TORX1350A(F)

2020-03-12

3

© 2016-2020

Toshiba Electronic Devices & Storage Corporation

7. Precautions during use

(1)

Absolute maximum rating

The absolute maximum ratings are the limit values which must not be exceeded during operation of

device. Any rating value must not be exceeded. If the absolute maximum rating value is exceeded, the

characteristics of devices may never be recovered properly. In extreme cases, the device may be

permanently damaged.

(2)

Operating Range

The operating range is the range of conditions necessary for the device to operate as specified in

individual technical datasheets and databooks. Care must be exercised in the design of the equipment. If a

device is used under conditions that do not exceed absolute maximum ratings but exceed the operating

range, the specifications related to device operation and electrical characteristics may not be met, resulting

in a decrease in reliability.

If greater reliability is required, derate the device’s operating ranges for voltage, current, power and

temperature before use.

(3)

Soldering

Optical modules are comprised of internal semiconductor devices. However, in principle, optical modules

are optical components. During soldering, ensure that flux dose not contact with the emitting surface or

detecting surface. Also ensure that proper flux removal is conducted after soldering.

This optical module comes with a protective cap. The protective cap is used to avoid malfunction when the

optical module is not in use. Not that it is not dust or waterproof.

As mentioned before, optical modules are optical component. Thus, in principle, soldering where there

may be flux residue or flux removal after soldering are not recommended. Toshiba recommends that

soldering be performed without the optical module mounted on the board. Then, after the board is cleaned,

solder the optical module manually. Do not perform any further cleaning.

If the optical module cannot be soldered manually, use non

−halogen (chlorine−free) flux and make sure,

without cleaning, there is no residue such as chlorine.

(4)

Noise resistance

Use a simple noise filter on the fiber optic receiving module power line. If the ripple in power supply used is

high, further reinforce the filter.

When locating the optical module in an area susceptible to radiated noise, increase shielding by covering

the optical module and the power line filter using a metallic cover.

(5)

Vibration and shock

This module is resin

−molded construction with wire fixed by resin. This structure is relatively resistant to

vibration or shock, In actual equipment, there are some cases where vibration, shock, or stress is applied

to soldered parts or connected parts, resulting in line cut. Attention must be paid to the design of the

mechanism for applications which are subject to large amounts of vibration.

(6)

Fixing fiber optical receiving module

Solder the fixing pin (pins 4 and 5) of fiber optic receiving module TORX1350A(F) to the printed circuit

board to fix the module to the board.

(7)

Solvent

When using solvent for flux removal, do not use a high acid or high alkali solvent. Be careful not to pour

solvent into the optical connector ports. If solvent is inadvertently poured into them, clean it off using cotton

tips.

(8)

Protective cap

When the fiber optic receiving module TORX1350A(F) is not in use, use the protective cap.

(9)

Supply voltage

Use the supply voltage within the operating ranges (VCC = 5 ± 0.25 V). Make sure that supply voltage

does not exceed the absolute maximum rating value of 6 V, even instantaneously.