MSD1278-822MLD COILCRAFT, MSD1278-822MLD Datasheet

MSD1278-822MLD

Manufacturer Part Number

MSD1278-822MLD

Description

Manufacturer

COILCRAFT

Datasheet

1.MSD1278T.pdf (3 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MSD1278-822MLD

Manufacturer:

COILCRAF

Quantity:

500

Current page: 1 of 3
Download datasheet (233Kb)

Dimensions are in

Coupled Inductors – MSD1278T

0.308 ±0.010

0.484

12,3

7,8 ±0,25

0.197

max

5,0

inches

0.484

12,3

1 2 3

0.197

5,0

max

0.059

1,5

0.138

Dot indicates pin1

Dash number

Internal code

3,5

0.157

4,0

Recommended

Land Pattern

Specifications subject to change without notice.

Please check our website for latest information.

0.217

5,5

0.079

2,0

0.177

4,5

The MSD1278T series of coupled inductors was de-

signed for high temperature applications – up to 125°C.

The excellent coupling coefficient (k

ideal for use in SEPIC applications. In SEPIC topolo-

gies, the required inductance for each winding in a

coupled inductor is half the value needed for two sepa-

rate inductors, allowing selection of a part with lower

DCR and higher current handling.

These inductors provide high inductance, high effi-

ciency and excellent current handling in a rugged, low

cost part. They are well suited for use as VRM induc-

tors in high-current DC-DC and VRM/VRD controllers.

They can also be used as two single inductors con-

nected in series or parallel, as a common mode choke

or as a 1 : 1 transformer.

Core material Ferrite

Terminations RoHS compliant matte tin over nickel over phos

bronze. Other terminations available at additional cost.

Weight: 3.7 – 4.4 g

Ambient temperature –40°C to +125°C with Irms current, +125°C

to +165°C with derated current

Storage temperature Component: –40°C to +165°C.

Packaging: –40°C to +80°C

Winding to winding isolation 500 Vrms

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)

Failures in Time (FIT) / Mean Time Between Failures (MTBF)

38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Packaging 500/13 reel; Plastic tape: 24 mm wide, 0.4 mm thick,

16 mm pocket spacing, 8.1 mm pocket depth

PCB washing Only pure water or alcohol recommended

–

“Selecting Coupled Inductors for SEPIC Applications”

Refer to Application Note, Document 639,

Typical SEPIC schematic

Document 704-1 Revised 08/31/09

For high temperature

SEPIC applications

Document 704-1

0.94) makes it

Load

OUT

–

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