What Temwell does

Temwell Corporation (Taiwan) is a privately held RF and microwave filter manufacturer founded in 1974, with the TEMWELL brand operating since 1994. The company designs and manufactures a broad portfolio of RF filtering solutions spanning DC to 60 GHz, including helical bandpass filters built on quarter-wave (λ/4) technology, cavity filters, SMD ceramic and DR filters, SAW filters, and complementary signal-management components — duplexers, diplexers, triplexers, quadplexers, multiplexers, splitters/combiners, power amplifiers, LNAs, isolators, couplers, circulators, and attenuators. The published catalog comprises more than 5,000 specification sheets, 800+ standard catalog products, and 3,000+ helical bandpass filter variants, available in 50 ohm and 75 ohm configurations with power handling up to 200W and isolation up to 60 dB+.

The company serves a vertical mix that includes 5G communications, aerospace, military and defense, satellite communications, drone and autonomous vehicle systems, broadcasting (CATV), industrial IoT/AIoT, and public safety/trunking radio. Custom filter design services are offered with a stated 7-10 day proposal turnaround. The company holds ISO 9001:2015 (renewed annually through 2022), RoHS, REACH, and D-U-N-S registrations, and provides drop-in pin-compatible replacements for discontinued Toko helical filter series and obsolete Sumida/Murata coil and inductor parts under the Temstron sub-brand.

Revenue is generated through three streams: standard catalog and custom hardware sales, custom design engineering services, and a SHOPLINE e-commerce storefront launched in 2017 with 24-hour online payment. Pricing is quote-based and not publicly disclosed. The company distributes directly through its Taipei headquarters and a New York office (opened 2010), supplemented by global distribution partners in over 20 countries, B2B platforms (Taiwantrade since 2017, Globalspec since 2019), and regular participation in European Microwave Week (EuMW, most recently Paris 2024).

Name

Temwell

Legal name

Temwell Corporation (Taiwan)

Website

https://temwell.com

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

101–250 employees

Short description

Temwell Corporation is a Taiwan-based privately held RF and microwave filter manufacturer, designing and selling helical, cavity, SMD ceramic, and SAW filters for 5G, aerospace, defense, satellite, and IoT applications across 20+ countries.

Ownership category

akta.pro rank

Product category

RF and Microwave Filter Components

NAICS

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (334220), Other Communications Equipment Manufacturing (33429)

SIC

Radio & Tv Broadcasting & Communications Equipment (3663), Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

RF MEMS & Resonators (SAW/BAW/Filters/Timing) (HDAHALAI)

akta.pro secondary industries

RF Filters & Duplexers (SAW/BAW/FBAR) (HDAHAMAG), Passive Filters & RF Passives (LC Filters/Diplexers/Baluns/Attenuators) (HDAHANAG)

Keywords

• RF filter manufacturing
• Microwave filter design
• 5G RF components
• Helical bandpass filters
• Cavity filter solutions

Headquarters

HQ city

Causeway Bay

HQ country

Hong Kong SAR China

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. RF and Microwave Filter Sales: Temwell generates revenue through the sale of standard and custom RF filters, microwave components, and related assemblies. The company operates an online store (SHOPLINE) with 24-hour online payment, and also processes orders via direct inquiry and sales contact. Revenue is derived from both standard catalog products and custom-designed solutions.
2. Custom Design and Engineering Services: Custom filter design and engineering services with typical 7–10 day proposal turnaround. Services cover frequency tuning, bandwidth adjustment, insertion loss, attenuation, VSWR, ripple, group delay, power handling, dimensions, connector types, and multiplexer integration. New product proposal in 7 workdays.
3. Online Store (SHOPLINE): Temwell operates a dedicated e-commerce storefront on SHOPLINE offering standard filter products with 24-hour online payment. The store provides quick delivery options and economic pricing for prototype and testing purposes.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Temwell designs and manufactures RF and microwave filters and related components for wireless communications, including 5G cavity filters, SMD ceramic, SAW, and helical bandpass filters, plus diplexers, duplexers, multiplexers, RF amplifiers, and supporting components. The company offers both a large catalog of standard products (with 800+ items available for quick 72-hour delivery) and custom-engineered filter solutions with typical 7–10 day proposal turnaround for frequencies from DC to 60 GHz.

