SFH 421
SFH 426
GaAlAs-IR-Lumineszenzdiode in SMT-Gehäuse
GaAlAs Infrared Emitter in SMT Package
Lead (Pb) Free Product - RoHS Compliant
SFH 421
SFH 426
Not for new design
Replacement: SFH4253 (for SFH421) / SFH4256 (for SFH426)
2013-01-16 1
Wesentliche Merkmale
• GaAIAs-LED mit sehr hohem Wirkungsgrad
• Gute Linearität (Ie = f [IF]) bei hohen Strömen
• Gleichstrom- (mit Modulation) oder
Impulsbetrieb möglich
• Hohe Zuverlässigkeit
• Hohe Impulsbelastbarkeit
• Oberflächenmontage geeignet
• Gegurtet lieferbar
•SFH 421 Gehäusegleich mit SFH 320
SFH 426 Gehäusegleich mit SFH 325
Anwendungen
• Miniaturlichtschranken für Gleich- und
Wechsellichtbetrieb
• Industrieelektronik
• „Messen/Steuern/Regeln“
• Automobiltechnik
• Sensorik
• Alarm- und Sicherungssysteme
• IR-Freiraumübertragung
Typ
Type
Bestellnummer
Ordering Code
Gehäuse
Package
SFH 421 Q65110A1218
Kathodenkennzeichnung: abgesetzte Ecke
cathode marking: bevelled edge
TOPLED®
SFH 426 Q65110A2512 SIDELED®
Features
• Very highly efficient GaAIAs-LED
• Good Linearity (Ie = f [IF]) at high currents
• DC (with modulation) or pulsed operations are
possible
• High reliability
• High pulse handling capability
• Suitable for surface mounting (SMT)
• Available on tape and reel
•SFH 421 same package as SFH 320
SFH 426 same package as SFH 325
Applications
• Miniature photointerrupters
• Industrial electronics
• For drive and control circuits
• Automotive technology
• Sensor technology
• Alarm and safety equipment
• IR free air transmission
2013-01-16 2
SFH 421, SFH 426
Grenzwerte (TA = 25 C)
Maximum Ratings
Bezeichnung
Parameter
Symbol
Symbol
Wert
Value
Einheit
Unit
Betriebs- und Lagertemperatur
Operating and storage temperature range
Top; Tstg – 40 + 100 C
Sperrspannung
Reverse voltage
VR5 V
Durchlassstrom
Forward current
IF100 mA
Stoßstrom, 10 s, D = 0
Surge current
IFSM 2.5 A
Verlustleistung
Power dissipation
Ptot 180 mW
Wärmewiderstand Sperrschicht - Umgebung bei
Montage auf FR4 Platine, Padgröße je 16 mm2
Thermal resistance junction - ambient mounted
on PC-board (FR4), padsize 16 mm2 each
Wärmewiderstand Sperrschicht - Lötstelle bei
Montage auf Metall-Block
Thermal resistance junction - soldering point,
mounted on metal block
RthJA
RthJS
450
200
K/W
K/W
SFH 421, SFH 426
2013-01-16 3
Kennwerte (TA = 25 C)
Characteristics
Bezeichnung
Parameter
Symbol
Symbol
Wert
Value
Einheit
Unit
Wellenlänge der Strahlung
Wavelength at peak emission
IF = 100 mA, tp = 20 ms
peak 880 nm
Spektrale Bandbreite bei 50% von Imax
Spectral bandwidth at 50% of Imax
IF = 100 m A
 80 nm
Abstrahlwinkel
Half angle
60 Grad
deg.
