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Connectors, Interconnects

Connectors Interconnects covers the parts that join one circuit to another, from the AC inlet on a power supply chassis down to the tiny FFC connector holding a display ribbon in a handheld device. The category is broad. It includes AC power connectors, backplane and card edge types, banana and tip jacks for test benches, barrel power jacks, coaxial RF connectors, D-sub shells, circular connectors for industrial and mil-spec gear, fiber optic termini, board-to-board mezzanine parts, and between-series adapters for mating dissimilar interfaces. Nearly every assembled product contains several of these, and they show up in telecom racks, medical equipment, automotive harnesses, instrumentation, and consumer electronics alike. Buyers sourcing connectors tend to check a few things before anything else: mating cycle rating, contact plating (gold flash versus 30 microinch gold changes both price and life), current and voltage ratings per contact, wire gauge range, and the exact keying or polarization code, since one wrong suffix can mean a housing that looks right but will not mate. Pitch and footprint matter for board-level parts, and RF types add impedance and frequency range to the checklist. The real trade-off in this category is usually lead time against price. Franchised stock on popular TE, Molex, or Amphenol series can carry 12 to 20 week factory lead times when demand spikes, so many buyers turn to independent channels for shortages. That is where counterfeit risk creeps in, especially on high-value circular and mil-spec connectors, and it is worth asking for traceability and photos of labels and date codes before committing. Packaging preference matters too: cut tape versus full reel, or bagged versus tray, affects both price and how the parts run through your assembly process. You can check current stock and get a quote on any part number in this category at icxing.com.

Frequently Asked Questions

How do I make sure the connectors I buy from an independent distributor are not counterfeit?

Ask for full traceability paperwork, lot and date codes, and clear photos of the actual parts and labels before payment. Reputable independent distributors will also support third-party testing such as XRF plating analysis and decapsulation on higher-value parts. If a price is far below market on a shortage part, treat that as a warning sign.

The part number I need shows a long factory lead time. What are my options?

First check whether a different suffix of the same series (plating, keying, or packaging variant) is in stock, since those are often interchangeable for your build. Independent distributors frequently hold franchised excess or factory overruns on constrained series, so sending your full BOM for a shortage quote is usually faster than waiting on the standard lead time.

Does gold plating thickness actually matter when I select a connector?

Yes. Gold flash is fine for a few dozen mating cycles in a controlled environment, but connectors rated for hundreds of cycles typically specify 15 to 30 microinches of gold over nickel. Thinner plating saves cost but wears through to the base metal, which raises contact resistance and causes intermittent failures over time, especially in humid or high-vibration environments.

Image Part Manufacturer Description Stock Action
691214110002S Würth Elektronik
3.50 MM TERMINAL BL...
7,000
In-stock
Inquiry
691103110003 Würth Elektronik
TERM BLK 3POS SID...
6,390
In-stock
Inquiry
691211720002 Würth Elektronik
TERM BLOCK 2POS 45...
2,950
In-stock
Inquiry
691214310003 Würth Elektronik
3.81 MM TERMINAL BL...
1,750
In-stock
Inquiry
691412120006B Würth Elektronik
3.50 MM TERMINAL BL...
1,320
In-stock
Inquiry
691214300002 Würth Elektronik
3.81 MM TERMINAL BL...
1,640
In-stock
Inquiry
691805010302 Würth Elektronik
TERM BLK 2POS SID...
2,020
In-stock
Inquiry
691213710003 Würth Elektronik
TERM BLK 3POS SID...
3,050
In-stock
Inquiry
691216510003S Würth Elektronik
5.08 MM TERMINAL BL...
4,050
In-stock
Inquiry
691201720003S Würth Elektronik
5.00 MM TERMINAL BL...
1,320
In-stock
Inquiry
691211720003 Würth Elektronik
TERM BLOCK 3POS 45...
3,210
In-stock
Inquiry
691216710002 Würth Elektronik
5.00 MM TERMINAL BL...
1,260
In-stock
Inquiry
691709710302 Würth Elektronik
TERM BLK 2POS SID...
4,070
In-stock
Inquiry
691210910004 Würth Elektronik
TERM BLOCK 4P HOR...
2,770
In-stock
Inquiry
691414720002B Würth Elektronik
TERM BLOCK 2POS 45...
5,480
In-stock
Inquiry
691243110004 Würth Elektronik
3.50 MM TERMINAL BL...
3,010
In-stock
Inquiry
691709710303 Würth Elektronik
TERM BLK 3POS SID...
4,270
In-stock
Inquiry
691210910005 Würth Elektronik
TERM BLOCK 5P HOR...
7,330
In-stock
Inquiry
691236510002 Würth Elektronik
TERM BLK 2P SIDE E...
3,650
In-stock
Inquiry
691210910006 Würth Elektronik
TERM BLOCK 6P HOR...
4,800
In-stock
Inquiry