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Multi-Mix® Application Notes

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

       


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