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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
691701310003B Würth Elektronik
3.81 MM TERMINAL BL...
4,720
In-stock
Inquiry
691305540004 Würth Elektronik
WR-TBL SERIES 3055_...
6,180
In-stock
Inquiry
691307500002 Würth Elektronik
5.08 MM TERMINAL BL...
5,230
In-stock
Inquiry
691309510002 Würth Elektronik
5.08 MM TERMINAL BL...
4,460
In-stock
Inquiry
691335510004 Würth Elektronik
5.08 MM TERMINAL BL...
5,630
In-stock
Inquiry
691311500010 Würth Elektronik
TERM BLOCK HDR 10P...
6,770
In-stock
Inquiry
691352410003 Würth Elektronik
TERM BLOCK PLUG 3...
2,450
In-stock
Inquiry
691321300009 Würth Elektronik
3.81 MM TERMINAL BL...
4,640
In-stock
Inquiry
691313510009 Würth Elektronik
TERM BLOCK HDR 9P...
6,010
In-stock
Inquiry
691307400002 Würth Elektronik
7.62 MM TERMINAL BL...
2,460
In-stock
Inquiry
691311500111 Würth Elektronik
TERM BLOCK HDR 11P...
7,640
In-stock
Inquiry
691318700003 Würth Elektronik
5.00 MM TERMINAL BL...
6,600
In-stock
Inquiry
691311700112 Würth Elektronik
TERM BLOCK HDR 12P...
7,390
In-stock
Inquiry
691317710003 Würth Elektronik
5.00 MM TERMINAL BL...
6,690
In-stock
Inquiry
691344710002 Würth Elektronik
5.00 MM TERMINAL BL...
4,530
In-stock
Inquiry
691307300004 Würth Elektronik
TERM BLOCK HDR 4P...
4,410
In-stock
Inquiry
691311500112 Würth Elektronik
TERM BLOCK HDR 12P...
4,810
In-stock
Inquiry
691318500002 Würth Elektronik
5.08 MM TERMINAL BL...
6,640
In-stock
Inquiry
691338500004 Würth Elektronik
5.08 MM TERMINAL BL...
3,410
In-stock
Inquiry
691381030002 Würth Elektronik
TERM BLOCK PLUG 2...
1,560
In-stock
Inquiry