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Reusable ESD Shunt for Tape Head-Cable Subassemblies

IP.com Disclosure Number: IPCOM000016387D
Original Publication Date: 2002-Nov-08
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue



Tape drives require that the tape head be tested before and after it is mounted to its head cables, while it is exposed to electrostatic discharge (ESD). Also, and perhaps most critical, is that the tape head may be part of a Field Replaceable Unit (FRU), and thus the FRU needs to be tested both during manufacturing and before being sent to the field for a repair action. However, all this time, the tape head needs protection from ESD. Accordingly, we propose a reusable/recyclable ESD shunt for tape heads so that the ESD protection can temporarily be removed for testing and then reinstated. A typical head cable 101 for a tape drive is shown in Figure 1. Head cable 101 has a plurality of conductors 102 which extend from the head end 103 to the I/O card end 105 of head cable 101. Head end 103 has connections 104 which are connected to the tape head, typically via solder. Card end 105 has connections 106 which are connected to an I/O card, again typically via solder. Cable 101 also typically has a plurality of holes 107, 108 for anchoring the cable to the I/O card. 104 104 103 103