
 
Infrared Emitter (850 nm)
Version 1.5
SFH 4550
Ordering Information
Features:


!"###"
$%%&'#(##)#*+#,
Applications
+#)
##
-#)"
-.#)#
Notes
/#/#0#%)#"))##%&#)
)&1+##+"2+)#))/##%)%###"
/)+#%3453672
Type: Radiant Intensity Ordering Code
89:;
IF= 100 mA, tp= 20 ms
-<655 '=, >5?77
-<655564'$, '=, >5?47
-<6559<9 222 >5?7754
-<655<9 222 >5?
Note: Measured at a solid angle of Ω = 0.001 sr

Version 1.5 SFH 4550
Maximum Ratings '@?A5 3,
Characteristics '@?A5 3,
Parameter Symbol Values Unit
B/###/#+ @/C@# 6222 3
D%%# !D5 !
<)+# < ?
-+)+#
'#/EF0A,
<-G ?
)+/# ## 4 9
-##%#
'))2#?-:-?:H3H-IG,
!- .!
@#)J+)#&#,page 8 D#H? 65 K:9
Parameter Symbol Values Unit
.%#
'<A?0#/A,
'#"/, L/. 4 
3#%#
'<A?0#/A,
'#"/, L)# 45 
-/)#&##5MN
'<A?0#/A,
'#"/, OL  
 '#"/, P 
)#%)/ '#"/, N9 2N2 N

D#'MMN,
'<A?0DA5Q,
'#"/, #0# 
<%#
'<A?0#/A,
'#"/'N,, !<25'E24, !
<%#
'<A?0#/AF,
'#"/'N,, !<26'E, !
D%)+#
'!DA5!,
D#
%/#
R?
@##+N
'<A?0#/A,
'#"/, S7 9
@/#+))#S
'<A?0#/A,
'#"/, @325 M:K
@/#+))#!<
'<A?0#/A,
'#"/, @3!27 !:K
@/#+))#%#
'<A?0#/A,
'#"/, @3L2 :K
Version 1.5 SFH 4550

Grouping '@?A5 3,
Group Min Radiant Intensity Max Radiant Intensity Typ Radiant Intensity
IF= 100 mA, tp= 20 ms IF= 100 mA, tp= 20 ms IF = 1 A, tp = 25 µs
089:; 0N89:; 0#"/89:;
-<6559  5 75
-<655<9   
-<655T9   
Note: Measured at a solid angle of Ω = 0.001 sr
Only one group in one packing unit (variation lower 2:1).
Relative Spectral Emission ,page 8
Irel = f(λ), TA = 25°C
Radiant Intensity ,page 8
Ie / Ie(100 mA) = f(IF), single pulse, tp = 25 µs,
TA= 25°C
700
0nm
%
OHF04132
20
40
60
80
100
950750 800 850
I
rel
λ
OHL01715
10-3 mA
101
0
10
5
5
10-1
-2
5
10
e
e (100 mA)
I
I
I
F
0
10 1
10 2
10 3
105 5
 6
Version 1.5 SFH 4550
Max. Permissible Forward Current
IF, max = f(TA), RthJA = 450 K / W
Forward Current ,page 8
IF = f(VF), single pulse, tp = 100 µs, TA= 25°C
Permissible Pulse Handling Capability
IF = f(tp), TA = 25 °C, duty cycle D = parameter
Permissible Pulse Handling Capability
IF = f(tp), TA = 85 °C, duty cycle D = parameter
T
OHR00880
0
F
Ι
0 20 40 60 80 100˚C
mA
25
50
75
100
125
OHL01713
F
I
10-4 0.5 1 1.5 2 2.5 V 3
100
A
0
F
V
-1
10
5
5
10-2
-3
5
10
0.05
210-1-2-3-4-5 1010 1010 10
t
p
10 10s10
0
0.1
0.005
0.02
0.01
D
=
T
t
A
I
F
D
=
I
P
T
F
P
t
OHF05438
0.2
0.5
1
0.033
0.2
0.4
0.6
0.8
1.0
1.2
210-1-2-3-4-5 1010 1010 10
t
p
10 10s10
0
T
t
A
I
F
D
=
I
P
T
F
P
t
OHF05587
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.5
0.01
0.05
0.1
0.2
0.02
0.005
D
=
Version 1.5 SFH 4550
 5
Radiation Characteristics ,page 8
Irel = f(ϕ), TA= 25°C
Package Outline
Dimensions in mm (inch).
Package
5mm Radial (T 1 ¾), Epoxy
0
0.2
0.4
1.0
0.8
0.6
ϕ
1.0 0.8 0.6 0.4
10˚20˚40˚ 30˚ OHL01718
50˚
60˚
70˚
80˚
90˚
100˚ 20˚ 40˚ 60˚ 80˚ 100˚ 120˚

Version 1.5 SFH 4550
Approximate Weight:
0.3 g
Note
Packing information is available on the internet (online product catalog).
Recommended Solder Pad
Dimensions in mm.
Note:
pad 1: cathode
Version 1.5 SFH 4550
 7
TTW Soldering
IEC-61760-1 TTW
Disclaimer
+/%)")/)%#&###+2
Attention please!
@#)&##"/)/##&)+))##)2
@%"##)%2+##))*+#)/#")#
++&#)2
<###"/*+#/)#)#+-B1#2
/#0/###%###2
Packing
+#)")/#.#"+29)/"+U##+)#"+#)2
I"##./).#&).0##2V++#&#)##/#2</).
####+#++#)#&#))/#0%#%)"+"
)#)+2
Components used in life-support devices or systems must be expressly authorized for such purpose!
3#) )/#W " " & +  +//# %)WW  "# # # N/ ## //% 
B-D?GB-2
W, ? )#) )/#  )/# + +//# %)  "#  + ) &" &
N/)##)+#+##+//#%)"#0#)###"#)#%##
%)"#2
WW,  +//#%)  "#  # ', # & /#  # + &"0 '&, # +//# :
#+#+2#"0#&#+######+"&
2
0
0s
OHA04645
50
100
150
200
250
300
t
T
˚C
235 ˚C - 260 ˚C
First wave
20 40 60 80 100 120 140 160 180 200 220 240
Second wave
10 s max., max. contact time 5 s per wave
Preheating
T
100 ˚C
120 ˚C
130 ˚C
Typical
Cooling
ca. 3.5 K/s typical
ca. 2 K/s
ca. 5 K/s
Continuous line: typical process
Dotted line: process limits
< 150 K
 4
Version 1.5 SFH 4550
Glossary
, Thermal resistance: J+)#&#0+#3&'<D6,0/1)
, Typical Values: + # # /) )#  # +)#+ /)  0 # #"/) # 
))+# )#  #)) /# ) " )# ###) +2 @  # )"
)/##)#+/#)/+)#0))+##"/)#))+#
)###"/)))##)2*+#022&)+#))/%#0##"/2#
&)#+#"+##)2

Version 1.5 SFH 4550
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