MPXHZ6250AC6T1 - 20-250kPa Absolute Pressure Sensor | STMicroelectronics
MPN: MPXHZ6250AC6T1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
MPXHZ6250AC6T1 Overview
What is an absolute pressure sensor? An absolute pressure sensor is a transducer that measures pressure relative to a perfect vacuum (zero reference), as opposed to gauge or differential sensors that measure relative to ambient or another port. Absolute pressure sensors are widely used in applications where a fixed vacuum reference is required - including barometric measurement, altimetry, weather stations, engine manifold absolute pressure (MAP) sensing, and sealed-system monitoring. Absolute pressure sensors sit within the broader hierarchy of pressure transducers -> MEMS sensors -> sensors -> electronic components.
Key features include ±1.5 %FS accuracy, on-chip signal conditioning, calibrated and temperature-compensated output over the full -40 °C to +125 °C automotive range, and a media-resistant top-side port that accepts a 3.3 mm tube for pneumatic connection. The piezoresistive transducer element uses advanced micromachining and bipolar semiconductor processing for high reliability and stable long-term output. Supply voltage is nominally 5 V, and the ratiometric analog output simplifies ADC interfacing without precision voltage references.
The architecture combines a monolithic silicon strain-gauge bridge with on-chip signal conditioning - including a precision bandgap reference, temperature compensation network, and output amplifier - so no external compensation components are required. This integrated approach achieves a calibrated, ratiometric output within ±1.5 %FS across the full pressure and temperature range, eliminating the need for end-of-line calibration in many applications. The exposed top-side port accepts standard 3.3 mm pneumatic tubing for direct media connection.
Typical applications include manifold absolute pressure (MAP) sensing in automotive engine control units, barometric pressure measurement for weather stations and altimeters, industrial process control, HVAC pressure monitoring, and consumer appliance pressure sensing. The wide operating temperature range and high accuracy make the MPXHZ6250AC6T1 particularly suited for under-hood automotive and industrial environments. The top-port package simplifies manifold mounting compared to side-port alternatives.
When designing with this device, ensure a stable 5 V supply and add a small RC filter on the output to suppress high-frequency noise from switching regulators and EMI sources in electrically noisy environments such as automotive engine bays. The ratiometric output means the supply voltage must be accurate or the output reading will scale proportionally with VCC.
Drop-in alternatives for MPXHZ6250AC6T1 — 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 MPXHZ6250AC6T1 (same form factor and footprint) — differing in Supply Voltage, Output Type, Accuracy, Port Style, Temperature Compensation.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXHZ6250AC6U
✅ Drop-In📋 Reference alternative (not in catalog)
MPXH6250AC6T1
✅ Drop-In✓ In Stock
$5.95 / Unit
View Datasheet →MPXH6250AC6U
✅ Drop-In✓ In Stock
$6.05 / Unit
View Datasheet →MPXH6300AC6T1
✅ Drop-In✓ In Stock
$5.51 / Unit
View Datasheet →MPXH6400AC6T1
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →MPXHZ6250AC6T1 Maximum Ratings & Electrical Characteristics
| Pressure Type | Absolute |
| Operating 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 |
| Accuracy | ±1.5 %FS |
| Supply Voltage | 5 V (typical, ratiometric) |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | 8-SOIC (0.335", 8.50 mm Width), Top Port |
| Port Type | Male - 0.13" (3.3 mm) Tube, Top Axial |
| Pressure Port Orientation | Top |
| Technology | Piezoresistive MEMS with on-chip signal conditioning |
| Mounting Type | Surface Mount |
| Media Compatibility | Media resistant (top-side port) |
| Temperature Compensation | On-chip, calibrated -40 °C to +125 °C |
| RoHS Status | Compliant |
MPXHZ6250AC6T1 Pin Configuration
| Pin 1 | VCC — 5 V supply input |
| Pin 2 | GND — Ground reference |
| Pin 3 | VOUT — Analog pressure output (0.3 V to 4.9 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
MPXHZ6250AC6T1 is suitable for 7 applications: Automotive Engine MAP Sensing, Barometric Pressure Measurement, HVAC Pressure Monitoring, Industrial Process Control, Consumer Appliance Sensing, Medical Respiratory Equipment, Drone Altitude Sensing.
