Large photosensitive area (5 × 5 mm) photosensor with high reliability The S7478 is a PIN photodiode having a large photosensitive area (5 × 5 mm) and surface mount flat package with leads. Surface mount plastic package: 9 × 9.6 × 1.5t mm Automobile sensor (Vehicle and traffic information system, laser radar, front window frost sensor, rain sensor) Large photosensitive area: 5 × 5 mm Operating temperature range: -25 to +85 °C Storage temperature range: -40 to +100 °C FSO (free space optics) Structure Parameter Photosensitive area Package Window material Specification 5×5 Plastic Silicone resin Absolute maximum ratings Parameter Reverse voltage Operating temperature Storage temperature Reflow soldering conditions Symbol VR max. Topr Tstg Tsol*1 Specification 20 -25 to +85 -40 to +100 Peak temperature 240 °C max., two times (see page 4) Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. *1: JEDEC level 5a Electrical and optical characteristics (Ta=25 °C) Parameter Spectral response range Peak sensitivity wavelength Photosensitivity Short circuit current Dark current Temperature coefficient of ID Cutoff frequency Terminal capacitance

Dark current vs. reverse voltage Dark current Anode Cathode NC NC Cathode NC Terminal capacitance Dimensional outline (unit: mm) (6 ×) 0.4 Terminal capacitance vs. reverse voltage Tolerance unless otherwise noted: ±0.1 Chip position accuracy with respect to the package dimensions marked *: X, Y≤±0.2, θ

Recommended land pattern (unit: mm) 11.2 Standard packing specifications Reel (conforms to JEITA ET-7200) Dimensions 254 mm Electrostatic characteristics Conductive Enbossed tape (unit: mm, material: PS, conductive) Reel feed direction 10.9 ± 0.1 Packing quantity 1000 pcs/reel Packing type Reel and desiccant in moisture-proof packaging (vacuum-sea

Measured example of temperature profile with hot-air reflow oven for product testing 300 °C 240 °C max. ∙ This product supports lead-free soldering. After unpacking, store it in an environment at a temperature of 30 °C or less and a humidity of 60% or less, and perform soldering within 24 hours. ∙ The effect that the product receives during reflow soldering varies depending on the circuit board and reflow oven that are used. Before actual reflow soldering, check for any problems by testing out the reflow soldering methods in advance. Related information Precautions ∙ Disclaimer ∙ Metal, ceramic,...