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Card Edge Connector
Industrial, IT Datacom
The BR0361X7XK1XX is a 36-position, 1.00 mm pitch edge card slot rated for PCIe Gen4.0 (16 GT/s), built around a feature most spec sheets gloss over: a molded overhang guide post that aligns the card before the contacts ever touch. Contacts are 0.25 mm copper alloy, the housing is black resin, and the DIP tails arrive with a solder-ready finish for trouble-free wave soldering. For riser cards, capture boards, or test fixtures that see constant insertion, this is the part that keeps the line moving.
Cards rarely go in perfectly straight. A slight angle lets the first contacts scrape the gold fingers, and that damage surfaces as intermittent failures months later. The guide post makes that scenario physically impossible: two Ø2.35 mm alignment holes (±0.05 mm) capture the post before the 36 Ø0.70 mm solder pads (±0.08 mm) do their work, so the card is pulled into position while nothing conductive has touched yet.
Mis-seat prevention. Operators and automated insertion equipment get an unambiguous reference. A backwards or off-angle card refuses to seat instead of letting the contacts take the damage.
Stress relief. With insertion force capped at 1.15 N max per contact pair, the post and housing absorb the load — not the solder joints. Boards with guide posts show fewer cracked-joint returns.
Post-reflow stability. The same post that aligns the card also holds the connector in place during wave soldering, so components cannot drift while the solder is molten. Rework stays near zero.
Parameter | Rating | What it means in practice |
|---|---|---|
Current rating | 1.1 A/pin min | Can also carry low-speed auxiliary power and sensor lines, no separate harness needed |
Contact resistance | 30 mΩ max (initial) | The connector never becomes a hot spot or a link-budget surprise |
Insulation resistance | 1000 MΩ min @ 500 V DC | No measurable leakage between adjacent circuits |
Dielectric strength | 500 V AC, no breakdown | Holds up in humid or contaminated environments where creepage shrinks |
Operating temperature | −25 °C to +85 °C | Covers indoor industrial equipment, not just benign consumer enclosures |
Two numbers deserve extra attention. The 1.1 A/pin rating lets you route a card's auxiliary power through the connector itself instead of adding a second, bulkier power connector — a common trick in compact riser designs. And the −25 °C start temperature matters for equipment sitting in unheated warehouses: it must make contact on first power-up, and this connector is rated for exactly that.
Gold thickness is the biggest cost driver on any plated connector and the one most commonly overspecified. This family gives you six grades so you pay for exactly the durability you need:
Plating code | Contact area | Best suited for |
|---|---|---|
A | Flash gold | Prototypes, low-cycle test boards, cost-sensitive consumer builds |
B | 3 µin gold | Commercial equipment with occasional insertion |
C | 5 µin gold | Cards plugged and unplugged a few times a year |
D | 10 µin gold | Rack equipment, hot-swap modules, field-serviceable units |
E | 15 µin gold | Industrial control, high-vibration environments |
G | 30 µin gold | Long-life infrastructure, harsh environments, extended warranties |
All grades share the same 3 µin minimum nickel underplate — that is what stops copper migration and keeps the gold doing its job — and the tails are tinned with 80 µin minimum tin, so wave-solder wetting is identical regardless of grade. Practical rule: if the card is inserted once at the factory, flash gold is honest engineering. If a field tech will reseat it, step up to 10 µin. The per-unit cost difference is small; the difference in field callbacks is not.
The post must do its job at any board thickness, so post length (DIM A) is matched to the PCB:
Part number | DIM A (post length) | Matched PCB thickness |
|---|---|---|
BR0361X70K1XX | 2.50 mm | 1.60 mm |
BR0361X71K1XX | 3.10 mm | 2.00 mm |
BR0361X72K1XX | 3.50 mm | 3.00 mm |
Why it matters: a post too short for a thick board disengages before the card is fully seated; one too long for a thin board bottoms out and tilts the card, throwing off mating height. Matching DIM A keeps the card parallel to the PCB plane and the solder joints uniform. Send us your target board thickness and the right variant is the answer — no custom tooling required.
A spec sheet tells you the part is RoHS-compliant and black. It cannot tell you how the connector is made and shipped — and that is where the buying experience is decided.
Incoming material control. Contact strip hardness and plating thickness are verified per batch before stamping, so the copper alloy performs the same from reel to reel.
Mechanical verification. Insertion force and contact resistance are sample-tested against the 1.15 N and 30 mΩ limits before a lot is released — the numbers are audited, not aspirational.
Documentation you can file. RoHS declarations ship with every order; halogen-free (HF) and GP (general-purpose) options are available on request.
Realistic lead times. Standard variants leave the factory in 2–3 weeks, with safety stock routinely held on the 1.60 mm version. Emergency slots exist for line-down situations.
Customization without drama. Post length for unusual stacks, alternate gold grades, housing color, and packaging (tray or carton) can all be adjusted on the base part.
Tolerances hold to ±0.15 mm on three-decimal dimensions, which is why the connector behaves identically from lot to lot. That consistency never makes it onto a datasheet, but it is what your production line actually feels.
Riser and extension cards for servers and workstations, where cards are swapped during maintenance
Video capture and I/O cards that live through hundreds of insertions on test benches
NVMe adapter cards that bridge M.2 drives to PCIe slots
Industrial control modules in cabinets subject to vibration and temperature swings
Test fixtures and burn-in boards, where a cheap connector wears out in weeks
Hot-swap backplanes where the post doubles as a blind-mate alignment aid
The 1.00 mm pitch keeps the x1 footprint compact, and the DIP tails mean the connector joins the rest of your through-hole components in one wave pass — no hand-solder station, no selective-solder detour.
No — it engages dedicated PCB alignment holes, and the recommended edge-card pattern reserves clear space around them. Keep the area around the two Ø2.35 mm holes free of copper and components.
Yes. It is rated for 16 GT/s but backward compatible — it never limits the link.
Count insertions over the product's life. A few dozen: flash or 3 µin. Hundreds: 10–15 µin. Thousands or harsh environments: 30 µin. The nickel underplate is identical in every grade, so upgrading gold is purely a durability decision.
Yes. The 80 µin minimum tin finish wets well with SAC alloys, and the matched post length keeps the connector stable through the solder wave.
The part number carries it: the environment digit selects R (RoHS), G (GP), or H (halogen-free). Our sales team confirms the full code before production.
Every digit answers a question:
Digit block | Meaning | Options in this family |
|---|---|---|
BR0361 | Base part: PCIe Gen4.0 36P slot with guide post | — |
X7 | Post length / board thickness | 0 → 1.60 mm PCB, 1 → 2.00 mm, 2 → 3.00 mm |
X | Gold plating grade | A = flash, B = 3, C = 5, D = 10, E = 15, G = 30 µin |
K | Housing color | K = black |
1 | Contact configuration | 1 = standard 36-position dual-row |
XX | Environment and packing | R/C = RoHS + tray, H/E = halogen-free + carton, etc. |
To order, give us three answers: PCB thickness, expected insertion count, and packaging preference. Everything else follows from the table — and if you are unsure, one message to the CONSHARE team gets you a confirmed part number and lead time the same day.
