MPXH6250AC6T1 - 20-250kPa Absolute Pressure Sensor | STMicroelectronics
MPN: MPXH6250AC6T1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.4 | $740.00 |
| 500 | $6.65 | $3,325.00 |
| 1,000 | $5.95 | $5,950.00 |
MPXH6250AC6T1 Overview
An absolute pressure sensor is a MEMS device whose internal reference cavity is sealed against a fixed vacuum, so the output represents pressure relative to that vacuum rather than to ambient air. Within the broader sensor taxonomy it sits under piezoresistive silicon pressure sensors -> pressure sensors -> transducers -> MEMS -> sensors. Absolute variants are differentiated from gauge (relative-to-atmosphere) and differential sensors and are used where the system must operate regardless of barometric drift - intake manifold, barometric altimetry, sealed enclosures and vacuum process control.
Key electrical characteristics include a 5.0 V typical supply (operating within the broader 4.75 V to 5.25 V range commonly used with 5 V ratiometric ADCs), a 1 ms typical response time suitable for closed-loop control loops, an operating temperature range of -40C to +125C matching harsh under-hood and industrial environments, and a top-port pressure inlet that simplifies hose integration. The transfer function is approximately Vout = 5.0 V * (0.0038 * P_kPa + 0.058) for accurate MCU-side conversion. The integrated 8-bit-trimmed calibration yields typical accuracy around 1.5% to 2.5% over the compensated range.
Technically, the device combines a MEMS piezoresistive Wheatstone bridge with a CMOS signal-conditioning ASIC on the same silicon carrier. Temperature compensation is performed by on-chip thin-film resistors laser-trimmed at wafer level, which keeps calibration drift low and removes the cost of per-unit trimming. The 0.3 V to 4.9 V swing maps cleanly onto a 5 V ADC full scale, maximizing ADC dynamic range without external gain.
Typical applications include automotive engine control (MAP sensing, EGR monitoring), HVAC blower and filter diagnostics, barometric altitude and weather instruments, industrial process monitoring, medical respiratory equipment and sealed-enclosure leak detection. In each case the sensor substitutes for a discrete amplified bridge circuit at a fraction of the design effort.
When designing with this part, place 100 nF decoupling close to the supply pin and drive the analog output through a low-impedance buffer or directly into an ADC with a high-impedance input. The top-side tube port should be sealed with an O-ring and protected against moisture and contamination, and the hose should be sized to avoid pressure drops across the full flow range. This page combines distributor pricing, drop-in compatible alternatives from the MPXH6250A family and verified cross-reference data not aggregated in the manufacturer datasheet alone.
Drop-in alternatives for MPXH6250AC6T1 — 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 MPXH6250AC6T1 (same form factor and footprint) — differing in Output Type, Supply Voltage, Temperature Compensation, Accuracy, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXH6250AC6U
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →MPXH6250A6T1
✅ Drop-In✓ In Stock
$6.55 / Unit
View Datasheet →MPXH6300AC6T1
✅ Drop-In✓ In Stock
$5.51 / Unit
View Datasheet →MPXH6400AC6T1
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →MPXAZ6250AC6T1
✅ Drop-In📋 Reference alternative (not in catalog)
MPXH6250AC6T1-ND
✅ Drop-In📋 Reference alternative (not in catalog)
MPXH6250AC6T1 Maximum Ratings & Electrical Characteristics
| Manufacturer | STMicroelectronics (formerly Freescale / NXP) |
| Series | MPXH6250A |
| Sensor Type | Absolute Pressure Sensor |
| Technology | Piezoresistive MEMS with integrated CMOS signal conditioning |
| Pressure Range | 20 kPa to 250 kPa (2.9 PSI to 36.26 PSI) |
| Output Type | Analog Voltage, Ratiometric |
| Output Voltage Range | 0.3 V to 4.9 V |
| Supply Voltage | 5.0 V typical |
| Pressure Port | Top-side male tube, 3.3 mm (0.13") diameter |
| Port Style | Vertical / top-mounted with integrated tube |
| Package / Case | 8-SOIC (0.335", 8.50 mm width), Top Port |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| Response Time | 1 ms typical |
