SMP525G-FM MECHANICAL DATA Dimensions in mm. P.I.N. PHOTODIODE FEATURES Ø 9.1 ± 0.2 Ø 8.1 ± 0.1 3.8 ± 0.2 WINDOW Ø 5.9 ± 0.1 20 SENSITIVE SURFACE Ø 0.45 LEAD 5.08 ± 0.2 • • • • • • • • • • • ASYMMETRIC RECEIVING ANGLES VISIBLE AND UV BLIND PHOTODIODE ISOLATED FROM PACKAGE EXCELLENT LINEARITY LOW NOISE WIDE SPECTRAL RESPONSE LOW LEAKAGE CURRENT LOW CAPACITANCE RG850 INTEGRAL OPTICAL FILTER TO39 HERMETIC METAL CAN PACKAGE EMI SCREENING MESH AVAILABLE 3 2 DESCRIPTION 1 The SMP525G-FM is a Silicon P.I.N. photodiode incorporated in a hermetic metal can package. The electrical terminations are via two leads of diameter 0.018" on a pitch centre diameter of 0.2". The can structure incorporates an optical filter that only transmits infra-red light. The photodiode is electrically isolated from the package, which has a separate earth lead. TO-39 Package Pin 1 – Anode Pin 2 – Cathode Pin 3 – Case 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. The metal can, isolated photodiode and optional screening mesh ensure a rugged device with a high degree of immunity to conducted and 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-FM CHARACTERISTICS (Tamb=25°C unless otherwise stated) Characteristic Test Conditions. λ at 900nm Responsiv ely Min. Typ. 0.45 0.55 A/W 2.05 mm2 Active Area Dark Current Breakdo wn Voltage Capacitance Max. E = 0 Dar k 1V Reverse 0.25 4 E = 0 Dar k 10V Reverse 4 10 E = 0 Dar k 10µA Reverse E = 0 Dar k 0V Reverse 45 E = 0 Dar k 20V Reverse 6 60 nA 80 V pF 30V Reverse Rise Time ns 50Ω NEP Units 0.45 900nm W/√Hz Spectral Response Relative Responsivity (%) 100 80 60 40 20 0 0 200 400 600 800 1000 1200 Wavelength (nm) Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. Prelim. 1/98 SMP525G-FM Directional Characteristics 1 0.9 0.9 0.8 0.8 Normalised Incident Power Normalised Incident Power Directional Characteristics 1 0.7 0.6 0.5 0.4 0.3 0.2 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.1 0 0 0 10 20 30 40 50 60 70 80 90 0 10 Angle from sensor to illumination 80° 40 50 60 70 80 90 Directional characteristics 80° 1 Angle from sensor to illumination 70° 30 Angle from sensor to illumination Directional characteristics 1 20 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