Fixed Fibre Optic Attenuator, 4dB, Singlemode, Connector

Device Type: Fixed Fibre Optic Attenuator (Singlemode)
Brand/Model: Generic — 4dB Fixed Attenuator (brand varies; e.g., Amphenol, OPTOKON, Hirose)
Video Output: N/A
Data Ports: Connector options include SC/UPC, SC/APC, LC/UPC, LC/APC (Male-to-Female plug style)
Attenuation: 4 dB (Nominal)
Attenuation Tolerance: ±0.5 dB (for 1–4 dB range, per OPTOKON standard/premium)
Operating Wavelength: 1250–1650 nm (broadband) or 1310/1550 nm
Return Loss (Minimum): ≥50 dB (UPC) / ≥60 dB (APC)
Max Optical Power: 250 mW
Fiber Type: Singlemode (9/125 µm)
Operating Temperature: −40°C to +75°C (varies by brand; some list +80°C)
Key Specs: 4dB Fixed Fibre Optic Attenuator, Singlemode, SC/LC Connector Options (UPC/APC), 1310/1550nm, ±0.5dB Tolerance (1-4dB), ≥50dB Return Loss, 250mW Max Power
Usage: Passive Optical Networks (PON), Fibre Distribution Frames, Telecom & Data Centre Links, Preventing Optical Receiver Overload, Signal Balancing in FTTX Systems