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OIT25C

Product catalog summary

General Description
The OIT25C is a six single diced silicon phototransistor array with a common collector on the back substrate. Each emitter is accessible via specific pads. The optical pitch is 0.68 mm, and the LCC package electrical pitch is 1.27 mm. Each element's active area is 0.20 x 0.45 mm². The product offers high uniformity, stability, and optical responsivity due to its monolithic construction and antireflective coating. The encapsulant is a clear silicone material, providing robustness against RoHS soldering processes and high optical performance.

Applications
- Optical encoders
- Incremental encoders
- Optical Receivers
- Controls/drives

Features
- High uniformity of silicon cells
- High temperature range
- High transparency resin
- High gain
- Designed to meet industrial specifications
- Reference holes and dots for precise mounting

Pin Functions
1. N.C. - Not connected
2. AE - Phototransistor A Emitter
3. CE - Phototransistor C Emitter
4. EC - Phototransistor E Emitter
5. FE - Phototransistor F Emitter
6. DE - Phototransistor D Emitter
7. BE - Phototransistor B Emitter
8. CC - Common collector

Ordering Information
- OIT25C 13-ch. phototransistor array with 0.68mm optical pitch on plastic SMD package
- OIT25C 6-ch. phototransistor array with 0.68mm optical pitch on plastic SMD package

Absolute Maximum Ratings
- Operating Temperature Range: -40 to 100 °C
- Storage Temperature: -40 to 100 °C
- Lead Temperature (solder) for 3s: 230 °C
- Breakdown Voltage Collector-Emitter: 50 V
- Power Dissipation: 150 mW
- Electrostatic Discharge Susceptibility: Class 3

Electrical Characteristics
- Dark Current: 5 to 100 nA
- Responsivity: 0.5 A/W
- Peak Responsivity: 750 nm
- Spectral Bandwidth: 500 to 950 nm
- Emitter-Collector Current: 0.1 to 100 μA
- Collector-Emitter Current: 0.1 to 100 μA
- Gain: 500 to 2000
- Saturation Voltage: 80 to 200 mV
- On-state Collector Current: 1 mA

AC Switching Characteristics
- Rise Time: 10 μs
- Fall Time: 11 μs

Mechanical Characteristics
- Phototransistor Active Area: 0.09 mm²
- Length of the Active Area: 0.2 mm
- Width of the Active Area: 0.45 mm

Package Characteristics
- Pad Surface Finishing: GOLD
- Pad Shelf Life: 6 months
- Moisture Sensitive Level: Level 3 according to Jedec standard J-STD-020D.1

Typical Performance Curves
- Output voltage vs Temperature
- Normalized spectral responsivity

Catalog excerpts

OIT25C 6-ch. phototransistor array 0.68mm optical pitch on plastic SMD package General Description OIT25C consists in a six single diced silicon phototransistor. The phototransistors have a common collector on the back substrate, which is tied to a single pad and every emitter is accessible to specific pad. The optical pitch of the array is 0.68 mm, the LCC package electrical pitch is 1.27 mm. The active area of each element is 0.20 x 0.45 mm2. The advantages of this product are the high uniformity of the silicon sensors, due to the monolithic construction and to the extremely controlled microelectronic process, the high stability of the signal and the high optical responsivity, due to the antireflective coating deposited on the phototransistor’s areas. The encapsulant is a clear silicone material, having medium hardness, in order to be robust against RoHS soldering processes and high optical performances (transmittance close to 100% in the range 300-900nm). Two reference marks are available for the precise collimator positioning. Applications Optical encoders Incremental encoders Features ■ High uniformity of silicon cells ■ High temperature range ■ High transparency resin ■ High gain ■ Designed to meet industrial specifications ■ Reference holes for precise mounting ■ Reference dots for very precise mounting Pin Functions Optical Receivers Controls/drives Function Not connected Phototransistor A Emitter Phototransistor C Emitter Phototransistor E Emitter Phototransistor F Emitter Phototransistor D Emitter Phototransistor B Emitter Common collector OIT25C 13-ch. phototransistor array 0.68mm optical pitch on plastic SMD package

Open the catalog to page 1

OIT25C PACKAGE CHARACTERISTICS Symbol Moisture Sensitive Level † (see note at bottom page) TYPICAL PERFORMANCE CURVES Figure 1 – Output voltage Vs Temperature Figure 2 – Normalized spectral responsitivity † According to Jedec standard J-STD-020D.1

Open the catalog to page 3

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