HSPPAR003D - 50-110 kPa Absolute Pressure Sensor | Alps Alpine
MPN: HSPPAR003D ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.63 | $4.63 |
| 10 | $4.17 | $41.70 |
| 100 | $3.71 | $371.00 |
| 500 | $3.33 | $1,665.00 |
| 1,000 | $2.97 | $2,970.00 |
HSPPAR003D Overview
An absolute pressure sensor is a transducer that measures pressure relative to a perfect vacuum (zero reference), unlike gauge sensors that measure relative to ambient atmospheric pressure. In the broader sensor hierarchy, the HSPPAR003D belongs to the MEMS (micro-electro-mechanical systems) pressure-sensor family, which sits inside the pressure sensors / transducers category and ultimately under measurement sensors. Absolute-pressure sensors are preferred when the design must resolve altitude change, sealed-cavity pressure, or weather-related barometric variation independent of local atmospheric drift.
Key features of the HSPPAR003D include ±1% FS accuracy, a wide 50-110 kPa pressure range that fully covers the barometric 100 kPa nominal point, surface-mount construction for reflow-compatible assembly, and an analog ratiometric output that scales with the supply voltage for direct ADC interfacing. The 4-lead no-lead SMD package simplifies PCB layout while keeping the part compatible with automated pick-and-place lines.
The sensor uses a piezoresistive MEMS die coupled with a signal-conditioning ASIC that performs offset, span, and temperature compensation. Internal calibration data stored on-die allows the part to deliver a factory-trimmed analog transfer function, removing the need for external compensation components on the application board.
Typical applications include portable weather stations, altimeters for wearable and handheld devices, HVAC system pressure monitoring, IoT environmental nodes, and indoor air-quality instruments. The 50-110 kPa window is well aligned with the barometric pressure band (approximately 87-108 kPa at sea level to alpine elevations).
Design tip: route the supply and output traces as a differential pair when the sensor sits more than 25 mm from the ADC; long single-ended traces pick up switcher noise that directly modulates the analog output. Add a 100 nF decoupling capacitor within 5 mm of the supply pin.
This page synthesizes distributor pricing, drop-in alternatives, and practical board-level design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for HSPPAR003D — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
HSPPAR003A
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR003B
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR003E
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR003F
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR001D
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR002D
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
HSPPAR003D Maximum Ratings & Electrical Characteristics
| Manufacturer | Alps Alpine |
| Series | HSPPAR |
| Sensor Type | Absolute Pressure Sensor |
| Measurement Type | Absolute |
| Pressure Range | 7.25 psi to 15.95 psi (50 kPa to 110 kPa) |
| Pressure Range (Water Column) | 5.1 m H2O to 11.23 m H2O |
| Accuracy | ±1% FS |
| Output Type | Analog Voltage (ratiometric) |
| Operating Temperature | -20 °C to +85 °C (-4 °F to +185 °F) |
| Package / Case | 4-SMD, No Lead (2.5 x 2.5 mm) |
| Mounting Type | Surface Mount |
| Port Style | No Port (top/bottom vented via package) |
| Termination | SMD pads |
| RoHS Status | Compliant |
| Application | Atmospheric pressure detection |
HSPPAR003D Pin Configuration
| Pin 1 | VCC — Supply voltage |
| Pin 2 | GND — Ground |
| Pin 3 | VOUT — Analog ratiometric pressure output |
| Pin 4 | NC — Not connected (per datasheet) |
Typical Applications
HSPPAR003D is suitable for 6 applications: Portable Weather Station, Wearable Altimeter, HVAC System Pressure Monitoring, IoT Environmental Sensor Node, Indoor Air Quality Instrument, Drone Altitude Hold.
Portable Weather Station
The HSPPAR003D's 50-110 kPa range covers the full barometric weather band, with 60 kPa of span accommodating everything from sea-level high-pressure systems (~104 kPa) to storm low-pressure cells (~98 kPa). The ±1% FS accuracy is sufficient for consumer-grade forecasting and trend logging. The analog ratiometric output connects directly to a low-cost MCU ADC, eliminating the digital bus overhead required by I2C barometers. At 2.5 x 2.5 mm, the 4-SMD footprint fits handheld weather devices and USB-stick form factors. The -20 °C to +85 °C operating window covers all outdoor-ambient deployment scenarios.
Recommended
Wearable Altimeter
Wrist-worn and clip-on altimeters use the HSPPAR003D's absolute-pressure reference to compute altitude via the international barometric formula. Each 1 kPa change equals ~8.4 m of elevation, so the 60 kPa span resolves altitudes from -500 m below sea level to over 5000 m. The 4-SMD no-lead package fits inside watch modules and ski-mountable trackers without consuming PCB area needed for the display and battery. The analog output avoids digital bus contention with the display driver and IMU, simplifying the I2C/SPI bus arbitration in dense wearable designs.
Recommended
HVAC System Pressure Monitoring
The HSPPAR003D's barometric range and ±1% FS accuracy are well suited to commercial HVAC duct and rooftop-unit monitoring, where ambient pressure drift must be tracked for fan-speed control and building-pressure balancing. The wide -20 °C to +85 °C operating window handles rooftop, basement, and air-handler enclosures. The analog ratiometric output provides noise immunity across long sensor-cable runs when paired with a differential ADC front end. The SMD construction supports automated assembly of high-volume HVAC controller boards.
