3. Epoxy meniscus may extend about 1mm (0.040”) down the leads.
Device Selection Guide
Iv (cd) @ 20mA
Part Number
HLMP-CW18-VY0xx
HLMP-CW19-VY0xx
HLMP-CW28-TW0xx
HLMP-CW29-TW0xx
HLMP-CW38-SV0xx
HLMP-CW39-SV0xx
Notes:
1. Tolerance for luminous intensity measurement is +/- 15%
2. The luminous intensity is measured on the mechanical axis of the lamp package.
3. The optical axis is closely aligned with the package mechanical axis.
4. LED light output is bright enough to cause injuries to the eyes. Precautions must be taken to prevent looking directly at the LED without proper safety
equipment.
Typ. Viewing Angle
Min.
15°
15°
23°
23°
30°
30°
4.20
4.20
2.50
2.50
1.90
1.90
Typ.
6.40
6.40
3.80
3.80
3.00
3.00
Standoff Leads
No
Yes
No
Yes
No
Yes
Package
Dimension
A
B
A
B
A
B
Part Numbering System
L M P - C W XX - X X X XX
Mechanical Option
00: Bulk
DD: Ammo Pack
Color Bin Options
0: Full color bin distribution
Maximum Intensity Bin Limit
0: No maximum intensity bin limit
Minimum Intensity Bin Limit
Refer to Device Selection Guide
Viewing Angle
18: 15 without standoffs
19: 15˚ with standoffs
28: 23˚ without standoffs
29: 23˚ with standoffs
38: 30 ˚ without standoffs
39: 30 ˚ with standoffs
Color Options
W: White
Package Options
C: T-1 3/4
2
Absolute Maximum Ratings (T
A
= 25°C)
Parameter
DC Forward Current
[1]
Peak Forward Current
[2]
Average Forward Current
Power Dissipation
LED Junction Temperature
Operating Temperature Range
Storage Temperature Range
Wave Solder Temperature
[3]
Solder Dipping Temperature
[3]
Notes:
1. Derate linearly as shown in Figure 4.
2. Duty Factor 30%, 1 KHz
3. 1.59 mm (0.060 inch) below body
Value
30
100
30
120
130
-40 to +85
-40 to +100
250 for 3 secs
260 for 5secs
Units
mA
mA
mA
mW
°C
°C
°C
°C
°C
Electrical/Optical Characteristics (T
A
= 25
o
C)
Parameters
Forward voltage
Capacitance
Reverse Voltage
[1]
Thermal resistance
Viewing Angle
[2]
CW18/CW19
CW28/CW29
CW38/CW39
Symbol
V
F
C
V
R
Rθ
J-PIN
2θ
1/2
15
23
30
0.31
0.32
I
F
= 20 mA
Minimum Typical
3.4
53
0.6
240
Maximum Units
4.0
V
pF
V
o
C/W
Test Condition
I
F
= 20 mA
V
F
=0, f=1 MHz
I
R
= 10
µA
LED Junction to cathode lead
I
F
= 20 mA
Degree
Chromaticity Coordinate
[3]
X
Y
Notes:
2. 2
θ
1/2
is the off-axis angle where the luminous intensity is ½ the on axis intensity
1. The reverse voltage of the product is equivalent to the forward voltage of the protective chip at I
R
= 10
µ
A
3. The chromaticity coordinates are derived from the CIE 1931 Chromaticity Diagram and represent the perceived color of the device.
便携式医疗设备的特殊性决定了它们应该是对用户友好的、必须工作在无菌环境下，并且空间占用小、耗能低。 同时，便携式医疗设备还需要足够的计算能力以便处理医疗数据，能够连接到无线或有线接口以便记录和发送数据。从设计人员的角度考虑，上述需求需要低功耗的单片机（MCU）和数字信号控制器（Digital Signal Controller，DSC）。 正是有了嵌入式处理器，设计人员才有可能设...[详细]
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