MPXA4115A6T1 - 15-115kPa Absolute Pressure Sensor | NXP
MPN: MPXA4115A6T1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.75 | $87.50 |
| 100 | $7.95 | $795.00 |
| 500 | $7.2 | $3,600.00 |
| 1,000 | $6.65 | $6,650.00 |
MPXA4115A6T1 Overview
A pressure sensor is a transducer that converts an applied pressure into a proportional electrical signal; an absolute pressure sensor references a sealed internal vacuum cavity so its output corresponds to true pressure relative to perfect vacuum rather than ambient atmosphere. Within the broader sensor hierarchy, the MPXA4115A6T1 belongs to the family of piezoresistive silicon MEMS sensors, which dominate automotive and industrial pressure measurement due to their small size, low cost, and integrated analog front-end. The MPX/MPXA series from NXP (formerly Freescale/Motorola) is the de-facto industry-standard MAP sensor family used in engine control units since the 1990s.
Key features include a temperature-compensated output spanning -40 °C to +125 °C, ±1.5 % maximum error over 0 °C to 85 °C as specified in the manufacturer datasheet, media-resistant packaging suitable for harsh manifold environments, and a ratiometric analog interface that simplifies ADC connection. The 8-SMD gull-wing module is a surface-mount variant of the historic MPX-series through-hole package, enabling automated PCB assembly. The integrated bipolar op-amp and thin-film resistor network produce a high-level voltage output without external signal conditioning.
Typical applications include automotive manifold absolute pressure (MAP) sensing in port fuel injection and gasoline direct injection engines, barometric altimeter modules, weather station barometers, industrial pneumatic pressure monitoring, and HVAC differential pressure sensing. The wide supply tolerance (4.85-5.35 V) tracks a typical 5 V regulator output, and the ratiometric output rejects supply variation if the ADC reference is tied to the same rail. When designing with this device, ensure the pressure port O-ring is properly seated and the media compatibility of the gel-protected port with the measured media is confirmed per the manufacturer datasheet.
Drop-in alternatives for MPXA4115A6T1 — 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 MPXA4115A6T1 (same form factor and footprint) — differing in Output Type, Supply Voltage, Package / Case, Port Style, Sensitivity.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MPXAZ4115A6T1
✅ Drop-In✓ In Stock
$9.45 / Unit
View Datasheet →MPXA4115A6U
✅ Drop-In✓ In Stock
$10.5 / Unit
View Datasheet →MPXA4115AP
✅ Drop-In✓ In Stock
$14.2 / Unit
View Datasheet →MPXA4250AC6U
✅ Drop-In✓ In Stock
$9.4 / Unit
View Datasheet →MPX4100A
✅ Drop-In✓ In Stock
$10.85 / Unit
View Datasheet →MPXHZ6400A
✅ Drop-In📋 Reference alternative (not in catalog)
MPXA4115A6T1 Maximum Ratings & Electrical Characteristics
| Pressure Type | Absolute |
| Operating Pressure Range | 15 kPa to 115 kPa (2.18 PSI to 16.68 PSI) |
| Output Voltage Range | 0.2 V to 4.8 V |
| Supply Voltage | 4.85 V to 5.35 V |
| Output Type | Analog, ratiometric |
| Accuracy (0°C to 85°C) | ±1.5 % |
| Operating Temperature | -40 °C to +125 °C |
| Package | 8-SMD Module (Gull Wing) |
| Mounting Type | Surface Mount |
| Port Type | Single axial port (axial lead) |
| Media Compatibility | Media-resistant gel (non-corrosive gases) |
MPXA4115A6T1 Pin Configuration
| Pin 1 | VCC — 5 V supply input |
| Pin 2 | VOUT — Ratiometric analog output (0.2-4.8 V) |
| Pin 3 | GND — Ground |
| Pin 4 | N/C — Not connected (per datasheet) |
| Pin 5 | N/C — Not connected (per datasheet) |
| Pin 6 | N/C — Not connected (per datasheet) |
| Pin 7 | N/C — Not connected (per datasheet) |
| Pin 8 | N/C — Not connected (per datasheet) |
Typical Applications
MPXA4115A6T1 is suitable for 6 applications: Automotive Manifold Absolute Pressure (MAP) Sensing, Barometric Altimeter Module, Weather Station Barometer, Industrial Pneumatic Pressure Monitoring, HVAC Differential Pressure Sensing, Medical Respiratory Pressure Monitoring.
Automotive Manifold Absolute Pressure (MAP) Sensing
The MPXA4115A6T1 is the de-facto industry-standard MAP sensor for port-fuel-injected and GDI engines. Its 15-115 kPa absolute range spans the full manifold-pressure envelope from full-throttle vacuum (~25 kPa) to atmospheric (~100 kPa) and mild boost (~115 kPa). The ratiometric 0.2-4.8 V output feeds an ECU ADC whose reference is tied to the same 5 V rail, eliminating supply-noise errors in the harsh electrical environment of an engine bay. Temperature compensation to ±1.5% from 0-85 °C is sufficient for closed-loop fueling and ignition timing without per-unit calibration.
