The ROHM RPT-37PB3F is a top-view silicon phototransistor for optical control equipment and sensor receivers. Its 3mm molded-resin package includes a visible-light filter to reduce stray-light effects.

Key specifications • Package: 2-lead, through-hole DIP; body diameter 3.1 ±0.2mm. • Peak sensitivity wavelength: 800nm typical; half-angle: ±36° typical. • Light current: 2mA minimum at VCE=5V and 500lx. • Dark current: 0.5µA maximum at VCE=10V in darkness. • Response time: 10µs typical at VCC=5V, IC=1mA, RL=100Ω. • Electrical/optical test conditions above: Ta=25°C. • Operating temperature: -25°C to +85°C. • Absolute maxima at 25°C: VCEO=32V, IC=30mA and collector dissipation=150mW. These are limits, not recommended operating points.

Selection and ordering Pin 1 is the emitter; pin 2 is the collector. Check the mechanical drawing before assembly. Confirm the available light-current rank (L, M or N) with HONGTE; this inventory listing does not specify a rank. Request pricing, lot confirmation and delivery information before ordering.