16
HFBR-14X4 Output Power Measured out of 1 Meter of Cable
Parameter Symbol Min. Typ.
[2]
Max. Unit Conditions Reference
50/125 µm PT50 -18.8 -15.8 -13.8 dBm T
A
= 25°CI
F
= 60 mA dc Notes 5, 6, 9
Fiber Cable
-19.8 -12.8 peak
NA = 0.2
-17.3 -13.8 -11.4 T
A
= 25°CI
F
= 100 mA dc
-18.9 -10.8
62.5/125 µm PT62 -15.0 -12.0 -10.0 dBm T
A
= 25°CI
F
= 60 mA dc
Fiber Cable
-16.0 -9.0 peak
NA = 0.275
-13.5 -10.0 -7.6 T
A
= 25°CI
F
= 100 mA dc
-15.1 -7.0
100/140 µm PT100 -9.5 -6.5 -4.5 dBm T
A
= 25°CI
F
= 60 mA dc
Fiber Cable
-10.5 -3.5 peak
NA = 0.3
-8.0 -4.5 -2.1 T
A
= 25°CI
F
= 100 mA dc
-9.6 -1.5
200 µm HCS PT200 -5.2 -3.7 +0.8 dBm T
A
= 25°CI
F
= 60 mA dc
Fiber Cable
-6.2 +1.8 peak
NA = 0.37
-3.7 -1.7 +3.2 T
A
= 25°CI
F
= 100 mA dc
-5.3 +3.8
14X2/14X4 Dynamic Characteristics
Parameter Symbol Min. Typ.
[2]
Max. Units Conditions Reference
Rise Time, Fall Time t
r
, t
f
4.0 6.5 nsec I
F
= 60 mA Note 7
(10% to 90%) No Pre-bias Figure 12
Rise Time, Fall Time t
r
, t
f
3.0 nsec I
F
= 10 to Note 7,
(10% to 90%) 100 mA Figure 11
Pulse Width Distortion PWD 0.5 nsec Figure 11
Notes:
1. For I
FPK
> 100 mA, the time duration should not exceed 2 ns.
2. Typical data at T
A
= 25°C.
3. Thermal resistance is measured with the transmitter coupled to a connector assembly and mounted on a printed circuit board.
4. D is measured at the plane of the fiber face and defines a diameter where the optical power density is within 10 dB of the maximum.
5. P
T
is measured with a large area detector at the end of 1 meter of mode stripped cable, with an ST
®
precision ceramic ferrule (MIL-STD-83522/13)
for HFBR-1412/1414, and with an SMA 905 precision ceramic ferrule for HFBR-1402/1404.
6. When changing µW to dBm, the optical power is referenced to 1 mW (1000 µW). Optical Power P (dBm) = 10 log P (µW)/1000 µW.
7. Pre-bias is recommended if signal rate >10 MBd, see recommended drive circuit in Figure 11.
8. Pins 2, 6, and 7 are welded to the anode header connection to minimize the thermal resistance from junction to ambient. To further reduce the
thermal resistance, the anode trace should be made as large as is consistent with good RF circuit design.
9. Fiber NA is measured at the end of 2 meters of mode stripped fiber, using the far-field pattern. NA is defined as the sine of the half angle,
determined at 5% of the peak intensity point. When using other manufacturer’s fiber cable, results will vary due to differing NA values and
specification methods.
All HFBR-14XX LED transmitters are classified as IEC 825-1 Accessible Emission Limit (AEL)
Class 1 based upon the current proposed draft scheduled to go in to effect on January 1, 1997.
AEL Class 1 LED devices are considered eye safe. Contact your Avago sales representative for
more information.
CAUTION: The small junction sizes inherent to the design of these components increase the components’
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of these components to prevent damage and/or degradation which may be
induced by ESD.
