Subject: | |
From: | |
Reply To: | DesignerCouncil E-Mail Forum. |
Date: | Fri, 18 Sep 1998 12:56:16 -0500 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Ken,
Good 'ole (and I do mean old) IPC-D-275 page 9 has a chart for
calculating distance between conductors for
voltage ratings.
Anything above 500V Internal = V x .0025mm
Exernal uncoated sea level to 10,000' = V x .005mm
Exernal uncoated sea level above 10,000' = V x
.0254mm
Exernal with permanent polymer coating any elev. = V
x .00305mm
Exernal with conformal coating over assembly any
elev. = V x .00305mm
External component lead/ termination, uncoated = V x
.00305mm
External component lead/ termination, with conformal
coating = V x .00305mm
Happy trials to you,
Barbara Burcham
Sr Designer
Halliburton Energy Services
Houston [log in to unmask]
> -----Original Message-----
> From: Ken Brown [SMTP:[log in to unmask]]
> Sent: Friday, September 18, 1998 12:13 PM
> To: [log in to unmask]
> Subject: [DC] FW: pcb design rules
>
> -----Original Message-----
> From: Ken Bown [mailto:[log in to unmask]]
> Sent: Friday, September 18, 1998 12:10 PM
> To: [log in to unmask]
> Subject: pcb design rules
>
>
> LOOKING FOR DEESIGN RULES FOT PCB LAND SPACING VS VOLTAGE NEED TO APPLY
> 2KV
> BETWEEN LANDS AND CONNECTOR PINS.
> REGARDS, KEN BOWN
> DELTA V INSTRUMENTS
> RICHARDSON. TX
>
> ################################################################
> DesignerCouncil 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 DesignerCouncil <your full name>
> To unsubscribe: SIGNOFF DesignerCouncil
> ################################################################
> 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
> ################################################################
################################################################
DesignerCouncil 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 DesignerCouncil <your full name>
To unsubscribe: SIGNOFF DesignerCouncil
################################################################
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
################################################################
|
|
|