744877004 Wurth Electronics Inc, 744877004 Datasheet
744877004
Manufacturer Part Number
744877004
Description
COUPLED INDUCTOR SEPIC/CUK 4.7UH
Manufacturer
Wurth Electronics Inc
Series
WE-DDr
Datasheet
1.744877004.pdf
(3 pages)
Specifications of 744877004
Inductance Per Coil
4.7µH
Number Of Coils
2
Current
1.55A
Tolerance
±20%
Inductance - Connected In Series
18.8µH
Inductance - Connected In Parallel
4.7µH
Dc Resistance (dcr)
64.00 mOhm Max
Package / Case
0.287" L x 0.287" W x 0.189" H (7.30mm x 7.30mm x 4.80mm)
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
732-2311-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
744877004
Manufacturer:
WURTH/伍尔特
Quantity:
20 000
..................................................................................
...............................................
Kunde / customer :
Artikelnummer / part number :
Bezeichnung :
description :
Induktivität (je Wicklg.) /
inductance (each wdg.)
DC-Widerstand (je Wicklg.) /
DC-resistance (each wdg)
DC-Widerstand (je Wicklg.) /
DC-resistance (each wdg)
Nennstrom (je Wicklg.)/
rated Current (each wdg.)
Sättigungsstrom (je Wicklg.) /
saturation current (each wdg.)
Eigenres.-Frequenz /
self-res.-fequency
Nennspannung /
rated voltage
Freigabe erteilt / general release:
A
B
D
F
HP 4274 A für/for L und/and Q
HP 34401 A für/for I
Basismaterial / base material:
Draht / wire:
Eigenschaften / properties
Mechanische Abmessungen / dimensions:
Werkstoffe & Zulassungen / material & approvals:
Elektrische Eigenschaften / electrical properties:
Prüfgeräte / test equipment:
Geprüft / checked
A
Datum / date
D-74638 Waldenburg · Max-Eyth-Strasse 1 - 3 · Germany · Telefon (+49) (0) 7942 - 945 - 0 · Telefax (+49) (0) 7942 - 945 - 400
DC
und/and R
Spezifikation für Freigabe / specification for release
A
DOPPELDROSSEL WE-DD
POWER-CHOKE WE-DD
Testbedingungen /
DC
test conditions
1 kHz / 0,25V
∆L/L = -10%
∆T = 40 K
B
Würth Elektronik eiSos GmbH & Co.KG
744877004
Ferrit/ ferrite
2 SFBW; 155°C
R
R
I
L
N1,
SRF
U
DC1,2
DC1,2
I
1,
sat
DC
L
I
N2
2
http://www.we-online.com
..................................................................................
..................................................
Kunde / customer
2
Würth Elektronik
1
Wert / value
0,052
0,064
Unterschrift / signature
Kontrolliert / approved
1,55
3,30
4,7
42
80
D
C
3
4
LF
Einheit / unit
E
G
Betriebstemperatur / operating temperature: -40°C - + 125°C
Umgebungstemp. / ambient temperature:
It is recommended that the temperature of the part does
not exceed 125°C under worst case operating conditions.
Luftfeuchtigkeit / humidity:
Umgebungstemperatur / temperature:
MHz
Testbedingungen / test conditions:
Eigenschaften / general specifications:
µH
E
Ω
Ω
A
A
V
RoHS
±20%
max.
max.
max.
Name
compliant
typ.
typ.
typ.
MST
MST
SST
SST
SST
SST
tol.
AG
AG
A
B
C
D
E
F
Start
1
4
C
2,2
3,1
2,2
Änderung / modification
Lötpad / soldering spec.:
4,8 max.
7,3 ± 0,4
1,0 ± 0,1
2,7 ± 0,1
4,0 ± 0,2
Typ M
Version 8
Version 7
Version 6
Version 5
Version 4
Version 3
Version 2
Version 1
DATUM / DATE : 2005-05-23
1,0
Finish
-40°C - + 85°C
0,8
2
3
SEITE 1 VON 3
Datum / date
L1
L2
[ mm ]
+20°C
05-05-23
05-03-29
04-10-11
04-09-15
04-04-27
04-03-12
03-06-11
02-10-30
mm
mm
mm
mm
mm
mm
33%
@@FRM 1@@
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744877004 Summary of contents
Page 1
... Werkstoffe & Zulassungen / material & approvals: Basismaterial / base material: Draht / wire: Freigabe erteilt / general release: .................................................................................. Datum / date ............................................... Geprüft / checked D-74638 Waldenburg · Max-Eyth-Strasse · Germany · Telefon (+49) (0) 7942 - 945 - 0 · Telefax (+49) (0) 7942 - 945 - 400 744877004 Wert / value Einheit / unit ...
Page 2
... Freigabe erteilt / general release: .................................................................................. Datum / date ............................................... Geprüft / checked D-74638 Waldenburg · Max-Eyth-Strasse · Germany · Telefon (+49) (0) 7942 - 945 - 0 · Telefax (+49) (0) 7942 - 945 - 400 744877004 LF RoHS Induktivität vs Strom (typ.) / Inductance vs Current (typ.) 2,0 3,0 4,0 Current (A) Kunde / customer ...
Page 3
... It is essential to give consideration when to install a protective circuit at the design stage. D-74638 Waldenburg · Max-Eyth-Strasse · Germany · Telefon (+49) (0) 7942 - 945 - 0 · Telefax (+49) (0) 7942 - 945 - 400 744877004 LF ...