Ultra Miniature Transformers: F Series Thru Hole and G Series Insulated Leads

Category: Electronics, Pico Electronics Inc, Transformers

Ultra Miniature Transformers Specifications

PICO Electronics provides specifications for their Ultra Miniature Transformers, including F Series Thru Hole and G Series with Insulated Leads. With an emphasis on compactness, these transformers have dimensions of just 0.25 inches in diameter by 0.25 inches in height. Designed to meet stringent military standards, they comply with MIL-PRF-27, Grade 5, Class S requirements, ensuring high-quality performance for critical applications.

Performance and Physical Characteristics

The performance characteristics of these transformers reveal a frequency response range of 400 Hz to 250 kHz at 1.0 Milliwatt, with a noteworthy +3dB variance. To bolster clarity and precision in sound or signal, the maximum distortion stays at or below 5% when operating at rated power levels at both 1 kHz and 400 Hz.

Electrical safety and durability are enhanced, with a dielectric strength tested at 200 V RMS, and the units exhibit a robust insulation resistance greater than 10,000 Megohms at 300 V DC. These features, when coupled with the extremely light weight of 1.1 grams and an operating temperature range spanning from -55ºC to +130ºC, make the transformers ideal for a wide variety of demanding environments.

Construction Details

The transformers come with solid terminals that are 0.012 inches in diameter. The solderability of these terminals conforms to MIL-STD-202 Method 208. Their resilience in face of temperature fluctuations gets guaranteed through the inclusion of a thermal shock rating, which endures 25 cycles following Method 107D, Test Condition A-1 of MIL-STD-202E.

Model Variants and Electrical Specifications

The document outlines specific models for both F Series Thru Hole and G Series with Insulated Leads transformers. Each variant is described with a part number and detailed with electrical specifications such as primary impedance, secondary impedance (with mentions of split windings), power in milliwatts, primary unbalanced DC current in milliamps, primary DC resistance, and secondary DC resistance. The turns ratio of primary to secondary windings is also listed, providing crucial information for electrical matching and circuit integration.

Additionally, pricing information for quantities of 1-9 units is included in the datasheet, indicating the product’s commercial availability and offering insight into budgeting considerations for potential buyers.

Visual aids in the form of enlarged drawings for F Series and G Series variants are provided. Links for surface mount versions of the same transformers are also made available, acknowledging diverse mounting preferences and application requirements.