Basic Product Information
Part Number: EE-SY199
| Field |
Value |
| Manufacturer |
Omron Electronic Components |
| Device Type |
EE-SY199 |
| Package |
SMD 1206 (3.2 × 1.1 × 1.7 mm) |
| Compliance |
RoHS Compliant |
| Grade |
Industrial (-25°C to +85°C) |
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Sensor Type |
Reflective Photomicrosensor |
– |
| Output Type |
Phototransistor |
– |
| Sensing Distance |
1.0 |
mm |
| Sensing Method |
Reflective |
– |
| LED Wavelength |
950 |
nm (Infrared) |
| Forward Current (IF) |
20 |
mA (typ) |
| Max Forward Current (IF) |
50 |
mA |
| Forward Voltage (VF) |
1.2 |
V (typ) |
| Reverse Voltage (VR) |
6 |
V |
| Collector-Emitter Voltage (VCEO) |
35 |
V (max) |
| Max Collector Current (IC) |
20 |
mA |
| Power Dissipation |
100 |
mW |
| Rise Time |
20 |
µs |
| Fall Time |
20 |
µs |
| Number of Channels |
1 |
– |
| Mounting Style |
SMD/SMT |
– |
| Package Dimensions |
3.2 × 1.1 × 1.7 |
mm |
| Factory Pack Quantity |
2,000 |
(MouseReel) |
| Operating Temperature |
-25 ~ +85 |
°C |
| Termination Type |
PCB (Solder) |
– |
Core Features & Advantages
The EE-SY199 is Omron’s ultra-compact reflective photomicrosensor in a 1206-class SMD package — delivering non-contact object detection in spaces too small for traditional photoelectric sensors, with the reliability pedigree of the world’s largest sensor manufacturer.
- Primary Function: Reflective infrared photomicrosensor with phototransistor output, 1 mm standard sensing distance, 950 nm IR LED emitter, and 20 µs response time in a 3.2 × 1.1 × 1.7 mm SMD package.
- Advantages:
- 1206 Footprint — Smallest Reflective Sensor in Its Class: At 3.2 × 1.1 mm, the EE-SY199 occupies roughly the same PCB area as a standard 1206 passive component. This enables non-contact detection on PCBs where even the smallest DIP-style photointerruptors cannot fit — such as between closely-spaced connectors, under flex cables, or in miniature robotic end-effectors.
- No External Reflector Required — Reflective Mode: Unlike transmissive (slot-type) photointerruptors that require a mechanical flag or shutter, the EE-SY199 detects objects by reflecting its 950 nm IR beam off the target surface. This eliminates moving parts, alignment complexity, and dedicated mechanical flags — the target object itself acts as the reflector. Any surface with reasonable IR reflectivity (paper, plastic, metal, skin) can trigger detection.
- 20 µs Response with 35 V / 20 mA Output Drive: The phototransistor output switches in 20 µs — fast enough for high-speed object counting, rotary encoder emulation, and real-time presence detection on production lines. The 35 V/20 mA collector ratings allow direct interface with 24 V industrial logic, optocoupler LEDs, or MCU GPIO without intermediate buffering in most applications.
Typical Application Scenarios
- Industry: Industrial Automation / Consumer Electronics / Office Equipment / Medical Devices
- Equipment: Printers, ATMs, vending machines, robotic grippers, portable medical instruments, smart home devices
- Use Cases:
- Paper / Media Presence Detection in Printers and ATMs: The 1 mm detection range and 950 nm IR wavelength penetrate semi-transparent media while ignoring ambient visible light. The reflective mode detects paper, card, or envelope edges without requiring a mechanical flag — simplifying paper path design and reducing mechanical failure points in high-duty-cycle machines.
- Miniature Robotic Gripper Object Sensing: In compact robotic end-effectors, the 3.2 × 1.1 mm footprint fits between gripper fingers to detect part presence/absence before and after pick-and-place operations. The phototransistor output directly drives the gripper controller’s digital input, eliminating analog signal conditioning.
- Consumer Device Proximity Wake-Up: The 950 nm IR LED and low 20 mA forward current enable always-on proximity detection in battery-powered devices (smart dispensers, automatic soap dispensers, contactless switches). The phototransistor output triggers an MCU interrupt only when a hand or object enters the 1 mm detection zone, keeping the system in deep sleep otherwise.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$0.05 – $0.25 |
USD |
| Overseas B2B |
$0.30 – $0.80 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| EE-SY171 |
Transmissive (slot-type), 3.4 mm slot width, larger DIP package |
Applications with dedicated mechanical flag/shutter |
| EE-SY413 |
Reflective, longer sensing distance (5 mm), larger package |
Greater detection range at the cost of PCB area |
| TCRT1000 |
Vishay equivalent reflective sensor, similar 950 nm IR, larger footprint |
Second source / alternative sourcing |
| GP2S60 |
Sharp reflective sensor, phototransistor output, comparable size |
Budget-sensitive designs accepting broader tolerance |
