1A239 Datasheet, PDF (1/10 Pages) Mitel Networks Corporation – High-Performance LED(Datacom, General Purpose)

PRODUCT INFORMATION
840nm
1A239
High-Performance LED
Datacom, General Purpose
This device is designed for Ethernet
and general applications and offers an
excellent price/performance ratio for
cost-effective solutions. Since it oper-
ates at low drive current, it generates
minimal heat — reducing cooling
requirements in systems employing
large numbers of LEDs.
Optical and Electrical Characteristics (25°C Case Temperature)
PARAMETER
Fiber-Coupled Power
(Fig.1, 2,& 3) (Table 1)
SYMBOL MIN. TYP. MAX. UNIT
P_fiber 50 90
␮W
TEST CONDITION
I_F =50 mA
(Note 1,2)
Fiber:
50/125␮m
Rise and Fall Time
t_r, t_f
(10-90%)
Bandwidth
f_c
(3dBel)
7 10 ns I_F =50 mA
(no bias)
50
MHz I_F =50 mA
Graded
Index
NA= 0.20
Peak Wavelength
␭_p 820 840 860 nm I_F =50 mA
Spectral Width (FWHM) ⌬␭
50
nm I_F =50 mA
Forward Voltage (Fig.5)
V_F
Reverse Current
I_R
1.8 2.0 V
20 ␮A
I_F =50 mA
V_R=1V
Capacitance
C
250
pF V_R= 0V, f=1 MHz
Note 1: Measured at the exit of 100 meters of fiber.
Note 2: 1A239A version with Fiber-Coupled Power > 80 ␮W available on request.
Ø4.7
Ø1.5
0.6
3.7
14
0.4
CASE
CATHODE
ANODE
2.5
5.4
BOTTOM VIEW
The diode chip is isolated from the case.
TO-46 Package With Lens
Absolute Maximum Ratings
PARAMETER
Storage Temperature
Operating Temperature (derating: Fig.4)
Electrical Power Dissipation (derating: Fig.4)
Continuous Forward Current (fр10 kHz)
Peak Forward Current (duty cycleр50%, fу1 MHz)
Reverse Voltage
Soldering Temperature (2mm from the case for 10 sec)
SYMBOL
T_stg
Top
P_tot
I_F
I_FRM
V_R
T_sld
LIMIT
-55 to +125ЊC
-55 to +125ЊC
130 mW
60 mA
100 mA
1.5 V
260ЊC
Thermal Characteristics
PARAMETER
SYMBOL MIN. TYP. MAX.
Thermal Resistance - Infinite Heat Sink R_thjc
300
Thermal Resistance - No Heat Sink
R_thja
Temperature Coefficient - Optical Power dP/dT_j
600
-0.4
Temperature Coefficient -Wavelength d␭ /dT_j
0.3
UNIT
ЊC/W
ЊC/W
%/ЊC
nm/ЊC
11960.11 & .12 1996-01-23
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