When the depletion layer spans the width of the conduction channel, "pinch-off" is achieved and drain-to-source conduction stops. Pinch-off occurs at a particular reverse bias ("V"GS) of the gate–source junction. The "pinch-off voltage" (Vp) (also known as "threshold voltage" or "cut-off voltage") varies considerably, even among devices of the same type. For example, "V"GS(off) for the Temic J202 device varies from to . Typical values vary from to . (Confusingly, the term "pinch-off voltage" is also used to refer to the "V"DS value that separates the linear and saturation regions.)