What is "snapback"

n. 1 The reimposition of an earlier and usually higher tariff. 2 (context slang English) An adjustable, flat-brimmed baseball cap with snap fasteners on the back.

Snapback may refer to:

• Snapback (Gladiators), an event played in several incarnations of the television series Gladiators
• Snapback (Go), a type of capture in the board game Go
• Snapback (hat), a hat which is snapped in the back, and can be adjusted to fit
• Snapback (electrical), a mechanism whereby a bipolar transistor turns on due to avalanche breakdown or impact ionization providing base current
• "Snapback" (song), a song by the band Old Dominion from the album Meat and Candy

Snapback (British English: flat peak), called "flat cap" in some areas, is an urban slang term for an adjustable flat brim baseball cap. All other design elements are identical to modern, fitted, flat-billed caps as worn by professional baseball players. Snapbacks are less expensive than fitted baseball caps, and have become increasingly trendy in young urban fashion.

Although trucker hats and other types of adjustable baseball caps may be sold with pre-bent brims, usually with a mesh back section, these are not typically called "snapbacks" in urban slang. The brim is often left unbent in popular culture.

Youth culture and hip hop fashion popularised the hat, although it is now popular among many groups and ages.

Snapback is a mechanism in a bipolar transistor in which avalanche breakdown or impact ionization provides a sufficient base current to turn on the transistor. It is used intentionally in the design of certain ESD protection devices integrated onto semiconductor chips. It can also be a parasitic failure mechanism when activated inadvertently, outwardly appearing much like latchup in that the chip seems to suddenly blow up when a high voltage is applied.

Snapback is initiated by a small current from collector to base. In the case of ESD protection devices, this current is caused by avalanche breakdown due to a sufficiently large voltage applied across the collector-base junction. In the case of parasitic failures, the initiating current may result from inadvertently turning on the bipolar transistor and a sufficiently large voltage across the collector and base causing impact ionization, with some of the generated carriers then acting as the initiating current as they flow into the base. Once this initiating current flows into the base, the transistor turns on and the collector voltage decreases to the snapback holding voltage. This voltage happens at the point where the processes of base current generation and the bipolar transistor turning on are in balance: the collector-emitter current of the bipolar transistor decreases the collector voltage, which results in a lower electric field, which results in a smaller impact ionization or avalanche current and thus smaller base current, which weakens the bipolar action.

"Snapback" is a song by American country music group Old Dominion. It was released on January 11, 2016 as the second single from their debut studio album, Meat and Candy.