9

General/Control Electrical Characteristics

(Over recommended operating conditions: Tc= 0ºC to +80ºC, Vcc=3.3V + 5%)

Regulatory Compliance

The overall equipment design will determine the

certification level. The module performance is offered

as a figure of merit to assist the designer in considering

their use in equipment designs.

Electrostatic Discharge (ESD)

There are two design cases in which immunity to ESD

damage is important.

The first case is during handling of the module prior to

mounting it on the circuit board. It is important to use

normal ESD handling precautions for ESD sensitive

devices. These precautions include using grounded

wrist straps, workbenches and floor mats in ESD

controlled areas. The module performance has been

shown to provide adequate performance in typical

industry production environments.

The second case to consider is static discharges to the

exterior of the equipment chassis containing the

module parts.

To the extent that the MT-based

connector receptacle is exposed to the outside of the

equipment chassis it may be subject to whatever

system-level ESD test criteria that the equipment is

intended to meet. The module performance exceeds

typical industry equipment requirements of today.

Electromagnetic Interference (EMI)

Most equipment designs using these high-speed

modules from Avago Technologies will be required to

meet the requirements of FCC in the United States,

CENELEC EN55022 (CISPR 22) in Europe and VCCI in

Japan. These modules, with their shielded design,

perform to the limits listed in Table 1 to assist the

designer in the management of the overall equipment

EMI performance.

Parameter

Symbol

Minimum Typical

Maximum Unit

Reference

Supply Current

300

400

mA

Power Dissipation

1.0

1.39

W

Immunity

Equipment utilizing these modules will be subject to

radio frequency electromagnetic fields in some

environments. These modules have good immunity

to such fields due to their shielded design.

Eye Safety

These 850 nm VCSEL-based transceiver modules

provide eye safety by design.

The HFBR-7924Z has been registered with CDRH and

certified by TUV as a Class 1M device under

Amendment 2 of IEC 60825-1. See the Regulatory

Compliannce Table for further detail. If Class 1M

exposure is possible, a safety-warning label should be

placed on the product stating the following:

LASER RADIATION

DO NOT VIEW DIRECTLY WITH OPTICAL

INSTRUMENTS.

CLASS 1M LASER PRODUCT

The optical port has recessed optics that are visible

through the nose of the port. The port plug provided

should be installed whenever a fiber cable is not

connected. This ensures the optics remain clean and

no cleaning should be necessary. In the event of the

optics being contaminated, forced nitrogen or dry

clean air at less than 20 psi is the recommended

cleaning agent. The features of the optical port and

guide pins preclude the use of any solid instrument.

Liquids are not advised due to potential damage.

Application of wave soldering, reflow soldering and/or

aqueous wash processes with the HFBR-7924Z modules

device on board is not recommended as damage may

occur.

Normal handling precautions for electrostatic sensitive

devices should be taken (see ESD section).