Aktive Chipfläche
Active chip area
A0.09 mm2
Abmessungen der aktiven Chipfläche
Dimensions of the active chip area
L B
L W0.3 0.3 mm²
Schaltzeiten, Ie von 10% auf 90% und von 90%
auf 10%, bei IF = 100 mA, RL = 50 
Switching times, e from 10% to 90% and from
90% to 10%, IF = 100 mA, RL = 50
tr, tf0.5 s
Kapazität
Capacitance
VR = 0 V, f = 1 MHz
Co15 pF
Durchlassspannung
Forward voltage
IF = 100 mA, tp = 20 ms
IF = 1 A, tp = 100 s
VF
VF
1.5 ( 1.8)
3.0 ( 3.8)
V
V
Sperrstrom
Reverse current
VR = 5 V
IR0.01 ( 1) A
Gesamtstrahlungsfluss
Total radiant flux
IF = 100 mA, tp = 20 ms
e23 mW
Temperaturkoeffizient von Ie bzw. e,
IF = 100 mA
Temperature coefficient of Ie or e, IF = 100 mA
TCI– 0.5 %/K
Temperaturkoeffizient von VF, IF = 100 mA
Temperature coefficient of VF, IF = 100 mA
TCV– 2 mV/K
Temperaturkoeffizient von , IF = 100 mA
Temperature coefficient of , IF = 100 mA
TC+ 0.25 nm/K
2013-01-16 4
SFH 421, SFH 426
Strahlstärke Ie in Achsrichtung
gemessen bei einem Raumwinkel = 0.01 sr
Radiant Intensity Ie in Axial Direction
at a solid angle of = 0.01 sr
Bezeichnung
Parameter
Symbol Werte
Values
Einheit
Unit
Strahlstärke
Radiant intensity
IF = 100 mA, tp = 20 ms
Ie min
Ie typ
4
7
mW/sr
mW/sr
Strahlstärke
Radiant intensity
IF = 1 A, tp = 100 s
Ie typ 48 mW/sr
SFH 421, SFH 426
2013-01-16 5
Relative Spectral Emission
Irel = f ()
Forward Current
IF = f (VF) single pulse, tp = 20 s
Radiation Characteristics Irel = f (
0
750
Ιrel
OHR00877
800 850 900 950 nm 1000
20
40
60
80
%
100
λ
10
OHR00881
F
V
-3
-2
10
-1
10
0
10
1
10
0123456V8
A
Ι
F
0
0.2
0.4
1.0
0.8
0.6
ϕ
1.0 0.8 0.6 0.4
0˚10˚20˚40˚ 30˚
OHL01660
50˚
60˚
70˚
80˚
90˚
100˚
0˚ 20˚ 40˚ 60˚ 80˚ 100˚ 120˚
Radiant Intensity
Single pulse, tp = 20 s
Permissible Pulse Handling
Capability IF = f (tp), TA = 25 C
duty cycle D = parameter
e
e 100 mA = f (IF)
10
OHR00878
Ιe
F
Ι
-3
-2
10
-1
10
0
10
1
10
2
10
0
10 10 110 210 4
mA
e
Ι
(100mA)
3
10
10
Ι
F
OHR00886
1
2
10
3
10
4
10
mA
-5
10 s
=D
F
Ι
T
DC
0.005=
D
p
t
T
t
p
p
t
0.5
0.2
0.1
0.01
0.02
0.05
10
-4
10
-3
10
-2
10
-1
10
0
10
1
10
2
Max. Permissible Forward Current
IF = f (TA)
2013-01-16 6
SFH 421, SFH 426
Maßzeichnung
Package Outlines
Maße in mm (inch) / Dimensions in mm (inch).
SFH 421
GPLY6724
0.7 (0.028)
0.9 (0.035)
1.7 (0.067)
2.1 (0.083)
0.12 (0.005)
0.18 (0.007)
0.5 (0.020)
1.1 (0.043)
3.3 (0.130)
3.7 (0.146)
0.4 (0.016)
0.6 (0.024)
2.6 (0.102)
3.0 (0.118)
2.1 (0.083)
2.3 (0.091)
Cathode marking
3.0 (0.118)
3.4 (0.134)
(2.4) (0.095)
0.1 (0.004) (typ.)
4˚±1
A
C
SFH 426
GPLY6880
(R1)
Cathode marking
Cathode Anode
(2.4 (0.094))
2.8 (0.110)
2.4 (0.094)
4.2 (0.165)
3.8 (0.150)
0.9 (0.035)
1.1 (0.043)
spacing
2.54 (0.100)
0.7 (0.028)
(2.85 (0.112))
(1.4 (0.055))
(0.3 (0.012))
3.4 (0.134)
3.8 (0.150)
3.8 (0.150)
4.2 (0.165)
(2.9 (0.114))
AC
SFH 421, SFH 426
2013-01-16 7
Empfohlenes Lötpaddesign Reflow Löten
Recommended Solder Pad Reflow Soldering
Maße in mm / Dimensions in mm.
