Content-Type: |
text/plain |
Sender: |
|
Subject: |
|
From: |
|
Date: |
Thu, 13 Aug 1998 15:59:25 -0400 |
MIME-Version: |
1.0 |
X-To: |
|
Reply-To: |
|
Parts/Attachments: |
|
|
Graham,
The bulk feeder usually has an orientation option for resistors that
uses a photocell to measure the reflected light off of the bright
(ceramic) or dark (black/blue0 surface and rejects upside down chips.
Feeders specific to chip capacitors do not have this option or it is not
installed.
Good Luck!
> -----Original Message-----
> From: Collins, Graham [SMTP:[log in to unmask]]
> Sent: Thursday, August 13, 1998 12:55 PM
> To: [log in to unmask]
> Subject: Is resistor orientation (upside down) a concern?
>
> Technetter's
> A theoretical question.. It has been my understanding that surface
> mount resistors had to be mounted right-side up (white side down) to
> facilitate the proper heat dissipation from the part. Is this in fact
> true or have I been misinformed?
> If true, how do I manage to keep them right-side up if I'm using a
> bulk feeder where the part orientation is not controlled as it is on
> tape?
>
> regards,
>
> Graham Collins
> Process Engineer
> Litton Systems Canada
> (902) 873-2000 extension 215
################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe: SUBSCRIBE TechNet <your full name>
To unsubscribe: SIGNOFF TechNet
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################
|
|
|