SMP525G-EK MECHANICAL DATA Dimensions in mm. P.I.N. PHOTODIODE FEATURES 3.8 ± 0.2 WINDOW Ø 5.9 ± 0.1 Ø 9.1 ± 0.2 Ø 8.1 ± 0.1 20 SENSITIVE SURFACE Ø 0.45 LEAD • • • • • • • • • • ASYMMETRIC VIEWING ANGLES EXCELLENT LINEARITY LOW NOISE WIDEST SPECTRAL RESPONSE ENHANCED UV SENSITIVITY LOW LEAKAGE CURRENT LOW CAPACITANCE INTEGRAL OPTICAL FILTER OPTION note 1 TO39 HERMETIC METAL CAN PACKAGE EMI SCREENING MESH AVAILABLE 5.08 ± 0.2 Note 1 Contact Semelab Plc for filter options DESCRIPTION 2 1 TO-39 Package Pin 1 – Anode Pin 2 – Cathode & Case The SMP525G-EK is a Silicon P.I.N. photodiode incorporated in a hermetic metal can package. The package window has greater ultra-violet light transmission, thus extending the useful spectral range of the device. The electrical terminations are via two leads of diameter 0.018" on pitch of 0.2". The cathode of the photodiode is electrically connected to the package. The photodiode active area provides asymmetric viewing angles in two orthogonal directions. The photodiode structure has been optimised for high sensitivity, asymmetric light measurement applications across the infra-red to ultra-violet spectrum. Inclusion of a suitable optical filter into the package can produce a device that responds only to ultra-violet light. The metal can and optional screening mesh ensure a rugged device with a high degree of immunity to radiated electrical interference. ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) Operating temperature range Storage temperature range Temperature coefficient of responsively Temperature coefficient of dark current Reverse breakdown voltage Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. -40°C to +70°C -45°C to +80°C 0.35% per °C x2 per 8°C rise 60V Prelim. 1/98 SMP525G-EK CHARACTERISTICS (Tamb=25°C unless otherwise stated) Characteristic Test Conditions. λ at 900nm Responsively Min. Typ. 0.45 0.55 A/W 2.05 mm2 Active Area Dark Current Breakdown Voltage Capacitance Max. E = 0 Dark 1V Reverse 0.25 4 E = 0 Dark 10V Reverse 4 10 E = 0 Dark 10µA Reverse E = 0 Dark 0V Reverse 45 E = 0 Dark 20V Reverse 6 60 nA 80 V pF 30V Reverse Rise Time ns 50Ω 0.45 900nm NEP Units W/√Hz Spectral Response Relative Responsivity (%) 100 80 60 40 20 0 0 Semelab plc. 200 400 600 Wavelength (nm) Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. 800 1000 1200 Prelim. 1/98 SMP525G-EK Directional Characteristics Directional Characteristics 1 0.9 0.9 Normalised Incident Power 1 Normalised Incident Power 0.8 0.7 0.6 0.5 0.4 0.3 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.2 0.1 0.1 0 0 0 10 20 30 40 50 60 70 80 90 0 10 20 Angle from sensor to illumination 80° 50 80° 1 Angle from sensor to illumination 70° 40 60 70 80 90 Directional characteristics Directional characteristics 1 30 Angle from sensor to illumination Angle from sensor to illumination 70° 60° 60° 0.8 0.8 50° 50° 40° 0.6 40° 0.6 30° 30° 0.4 0.4 20° 20° 0.2 10° 0.2 10° 0 0 0 0.2 0.4 0.6 0.8 1 0 Normalised incident power Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. 0.2 0.4 0.6 0.8 1 Normalised incident power Prelim. 1/98