Seagate ST373453LC - Cheetah 73.4 GB Hard Drive Product Manual page 69

Cheetah 15K.3 SCSI Product Manual, Rev. G
Recommended mating flat cable connector part numbers are:
Amp Model 786096-7
Amp Model 786090-7
Amp Model 749925-5
Amp Model 88-5870-294-5 W/O Strain Relief (25 mil conductor centers, 30 AWG wire).
Amp Model 1-480420-0
Berg 69307-012
[1] See Figure 24.
The drive device connector is a nonshielded 68 conductor connector consisting of two rows of 34 female pins
with adjacent pins 50 mils apart. The connector is keyed by means of its shape (see Figure 25).
9.6.4.2 Mating connectors for LC model drives
The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with
adjacent contacts 50 (1.27 mm) mils apart (see Figure 26). 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 disc 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-8451 Specification for SCA-2
Unshielded Connections." See www.sffcommittee.org to obtain this specification.
Female, 68-pin, panel mount
Female, 68-pin, cable mount
(50 mil conductor centers, 28 or 30 AWG wire)
Use two, 34 conductor, 50 mil center flat cable with this connector.
This type connector can only be used on cable ends. [1]
Use either on cable ends or in cable middle section for daisy-chain
installations [1].
Power connector 4 circuit housing
12-position, 2 x 6, 2 mm receptacle housing
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