Overview of PICO Electronics Audio Transformers
PICO Electronics specializes in surface mount audio transformers, offering a range of models with specifications suited for various applications. These audio transformers are designed to function optimally within a frequency response of +3dB from 400Hz to 250KHz at 1.0 Milliwatt, and can handle power levels up to 100 milliwatts at 1KHz.
Key Features and Specifications
Highlighted features of PICO’s audio transformers include:
- Robust Design: The units are engineered to endure extreme temperatures of up to 220°C, making them suitable for vapor phase and other reflow soldering processes, without compromising electrical or mechanical characteristics.
- Military Specifications: All units adhere to MIL-PRF-27, Grade 5, Class S standards, ensuring reliability and performance in demanding conditions.
- Maximum Distortion: The transformers maintain a maximum distortion of 5% at rated power levels, validated at both 1KHz and 400 Hz frequencies.
- Insulation: They boast an insulation resistance of over 10,000 Megohms at 300 V DC and have been tested for dielectric strength at 200 V RMS.
- Thermal and Mechanical Resilience: The components can withstand 25 thermal shock cycles from -55°C to +130°C as per MIL-STD-202 Test Condition B, indicating superior durability.
- Moisture Sensitivity: With a Moisture Sensitivity Level (MSL) of 3, these transformers are suitable for environments where humidity control is managed.
Product Variants and Part Numbers
The transformers are available with primary impedance ranging from 2 Ohms to 30K Ohms, accommodating a variety of secondary impedances and split winding configurations. PICO provides both SERIES and PARALLEL connection options to meet specific circuit design requirements. The parts come in different models identified with unique PICO Part Numbers for easy reference, and their physical configurations are designed to facilitate easy integration into surface mount technology (SMT).
Pricing and Ordering Information
The datasheet provides detailed pricing for quantities ranging from 1-9 units, and the individual component specifications such as power ratings, DC current handling, resistance levels, and turns ratio are outlined for each part number in both the SERIES and PARALLEL configurations. The document contains Gull Wing PICO Part Numbers as well as leaded versions for flexibility in board layouts and soldering methods.
Accessibility
For an in-depth view, larger size drawings are accessible, and these offer precise dimensions and bottom view diagrams, aiding engineers and technicians in selecting the best-suited transformer for their application.
References:
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