Single and Double Row .050" Pitch SMT and Through-Hole Spring-loaded Connectors

Mill-Max has developed high density, .050" (1,27mm) pitch through-hole and surface mount spring-loaded connectors (SLC) available in single and double-row strip packaging.

Each precision-machined spring pin component is plated 20µ" hard gold and assembled in a high temperature thermoplastic insulator suitable for wave and reflow soldering processes. Every Mill-Max SLC is RoHS compliant.

Series 854 / 10-001101 and 855 / 10-001101 through-hole insulators feature molded standoffs to improve soldering and cleaning beneath the connector. Tail diameters of .016" require minimal diameter plated holes for connector mounting, maximizing signal routing between pins.

Series 854 / 30-001101 and 855 / 30-001101 surface mount spring connectors are low profile, standing less than .230" tall when engaged mid-stroke (.0275"). Each SMT spring pin features a base geometry of .029" round by .010" tall to maximize soldering surface area and promote solder joint fillet.

Mill-Max also offers multiple options of .050" (1,27mm) pitch Target Connectors. These provide a gold-plated, flat and conductive mating surface for the 854/855 series and are precision-machined contacts assembled into thermoplastic insulators. They are RoHS compliant and suitable for reflow soldering.

Mill-Max SLC's are often used as the internal battery connection in portable instruments, as the external battery connection for charging these instruments (docking stations), or for stacking printed circuit boards in an assembly. Spring pin connectors are also excellent for mezzanine-tiered board modules that require blind mate assembly.

High density. .050” (1,270mm) pitch in single row (854 series) and double row (855 series) strips.
Through-hole or surface mount. Through-hole versions use .016” (0,406mm) tails; SMT versions reflow directly to the pad.
Rated for repeated mating. 100,000 cycles at mid-stroke, with 8A per pin at 30°C temperature rise.
Gold throughout. 20µ” gold body and plunger over a 10µ” gold beryllium copper spring.

Specifications

Specification	Value
Pitch	.050” (1,270mm)
Rows	Single row (854 series) or double row (855 series)
Mounting	Through-hole (-10-001101) or surface mount (-30-001101)
Stroke	.055” (1,397mm) max; .028” (0,699mm) mid-stroke
Spring force	60g at mid-stroke; 5g initial (preload)
Current rating*	8A per pin at 30°C temperature rise; 6.40A derated 20%
Contact resistance	30mΩ max
Durability	100,000 cycles at mid-stroke
Operating temperature	-55°C to +125°C
Plating	20µ” gold body and plunger; 10µ” gold spring
Spring	Standard force beryllium copper (spring 71)
Insulator	Nylon 4/6

* Current rating is per pin, tested at 30°C temperature rise. Values apply to the standard -001101 versions of all four series.

Popular part numbers

Each series is offered in multiple position counts. The 10-position versions are shown below; visit the series pages above for every position count.

Part Number	Description	Resources
● 854-22-010-10-001101	Single row, through-hole, 10 positions. Initial height .267” (6,782mm).	DatasheetOrder SampleCheck Stock
● 854-22-010-30-001101	Single row, surface mount, 10 positions. Initial height .252” (6,401mm).	DatasheetOrder SampleCheck Stock
● 855-22-010-10-001101	Double row, through-hole, 10 positions. Initial height .267” (6,782mm).	DatasheetOrder SampleCheck Stock
● 855-22-010-30-001101	Double row, surface mount, 10 positions. Initial height .252” (6,401mm).	DatasheetOrder SampleCheck Stock

^●^{Normally stocked at our Authorized Distributors.}

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Published Date

September 1st, 2010

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8 Reasons to Choose Mill-Max Spring Loaded Connectors

To make the maximum impression on customers, you need to make the right connection. Get maximum connectivity with Mill-Max spring-loaded connectors. Here are eight ways that our spring-loaded connectors take your connections to the max.

Number 1. With standard offerings up to 3-millimeters in plunger stroke, our spring-loaded pins compensate for stack-up tolerances in almost any application.

Number 2. With spring-loaded pins, there is no insertion or extraction of components. There is only the force of the spring itself, making an easy connection to target contacts or PCB pads.

Number 3. Traditional male-female interconnect systems require near-perfect alignment to ensure a quality connection and minimize damage potential. Because spring-loaded pins can mate with pads on a connecting board, there is more offset tolerance. This speeds up assembly and reduces the likelihood of damage.

Number 4. Since one spring-loaded pin can replace two parts in a connection, there are fewer parts to spec, purchase, track and assemble.

Number 5. Traditional connector systems are typically rated for hundreds of cycles, or maybe even a few thousand cycles. Our spring-loaded pins are rated to 100,000 cycles—and some are rated to as many as 1 million cycles!

Number 6. With Mill-Max spring-loaded pins, you can reduce between-board spacing to just 39 thousandths of an inch. Pin to pin spacing can be as fine as 50 thousandths of an inch.

Number 7. Our manufacturing equipment is top of the line. Our spring-loaded pins are precision-machined and plated gold for maximum reliability in the most critical applications.

Number 8. We test our spring-loaded pins extensively in our state-of-the-art lab. So we have the test data to back up our published specifications.

For more information visit Mill-Max online. You can find the right connector using the product finder at www dot mill dash max dot com.

Make the maximum impression on your business with Mill-Max.