BPW34 Silicon Photocell DIP-2

BPW34 Silicon Photocell DIP-2 is a high-speed, high-sensitive PIN photodiode designed to detect visible and near-infrared radiation in a variety of electronic sensing applications. This miniature, flat plastic package features a large radiant sensitive area, which allows the device to capture light with exceptional precision and rapid response times. Consequently, the BPW34 excels in high-frequency signal detection and precise light measurement tasks. Utilizing a silicon-based PIN structure, the sensor provides linear output over a wide range of light intensities. Furthermore, its low capacitance makes it ideal for high-speed data communication and remote control links. Therefore, you should choose the BPW34 whenever your design requires a reliable, fast-acting, and cost-effective optical interface.

Key Features:

• High Photosensitivity: The large active area ensures maximum light collection efficiency for both visible and infrared spectrums.
• Fast Response Time: Features a rapid rise and fall time (typically 20 ns), enabling high-speed switching and data reception.
• Wide Spectral Range: Sensitivities span from 400 nm to 1100 nm, however, it reaches peak sensitivity at approximately 900 nm.
• Low Junction Capacitance: Minimal internal capacitance allows the photodiode to operate effectively in high-frequency applications.
• Linearity: Provides a highly linear relationship between incident light intensity and the resulting photocurrent.

Technical Specifications:

• Reverse Voltage (V_R): 60 V maximum
• Radiant Sensitive Area: 7.5 mm²
• Peak Sensitivity Wavelength (λ_p): ≈ 900 nm
• Spectral Bandwidth (λ_0.5): 430 nm to 1100 nm
• Photocurrent (I_ra): ≈ 50 μA (at E_e = 1 mW/cm², λ = 950 nm, V_R = 5 V)
• Dark Current (I_ro): 2 nA typical (≤ 30 nA max)
• Operating Temperature Range: −40°C to +100°C

Mechanical Specifications:

• Package Type: DIP-2 (Dual In-line Package)
• Enclosure Material: Transparent plastic with flat top
• Lead Material: Tinned Copper
• Optical Window: Clear plastic for unfiltered light detection

Dimensions:

• Body Length: ≈ 5.4 mm
• Body Width: ≈ 4.3 mm
• Body Height: ≈ 3.2 mm
• Lead Pitch: 2.54 mm (Standard 0.1 inch)
• Lead Length: ≈ 15.0 mm

Pinout and Wiring:

• Pin 1 (Anode): Identifiable by the shorter lead or specific markings; connect to the positive side of the sensing circuit.
• Pin 2 (Cathode): Identifiable by the longer lead; connect to the negative side or the bias voltage source.
• Wiring Note: To achieve the fastest response, you should operate the BPW34 in reverse-bias mode (photoconductive mode). Conversely, use the photovoltaic mode (zero-bias) for precision measurements with low noise requirements.

Datasheet Reference:

• Download Vishay BPW34 Silicon PIN Photodiode Datasheet

Commonly Used in:

• Infrared Remote Receivers: Capturing data signals from TV, AC, and industrial remote controls.
• Light Barriers: Detecting the presence or absence of an object in automated production lines.
• Optical Power Meters: Measuring intensity in laser systems and environmental light sensors.

Applications:

• Control and Drive Circuits: Acting as a trigger for light-dependent relays and switches.
• Medical Instrumentation: Used in pulse oximeters and other diagnostic tools requiring precise light detection.
• Electronic Shutter Control: Adjusting exposure in cameras and optical sensing equipment.
• Solar Radiometers: Monitoring solar radiation levels for weather stations and energy research.

Equivalent Models:

• BPW34S: The surface-mount (SMD) version of the same high-sensitivity photodiode.
• SFH 203: A functionally similar PIN photodiode from OSRAM that offers comparable spectral sensitivity.
• VBP104S: Another high-speed silicon PIN photodiode that provides a similar active area and response profile.

Package Includes:

• 1 x BPW34 Silicon Photocell DIP-2