2

1

3

Ø 9.1 ± 0.2

Ø 8.1 ± 0.1

Ø 5.9 ± 0.1

5.08 ± 0.2

SURFACE

Ø 0.45

LEAD

SMP525G-FK

Prelim. 1/98

MECHANICAL DATA

Dimensions in mm.

P.I.N. PHOTODIODE

DESCRIPTION

The SMP525G-FK 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 centre diameter of 0.2". The

photodiode is electrically isolated from the package, which has a

separate earth lead.

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, isolated

photodiode and optional screening mesh ensure a rugged device

with a high degree of immunity to conducted and radiated

electrical interference.

TO-39 Package

Operating temperature range

Storage temperature range

Temperature coefficient of responsively

Temperature coefficient of dark current

Reverse breakdown voltage

-40°C to +70°C

-45°C to +80°C

0.35% per °C

x2 per 8°C rise

60V

FEATURES

• ASYMMETRIC VIEWING ANGLES

• WIDEST SPECTRAL RESPONSE

• ENHANCED UV SENSITIVITY

• PHOTODIODE ISOLATED FROM PACKAGE

• EXCELLENT LINEARITY

• LOW NOISE

• LOW LEAKAGE CURRENT

• LOW CAPACITANCE

• INTEGRAL OPTICAL FILTER OPTION note 1

• TO39 HERMETIC METAL CAN PACKAGE

• · EMI SCREENING MESH AVAILABLE

Note 1 Contact Semelab Plc for filter options

Pin 1 – Anode

Pin 2 – Cathode

Pin 3 – Case