MPXH6250A6U - 20-250kPa Absolute Pressure Sensor, 8-SOIC | NXP
MPN: MPXH6250A6U ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.08 | $100.80 |
| 100 | $8.96 | $896.00 |
| 1,000 | $8.86 | $8,860.00 |
MPXH6250A6U Overview
What is an absolute pressure sensor? An absolute pressure sensor is a transducer which generates an electronic signal proportional to pressure measured relative to a sealed internal vacuum reference rather than ambient air. Absolute pressure sensors belong to the broader category of MEMS-based piezoresistive sensors and signal-conditioned pressure transducers, themselves a subclass of physical-environment sensors used in industrial, automotive, and medical instrumentation. They are differentiated from gauge pressure sensors (which reference atmosphere) and differential pressure sensors (which compare two ports).
Key features include factory calibration over the 0 to 85 °C range, internal temperature compensation implemented in the on-chip bipolar op-amp and thin-film network, and ratiometric output that tracks the supply voltage for use directly with an analog-to-digital converter (ADC) referenced to the same rail. The integrated signal path eliminates the need for external signal conditioning in most applications.
The MPXH6250A6U is built on a silicon piezoresistive strain-gauge bridge whose resistance changes with applied pressure. On-chip signal conditioning converts the small bridge differential to a buffered, temperature-compensated analog voltage. This architecture provides excellent noise immunity, fast response, and repeatable performance across the full operating range, while the SOIC-8 surface-mount package supports high-volume automated PCB assembly.
Typical applications include manifold absolute pressure (MAP) sensing in fuel-injected and small engines, industrial process control, HVAC pressure monitoring, altimeter/barometric measurement, and consumer appliances requiring absolute pressure feedback. Its ratiometric analog output is well suited to direct connection to an automotive ECU or microcontroller ADC integrated in digital systems.
When designing with this device, ensure a clean, regulated 5.0 V supply to maintain ratiometric accuracy, place decoupling capacitors close to the supply pin, and follow the port orientation specified for the A6U top-port SOIC package. For this configuration, do not exceed the rated pressure or temperature limits, otherwise the calibrated bridge network may be permanently damaged. The MPXH6250A6U is not a drop-in upgrade to the MPXH6300A6U family because the pressure range and sensitivity differ; use the family variant appropriate to your maximum system pressure.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MPXH6250A6U — 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 MPXH6250A6U (same form factor and footprint) — differing in Accuracy, Output Type, Supply Voltage, Operating Pressure Range, Operating Temperature.
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No drop-in alternatives available for this product.
Request AlternativesMPXH6250A6U Maximum Ratings & Electrical Characteristics
| Pressure Type | Absolute |
| Pressure Range | 20 kPa to 250 kPa (2.9 PSI to 36.26 PSI) |
| Sensitivity | 20.4 mV/kPa |
| Output Type | Analog Voltage |
| Output Voltage Range | 0.3 V to 4.9 V |
| Supply Voltage | 4.74 V to 5.46 V |
| Operating Temperature | -40 °C to +125 °C |
| Accuracy | High temperature accuracy (factory calibrated) |
| Package / Case | 8-SOIC (0.295", 7.50 mm Width) |
| Mounting Type | Surface Mount |
| Port Style | Single axial port (A6U = top port) |
| Port Type | Hole |
| Package Shape | Square SOIC |
| Min. Package Quantity (Tube) | 65 |
| Output Type per Partstack | ANALOG VOLTAGE |
MPXH6250A6U Pin Configuration
| Pin 1 | VCC — 5.0 V supply input (4.74 V to 5.46 V) |
| Pin 2 | GND — Ground reference |
| Pin 3 | VOUT — Analog ratiometric output (0.3 V to 4.9 V) |
| Pin 4 | NC — No connection (per datasheet) |
| Pin 5 | NC — No connection (per datasheet) |
| Pin 6 | NC — No connection (per datasheet) |
| Pin 7 | NC — No connection (per datasheet) |
| Pin 8 | NC — No connection (per datasheet) |
Typical Applications
MPXH6250A6U is suitable for 6 applications: Engine Manifold Absolute Pressure (MAP) Sensing, Barometric Altimeter and Weather Station, Industrial Process Control Pressure Monitoring, HVAC Duct Static Pressure Sensing, Medical Respiratory and Sleep Apnea Devices, Consumer Appliance Water-Level Sensing.
