Spring-loaded docking connectors in matched pairs

Avoid the costly development of a bespoke interface. Each Swift-Dock pair is a spring contact side for your dock and a contact land side for your device, ready fitted with 2 to 12 contacts.

Find your pair Request samples

Technical team on 01787 478678, Monday to Thursday

The contact land side, top, goes in the device; the spring contact side goes in the dock.

Pitch: 2.2 to 10 mm
Contacts: 2 to 12
Current: up to 12 A
Docked gap: 1.0 to 1.5 mm
Minimum order: None
Manufactured in: Great Britain

An exploded SWIFT-DOCK-2 pair with PCB and connector: the contact land side at the top left and the spring contact side at the bottom right — Top left, the contact land side for the device; bottom right, the spring contact side for the dock. SWIFT-DOCK-2 with PCB and connector, from Coda’s render. Each side is also sold without a PCB, or with a PCB and no connector.

Springs in the dock, lands in the device, 1.0 to 1.5 mm apart when docked

The figures engineers ask for first, from Coda’s Swift-Dock FAQ.

Sealing: Dustproof and splash-proof. About IP50 as supplied and IP55 with the SD-G gasket; potting the back can approach IP67.
Flammability: UL94 V-2, with V-0 on request
Temperature: Up to 150 °C
RoHS: Compliant
Vibration: Light vibration is fine; test the interface in your own approval process
Made to order: Heavy springs, mixed contacts and lands in one side, mixed standard and power contacts, and pre-wiring

Fitting guides: without PCB (opens in a new tab), with PCB (opens in a new tab) and with PCB and connector (opens in a new tab)

A family firm in Little Maplestead, supplying spring contacts since 1980

Colin Davis founded Coda Systems in 1980, and it is still family owned and run. Coda-Pin test probes came first. Swift-Dock followed in 2013 and is now designed into OEM products all over the world, shipped from the Essex headquarters.

1980 Colin Davis founds Coda Systems
2006 The move to Oak Road, Little Maplestead
2013 Swift-Dock launched
2022 Swift-Dock-Magnetic, the self-aligning cover

A Swift-Dock-Magnetic self-aligning cover pair, fitted to a two-contact Swift-Dock — Flown by Skyward Experimental Rocketry
Skyward, the Milan association of students and engineers who design, build and launch sounding rockets, are European champions at EuRoC. They use Swift-Dock-Ultra and Swift-Dock-Magnetic to connect their rocket compartments and ground systems.
Skyward on YouTube (opens in a new tab)

Ordering from Little Maplestead, one pair or 20,000

Minimum order: None. Buy a single side to try it.
Volume: Price breaks on every part, and quotes above 20,000 for most.
Dispatch: Orders after 2pm leave the next working day, subject to stock.
UK delivery: £9.50 standard, or guaranteed next day by noon for £18 (orders up to 5 kg).
Abroad: EU £25, rest of the world £35, Northern Ireland £19.50.
Paying: Card in the shop, or a 30-day credit account.
Ordering online: A free account on coda-systems.co.uk.
Pre-wiring: Quoted to your wiring requirements.

£8.25 1 to 99
£7.75 100 to 999
£6.95 1,000 to 4,999
£6.25 5,000 to 9,999
£5.50 10,000 to 19,999
Quoted 20,000 and more

Price each for SD-DATA-7-SCL, the spring side of the 7-pin data pair, ex VAT. From its page on coda-systems.co.uk, 22 October 2026.

IP ratings, contact counts, vibration and docking gaps

Answers from Coda’s own Swift-Dock FAQ. Read the full FAQ (opens in a new tab)

What IP rating does Swift-Dock have?

Coda doesn’t quote one, because it depends on the product a pair is designed into. Its estimate is IP50 without the SD-G gasket and IP55 with it. Potting compound or liquid silicone on the back of the assembly can approach IP67.

Can I have more than six contacts?

Yes. Swift-Dock-Data comes in 7, 8, 9 and 12 pin versions, and SD-DATAPOWER-8 carries 6 data and 2 power contacts. For more than 12, Coda recommends several arrays in the dock.

Which side goes in the dock?

The spring contact side. Coda advises keeping the springs out of the wet: the land side suits the portable part and can be sealed from the back with potting or silicone.

What gap should the housings have when docked?

1.0 to 1.5 mm. Too little compression or too big a gap can make the electrical contact unstable.

Are lighter or heavier springs available?

Light springs are in the shop for Swift-Dock 7 mm, Mini and Ultra-Power, and long reach versions for Mini and Power. Heavy springs, mixed contacts and lands in one side, and mixed standard and power contacts are made to order.

How does Swift-Dock cope with vibration and sliding?

It takes light vibration. Strong or specific vibration can wear contacts early or cause disconnects, so test the interface in your approval process. A sliding or angled approach works with care for the plating.

Is there a minimum order, and can I get samples?

There is no minimum order quantity: buy a single side in the shop with a free account, or request samples from the technical team with the form below.

Request samples, pre-wiring or a volume quote

Your request goes to Coda’s technical team in Little Maplestead. Choose a pair in the finder first and its part numbers come with it.

01787 478678, Monday to Thursday
technical@coda-systems.co.uk

An SD-DATAPOWER-8 pair: a land side and a spring side with six data and two power contacts — Six data and two power contacts in one pair: charge and sync in one action.