Seagate Barracuda 18XL ST318416N, Product Manual

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66 Barracuda 18XL Product Manual, Rev. A
9.6.4.2 Mating connectors for “LC” and “LCV” models
The nonshielded connector shall be an 80 conductor connector consisting of two rows of 40 contacts with adja-
cent contacts 50 (1.27 mm) mils apart (see Figure 11b). I/O connection using a cable is not recommended.
The length and size of the host equipment DC power carrying conductors from the DC power source to the
host equipment 80 pin disk drive interface connector(s) should be strictly designed according to proper power
transmission design concepts. No possibility for the equipment user to attach an 80 pin cable/connector should
be allowed, since the length of the DC power carrying conductors could not be controlled and therefore could
become too long for safe power transmission to the drive. Daisy-chain 80 conductor cables should especially
not be allowed, since the power-carrying conductors on the 80 conductor interface were not intended to sup-
port a series of drives.
To insure that both drive connector and host equipment mating connector mate properly, both drive connector
and host equipment mating connector must meet the provisions of “SFF-8046 Specification for 80-pin connec-
tor for SCSI Disk Drives.”
9.6.4.3 Mating connectors for “N” models
The nonshielded cable connector shall be a 50 conductor connector consisting of two rows of 25 female con-
tacts with adjacent contacts 100 mils apart.
Recommended mating flat cable connector part numbers are:
[1] See Figure 10b.
The drive device connector is a nonshielded 50 conductor connector consisting of two rows of 25 male pins
with adjacent pins 100 mils apart. The connector is keyed (see Figure 11c).
Mating panel mount connector: 3M-CHE-2050-J01A10-KLE.
Closed end 3M-3425-7000 W/O Strain Relief, No Center Key
(for cable ends) [1] 3M-3425-7050 With Strain Relief, No Center Key
Dupont-66900-290 With Strain Relief, With Center Key
Open end 3M-3425-6000 W/O Strain Relief, No Center Key
(In daisy-chain) [1] 3M-3425-6050 With Strain Relief, No Center Key
Dupont-66900-250 With Strain Relief, With Center Key