Recommended
Barometric Altimeter Module
With its absolute pressure reference and 15-115 kPa span, the MPXA4115A6T1 directly drives an altimeter readout covering -500 m to +9000 m altitude, since 1 kPa roughly equals 8.4 m of elevation change. The 5 V ratiometric output pairs cleanly with a 10-bit or 12-bit ADC for handheld GPS units and weather-station barometers. Compared to a digital I2C sensor, the MPXA4115A6T1 offers lower BOM cost and faster sampling without I2C latency. Pair with a precision ADC reference tied to the 5 V rail for best altitude resolution.
Recommended
Weather Station Barometer
The MPXA4115A6T1 measures atmospheric pressure over its 15-115 kPa absolute range at ±1.5% accuracy from 0-85 °C, well within the precision envelope of a home or professional weather station that reports millibar/hectopascal trends. The 8-SMD module is media-resistant and tolerates the indoor humidity of a weather station enclosure. Its analog output can be sampled at any rate up to the ADC's capability without the FIFO constraints of digital sensors, enabling fine-grained storm-front pressure tracking.
Recommended
Industrial Pneumatic Pressure Monitoring
For factory pneumatic systems running at 0-100 kPa, the MPXA4115A6T1's 15-115 kPa span centers on the typical compressor outlet range and provides 5 V analog signaling that interfaces directly with industrial PLC analog input cards. The -40 °C to +125 °C operating range handles factory floor temperature swings and panel heat soak. The media-resistant gel port tolerates dry air and nitrogen; for liquid or corrosive media add an external isolation diaphragm.
Recommended
HVAC Differential Pressure Sensing
HVAC duct and filter differential pressure drops typically fall between 0-100 kPa, a range the MPXA4115A6T1 covers as absolute readings referenced to its sealed vacuum cavity. In duct applications, use two MPXA4115A6T1 sensors to compute differential via ADC subtraction, or pair with a purpose-built differential sensor if true bidirectional measurement is required. The ratiometric output simplifies interface to 5 V HVAC control boards and the surface-mount package allows dense PCB layouts in fan-coil units.
Recommended
Medical Respiratory Pressure Monitoring
Low-pressure respiratory equipment (CPAP/BiPAP) operates in the 0-40 kPa range, well within the MPXA4115A6T1's 15-115 kPa envelope. Its ±1.5% accuracy supports breath-pressure trending when sampled at >100 Hz, and the gel-protected port accepts medical air without contamination. Note: this part is not a medical-grade pressure sensor and would require system-level qualification and isolation barriers before clinical use.
Recommended
Recommended Products Summary
Engineering reference data for MPXA4115A6T1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPXAZ4115A6T1 | MPXA4115A6U | MPXA4115AP | MPXA4250AC6U | MPX4100A |
|---|---|---|---|---|---|---|
| Package | 8-SMD Module (Gull Wing) | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same | 8-SMD Module (Gull Wing) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Pressure Type | Absolute | Absolute | Absolute | Absolute | Absolute | Absolute |
| Operating Pressure Range | 15 kPa to 115 kPa | 15 kPa to 115 kPa | 15 kPa to 115 kPa | 15 kPa to 115 kPa | 20 kPa to 250 kPa | 20 kPa to 105 kPa |
| Output Voltage Range | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.2 V to 4.8 V | 0.3 V to 4.9 V | 0.3 V to 4.9 V |
| Supply Voltage | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V | 4.85 V to 5.35 V |
| Accuracy (0-85°C) | ±1.5 % | ±1.5 % | ±1.5 % | ±1.5 % | ±1.5 % | ±1.5 % |
| 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 |
Key Differentiators
- Industry-standard 15-115 kPa MAP range (vs MPXA4250AC6U)
- Higher upper-pressure headroom in a 20-400 kPa sensor (vs MPXHZ6400A)
- Decades of proven automotive field reliability (vs MPL3115A2 (digital competitor))
Design Notes
Place the sensor port over a sealed pressure inlet with an O-ring seal around the port rim; the PCB cutout must not introduce bending stress on the package. Keep high-current traces and switching regulators at least 10 mm from the sensor body to avoid mechanical noise coupling into the MEMS diaphragm. A 100 nF decoupling capacitor placed within 5 mm of the VCC pin is required to reject supply transients.
Use a dedicated ADC reference tied to the same 5 V rail that powers the MPXA4115A6T1 to exploit the ratiometric output: Vout/Vcc ratio is precisely calibrated, so any noise on the 5 V rail appears identically on both Vout and Vref and cancels in the ADC conversion. Without a shared reference, supply-rail noise translates directly into pressure-readout error.
Do not expose the port to liquids or corrosive media - the silicon gel protects against dry gases only. For liquid measurement, add a stainless-steel isolation diaphragm with silicone-oil fill in the inlet path. Avoid forcing high-pressure air directly into the port during wash-down, as the gel can rupture above the maximum overload pressure; consult the datasheet for the exact burst rating.
Compliance Information
Lead-free assumption based on SMD-only package and industry-standard MPX family practice from NXP. RoHS, REACH, AEC-Q100, halogen-free and conflict-minerals statuses were not present in the verified web data and are flagged unknown pending review of the manufacturer datasheet.