Automotive Engine MAP Sensing
The MPXHZ6250AC6T1 is purpose-built for manifold absolute pressure (MAP) sensing in port-fuel-injected and direct-injection engine control units. Its 20-250 kPa range covers atmospheric pressure (typically 100 kPa) plus turbo/supercharger boost up to ~150 kPa, providing accurate cylinder filling estimation across idle to wide-open throttle. The on-chip temperature compensation across -40 °C to +125 °C eliminates cold-start drift in under-hood environments, while the top axial port simplifies direct manifold mounting with 3.3 mm pneumatic tubing. Compared to gauge sensors, the absolute reference ensures consistent readings regardless of ambient pressure changes with altitude, critical for modern ECU strategies including altitude compensation and transient fuel trim.
Recommended
Barometric Pressure Measurement
The MPXHZ6250AC6T1 delivers reliable barometric pressure readings for weather stations, altimeters, and GPS augmentation devices. Its 20-250 kPa absolute range fully covers sea-level standard atmosphere (101.325 kPa) plus high-altitude operation up to ~8 km, where pressure drops to ~35 kPa. The ±1.5 %FS accuracy translates to roughly ±1.5 mbar at sea level, sufficient for typical weather observation and altitude calculation when paired with temperature data. On-chip calibration eliminates the need for end-of-line factory trim, simplifying high-volume consumer weather instrument manufacturing. The SOIC-8 surface-mount package enables compact PCB integration alongside wireless modules for IoT weather nodes.
Recommended
HVAC Pressure Monitoring
For commercial and industrial HVAC systems, the MPXHZ6250AC6T1 provides reliable absolute pressure monitoring in ductwork, refrigerant lines (within media-compatible limits), and air-handling units. Its 20-250 kPa range covers typical HVAC static pressure measurements from filtered return air (slightly below atmospheric) to slightly pressurized supply ducts. The on-chip temperature compensation maintains accuracy across the wide thermal swings common in mechanical rooms and rooftop installations, while the top port simplifies duct tap mounting. Ratiometric 5 V output interfaces directly with common HVAC controller ADCs without precision voltage references, reducing BOM cost and design complexity.
Recommended
Industrial Process Control
In industrial process control, the MPXHZ6250AC6T1 serves as a sealed-system pressure monitor for hydraulic reservoirs, pneumatic tooling supply lines, and vacuum chamber roughing systems. The 20-250 kPa range covers both vacuum-side measurements (down to 20 kPa absolute) and modest positive pressures, while the ±1.5 %FS accuracy suits closed-loop control applications. The robust -40 °C to +125 °C operating range supports outdoor and factory-floor deployments. The integrated temperature compensation eliminates drift that would otherwise require periodic recalibration, reducing field service intervals. The SOIC-8 surface-mount package enables compact controller board integration.
Recommended
Consumer Appliance Sensing
The MPXHZ6250AC6T1 integrates into consumer appliances including washing machines (water level sensing within pressure-transducer air traps), vacuum cleaners (suction monitoring), and kitchen equipment (steam pressure monitoring in espresso machines and pressure cookers). Its small SOIC-8 footprint fits compact appliance control boards, and the on-chip calibration eliminates per-unit factory trimming - a major cost advantage in high-volume consumer manufacturing. The ratiometric 5 V output interfaces directly with microcontroller ADCs, while the media-resistant top port accepts standard pneumatic tubing for sealed-system sensing without additional isolation diaphragms in many applications.
Recommended
Medical Respiratory Equipment
The MPXHZ6250AC6T1 supports medical respiratory and monitoring equipment including ventilators, CPAP/BiPAP machines, and anesthesia workstations, where precise absolute pressure measurement is critical for patient safety. The 20-250 kPa range covers the airway pressure spectrum from atmospheric baseline to therapeutic delivery pressures, while ±1.5 %FS accuracy meets clinical-grade measurement requirements for many monitoring applications. The on-chip temperature compensation maintains calibration across the warm-up cycles typical in continuous-use medical devices. The SOIC-8 package and surface-mount design enable compact integration into portable and bedside medical equipment. Note: medical applications require full system-level validation; this sensor is a component, not a complete medical device.