Product overview

Temwell Group offers a comprehensive portfolio of RF and microwave filter solutions for wireless communications. The product lineup centers on 5G RF Filters including Cavity Filters (Bandpass, Lowpass, Highpass, Bandstop, High Power, Ultra-Wideband), SMD Ceramic Filters, SAW Filters, and Helical Bandpass Filters. These core filter products are complemented by signal management components including Diplexers & Duplexers, RF Splitters/Combiners, and Multi-band RF Multiplexers. The group also provides RF Amplifiers (Power, Low Noise, High Power), and supporting RF components such as Isolators, Couplers, Circulators, and Attenuators. Additionally, Temwell offers Alternative Toko Filters as drop-in replacements for discontinued Toko series, and Alternative Coils & Inductors for obsolete component replacement. Products span frequencies from DC to 60GHz with power handling from 5W to 200W, available in 50 ohm and 75 ohm configurations.

Differentiator

Problem solved

Functional benefit

Brands

• Temstron: Extended service brand providing RF solutions source to fulfill effective and efficient global competence, offering 5G RF and microwave components including RF duplexers/diplexers, multiplexers, combiners, splitters, power dividers, attenuators, circulators, couplers, power amplifiers/LNAs, and obsolete coil and inductor solutions

Products and services

• 5G Cavity Filter RF cavity filters including Bandpass, Lowpass, Highpass, Bandstop, High Power, Ultra-Wideband, Low Band, and Waveguide configurations for 5G and RF applications ranging from DC to 60 GHz. Designed for telecommunications, aerospace, military, and satellite communications system integrators.
• 5G RF SMD Filter Surface-mount ceramic and DR (dielectric resonator) filters including SMD Ceramic Bandpass Filters and SMD Duplexers for compact 5G, IoT, and UAV applications. Designed for engineers needing compact, surface-mountable RF filtering solutions.
• 5G SAW Filter Surface Acoustic Wave filters including SAW Bandpass Filters, WiFi SAW Filters, and SAW Duplexers (1.6x1.2mm, 1.8x1.4mm, and other sizes) for 5G, WiFi, and wireless communication applications. Designed for compact wireless module designers.
• 5G Helical Bandpass Filter Helical bandpass filters available in 7H, 7S, 5W, and 5R series with center frequencies from 42–2600 MHz, bandwidths from 5–200 MHz, available in both 50 ohm and 75 ohm configurations. Core product using proprietary quarter-wave (λ/4) technology for wireless communications.
• 5G Diplexer & Duplexer RF diplexers and duplexers for VHF UHF applications supporting frequency range DC to 60 GHz with power handling up to 200W, available in connector, surface mount, and thru-hole packages. Isolation up to 60 dB+. Designed for two-way radio, public safety, and 5G infrastructure.
• 5G RF Splitter/Combiner RF combiners and splitters supporting 2, 3, 4, and 5 band configurations for signal distribution and combining in 5G, broadcasting, and communication systems. Designed for infrastructure and system integrators.
• Multi-band 5G RF Multiplexer RF multiplexers including Triplexers (1x3) and Quadplexers (1x4) for multi-band operation with isolation up to 50 dB+ and power handling from 5–200W. Configurations in 1×2, 1×3, 1×4, 1×8, 1×16. For multi-band wireless systems.
• RF 5G Amplifiers RF amplifiers including Power Amplifiers, Low Noise Amplifiers (LNA), and High Power Amplifiers with frequency range 0.1 MHz to 12 GHz. For 5G, satellite, and communication systems.
• RF Isolator Two-port RF isolators allowing microwave signals to pass in one direction only, protecting sensitive equipment from excessive signal energy. For RF system integrators and equipment manufacturers.
• RF Coupler Directional couplers for combining or separating microwave signals in communication systems, enabling signal routing and complex RF applications. For RF engineers and system integrators.
• RF Circulator Three or four-port passive RF components that allow signals to flow in specific non-reciprocal directions, preventing inter-port interference. For RF system designers.
• RF Attenuator Passive devices designed to reduce signal power without distorting the signal waveform, typically used with amplifiers for signal level management. For RF system integrators.
• Alternative Toko Filter Drop-in replacement filters for discontinued Toko helical filter series including K2-7HW, K2R-5HW, K3-7HT, K3R-5HT, and K4-4pole series with pin-to-pin compatibility. Covers K2, K3, K4, TT, TF series with RoHS/REACH compliance. For engineers needing replacement of obsolete Toko components.
• Alternative Coil & Inductor Replacement coils and inductors in DIP, SMD, and mold types including Sumida and Murata alternatives for obsolete component replacement. For engineers maintaining legacy systems.
• 5G Module Power Filter Power filters designed for 5G module applications with various connector types including SMA and N-type connectors. For 5G module integrators and equipment manufacturers.
• Temwell Online Filter Shop (SHOPLINE Store) Online e-commerce storefront offering standard RF filter products with 24-hour online payment, quick delivery options, and economic pricing for prototype and testing purposes. For engineers, hobbyists, and small buyers.
• Custom RF Filter Design and Engineering Service Custom filter design and engineering services with typical 7–10 day proposal turnaround. Services cover frequency tuning, bandwidth adjustment, insertion loss, attenuation, VSWR, ripple, group delay, power handling, dimensions, connector types, and multiplexer integration. For system integrators and OEMs needing application-specific RF filtering solutions.

