
TOTX177L(F,T) 
2006-12-28 
4
(6) 
Panel attachment 
TOTX177L(F,T) has hole for panel attachment. Please be sure to attach it to panel with self
tapping 
screw. 
Solvent 
When using solvent for flux removal, do not use a high acid or high alkali solvent. Be careful not to 
pour solvent in to the optical connector ports. If solvent is inadvertently poured in to them, clean it off 
using cotton tips. 
Supply voltage  
Use the supply voltage within the recommended operating condition (V
CC
 = 5 ± 0.25 V). Make sure 
that supply voltage does not exceed the maximum rating value of 7 V, even for an instant. 
Input voltage 
If a voltage exceeding the maximum rating value (V
CC
 + 0.5 V) is applied to the transmitters' input, 
the internal IC may suffer damage. If there is a possibility that excessive voltage due to surges may 
be added to the input terminal, insert a protective circuit. 
(10) Soldering condition 
(7) 
(8) 
(9) 
Solder at 260°C or less for no more than ten seconds.
(11) The hole for chassis 
Please make a hole for inserting optical connector 
     the slash part in the following figure. 
(12)  Case(receptacle) material  
      The case is made of polycarbonate. Polycarbonate is usually stable with acid, alcohol, and  
      aliphatic hydrocarbons however, with petrochemicals (such as benzene, toluene, and acetone), 
      alkali, aromatic hydrocarbons, or chloric hydrocarbons, polycarbonate becomes cracked, swollen, 
      or melted. Please take care when choosing a packaging material by referencing the table below. 
〈
Chemicals to avoid with polycarbonate
〉
       PHENOMENON 
                    CHEMICALS 
 A 
Little deterioration 
But staining 
 B 
Cracked crazed, 
or Swollen 
gasoline 
methyl isobutyl ketone, ethyl acetate, butyl acetate 
methyl methacrylate, ethyl ether, MEK 
acetone, m-amino alcohol, carbon tetrachloride 
carbon disulfide, trichloroethylene, cresol 
thinners, oil of turpentine 
triethanolamine 
 C 
Melted 
{ }:
used as solvent 
benzene 
styrene, acrylonitrile, vinyl acetate 
ethylenediamine, diethylenediamine 
{chloroform, methyl chloride, tetrachloromethane, dioxane} 
{1,2-dichloroethane} 
 D 
Decomposed 
ammonia water 
other alkali 
nitric acid(low concentration) , hydrogen peroxide, chlorine 
acetic acid(70% or more) 
concentrated sulfuric acid