MPXH6300AC6U - 20-304kPa Absolute Pressure Sensor 5V SOP-8 | NXP
MPN: MPXH6300AC6U ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.08 | $100.80 |
| 100 | $8.96 | $896.00 |
| 500 | $8.12 | $4,060.00 |
| 1,000 | $7.8 | $7,800.00 |
MPXH6300AC6U Overview
An absolute pressure sensor is a MEMS-based transducer that measures pressure referenced to a sealed internal vacuum rather than ambient atmosphere, producing a stable reading independent of weather or altitude. These sensors sit inside the broader sensor hierarchy: pressure sensor -> MEMS device -> semiconductor sensor -> electronic transducer. Absolute-pressure variants are preferred where the measurement must track a fixed reference rather than a moving one, which is critical for engine manifold absolute pressure (MAP) sensing, sealed-system leak testing, barometric corrections, and altitude calibration.
Key features include a calibrated accuracy of approximately ±1.5% VFSS over 0 C to 85 C, on-chip signal conditioning that eliminates external compensation components, automotive-grade temperature endurance up to 125 C, and a robust ported SSOP-8 small outline package. The integrated bipolar op-amp front end and laser-trimmed thin-film resistor network remove the need for external op-amps or trim pots, simplifying PCB layout and shortening design cycles for high-volume automotive and industrial modules.
The MPXH6300AC6U uses piezoresistive silicon strain gauges diffused into a diaphragm, with an on-chip bipolar op amp stage and ratiometric output relative to VCC. Ratiometricity means the output scales with the supply voltage, so a stable 5 V reference (or a well-decoupled 5 V rail) is required to preserve absolute accuracy; a drifting 5 V supply will directly scale the reading. The vacuum-referenced sealed die produces a true absolute measurement, eliminating barometric compensation in software.
Typical applications include automotive manifold absolute pressure (MAP) sensing, HVAC pressure monitoring, industrial process control, barometric altimetry for drones and weather stations, and sealed-system leak detection. The wide 20-304 kPa range comfortably spans sub-atmospheric manifold vacuum (down to 20 kPa absolute) through turbocharged boost pressure (up to ~3 bar absolute). When designing with this part, hold the 5 V supply within ±5% and add 100 nF + 10 uF decoupling close to VCC and GND to preserve ratiometric accuracy and reject supply noise on the analog output.
Drop-in alternatives for MPXH6300AC6U — 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 MPXH6300AC6U (same form factor and footprint) — differing in Output Type, Package, Supply Voltage, Operating Pressure Range, Output Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXH6300AC6T1
✅ Drop-In✓ In Stock
$5.51 / Unit
View Datasheet →MPXH6300A6U
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →MPXH6300A6T1
✅ Drop-In📋 Reference alternative (not in catalog)
MPXHZ6400A6T1
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →MPXH6400AC6T1
✅ Drop-In✓ In Stock
$5.25 / Unit
View Datasheet →MPXH6300AC6U Maximum Ratings & Electrical Characteristics
| Pressure Type | Absolute (vacuum-referenced) |
| Pressure Range | 20 kPa to 304 kPa (2.9 PSI to 44.09 PSI) |
| Supply Voltage (VCC) | 4.75 V to 5.25 V (5 V typical) |
| Output Voltage Span | 0.3 V to 4.9 V |
| Sensitivity | 16.2 mV/kPa (typical) |
| Accuracy | +/- 1.5% VFSS (0 C to 85 C) |
| Operating Temperature | -40 C to +125 C |
| Package | 8-SOIC / SSOP-8 (0.335 inch / 8.50 mm width), Top Port |
| Port Style | Axial top port for 0.13 inch (3.3 mm) tube |
| Output Type | Analog, ratiometric to VCC |
| On-chip Signal Conditioning | Yes (bipolar op amp + thin-film resistor network) |
| Compensation | On-chip temperature compensated and calibrated |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Grade | AEC-Q100 qualified (MPXH6300A series) |
MPXH6300AC6U Pin Configuration
| Pin 1 | VCC — 5 V supply input |
| Pin 2 | GND — Ground reference |
| Pin 3 | Vout — Analog ratiometric 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
MPXH6300AC6U is suitable for 6 applications: Automotive Manifold Absolute Pressure (MAP) Sensing, HVAC Refrigerant Pressure Monitoring, Industrial Pneumatic System Monitoring, Barometric Altimeter / Weather Station, Sealed-System Leak Detection, Medical Respiratory / CPAP Pressure Monitoring.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXH6300AC6U's 20-304 kPa absolute range, 5 V ratiometric 0.3-4.9 V output, and AEC-Q100 automotive temperature grade (-40 C to +125 C) make it an ideal fit for engine MAP sensing. At idle, manifold vacuum drops to 30-50 kPa, well inside the lower limit, while naturally-aspirated full-load reaches 100 kPa and mild turbo boost can climb toward 250 kPa, all comfortably below the 304 kPa ceiling. The on-chip calibrated output drives a 5 V ADC directly without external op-amps, simplifying ECU front-end design. The 16.2 mV/kPa sensitivity yields about 5.4 mV per PSI, providing resolution sufficient for closed-loop fuel and ignition control.
