DB25 D-Sub Connectors: China Sourcing Reference
1 resources tagged with "Db25"
DB25 is the 25-pin D-Sub connector still used for legacy serial, parallel, and industrial control interfaces, and it's one of the cheapest D-Sub shells to source from China. The recurring quality issues are inconsistent shell plating and contact gold thickness, plus EMC backshell options that vary widely between factories. For shielded industrial use, the metal backshell and 360-degree cable-shield termination matter more than the connector body itself.
When you source DB25, confirm the contact type (machined vs stamped), the plating spec on the contacts, and whether you need solder-cup, IDC, or crimp termination. The common pitfall is buying on price and getting thin-gold stamped contacts that fail after limited mating cycles in a field-serviced product.
Wiki (1)
FAQ
What is the difference between DB25 contact types?
Machined contacts are more durable and tolerant of repeated mating; stamped-and-formed contacts are cheaper but wear faster. For connectors that get plugged often, specify machined contacts and a real gold-flash thickness.
Do I need a metal backshell for DB25?
For EMC-sensitive or industrial cabling, yes — a metal backshell with 360-degree shield termination controls emissions and noise. Plastic backshells are fine only for benign, unshielded signals.
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