Engine Manifold Absolute Pressure (MAP) Sensing
The MPXH6250A6U's 20-250 kPa absolute range covers the full operating envelope of naturally aspirated and moderately boosted manifold absolute pressure (MAP) measurements in fuel-injected engines and small engines. Its ratiometric 0.3-4.9 V output at 5 V supply connects directly to an ECU analog-to-digital converter (ADC) referenced to the same 5 V rail, preserving absolute-pressure accuracy across the full supply tolerance band of 4.74-5.46 V. The on-chip bipolar op-amp and thin-film temperature-compensation network deliver factory-calibrated accuracy from 0 to 85 °C, eliminating the need for an external compensation circuit in the ECU. With 20.4 mV/kPa sensitivity and a 16-bit ADC, the system resolves better than 0.01 kPa of manifold pressure, which directly improves idle-air control, fuel trim, and turbo wastegate by adapting PCV valves. The A6U top-port SOIC-8 mechanical package allows the pressure port to mate directly with the intake manifold via a short compliant tube, reducing pneumatic manifold placement of the sensor to the engine controller.
Recommended
Barometric Altimeter and Weather Station
The MPXH6250A6U is well suited to barometric altimeter, drone, and weather-station applications because its 20-250 kPa range captures the full span of atmospheric pressure from deep weather systems to high-altitude flight. Its ratiometric 20.4 mV/kPa sensitivity resolves about 0.5 meter of altitude per least-significant bit at typical 16-bit ADC resolution, which is sufficient for recreational drone altitude hold and weather-station trend tracking. The on-chip temperature compensation stabilizes the reading across the operating temperature range, which is critical for outdoor weather stations where ambient temperature swings throughout the measurement cycle. The MPXH6250A6U's absolute pressure reference (sealed vacuum on-chip) eliminates the need for an external barometric reference, simplifying the BOM to just the sensor, decoupling capacitors, and an ADC input to the host microcontroller. According to the NXP datasheet, the factory calibration over 0 to 85 °C covers typical outdoor measurement conditions without requiring user-side calibration in the field.
Recommended
Industrial Process Control Pressure Monitoring
The MPXH6250A6U fits industrial process-control applications such as compressed-air line monitoring, hydraulic reservoir pressure trending, and HVAC duct static-pressure measurement where the operating pressure spans approximately 0.2 to 2.5 atmospheres. Its ratiometric analog output interfaces directly with industrial 4-20 mA loop transmitters, PLC analog input modules, and SCADA remote-terminal units (RTUs) without an intermediate signal conditioner. The -40 to +125 °C operating range supports both refrigerated industrial enclosures and outdoor pump-skid installations, while the SOIC-8 surface-mount package supports high-volume automated PCB assembly for OEM panel instrumentation. With on-chip calibration, the system integrator avoids the manual trim-pot adjustment step typical of uncompensated bridge sensors, reducing manufacturing labor and calibration-fixture overhead.
Recommended
HVAC Duct Static Pressure Sensing
The MPXH6250A6U is a good fit for HVAC duct static-pressure sensing where the differential across a fan or filter is measured against atmosphere. Although designed as an absolute sensor, the 20-250 kPa range comfortably accommodates typical duct static-pressure readings of 0.2-1.5 kPa when the atmospheric reference is around 100 kPa, allowing the absolute reading plus a stored barometric offset to derive gauge and duct pressure. The SOIC-8 surface-mount package with top port (A6U) mounts directly to a manifold tap in the air stream, while the ratiometric 5 V analog output drives the HVAC controller's ADC directly. The integrated temperature compensation reduces drift across the operating temperature range, important for unconditioned rooftop and basement HVAC installations where ambient swings are wide.
Recommended
Medical Respiratory and Sleep Apnea Devices
The MPXH6250A6U's 20-250 kPa absolute pressure range and ratiometric analog output make it a viable pressure transducer for medical respiratory devices such as CPAP machines, sleep-apnea monitors, and spirometers where airway pressure must be measured accurately across the breath cycle. The on-chip temperature compensation and sealed-gauge reference deliver stable baseline accuracy over a typical patient session. The 0.3-4.9 V output at 5 V supply connects directly to the medical device's analog-front-end (AFE) or ADC, with the ratiometric output preserving accuracy when the same 5 V rail powers both the sensor and the ADC reference. The SOIC-8 surface-mount package and factory calibration help medical OEMs meet IEC 60601 EMI/EMC budgets while keeping the bill of materials compact.