Recommended
HVAC Refrigerant Pressure Monitoring
The MPXH6300AC6U's 20-304 kPa absolute range covers the high-side refrigerant pressures of common HVAC systems (R-410A high side runs 1500-2500 kPa, so a downstream pressure step-down is required, but low-side suction at 100-500 kPa absolute falls inside the sensor span with safety margin). The 0.3-4.9 V analog output feeds directly into HVAC controller ADCs, while on-chip temperature compensation keeps accuracy inside +/- 1.5% VFSS across 0-85 C operating conditions typical of indoor air-handling units. The top-port axial fitting accepts standard 0.13 inch tubing used in HVAC service manifolds, eliminating custom adaptors.
Recommended
Industrial Pneumatic System Monitoring
Factory pneumatic systems operate at 600-800 kPa typical line pressure, but downstream regulated supply drops to 200-400 kPa at the actuator, which the MPXH6300AC6U covers with margin. The on-chip bipolar op amp and thin-film resistor network deliver a calibrated, temperature-stable ratiometric output, eliminating the need for external signal conditioning in PLC analog input modules. The robust SSOP-8 surface-mount package withstands factory floor vibration, while the top axial port accepts standard 0.13 inch (3.3 mm) pneumatic tubing for direct inline installation.
Recommended
Barometric Altimeter / Weather Station
The MPXH6300AC6U's vacuum-referenced absolute pressure measurement makes it well suited for barometric altimetry, since the reading is independent of weather and altitude changes rather than tracking a moving atmospheric reference. Pressure at sea level is approximately 101.3 kPa, dropping to about 30 kPa at 9000 m altitude, both within the sensor's 20-304 kPa span. The 16.2 mV/kPa sensitivity combined with a 12-bit ADC at 5 V reference gives a per-bit resolution near 1.2 kPa, sufficient for +/- 100 m altitude precision when averaged. Weather stations benefit from the on-chip temperature compensation that holds accuracy across diurnal temperature swings.
Recommended
Sealed-System Leak Detection
The MPXH6300AC6U's sealed-vacuum reference die delivers true absolute pressure measurements critical for leak testing of enclosures, vacuum-insulated panels, and hermetically sealed electronics packages. By sealing the device under test and monitoring pressure decay over time with the MPXH6300AC6U, leaks as small as a few Pa per minute can be detected using averaging. The 0.3 V output at 20 kPa sets a clear floor for the test, while the 4.9 V ceiling accommodates pressurized leak tests up to 304 kPa. The on-chip calibration reduces fixture-to-fixture variance, simplifying pass/fail thresholds.
