Through-Hole Micro B Plug for 10000-Cycle Duty
The Hirose ZX20-B-5S-UNIT(30) is a USB 2.0 micro B plug with 5 contacts in a vertical through-hole mount. It sits in the ZX series as a standard-density micro USB connector built for repeated field mating — the 10000-cycle rating is an order of magnitude above typical consumer micro USB parts, which usually spec 5000 to 10000 cycles. The 1.8 A per-contact rating covers USB 2.0 charging current for peripherals, and the 30 VAC rating handles the bus voltage comfortably.
Mounting and PCB Fit
This is a through-hole vertical mount — the connector sits perpendicular to the board, with solder tails that go through plated holes. No SMT reflow; it runs through a wave or selective solder process. The steel, stainless shell provides EMI shielding for the USB 2.0 signal pair.
Temperature Range and Flammability
Functional Alternate: ZX80-B-5S(30)
The ZX80-B-5S(30) is a direct functional alternate — same 5 contacts, same 1.8 A and 30 VAC ratings, same 10000-cycle gold contacts, same USB 2.0 micro B plug form factor. The difference is mounting: the ZX80 adds a flange for panel-mount retention, while the ZX20-B-5S-UNIT(30) is through-hole only. If your design needs the connector bolted to a panel face rather than relying solely on solder joints for mechanical retention, the ZX80-B-5S(30) is the pick. For a standard PCB-mount micro B, the ZX20-B-5S-UNIT(30) is the correct BOM line.