Quantifiable outcome

• 7–10 day custom design proposal turnaround
• +5 more outcomes

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered minor and core.

• Globalspec (IEEE)minorChannel Partner/ Reseller/ Distributor · 1 August 2019Temwell became an IEEE Globalspec online member in August 2019, expanding its professional network reach in the electronics components space.
• TÜV RheinlandminorStrategic or Co-development Partner · 1 September 2017Temwell Group successfully passed TÜV Rheinland Germany's global business information verification in September 2017, demonstrating compliance and credibility to international customers.
• TaiwantrademinorChannel Partner/ Reseller/ Distributor · 1 June 2017Temwell joined Taiwantrade, the world's 4th largest B2B platform, in June 2017 as part of international market expansion and lead generation.
• SHOPLINEcoreTechnology or Integration · 1 January 2017Temwell launched its online filter store on SHOPLINE in 2017, enabling 24-hour online payment processing and direct e-commerce sales to global customers.

Scale indicators5 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Raltron Electronics: US-based manufacturer of frequency control and RF filter products (SAW, ceramic, cavity) for telecom, military and industrial markets. Closely comparable mid-sized filter specialist competing for similar custom and replacement filter business.
• Mini-Circuits: Broad-line catalog and custom RF/microwave component supplier (filters, couplers, splitters, amplifiers) serving defense, instrumentation and telecom. Highly comparable to Temwell's catalog-plus-custom business model and target customer base.
• Broadcom (AVAGO): Dominant supplier of FBAR/BAW filters for mobile and Wi-Fi via the former Avago business. Sets the performance benchmark Temwell's SAW and ceramic filter products must compete against in high-volume wireless designs.
• Qorvo: US-based RF semiconductor and filter specialist serving 5G base stations, defense and Wi-Fi markets. Competes with Temwell in defense/aerospace and infrastructure filter sockets, particularly in BAW and high-power cavity filter categories.
• Skyworks Solutions: Leading supplier of RF filters (including TC-SAW and BAW) for mobile, IoT and infrastructure. Overlaps with Temwell's SAW and duplexer offerings and represents the kind of integrated RF player that captures premium 5G sockets.
• Johanson Technology: US-based supplier of high-frequency ceramic chip capacitors, SMD filters and inductors for RF/microwave. Competes with Temwell's SMD ceramic and DR filter lines in similar Wi-Fi, IoT and broadband customer applications.
• TAI-SAW Technology (TST): Taiwan-based specialist manufacturer of SAW filters and RF components for wireless, Wi-Fi, GPS and 5G. Most geographically and technologically comparable peer to Temwell in the SAW filter and Taiwan RF ecosystem.
• TDK (EPCOS): Through EPCOS, TDK is a major supplier of RF filters, duplexers and SAW components for telecom, automotive and industrial. Competes head-on with Temwell in cavity and SMD filter categories serving 5G infrastructure and industrial customers.
• Murata Manufacturing: World's largest manufacturer of ceramic and SAW/BAW RF filters for mobile, infrastructure and IoT. Closest direct competitor to Temwell across helical, SMD ceramic, SAW and module filter technologies, with vastly greater scale.

Regional players

• Walsin Technology: Taiwan-headquartered manufacturer of multilayer ceramic capacitors, chip resistors, RF components and filters. Competes regionally with Temwell in passive/RF components for Taiwan and Asia-based customers, though with broader passives focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/temwell

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Temwell