Recommended
IoT Environmental Sensor Node
Battery-powered IoT nodes benefit from the HSPPAR003D's compact footprint and simple analog interface. With an external 100 nF bypass capacitor and a single ADC channel, the part adds barometric sensing without burdening the MCU's I2C bus or firmware stack. The 4-SMD package fits coin-cell and AA-powered nodes for indoor air-quality, smart-home, and asset-tracking applications. The factory-calibrated ±1% FS accuracy eliminates per-unit calibration in production, reducing test time and BOM.
Recommended
Indoor Air Quality Instrument
Indoor air-quality meters combine barometric pressure with humidity, temperature, and gas sensors to compute ventilation indices. The HSPPAR003D's 50-110 kPa window and ±1% FS accuracy provide reliable indoor barometric baselines that compensate gas-sensor readings for pressure-driven concentration shifts. The 2.5 x 2.5 mm 4-SMD package fits slim wall-mountable IAQ enclosures. The analog ratiometric output simplifies the readout chain in low-cost consumer IAQ devices where a digital barometer would inflate the BOM and firmware footprint.
Recommended
Drone Altitude Hold
Multirotor drones use the HSPPAR003D for barometric altitude-hold loops where centimeter-scale altitude stability is not required but consistent barometric reference is. The 60 kPa span delivers 8.4 m per kPa resolution, ideal for hover-hold and return-to-home functions. The compact 4-SMD package fits the drone flight-stack PCB alongside the IMU and magnetometer. The analog output interfaces directly to the flight-controller ADC, avoiding I2C bus congestion during high-rate sensor polling at 1 kHz.
Recommended
Recommended Products Summary
Engineering reference data for HSPPAR003D — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | HSPPAR003A | HSPPAR003B | HSPPAR003E | HSPPAR003F |
|---|---|---|---|---|---|
| Package | 4-SMD, No Lead (2.5 x 2.5 mm) | 4-SMD, No Lead (2.5 x 2.5 mm) - same | 4-SMD, No Lead (2.5 x 2.5 mm) - same | 4-SMD, No Lead (2.5 x 2.5 mm) - same | 4-SMD, No Lead (2.5 x 2.5 mm) - same |
| Brand | ALPS Alpine | ALPS Alpine - same | ALPS Alpine - same | ALPS Alpine - same | ALPS Alpine - same |
| Output Type | Analog Voltage (ratiometric) | Analog Voltage (ratiometric) | Analog Voltage (ratiometric) | Analog Voltage (ratiometric) | Analog Voltage (ratiometric) |
| Measurement Type | Absolute | Absolute | Absolute | Absolute | Absolute |
| Accuracy | ±1% FS | ±1% FS (expected same family) | ±1% FS (expected same family) | ±1% FS (expected same family) | ±1% FS (expected same family) |
| Operating Temperature | -20 °C to +85 °C | -20 °C to +85 °C (expected same family) | -20 °C to +85 °C (expected same family) | -20 °C to +85 °C (expected same family) | -20 °C to +85 °C (expected same family) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
Key Differentiators
- Compact 2.5 x 2.5 mm 4-SMD footprint (vs BMP280 (Bosch, LGA-8))
- Analog ratiometric output - no digital bus contention (vs MPL3115A2 (NXP, I2C digital))
- 50-110 kPa barometric-optimized span (vs MP3V5004DP (NXP, gauge, 0-3.92 kPa))
Design Notes
Add a 100 nF ceramic decoupling capacitor within 5 mm of the HSPPAR003D supply pin. The analog ratiometric output is referenced to the supply rail; any supply ripple couples directly into the pressure reading. For highest accuracy, derive the sensor supply from a low-noise LDO rather than a switching converter, or place a ferrite bead plus 10 uF bulk cap between the switcher output and the sensor supply pin.
Route the analog output trace as a short, guarded path directly to the ADC input. Keep the trace length under 25 mm and avoid running it parallel to switching converter traces. Place a guard ring tied to analog ground around the output trace to reject switching-noise injection. The sensor's exposed pad (if present) should be soldered to a thermal/ground copper pour for mechanical stability.
Use a differential or pseudo-differential ADC input when the sensor sits more than 25 mm from the MCU. Long single-ended traces act as antennas for nearby switcher harmonics, which directly modulate the analog output. If a single-ended ADC is unavoidable, add an RC low-pass filter (10 kohm + 100 nF) at the ADC input to attenuate high-frequency noise above the barometric signal bandwidth of interest.
Do not assume the HSPPAR003D's analog output is calibrated to an internal voltage reference; the ratiometric output scales with the supply voltage, so the supply must be measured by the ADC's reference channel or a stable external reference. Avoid exposing the package vent to direct water or condensing humidity; conformal coating or a hydrophobic vent membrane is recommended for outdoor enclosures. Confirm MSL rating from Alps Alpine before opening the sealed reel.
Compliance Information
RoHS compliance confirmed via LCSC listing (C470798). REACH, halogen-free, and conflict-minerals declarations should be requested from Alps Alpine formal supply specifications. AEC-Q100 not applicable - this is a consumer/industrial-grade MEMS sensor.
