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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

Datasheet

YA9128-BE

Name: YA9128-BED
Brand: Coilcraft
SKU: YA9128-BED
Price: 2.07 USD
Availability: InStock

YA9128-BED

For more information and specification about the part.

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Count	Unit price
1	$4.02
350	$3.45
700	$2.07
1400	$1.70
2800	$1.38
5000	$1.27

For high volume or non-stock items, request a quote.

Termination

E = Tin-silver-copper over tin over nickel

Packaging

D = 13" machine-ready reel

. in stock, ready to ship today.

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Typical Application

Works with flyback applications

Input Voltage	Output	Power	Fsw
18 V — 60 V	24 V , 0.25 A	6 W	150 kHz

Specifications

Electrical specifications at 25°C.

18 – 60 V input

Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Isat (A) 2	DCR max (Ω)		Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Isat (A) 2	Pri	Sec	Leakage Inductance max (µH) 3	Pri : Sec	Isolation Voltage (Vrms) 4
YA9128-BED	40	2.3	0.095	0.260	0.350	1 : 1.375	1500

Notes

Inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 0 Adc.
Isat: DC current that causes the primary inductance drop of 30% (typ) from its value without current.
Leakage inductance is for the primary winding with the secondary windings shorted.
Isolation (hipot) measured between windings for one minute.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronzes.

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape (350 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

−40°C to +85°C

Storage temperature range:

Component: −40°C to +125°C
Tape and reel packaging: −40°C to +80°C

Maximum part temperature:

+125°C (Ambient + temperature rise)

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

See FIT/MTBF Calculations

Performance curves

L vs Current

YA9123, YA9124, YA9125

L vs Current

YA9126, YA9127, YA9128

Schematics

YA9124, YA9125, YA9127, YA9128*

*Connect pin 1 to 2 and pin 3 to 4 on the PC board

YA9123, YA9126**

**Connect pin 1 to 2, 3 to 4, 5 to 6, and pin 7 to 8 on the PC board

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
300	330	100	13	30,4	24,4	24	16	4	2	10,35	0,5

General specification

Core Material:

Ferrite

Weight:

2.65 – 2.75 g

Packaging:

350/13″ reel Plastic tape: 24 mm wide, 0.50 mm thick, 16 mm pocket spacing, 10.35 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info .

YA9128-BE

YA9128-BED

Typical Application