Recommended
Medical Respiratory / CPAP Pressure Monitoring
Although not a medical-grade certified device, the MPXH6300AC6U's calibrated accuracy and temperature stability make it a candidate for non-critical medical pressure monitoring such as CPAP machine inlet pressure verification, ventilator bias-line sensing, and anesthesia circuit manometer backup displays. CPAP pressures typically run 4-20 cmH2O (approximately 0.4-2 kPa gauge, or 101-103 kPa absolute), well inside the sensor's lower span where the 16.2 mV/kPa sensitivity gives visible voltage shift. Designers must perform their own validation; the part is intended as a design-in reference for prototyping rather than a regulatory-cleared medical component.
Recommended
Recommended Products Summary
Engineering reference data for MPXH6300AC6U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXH6300AC6T1 | MPXH6300A6U | MPXH6300A6T1 | MPXHZ6400A6T1 | MPXH6400AC6T1 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | SSOP-8 (top port, 0.335 inch width) | SSOP-8 (top port) - same | SSOP-8 (top port) - same | SSOP-8 (top port) - same | SSOP-8 (top port) - same | SSOP-8 (top port) - same |
| Pressure Range | 20 kPa to 304 kPa | 20 kPa to 304 kPa | 20 kPa to 304 kPa | 20 kPa to 304 kPa | 20 kPa to 400 kPa | 20 kPa to 400 kPa |
| Output Voltage Span | 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 | 0.2 V to 4.8 V | 0.2 V to 4.8 V |
| Supply Voltage | 5 V (4.75 V to 5.25 V) | 5 V | 5 V | 5 V | 5 V | 5 V |
| Automotive Grade (AEC-Q100) | MPXH6300A series qualified | MPXH6300A series qualified | Yes (AEC-Q100 qualified) | Yes (AEC-Q100 qualified) | Yes (AEC-Q100 qualified) | Yes (AEC-Q100 qualified) |
| 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 |
| Packaging | Tube (MOQ 55) | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Highest parametric match in same-family NXP alternatives (vs MPXH6300AC6T1)
- Higher maximum pressure ceiling for boosted engines (vs MPXHZ6400A6T1)
- Tube packaging for low-volume prototyping (vs MPXH6300A6T1)
Design Notes
The MPXH6300AC6U output is ratiometric to VCC, so any supply drift or noise on the 5 V rail scales directly into the pressure reading. Place a 100 nF ceramic decoupling capacitor as close as possible to VCC (pin 1) and a 10 uF bulk capacitor on the supply rail feeding the sensor. Estimated: at 5 V +/- 0.1 V (2% supply tolerance), the absolute pressure error at full scale approaches +/- 6 kPa, so a tight LDO or low-dropout post-regulator is recommended upstream of the sensor for precision applications.
Route the analog Vout trace away from switching converter nodes, motor drive traces, and high-current return paths; keep the trace short and add a small RC filter (10 kohm + 100 nF) at the ADC input for additional noise rejection. The top-port package puts the pressure inlet above pin 1, so orient the sensor on the PCB with the port clear of tall components that could kink or crush the 3.3 mm pneumatic tube. Apply a small bead of RTV silicone around the port base to mechanically decouple the tube from the package.
Do not assume the MPXH6300AC6U is pin-compatible with the MPX5700 series or MPX4105 family - those use different SSOP pin assignments and output spans. Confirm the absolute vs gauge type: this part measures absolute pressure (vacuum-referenced), so a vented gauge-port sensor is not a substitute. The output at 20 kPa absolute is 0.3 V, NOT 0 V; reading 0 V on the output indicates either a supply failure, an open Vout pin, or a shorted output - never a real 0 kPa pressure, since the absolute reference is vacuum.
Although the sensor includes on-chip temperature compensation, mounting near hot components (power resistors, inductors, MCU) can introduce thermal gradients across the die that drift the output by an extra +/- 1% FS. Estimated: at 1 mm distance from a 1 W heat source, the die temperature rise approaches 8-10 C, so place the sensor at least 10 mm away from significant heat generators and consider thermal copper relief under the package to slow die temperature changes during load transients.
Compliance Information
RoHS compliant per NXP product page. AEC-Q100 qualified (MPXH6300A series). MSL rating not explicitly stated in retrieved data - see [DATA_NEEDED] in specs. Last-time-buy status per NXP product change notice.
