Silonex Audiohm Optocouplers

[Steve Ridley]

By popular demand, here are the figures for a random sample 
of ten Silonex NSL-32 resistive optocouplers.  I wired all the LEDs
in series so the test currents would be the same in each one, and 
gave at least 30 seconds for the resistance to settle before 
measuring with a Fluke 79 - max 40M Ohm.  Measurements at low
currents were done under slightly subdued lighting as bright lights
had a slight effect on the highest resistance values.



Steve Ridley

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NSL7053	1	2	3	4	5	6	7	8	9	10	
LED mA	LDR K										
											
None	>40000	>40000	>40000	>40000	>40000	>40000	53800	>40000	>40000	12700	
											
0.002	31000	27500	33200	16200	18600	23200	25100	>40000	11000	3000	
0.005	6140	2810	5870	2260	2250	3800	925	>40000	1820	875	
0.01	1470	713	1440	538	563	877	340	14800	494	331	
0.02	364	215	368	158	167	224	123	2170	152	130	
0.05	74.7	57	79	43	43	51.7	36.3	185	40.8	43.9	
0.1	28.9	24.7	30.3	19.4	18.9	21.4	16.7	47.5	17.8	21.3	
0.2	12.5	11.4	12	9.74	9.06	9.93	8.26	16.9	8.44	10.9	
0.5	4.8	4.57	4.69	4.3	3.79	4.04	3.54	5.72	3.47	4.72	
1	2.52	2.51	2.42	2.43	2.05	2.16	1.94	2.87	1.91	2.65	
2	1.41	1.46	1.36	1.41	1.14	1.21	1.11	1.58	1.12	1.56	
5	0.71	0.752	0.68	0.725	0.768	0.612	0.564	0.799	0.589	0.81	
10	0.444	0.473	0.424	0.464	0.36	0.39	0.362	0.511	0.38	0.511	
20	0.284	0.302	0.268	0.306	0.236	0.258	0.248	0.346	0.255	0.332