LMIS500BB3S First Sensor Diode (Other) In Stock
The LMIS500BB3S is a board-mount differential pressure sensor from First Sensor with 500 Pa full-scale range and I2C digital interface operating at 3V supply. Available in compact SMD package, in stock with worldwide shipping.
- Manufacturer
- First Sensor
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LMIS500BB3S Datasheet PDF
- Category
- Diode
- Price
- From $24.8625(MOQ 5)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 500 Pa full-scale differential pressure range optimized for low-pressure airflow and HVAC sensing
- I2C digital interface at 3V supply voltage simplifies direct microcontroller integration without additional ADC circuitry
- SMD package enables automated pick-and-place assembly for high-volume production
- High sensitivity design suitable for detecting small pressure differentials in ventilation and medical applications
- Low power consumption supports battery-operated and portable sensing systems
Applications
The LMIS500BB3S is well-suited for HVAC airflow monitoring, building automation, and clean-room ventilation control where precise low-pressure differential measurements up to 500 Pa are needed. Its I2C interface and 3V supply make it easy to integrate into microcontroller-based indoor air quality monitors, spirometers, and wearable respiratory diagnostic devices. The SMD footprint supports compact, cost-effective PCB designs in industrial environmental sensing and medical instrumentation applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the full-scale pressure range of the LMIS500BB3S and which airflow applications does it fit?
The LMIS500BB3S measures differential pressure up to 500 Pa, making it ideal for HVAC duct airflow monitoring, filter differential pressure measurement, and clean-room ventilation systems where low-pressure sensing with high resolution is required across a 3V supply.
How does the I2C interface on the LMIS500BB3S simplify integration into an embedded design running at 3.3V?
The LMIS500BB3S communicates via I2C at a 3V nominal supply, which is directly compatible with 3.3V microcontrollers such as STM32 or Nordic nRF52 series without level shifting, reducing BOM cost by eliminating external ADC or SPI bridge components while delivering 16-bit digital pressure readings.
How does the 500 Pa range of the LMIS500BB3S compare to higher-range sensors like 1 kPa or 10 kPa parts for medical spirometry?
For spirometry and respiratory flow measurement, peak breath pressures rarely exceed 200–300 Pa, so the LMIS500BB3S 500 Pa range provides comfortable headroom without the resolution loss that occurs when using 1 kPa or 10 kPa sensors on the same 16-bit output word.
What PCB footprint and package dimensions should I use when designing in the LMIS500BB3S SMD variant?
The LMIS500BB3S is supplied in an SMD package compatible with standard automated reflow soldering; the 3-pin SMD footprint occupies a compact board area, and pressure ports face upward to accept tubing or direct duct connection, with 0.5 mm or similar pitch pads depending on the BB3S package outline.
When should a designer choose the LMIS500BB3S over an analog output pressure sensor in a low-power IoT node?
The LMIS500BB3S digital I2C output eliminates the need for a separate ADC, reducing current draw by removing an active analog front-end stage; for IoT nodes sampling at 1 Hz or slower, its low standby power at 3V can extend coin-cell battery life by months compared to always-on analog sensor chains requiring 5V references.
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About First Sensor
First Sensor is a leading electronic component manufacturer. FindMyChip sources First Sensor ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $37.7200 | $188.60 |
| 25+ | $37.7100 | $942.75 |
| 50+ | $29.1000 | $1455.00 |
| 375+ | $25.9900 | $9746.25 |
| 500+ | $25.4700 | $12735.00 |
| 8000+ | $24.8625 | $198900.00 |
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