APPLICATION & INSIGHTS
Derive connector selection from the product stack — real-world teardowns, process analysis and new product releases, updated continuously.
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Wearables · AI/AR glassesFitting battery, main board, optical engine and antenna into a temple often leaves less than 1.5mm of connector width. Here is how a four-row ultra-fine-pitch design routes signal, power and RF in one connector.
Read moreThe earbud charging contact, the antenna spring inside the case and the RF test socket on the line — three small parts that decide contact reliability and first-pass yield of the whole product.
Robot mowers, robot vacuums and automotive LiDAR share continuous vibration, wide temperature range and long service life — BTB selection has to move from "it works" to "it stays tight for ten years".
Every 0.1mm taken off watch thickness has to come out of the stack, so BTB mating height, shield-can height and battery thickness must be calculated together.
PRODUCT LINES
Centred on board-to-board and extending into micro RF, FPC, spring contacts and RF components, with the part-number range continually expanding and custom development available.
Board-to-Board
Full pitch range 0.175 / 0.30 / 0.35 / 0.4 / 0.5 / 0.8mm, 2–4 rows, 6–100PIN.
View product11GHzMicro RF / Switch
RF test sockets and micro coaxial sockets as small as 1.3×1.2mm with frequency up to 11GHz.
View product0.3–1.0mmFPC / FFC
0.3 / 0.5 / 1.0mm pitch with flip-lock, slide, front-insert back-flip and other locking structures.
View productHigh reliabilitySpring & Clip
Antenna feed contact, chassis grounding, earbud charging springs and clips, 0.7–5.2mm mating height.
View productDC–8GHzRF Components
RF adapters, attenuators, loads, circulators and couplers.
View productFEATURED PRODUCTS
Below are representative part numbers for each product line; ask us for the full selection guide with more specifications and cross-references.
Get the full selection guide
P0.175 / MH0.5 / 20 & 64PIN
0.175mm ultra-fine pitch four-row BTB: four rows of terminals provide more channels in a very small footprint, pad-compatible with mainstream brand part numbers, suited to AI / AR glasses and high-end TWS.
Datasheet / 3D
P0.4 / MH1.5–4.0 / 10–100PIN
0.4mm pitch high-density series, cross-referenced to the mainstream 0.4mm series, covering 10 to 100PIN in full for more flexible board spacing.
Datasheet / 3D
MSR 6th Test Socket / 11GHz
Ultra-miniature microwave test connector for RF test and signal switching in phones and wearables, drop-in compatible with mainstream Japanese part numbers at low switching cost.
Datasheet / 3DPROCESS & QUALITY
The difficulty with precision connectors is not a single part but staying consistent after a hundred thousand of them. CPT fixes that with process.
Terminals and plastic are moulded in one shot, terminal position is set by the tool, cumulative tolerance from later insertion disappears, and volume yield stays above 99%.
Mould first, then plate only the terminals: precious metal goes only where it is needed, and high-precision plating tools and machine assembly cost are eliminated.
Tooling design and micron-level stamping are done in-house, controlling terminal forming to 0.003mm class accuracy so that 0.175mm pitch can be produced in volume.
ABOUT CPT
CPT develops and manufactures precision board-to-board connectors, micro RF connectors, FPC connectors and spring contacts, with a full BTB cluster from 0.175mm to 0.8mm covering phones, wearables, industrial and medical applications.
We support custom requirements and work with customers on complete interconnect solutions — stack-up evaluation, tooling development and automated volume production all happen in-house, so every connector delivers stable high-speed connection inside the end product.
0.175mm ultra-fine pitch BTB
Full product-line coverage
Tooling accuracy control
Insertmold volume yield
INDUSTRY SOLUTIONS
Reliability and space constraints differ greatly across industries. We look at the structure first, then recommend part numbers.
A BTB plus spring combination for the narrow temple space, with the 0.175mm option compressing the footprint.
Ultra-low BTB interconnect between charging case and main board, balancing mating life with drop reliability.
A micro RF test socket paired with an antenna spring gives a shorter, more stable antenna path.
High-frequency transmission with vibration-resistant design, for LiDAR, domain controllers and sensor modules.
Contact stability under continuous vibration, with a spring plus BTB combination.
0.5 / 0.8mm mid-pitch BTB and FPC solutions balancing reliability with serviceability.
NEWS CENTER
Company news and industry insights: new product launches, production upgrades and customer adoption.
More news
Two 0.3mm pitch BTB connectors can look identical yet behave completely differently in the customer's product — the difference hides in microns of tooling.
Read moreTo let customers buy samples at any time, our main product series are listed on LCSC with online ordering and fast sampling.
Read moreThe four-row ultra-fine pitch solution passed reliability validation at customer sites and is progressively replacing imported part numbers with stable delivery.
Read moreSERVICE
Main product series are listed on LCSC with online ordering and fast sampling.
100% inspection plus sampling, with traceable dimensions, impedance and mating life.
Datasheets, 2D/3D drawings, cross-reference tables and environmental reports are available.
Structural engineers join the early stack-up evaluation; custom development supported.
Own lines schedule production, so volume lead times are controllable and trackable.
CONTACT
Share board thickness, available height, channel count and operating environment and we will recommend and quote within 24 hours.
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