The Murata SMD TYPE IRS-D200ST00R1 is a tiny reflowable PIR sensor that delivers a leap forward in presence detection for connected devices.. With a size of 6 x 6 mm and a thickness of only 2,6 mm, this component is designed to be integrated directly into the board using SMD processes, making manufacturing cheaper and reducing space in products such as IP cameras, smart doorbells, thermostats, or connected lighting.
Beyond the typical analog PIR, this model incorporates an I2C interface and an interrupt line to talk to a microcontroller., so that enables wake-up and person detection functions with ultra-low power consumption. It also integrates internal blocks such as preamplifier, ADC and digital filtering, in addition to configurable trigger conditions (threshold, count, time window), which simplifies design and improves noise immunity.
What is the Murata SMD TYPE IRS-D200ST00R1 and why it stands out
It is a passive infrared pyroelectric (PIR) sensor in SMD encapsulation capable of detecting variations in IR radiation associated with human movement.. Its value proposition lies in its reflowable format, its small size and its on-board electronics., that pave the way for compact and reliable integrations into battery-powered IoT devices.
This sensor uses two pyroelectric electrodes of approximately 2,0 x 0,5 mm each., configured to capture differential changes in infrared energy. Differential design helps cancel out unwanted environmental interference and thermal vibrations, improving the signal-to-noise ratio and facilitating stable detections.
By exposing an I2C digital interface and interrupt line, the IRS-D200ST00R1 avoids complex analog stages y allows the microcontroller to receive motion events processed with threshold logic and counts. This reduces CPU load, minimizes power consumption and simplifies firmware.
Murata positions this component as an ideal option for systems requiring low energy and high integrability., including devices that need to wake up from a deep sleep mode only when there is actual presence, radically extending battery life. That practical orientation It is evident in its small footprint, its pinout and the internal functions for robustness.
Key technical specifications
The IRS-D200ST00R1 condenses into a few millimeters functions that usually require several external blocks.These are its most relevant features according to the available information:
- Dimensions: 6,0 x 6,0 x 2,6 mm (ultra-compact in height for dense mountings).
- Electrodes: two pyroelectric elements of ~2,0 x 0,5 mm.
- Interface: I2C bus for configuration/reading and interrupt pin for detection notifications.
- Food: 1,8V to 3,3V, ideal for low-power MCUs.
- Typical consumption: about 8 μA (reference to 3,3 V), extremely low for battery-operated equipment.
- Field of view (FoV): approx. 55° on X axis and 42° on Y axis, without external lens.
- Scope: depends on the lens; for outdoor cameras it is usually around 10–15 m with suitable optics.
- Soldering pads: : 8 total pads (I2C, interrupt, 2 test pins, VDD, VSS, etc.).
- Typical response: 19,5 mV (typ.) under reference conditions.
- Robustness against noise: High signal-to-noise ratio and strong resistance to interference.
- Thermal range: Operation from -25°C to 85°C; Storage from -40°C to 85°C.
- SMD reflow encapsulation: suitable for standard reflow ovens, which reduces the cost of the assembly line.
This set of parameters reflects a balance between miniaturization, low power consumption and ease of use., with a moderate FoV that can be adjusted by choosing the lens for each application.
Digital interface and on-board processing
One of the great advantages of the IRS-D200ST00R1 is that it integrates blocks such as a preamplifier, ADC converter and digital filters.. Thanks to that, the sensor does not deliver just a raw signal; instead, it allows Define detection conditions such as the trigger threshold, the number of counts required, or the window time during which the condition must be maintained to consider an event valid..
The presence of an interrupt line facilitates ultra-low power mode in the microcontroller., which can sleep and wake up only when the sensor issues a positive detection IRQ. This reduces CPU load, minimizes power consumption and simplifies firmware.
The I2C bus simplifies wiring and compatibility with a wide range of MCUs, from small Cortex-M to SoCs with Linux, as well as allow fine adjustments without touching hardware. In noisy environments, Internal digital filtering and software configuration help reduce false alarms without losing sensitivity.
Field of view, lens and detection distance
The native field of view is about 55° horizontally and 42° vertically, but the actual range depends on the lens.. As with other PIR sensors, It is essential to select a Fresnel optic that adapts the coverage to the scene and the distance-objective of the final product..
