6U's integrated calibration and ratiometric output, which simplifies PLC analog-input modules and reduces per-channel calibration cost. The 10 ms response time is adequate for end-effector vacuum verification cycles, and the -40 C to +125 C range tolerates factory-floor temperature swings. The top-port SOP-8 package mounts on standard SMT lines and supports conformal coating.
Recommended
Drone and UAV Altitude Hold
Multirotor drones use barometric pressure as the primary altitude-hold sensor. The MPXV4115VC6U's low power, integrated signal chain, and small SOP-8 footprint are attractive for flight-controller boards where PCB area is constrained. The 0.2-4.6 V output samples into a 3.3 V-tolerant ADC with a simple resistor network, and the calibrated temperature curve reduces barometric altitude drift across takeoff-to-cruise thermal transients.
Recommended
Recommended Products Summary
Engineering reference data for MPXV4115VC6U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXV6115VC6U | MPXV4115V6U | MPX4115AP | MPXA6115AC6T1 |
|---|---|---|---|---|---|
| Package | 8-SMD, Gull Wing, Top Port (SOP-8) | 8-SMD, Gull Wing, Top Port (SOP-8) - same | 8-SMD, Gull Wing, Top Port (SOP-8) - same | 8-SMD SOP-8 - same family | 8-SMD, Gull Wing, Top Port (SOP-8) - same |
| Brand | STMicroelectronics | STMicroelectronics | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pressure Type | Vacuum (0 to -115 kPa) | Vacuum (0 to -150 kPa) | Vacuum (0 to -115 kPa) - identical | Absolute (15 to 115 kPa) | Absolute (15 to 115 kPa) |
| Output Voltage | 0.2 V to 4.6 V | 0.2 V to 4.6 V - same | 0.2 V to 4.6 V - identical | 0.2 V to 4.6 V - same swing | 0.2 V to 4.6 V - same swing |
| Supply Voltage | 5 V (4.85 V to 5.35 V) | 5 V - same | 5 V - same | 5 V - same | 5 V - same |
| Port Style | Top port, 3.17 mm tube | Top port - same | Top port - same | Top port - same | Top port - same |
| Response Time | 10 ms | 10 ms - same | 10 ms - same | 10 ms - same | 10 ms - same |
| Compensated Temperature | 0 C to +85 C | 0 C to +85 C - same | 0 C to +85 C - same | 0 C to +85 C - same | 0 C to +85 C - same |
Key Differentiators
- Integrated signal conditioning and temperature compensation on a single die (vs MPXV5004GC6T1)
- Vacuum-specific calibration at -115 kPa full-scale (vs MPX4115AP)
- Top-port SOP-8 package with integrated 3.17 mm tube fitting (vs MPXV6115VC6U)
Design Notes
Power the MPXV4115VC6U from a clean 5 V rail; place a 0.1 uF ceramic decoupling capacitor as close as possible to the Vcc pin (pin 1). Use a separate analog ground return for the sensor and tie it to the system analog ground plane at a single point to avoid digital switching noise coupling into the bridge. The output is ratiometric to Vcc, so use Vcc as the ADC reference voltage to cancel supply drift automatically.
Route the analog output trace away from switching converters, digital clock lines, and high-current return paths. Keep the trace short to minimize capacitive loading on the op-amp output stage. The top port on the package lid must remain unobstructed; do not place components, vias, or silkscreen inside the keep-out region defined in the package drawing. Provide clearance for the 3.17 mm tubing and any clamp or fitting.
Do not connect the top port to a pressurized source exceeding -115 kPa without confirming the datasheet maximum pressure rating; over-pressure can rupture the diaphragm. Avoid exposing the port to condensing moisture - install a hydrophobic filter if the operating environment is humid. Do not apply conformal coating over the top port inlet; mask the port before coating to preserve pneumatic access.
For ADC sampling, oversample and average multiple conversions to reduce noise on the analog output. The sensor bandwidth is limited by the 10 ms response time, so a sampling rate above ~50 Hz provides no additional information. Apply a simple moving-average filter in firmware to further smooth the readout for display purposes. Calibrate end-of-line against a known reference to remove PCB-level systematic offset.
Compliance Information
RoHS and lead-free confirmed per ST product page; SOP-8 package is JEDEC-compliant and supports 260 C peak lead-free reflow per J-STD-020. AEC-Q100 qualification status not stated in provided web data.
