I should add: there may be an 85/85 THB test in the Telcordia (Bellcore) GR-78. I don't have a copy and can't remember.
Tim Reeves

	-----Original Message----- 
	From: Tim Reeves 
	Sent: Fri 9/13/2002 8:02 AM 
	To: Victor Hernandez; [log in to unmask] 
	Cc: 
	Subject: RE: Reliability Testing 85/85
	
	

	Victor, 

	The IPC Test Method 2.6.3e for Moisture and Insulation Resistance is also known as a THB test (temperature/humidity/bias). It has three conditions to which the sample can be exposed. (1) 35C/85%RH static for 4 days (2)  50C/85%RH static for 4 days (3) 20 cycles of 25C to 65C/85% RH for 160 hrs., all with 100VDC bias.

	An 85C/85%RH test would just be a (more severe) variation of this test.

	It is available for FREE download at http://www.ipc.org/html/tm2.6.htm.

	Tim Reeves

	 

	Fellow TechNetters,
	
	   What IPC document covers Reliability Testing such as 85/85.   What is
	accomplish by this test.
	   What IPC document covers Reliability Testing such as 85/85 with BIAS.
	What is accomplish by this test.
	
	Victor G. Hernandez
	
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