| Accuracy | Calibrated on-chip with temperature compensation |
| RoHS Status | Compliant |
| Lead Free | Yes |
MPXH6250AC6T1 Pin Configuration
| Pin 1 | VCC — 5 V supply input |
| Pin 2 | GND — Ground |
| Pin 3 | VOUT — Analog output, 0.3 V to 4.9 V ratiometric |
| 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
MPXH6250AC6T1 is suitable for 7 applications: Automotive Manifold Absolute Pressure (MAP) Sensing, HVAC Blower and Filter Pressure Drop Monitoring, Barometric Altitude and Weather Station Sensor, Industrial Process Monitoring and Sealed Enclosure Diagnostics, Medical Respiratory and CPAP Equipment, Consumer Drones and UAV Altitude Hold, White Goods and Appliance Pressure Diagnostics.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXH6250AC6T1's 20-250 kPa absolute range maps directly onto the operating envelope of a gasoline engine manifold under normal and boost conditions. Its ratiometric 0.3-4.9 V output on a 5 V rail plugs straight into a typical ECU ADC, and the top-mounted tube port simplifies hose routing. Temperature compensation up to 125C covers under-hood conditions without additional calibration. Compared with a NTC thermistor plus discrete bridge, the on-chip signal conditioning reduces BOM area and improves long-term drift performance.
Recommended
HVAC Blower and Filter Pressure Drop Monitoring
In HVAC systems, the MPXH6250AC6T1 measures the pressure drop across a return-air filter to trigger a replace-filter alert. The 20-250 kPa range captures a typical 50-250 Pa filter load when configured with a venturi or a low-gain pressure stage. The 1 ms response time is well below HVAC control-loop bandwidth, and the SOIC-8 surface-mount footprint integrates onto the main control board. Compared with differential gauge sensors, an absolute reference provides a known baseline unaffected by indoor altitude.
Recommended
Barometric Altitude and Weather Station Sensor
The MPXH6250AC6T1 covers the full barometric envelope from below sea level to high altitude with its 20-250 kPa absolute range. The standard barometric formula (about 11 Pa per meter at sea level) means the device's 230 kPa dynamic range resolves roughly 8,000 m of altitude - more than enough for drones, weather stations and portable altimeters. Its 0.3-4.9 V analog output is read by a low-cost 10-bit ADC without signal conditioning, and the integrated temperature compensation removes the need for an external thermistor.
Recommended
Industrial Process Monitoring and Sealed Enclosure Diagnostics
The MPXH6250AC6T1 monitors vacuum or pressure in sealed industrial enclosures such as pump housings, refrigerant lines and gas analyser cells. The absolute vacuum reference ensures readings are independent of changes in atmospheric pressure from weather or altitude. The 5 V supply integrates with industrial PLC analog-input modules, and the SOIC-8 top-port package simplifies mounting through an enclosure wall. Rated to 125C, the device tolerates the elevated temperatures typical of compressor cabinets and process-control rooms.
Recommended
Medical Respiratory and CPAP Equipment
In CPAP machines, nebulizers and respiratory therapy devices, the MPXH6250AC6T1 monitors the patient-side airway pressure to control blower speed and detect mask leaks. The 0.3-4.9 V analog output drives an ADC at typical 10-100 Hz sample rates supported by the 1 ms response time. The vacuum-referenced absolute output provides a stable baseline unaffected by ambient pressure, which is important in environments where barometric pressure varies with weather. The medical-relevant accuracy of the on-chip compensation supports therapeutic pressure delivery.
Recommended
Consumer Drones and UAV Altitude Hold
Drone flight controllers use the MPXH6250AC6T1 for altitude-hold feedback in GPS-denied environments. The 20-250 kPa absolute range covers takeoff through 8 km service ceiling, and the 1 ms response time supports 100 Hz control loops. The 8-SOIC top-port package fits onto small flight-controller boards, and the ratiometric output resolves directly to altitude through the standard barometric formula. Compared with digital-output barometric ICs, the analog interface allows lower MCU overhead and removes I2C bus contention with magnetometers.
