Commercial Hi-Rel Qualification Testing Summary

Qualification testing was performed on the Multi-Mix® module MRC-2A-3G. This double-balanced mixer is a seven layer assembly, containing a ring of Schottky diodes. It operates over the frequency range 1.4 GHz to 5.0 GHz.

Ten modules were submitted for qualification testing, and all ten passed the screening requirements. There is one caveat, however. The surface finish of this ten piece lot was immersion tin, which was not expected to pass solderability. Normally, a fused tin/lead or nickel/gold finish would have been used, but those processes were not on-line at the time of qualification. Solderability was performed in order to expose the modules to the environments of "steam-age" and then submerging in molten solder. Electrical performance after these harsh environments was proven to be invariant.

The following table summarizes the qualification tests that were performed. Ten modules were submitted for LEVEL I and LEVEL II testing. Two modules were submitted for LEVEL III testing.

Level I Summary

MERRIMAC P/N:
DATE CODE:

PERFORM ON 100% OF PARTS

TEST	METHOD	QTY ACC	QTY REJ	DATE	QC STAMP
ELECTRICAL (AMBIENT)	STORE DATA TO DISK, PRINT GRAPH
THERMAL SHOCK	MIL-STD-202 METHOD 107, c. A; -55 TO +85 C, 10 CYC, 15 MIN DWELL
ELECTRICAL (CONV. LOSS)	STORE DATA TO DISK,

S/N'S ACC:

S/N'S REJ:

Level II Summary

MERRIMAC P/N:
DATE CODE:

PERFORM ON 100% OF PARTS

TEST	METHOD	QTY ACC	QTY REJ	DATE	QC STAMP
THERMAL BAKE/BURN-IN*	MIL-STD-202, METHOD 108,c. A; 96 HRS @ +125 C
ELECTRICAL (CONV. LOSS)	STORE DATA TO DISK,
ACCELERATION	MIL-STD-883, METHOD 2001,c. A; 1000g, Y1 AXIS, 1 MIN DURATION
ELECTRICAL (CONV. LOSS)	STORE DATA TO DISK,
RADIOGRAPHIC	MIL-STD-883, METHOD 2012,c. C; MAXIMUM PARTICLE SIZE: 0.005"

*APPROPRIATE BIAS CURRENT APPLIED FOR ACTIVE COMPONENTS

S/N'S ACC:

S/N'S REJ:

Level III Summary Subgroup I

MERRIMAC P/N:
DATE CODE:

SUBMIT TWO SAMPLES THAT HAVE SUCCESSFULLY PASSED LEVELS
I AND II TO THE FOLLOWING TEST SEQUENCE

S/N's:_________________,_________________

TEST	METHOD	QTY ACC	QTY REJ	DATE	QC STAMP
VIBRATION	MIL-STD-202, METHOD 204, c. E; 10-2000 Hz, 50g PEAK, 20 MIN/AXIS 12 TIMES/AXIS
ELECTRICAL (CONV. LOSS)	STORE DATA TO DISK,
MECHANICAL SHOCK	STORE DATA TO DISK,
ELECTRICAL -55 @ C: ___ +25 ___ +85	MIL-STD-883, METHOD 2012,c. C; MAXIMUM PARTICLE SIZE: 0.005"

Level III Summary Subgroup II

MERRIMAC P/N:
DATE CODE:

SUBMIT TWO SAMPLES THAT HAVE SUCCESSFULLY PASSED LEVELS
I AND II TO THE FOLLOWING TEST SEQUENCE

S/N's:_________________,_________________

TEST	METHOD	QTY ACC	QTY REJ	DATE	QC STAMP
SOLDERABILITY	MIL-STD-202 METHOD 208
RESISTANCE TO SOLDERING HEAT	MIL-STD-202 METHOD 215
RESISTANCE TO SOLVENTS	MIL-STD-202 METHOD 215
MOISTURE RESISTANCE	MIL-STD-202 METHOD 106; STEP 7B, INITIAL MEASUREMENTS AND POLARIZATION N/A
ELECTRICAL (CONV. LOSS)	STORE DATA TO DISK,
VACUUM BAKE	2 HOURS + 149° C
ELECTRICAL (AMBIENT)	STORE DATA TO DISK, PRINT GRAPH