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Omron B5W-LD0101-1
- Part Number:
B5W-LD0101-1
- Manufacturer:
- Category:
- RoHs:
Non-RoHS Compliant - Datasheet:
B5W-LD0101-1_Datesheet - Description:
SENSOR DUST AIR QUALITY 5V
- In stock 0
B5W-LD0101-1 – Complete Datasheet Summary
Highly-Sensitive LED-Based Air-Quality Sensor, 0.5 µm Particle Detection, Individual Box Packing
1. Device Overview
- Function: Compact optical particle sensor using forward light-scattering to detect airborne dust and aerosols
- Detection limit: ≥ 0.5 µm diameter particles (polystyrene latex reference)
- Output: dual TTL pulse channels (OUT1 ≈ 0.5 µm+, OUT2 ≈ 2.5 µm+) with internal 3 kΩ pull-up
- Packing suffix “-1”: individual single-unit box (vs. -2 = tray)
2. Absolute Maximum Ratings (Ta = 25 °C)
| Parameter | Symbol | Rating | Unit |
|---|---|---|---|
| Supply voltage | VCC | 5.5 | V |
| Input threshold pin | Vth | 5.5 | V |
| Operating temperature | Topr | 0 … +45 | °C |
| Storage temperature | Tstg | –25 … +65 | °C |
3. Electrical Characteristics (VCC = 5 V, Ta = 25 °C, 0 lx)
| Parameter | Min | Typ | Max | Unit | Note |
|---|---|---|---|---|---|
| Supply voltage | 4.5 | 5.0 | 5.5 | V | ripple ≤ 30 mV, fnoise > 300 Hz |
| Threshold voltage | 0 | – | 3.5 | V | externally applied to Vth pin |
| High-level output (OUT1/2) | 4.5 | 5.0 | – | V | pulse appears when particle detected |
| Low-level output | – | 0 | 0.7 | V | quiescent state |
| Supply current | – | – | 90 | mA | LED-ON during sampling |
4. Detection Performance (calibrated with TSI DustTrak II 8530, 1.0 µm impactor, 100 µg/m³, 20 s, Vth = 0.5 V)
| Channel | Particle Size | Typical Counts |
|---|---|---|
| OUT1 | ≥ 0.5 µm | 300 counts (reference) |
| OUT2 | ≥ 2.5 µm | 0 … 150 counts (reference) |
| Count ratio changes with dust size distribution; sensor delivers raw pulse count – external MCU converts to µg/m³. |
5. Pulse & Timing Parameters
- Pulse width: ≥ 0.5 ms (one particle = one positive TTL pulse)
- Minimum sampling frequency: 4 kHz to guarantee capture
- Start-up time: 60 s to stable baseline (internal heater & optics stabilize)
- Built-in pull-up: 3 kΩ to VCC on both OUT1/OUT2
6. Optical & Flow Design
- Light source: high-intensity LED (850 nm) – Class 1 eye-safe
- Scattering angle: forward 30° – maximizes SNR for fine particles
- Unique airway: vertical “suction-in / exhaust-up” flow path; minimizes dust settlement on lens
- Lens material: PMMA; window cleaning port provided (use dry cotton swab only)
7. Connector & Pin-out (JST 5-pin, 2.54 mm pitch, AMP 292164-5)
| Pin | Name | Function |
|---|---|---|
| 1 | VCC | +5 V supply |
| 2 | OUT1 | Pulse output (≥ 0.5 µm channel) |
| 3 | GND | Ground |
| 4 | Vth | Threshold / sensitivity adjust (0 … 3.5 V) |
| 5 | OUT2 | Pulse output (≥ 2.5 µm channel) Recommended mating connector: AMP 173977 (crimp) or equivalent 2.54 mm socket. |
8. Mechanical & Installation Data
| Parameter | Value |
|---|---|
| Overall size | 52.3 × 39.3 × 17.6 mm |
| Weight | 20 g |
| Case material | PC (flame-retardant) |
| Mounting | two M3 holes on 37 mm centres, 0.54 N·m max torque |
| Orientation | vertical ±3°; suction inlet DOWN, exhaust UP |
| Clearance | keep 10 mm free in front of inlet & exhaust ports (see drawing) |
9. Safety & Handling Precautions
- Supply: never exceed 5.5 V; reverse polarity will destroy unit
- Environment: not water-proof; avoid oil mist or condensing humidity
- Cleaning: do not use organic solvents on PMMA lens
- ESD: sensitive I/O – handle with wrist strap; do not hot-plug connector
- Shock: do not drop; optical bench can mis-align
- Waste: treat as industrial electronic waste
10. Typical Application Circuit
+5 V +5 V
| |
100 nF 3 kΩ internal
| |
VCC ─┬──────── OUT1/2
| |
GND ─┴─── MCU GPIO (4 kHz edge interrupt)
Vth ─── 10 kΩ pot or DAC (0.5 V for stock sensitivity)
11. Packing State
B5W-LD0101-1
- Quantity: 1 piece per small ESD box
- Label: contains RoHS logo, date-code, serial/lot
- B5W-LD0101-2 = identical sensor supplied in 30-unit tray – choose suffix per production need.
12. Performance Graphs (reference)
- Count vs. dust concentration: linear slope 300 counts ≈ 100 µg/m³ (smoke)
- Lower detection limit: ≈ 10 µg/m³ (0.5 µm particles)
- Upper limit: > 600 µg/m³ before saturation
- Use above figures as starting point – calibrate against reference instrument in final enclosure.
- All specifications extracted from OMRON B5W-LD0101-1/2 datasheet Rev. 1.2 – subject to change with written confirmation.
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