Recommended
White Goods and Appliance Pressure Diagnostics
The MPXH6250AC6T1 supports diagnostic pressure measurement in dishwashers, washing machines and refrigeration systems. It detects pump blockage, water-supply failure and refrigerant pressure anomalies. The 5 V analog output interfaces with the appliance's main microcontroller ADC, eliminating a dedicated sensor interface. The on-chip temperature compensation reduces drift across the appliance's ambient range, and the SOIC-8 top-port package simplifies hose assembly during production. Compared with external amplified bridge designs, the integrated part reduces calibration effort and BOM count.
Recommended
Recommended Products Summary
Engineering reference data for MPXH6250AC6T1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXH6250AC6U | MPXH6250A6T1 | MPXH6300AC6T1 | MPXH6400AC6T1 | MPXAZ6250AC6T1 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 8-SOIC top port | 8-SOIC top port - same | 8-SOIC top port - same | 8-SOIC top port - same | 8-SOIC top port - same | 8-SOIC top port - same |
| Pressure Range | 20 - 250 kPa | 20 - 250 kPa | 20 - 250 kPa | 20 - 300 kPa | 20 - 400 kPa | 20 - 250 kPa |
| Output Voltage Range | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V |
| Supply Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Pressure Port | Top male tube, 3.3 mm | Top male tube, 3.3 mm | Top male tube, 3.3 mm | Top male tube, 3.3 mm | Top male tube, 3.3 mm | Top male tube, 3.3 mm |
| AEC-Q100 Qualified | Not declared | Not declared | Not declared | Not declared | Not declared | Yes (automotive grade) |
| Packaging Format | Tape & Reel, 7-inch | Tube | Tape & Reel, 7-inch | Tape & Reel, 7-inch | Tape & Reel, 7-inch | Tape & Reel, 7-inch |
Key Differentiators
- Drop-in field-replacement across the MPXH6250A family (vs MPXH6250AC6U, MPXH6250A6T1, MPXH6300AC6T1, MPXH6400AC6T1)
- Automotive grade via drop-in MPXAZ variant (vs MPXH6250AC6T1 vs MPXAZ6250AC6T1)
- Ratiometric 0.3-4.9 V output maximises ADC dynamic range (vs Digital barometric sensors such as Bosch BMP280)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as physically possible to the VCC pin (pin 1) and a 1 uF bulk capacitor at the supply trace entry. The MPXH6250A datasheet notes that the ratiometric output is calibrated against the supply voltage; ripple on VCC greater than about 20 mV will show up directly in the output and reduce accuracy. Use a low-noise LDO (e.g., TPS7A47 or equivalent) for the supply if the host 5 V rail is shared with motors or relays.
Route the analog output (pin 3) on a dedicated analog ground island and avoid running digital return currents beneath the sensor die. The top-mounted tube port should use flexible silicone tubing with an O-ring seal to isolate the port from PCB stress; mechanical strain on the SOIC package can shift the calibration by several kPa. Keep high-current traces (MOSFETs, inductors) at least 10 mm away to avoid coupled noise.
Do not block or instrument the top tube port during reflow - trapped flux or contaminants will bias the pressure reading. The 8-SOIC top-port package has a dedicated pressure inlet; do not wash the port with solvents that leave residue. Sensor zero offset will drift if the device is mounted near heat sources without thermal isolation. The rated overpressure for the MPXH6250AC6T1 is not separately declared on the standard datasheet excerpt; limit maximum applied pressure to the top of the calibrated range plus a 1.5x margin until the live datasheet is consulted.
Drive the analog output into an ADC input buffer with input impedance above 1 Mohm or directly into a SAR ADC with sample-and-hold capable of 10 kohm source impedance. Settling to 12-bit accuracy requires the bandwidth to be limited to about 10 kHz at the input. For oversample averaging, use the ratiometric transfer function and average at least 4 samples to suppress 60 Hz mains pickup.
Compliance Information
RoHS and lead-free compliance per STMicroelectronics product page. AEC-Q100 qualification is not declared for the standard MPXH6250AC6T1; use the MPXAZ6250AC6T1 for automotive programs. REACH compliance is not separately listed on the standard product page excerpt.
