Comprehensive Guide to Toko Helical Filter Alternatives and Replacements

Table of Contents

Evolution and Alternatives for Toko Helical Filters
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Toko, a pioneer in the development of Helical Filters, was once synonymous with this technology, especially before 2000. Designed and manufactured in Japan, Toko provided a wide range of fixed frequency standard products that became industry benchmarks. However, due to the labor-intensive nature of helical filter production and shifting market dynamics, Toko discontinued mass production of its 7HT, 7HW, 5HT, and 5HW series after 2005. Since then, the availability of these filters has relied on remaining distributor inventories, with new mass production limited to long-term or contracted customers.

Recognizing the ongoing demand for these components, Temwell leveraged over a decade of experience to introduce the 5G Toko Type Helical Filter series (7HT/7HW/5HT/5HW) as direct, stable replacements. These alternatives are designed for seamless integration, allowing customers to maintain their existing production lines without redesign, while ensuring consistent performance.

In 2010, Temwell expanded its offerings to include customized Toko-type helical filters. This service features a low custom design charge and flexible support for specific filter performance requirements, catering to new and emerging product applications.

Temwell Toko Helical Filters Manufacturer

Temwell is recognized globally for its expertise in designing and manufacturing Helical Bandpass Filters. With over 25 years of experience, Temwell provides solutions for Toko filter replacements, covering the 5H, 7H, 13H, and 19H series. Notably, the 5H and 7H series replacements are designed for pin-to-pin compatibility and equivalent performance.

Standard Replacement Solutions
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Temwell offers a comprehensive catalog of Toko-type Helical Bandpass Filters as direct replacements. Customers can easily cross-reference their required Toko filter parts to find suitable Temwell alternatives.

Toko 5H Series Equivalents
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Temwell K2RB Series for Toko 5HW Standard & 367MN Series (50Ω) Temwell 5HT Series Toko Helical Filters

Temwell K3RFT Series for Toko 5HT (50Ω)

Toko 7H Series Equivalents
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Temwell K2B Series for Toko 7HW Standard & 252MXPR (50Ω) Temwell 7HT Series Toko Helical Filters

Temwell K3BT Series for Toko 7HT (302MXPR & 302MXP/HN/HA Series) (50Ω)

Customized Toko-Type Filter Services
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Temwell also supports custom performance specifications for Toko-type helical filters, based on original Toko specs. This allows for greater flexibility in performance without requiring changes to existing PCB layouts. Key features include:

Fast delivery: 14 workdays
Small minimum order quantity: 10 pieces per item
RoHS / REACH compliance