For outdoor applications, with a suitable lens, you usually work in the range of 10 to 15 meters., sufficient for most IP cameras, doorbells with street views, or perimeter detection lights. If the use case requires indoor use or close proximity, you can opt for lenses with a larger aperture and shorter range.
Murata warns that certain proprietary IML/PPGI lenses are not compatible with this model., so it's a good idea to check the list of recommended/compatible optics to meet the detection zone pattern and expected signal strength. Industry sources mention support for lens selection, including video demonstrations, which guide the integrator during the setup.
Ultra-low power and consumption
The 1,8 to 3,3 V power supply range covers both single-cell Li-ion designs and 1,8 V regulator solutions., plus allow rail sharing with the MCU and reduce the number of regulators.
Typical consumption around 8 μA (referenced to 3,3 V) is a critical point to extend battery life.. If the system relies on sensor interruption to wake up the logic, the average energy throughout the day plummets., making it possible to power it with button cells or small capacity lithium packs.
By combining digital filtering, configurable thresholds and counting, the sensor helps avoid unnecessary wake-up cycles.. Fewer false positives translate into fewer interruptions for the CPU and therefore less total system consumption.
Hardware integration: pads, testing and SMD mounting
The 8-pad pinout includes the fundamental signals: power (VDD), ground reference (VSS), I2C bus lines (SCL/SDA), interrupt pin and two test pads.. This provision It is familiar to anyone who integrates digital sensors and speeds up routing on dense boards.. It also allows us to consult details such as in compatibility with other sensors.
Reflowable SMD packaging is key to large-scale manufacturing. Compared to PIRs in through-hole encapsulations with bulky lenses and supports, The IRS-D200ST00R1 is placed with pick-and-place and goes through the oven like any other component., reducing time, costs and process variability.
The dimensions of 6 x 6 mm with 2,6 mm height allow it to be placed in slim housings, such as intercoms, wall thermostats or compact cameras, where internal volume optimization is critical to the product experience.
Robustness against noise and environmental conditions
The design boasts high signal-to-noise ratio and good resistance to interference., essential in scenarios with switched loads, nearby Wi-Fi, or high-frequency oscillators. The internal signal path and digital filtering help maintain detection stability under real-world conditions..
In terms of temperature, the sensor operates between -25°C and 85°C and supports storage between -40°C and 85°C.These ranges cover everything from demanding interiors to enclosures that heat up under moderate sunlight exposure, provided the mechanical and thermal design is suitable.
Availability, prices and channels
In distribution, reference prices of USD 2,13 per unit in reels of 2.000 pieces have been published., with a sample price of around $3,66 from distributors such as Mouser. These figures are indicative and may vary depending on volume, region, and trading conditions.
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Documentation notes and general considerations
In Murata's technical materials it is common to find scope notes and notices about the nature of the data.. For example, it is mentioned that typical data can be classified by temperature characteristics, nominal voltage and chip size (for SMD) within the same series, and part numbers with maximum capacitance are listed for reference.
Although this mention of capacitance is a generic catalog note that does not apply directly to a PIR, serves as a reminder that part numbers must be confirmed in the official PDF and that, in general, demanding reliability conditions are more difficult to meet as a certain magnitude grows (In that example, the capacitance) within a family of components.
The practical recommendation is to always check the updated datasheet for the exact part number., including tolerances, thermal curves, and final electrical parameters. This avoids surprises in validation, purchasing, or manufacturing.
Applications and usage scenarios
The IRS-D200ST00R1 is especially useful in products that need to detect human presence with minimal consumption.. On IP cameras and doorbells, you can activate the viewing or recording system only when there is activity. On smart lighting, trigger scenes or adjust power to save energy.
In thermostats and air conditioning, occupancy detection improves comfort and reduces energy consumption., for example, lowering the heating when a room is empty and raising it when motion is detected. In portable devices or security sensors, Its compact format helps to hide it without penalizing the design.
Exposing I2C and an interrupt makes it easy to integrate with common IoT MCUs., such as the STM32, ESP32, nRF or RP2040 families, and with SoCs running Linux for compact gateways or NVRs. Threshold and time window logic help reduce false alarms caused by pets, electrical noise, or mild thermal changes..
When seeking maximum autonomy, the operating pattern is clear: the system sleeps and only wakes up with the IRQ of the sensor. From there, Additional readings are taken or a subsystem (camera, radio, codec) is activated to process the actual event, keeping the average consumption at very low levels during the product's useful life..