SFH 421
4.5 (0.177)
2.6 (0.102)
1.5 (0.059)
Cu-area > 16 mm
Cu-Fläche > 16 mm
2
2
Solder resist
Lötstopplack
4.5 (0.177)
1.5 (0.059)
2.6 (0.102)
Padgeometrie für
improved heat dissipation
verbesserte Wärmeableitung
Paddesign for
SFH 426
3.7 (0.146)
1.2 (0.047)
3.0 (0.118)
Cu-area > 16 mm
Cu-Fläche > 16 mm
Paddesign
for improved
heat dissipation
Wärmeableitung
für verbesserte
Padgeometrie
Lötstopplack
Solder resist
OHLPY965
2
2
2013-01-16 8
SFH 421, SFH 426
Lötbedingungen Vorbehandlung nach JEDEC Level 2
Soldering Conditions Preconditioning acc. to JEDEC Level 2
Reflow Lötprofil für bleifreies Löten (nach J-STD-020D.01)
Reflow Soldering Profile for lead free soldering (acc. to J-STD-020D.01)
Profileigenschaften
Profile Feature
Bleifreier Aufbau / Pb-Free Assembly (SnAgCu)
Empfehlung / Recommendation Grenzwerte / Max. Ratings
Aufheizrate zum Vorwärmen*) /
Ramp-up rate to preheat*) 25 °C to 150 °C
2 K / s 3 K / s
Zeit ts von TSmin bis TSmax /
Time ts from TSmin to TSmax 150 °C to 200 °C
100 s min. 60 s max. 120 s
Aufheizrate zur Spitzentemperatur*) /
Ramp-up rate to peak*) 180 °C to TP
2 K / s 3 K / s
Liquidustemperatur TL /
Liquidus temperature TL
217 °C
Zeit tL über TL / Time tL above TL80 s max. 100 s
Spitzentemperatur TP / Peak temperature TP245 °C SFH 421: max. 260 °C
SFH 426: max. 250 °C
Verweilzeit tP innerhalb des spezifizierten
Spitzentemperaturbereichs TP - 5 K / Time tP within the
specified peak temperature range TP - 5 K
20 s min. 10 s max. 30 s
Abkühlrate*) / Ramp-down rate*) TP to 100 °C 3 K / s SFH 421: 6 K / s maximum
SFH 426: 4 K / s maximum
Zeitspanne von 25 °C bis zur Spitzentemperatur /
Time from 25 °C to peak temperature
max. 8 min.
Alle Temperaturen beziehen sich auf die Bauteilmitte, jeweils auf der Bauteiloberseite gemessen / All temperatures refer to the center of the package,
measured on the top of the package
* Steigungsberechnung T/t: t max. 5 s; erfüllt über den gesamten Temperaturbereich / slope calculation T/t: t max. 5 s; fulfillment for the whole
T-range
0
0s
OHA04525
50
100
150
200
250
300
50 100 150 200 250 300
t
T
˚C
S
t
t
P
t
T
p
240 ˚C
217 ˚C
245 ˚C
25 ˚C
L
SFH 421, SFH 426
2013-01-16 9
Wellenlöten (TTW) (nach CECC 00802)
TTW Soldering (acc. to CECC 00802)
OHLY0598
0
0
50 100 150 200 250
50
100
150
200
250
300
T
t
C
s
235 C
10 s
C... 260
1. Welle
1. wave
2. Welle
2. wave
5 K/s 2 K/s
ca 200 K/s
CC... 130100
2 K/s Zwangskühlung
forced cooling
Normalkurve
standard curve
Grenzkurven
limit curves
2013-01-16 10
SFH 421, SFH 426
Published by
OSRAM Opto Semiconductors GmbH
Wernerwerkstrasse 2, D-93049 Regensburg
www.osram-os.com
© All Rights Reserved.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved. Due to technical requirements components may contain
dangerous substances. For information on the types in question please contact our Sales Organization.
Packing
Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office.
By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing
material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs
incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose! Critical
components 1 , may only be used in life-support devices or systems 2 with the express written approval of OSRAM OS.
1 A critical component is a component usedin a life-support device or system whose failure can reasonably be expected
to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that device or system.
2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain
and sustain human life. If they fail, it is reasonable to assume that the health of the user may be endangered.