Recommended
Drone Altitude Sensing
The MPXHZ6250AC6T1 enables altitude-hold functionality in multirotor drones and UAVs by providing barometric pressure data to the flight controller. Its 20-250 kPa range covers full flight envelope from sea level to drone operational ceilings, while fast response time and ±1.5 %FS accuracy support stable altitude hold within decimeter-class precision when combined with accelerometer fusion. The compact SOIC-8 package and low mass suit weight-constrained airframes, and the -40 °C to +85 °C operating range (typical use within full specified range) handles environmental extremes from winter to summer operations. The ratiometric output simplifies power supply design in battery-powered flight platforms.
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Recommended Products Summary
Engineering reference data for MPXHZ6250AC6T1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXHZ6250AC6U | MPXH6250AC6T1 | MPXH6250AC6U | MPXH6300AC6T1 | MPXH6400AC6T1 |
|---|---|---|---|---|---|---|
| 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 |
| Brand | STMicroelectronics | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same |
| Pressure Range | 20-250 kPa | 20-250 kPa - same | 20-250 kPa - same | 20-250 kPa - same | 20-300 kPa (wider) | 20-400 kPa (wider) |
| Output Voltage Range | 0.3 V to 4.9 V | 0.3 V to 4.9 V - same | 0.3 V to 4.9 V - same | 0.3 V to 4.9 V - same | 0.3 V to 4.9 V - same | 0.2 V to 4.9 V - slightly extended low end |
| Sensitivity | 20.4 mV/kPa | 20.4 mV/kPa - same | 20.4 mV/kPa - same | 20.4 mV/kPa - same | 16.7 mV/kPa (lower due to wider range) | 12.5 mV/kPa (lower due to wider range) |
| Accuracy | ±1.5 %FS | ±1.5 %FS - same | ±1.5 %FS - same | ±1.5 %FS - same | ±1.5 %FS - same | ±1.5 %FS - same |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same | -40 °C to +125 °C - same |
| Pressure Type | Absolute | Absolute - same | Absolute - same | Absolute - same | Absolute - same | Absolute - same |
Key Differentiators
- Top axial port with 3.3 mm tube fitting (vs MPXH6250AC6U)
- RoHS-compliant lead-free package (vs MPXH6250AC6T1 (non-Z))
- Tape and reel packaging for high-volume assembly (vs MPXH6250AC6U (tube pack))
Design Notes
The MPXHZ6250AC6T1 requires a stable 5 V supply because its output is ratiometric with VCC. Supply noise couples directly into the output signal and degrades pressure measurement accuracy. Use a low-dropout linear regulator (such as an LM7805 or LDO) to power the sensor, not a switching regulator unless followed by adequate filtering. Add a 0.1 µF ceramic decoupling capacitor as close as possible to the VCC pin (pin 1), with an additional 10 µF bulk capacitor on the supply rail to suppress transient load effects.
The analog output (VOUT, pin 3) is high-impedance and sensitive to EMI pickup, particularly in automotive engine-bay environments. Route VOUT away from switching converter inductors, motor driver traces, and ignition wires. Add a 10 kΩ series resistor at the sensor output combined with a 100 nF capacitor to ground at the ADC input to form a 10 µs RC low-pass filter that suppresses high-frequency EMI without significantly impacting the sensor response time. Use a ground plane under the analog signal traces to minimize loop area.
Do not block the top axial pressure port during PCB assembly or conformal coating - use masking or selective coating to keep the port clear. Avoid applying mechanical stress to the sensor package during board mounting, as the silicon die is sensitive to stress that can shift the output offset. The unused pins (4-8) must be left floating per the datasheet; do not connect them to ground or VCC. Calibration coefficients are stored on-chip at the factory; do not attempt to recalibrate without proper equipment or you may permanently damage the sensor.
Provide a stress-relief cutout in the PCB around the sensor package to decouple mechanical board flexure from the silicon die. Place the sensor near the pressure port inlet to minimize tubing length and dynamic response lag. Use a 3.3 mm ID rigid tube (polyethylene or nylon) for pneumatic connection, secured with a press-fit or barbed fitting. Avoid sharp bends in the tubing that could create pressure drop or turbulence. For media that could damage the sensor (water, oil, aggressive chemicals), use a remote-mount configuration with isolation tubing.
Compliance Information
RoHS compliant per 'Z' suffix in MPN. AEC-Q100 status not explicitly stated in available web data - verify against full ST datasheet for automotive qualification details. REACH compliance assumed from ST product line standards.
