HA3778_12 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Shielded Power Inductor

Document 684-1
Shielded Power Inductor ForNSCLM315x
simple switcher^®
Part
 _number1
HA3778-AL_
  _Inductance2 _{DCR ±8%}   _{SRF typ}3   _Isat4  _Irms5
±20% (µH) (mOhm) (MHz) (A) (A)
1.65
2.53
55
17 20
1. When ordering, please specify termination and packaging codes:
HA3778-ALC
Termination: L =
RoHS compliant tin-silver over copper.
Special order: T = RoHS tin-silver-copper
(95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (100 parts per full reel).
B = Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter C instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (500 parts per
full reel).
2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc using a Coilcraft
SMD-A fixture in an Agilent/HP 4284A LCR meter or equivalent.
3. SRF measured on an Agilent/HP 8753ES.
4. DC current at which the inductance drops 30% (typ) from its value with-
out current.
5. Current that causes a 40°C temperature rise from 25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
• Designed specifically for National Semiconductor LM315x
SIMPLE SWITCHER^® Controllers for applications with output
current up to 12 A.
• L1 on NSC Demonstration Board LM3152-3.3
• Soft saturation makes it ideal for use in multi-phase VRM/VRD
regulators and high current/high frequency DC/DC converters.
• Flat wire construction for low DCR
• The materials used eliminate all thermal aging issues
Core material  Powdered iron
Terminations  RoHS compliant tin-silver over copper. Other termina-
tions available at additional cost.
Weight  3.44 g
Ambient temperature  –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
Storage temperature  Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Mean Time Between Failures (MTBF)  26,315,789 hours
Packaging  100/7″ reel; 500/13″ reel  Plastic tape:  24 mm wide,
0.4 mm thick, 16 mm pocket spacing, 7.5 mm pocket depth
PCB washing  Only pure water or alcohol recommended
Dimensions are in
inches
mm
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UK [phone] [e-mail]
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China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 684-1  Revised 09/16/11
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.