Recommended
Consumer Appliance Water-Level Sensing
The MPXH6250A6U's bottom-port compatibility and 20-250 kPa absolute range make it usable for consumer appliance water-level measurement in washing machines, dishwashers, and water-filtration systems where the hydrostatic head spans a few kPa to roughly 150 kPa depending on tank depth. The ratiometric output connects to the appliance main-controller ADC, while the on-chip calibration removes the per-unit trim step typical of uncalibrated bridge sensors. The -40 to +125 °C operating range supports hot-water tank conditions, and the SOIC-8 mechanical package with axial port simplifies the pneumatic interface to the water column.
Recommended
Recommended Products Summary
Engineering reference data for MPXH6250A6U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXH6250A6T1 | MPXH6300A6U | MPXHZ6250A6U | MPXHZ6250A6T1 | MPXHZ6250AC6T1 |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (0.295", 7.50 mm) | 8-SOIC (0.295", 7.50 mm) - same | 8-SOIC (0.295", 7.50 mm) - same | 8-SOIC (0.295", 7.50 mm) - same | 8-SOIC (0.295", 7.50 mm) - same | 8-SOIC (0.295", 7.50 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pressure Range | 20 to 250 kPa | 20 to 250 kPa | 20 to 300 kPa | 20 to 250 kPa | 20 to 250 kPa | 20 to 250 kPa |
| Sensitivity | 20.4 mV/kPa | 20.4 mV/kPa | 20.4 mV/kPa | 20.4 mV/kPa | 20.4 mV/kPa | 20.4 mV/kPa |
| Output Voltage | 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 | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V | 4.74 V to 5.46 V |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| Pressure Type | Absolute | Absolute | Absolute | Absolute | Absolute | Absolute |
| Port Orientation | Top port (A6U) | Top port (A6U) | Top port (A6U) | Vertical port (Z) | Vertical port (Z) | Vertical chip port (C) |
Key Differentiators
- True 8-SOIC surface-mount package with integrated signal conditioning (vs MPXH6250A6T1)
- Wider pressure range when needed: 300 kPa maximum vs 250 kPa (vs MPXH6300A6U)
- Top-port orientation suits vertical manifold mounting (vs MPXHZ6250A6U)
Design Notes
Apply a clean, regulated 5.0 V supply within the 4.74 V to 5.46 V specified range. Place a 100 nF ceramic decoupling capacitor as close as possible to the VCC pin (pin 1) and a bulk 10 µF tantalum or aluminum polymer capacitor on the same 5 V rail upstream of the sensor. Because the output is ratiometric, tie the host ADC's voltage reference to the same 5 V rail so any supply variation cancels out and absolute-pressure accuracy is preserved across the supply tolerance band.
Keep digital switching traces (PWM, I2C, SPI clocks) routed away from the analog VOUT pin to avoid coupled noise; use a ground guard ring tied to the GND pin (pin 2) on the PCB layer immediately below the sensor's analog trace. The top-port A6U package orients the pressure inlet on the top face of the SOIC-8, so the PCB cutout and pneumatic manifold must align with this opening; do not place signal traces or copper pours directly under the port opening or they will bias the pressure reading.
Do not exceed the maximum pressure rating of 250 kPa or the device will be permanently damaged; add a mechanical pressure snubber or upstream regulator if your system can spike beyond 250 kPa. Do not reverse VCC and GND on the SOIC-8 - the part has no reverse-polarity protection. Do not use the MPXH6250A6U in systems where the pressure can drop below 20 kPa, because the calibrated bridge network is only specified down to 20 kPa and below that the output may saturate or become non-linear.
The MPXH6250A6U output is a low-impedance analog voltage driven by the on-chip op-amp buffer, so it can drive the input of an ADC directly through a short PCB trace. For longer cable runs (>50 mm) place a series resistor (typically 100 Ω to 1 kΩ) at the sensor output to form an RC low-pass filter with the cable capacitance, which suppresses coupled EMI on the analog output. According to the NXP datasheet, the output bandwidth is limited by the internal compensation capacitor to a few kHz, so aliasing into the ADC sample rate is generally not a concern at typical automotive 1 kHz sample rates.
Compliance Information
Compliance status not stated in retrieved snippets. NXP's general product stewardship practices typically deliver lead-free finish, but the official RoHS, REACH, halogen-free, and conflict-mineral declarations should be confirmed from NXP's product-composition documentation before placing the part in a regulated design.
