Datasheet 3D Model

MA5281 Flyback Transformer

for TI TPS23756 15 W PoE Converter

Flyback for Texas Instruments TPS23756 High Power/High Efficiency PoE Interface and DC/DC Controller

立即购买:

计数	单价
1	$5.35
100	$4.58
250	$3.99
500	$3.48
1000	$2.70
2500	$2.33
5000	$2.14

对于大批量采购或非库存产品，点击这里请求报价。

Packaging

D = 13" machine-ready reel

. 现货，可今天发货.

索取样品:

典型应用

与Texas Instruments TPS23756一起使用

输入电压	输出 1		功率	Fsw
输入电压	Sec	Bias	功率	Fsw
10 V — 57 V	12 V , 1.25 A	11.5 V , 0.015 A	15 W	250 kHz

规格

Electrical specifications at 25°C.

零件号 2 (Hover for schematics)	0A时的电感 (µH) 3 (公差: ±10%)	最小电感 2.8 A (µH)	DCR max 4				最大漏电感 (µH) 5	匝数比 6	隔离电压 (Vrms) 7
零件号 2 (Hover for schematics)	0A时的电感 (µH) 3 (公差: ±10%)	最小电感 2.8 A (µH)	Pri (Ω)	Sec (mΩ)	Drive (mΩ)	Bias (mΩ)	最大漏电感 (µH) 5	Pri : Sec : Drive : Bias	隔离电压 (Vrms) 7
MA5281-BLD	45.0	40.5	0.060	58.000	323.000	370.000	0.550	1 : 0.57 : 0.52 : 0.57	1500

注释

Output of the secondary is with the windings connected in parallel. Aux winding output is 2.5 V, 20 mA.
When ordering, please specify packaging code: e.g. MA5281-BLD
Inductance is for the primary, measured at 250 kHz, 0.1 Vrms, 0 Adc.
DCR for the primary and the secondary is measured with the windings connected in parallel. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage inductance is for the primary, measured with the windings connected in parallel with the secondary windings shorted.
Turns ratios are with the primary windings and the secondary windings connected in parallel.
1500 Vrms, one minute isolation from primary and bias to secondary windings.

端子:

RoHS-compliant. 260°C compatible. Tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

包装:

D = 13″ machine ready reel. EIA-481 embossed plastic tape (175 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.

环境

环境:

符合RoHS

环境温度范围:

–40°C to +85°C

储存温度范围:

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

最高元件温度:

+125°C (Ambient + temperature rise)

故障率（FIT）/平均故障间隔时间（MTBF）:

See FIT/MTBF Calculations

原理图

Primary windings and secondary windings
to be connected in parallel on the PC board.

物理特性

卷装规格

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
175	330	100	13	50,4	44,4	44	28	4	2	11,9	0,4

一般规格

核心材料:

Ferrite

重量:

11.3 g

包装:

175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 11.9 mm pocket depth

焊接/清洗

湿气敏感度等级（MSL）:

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

抗焊接热:

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

焊接之前，请参阅焊接线艺元件。

PCB清洗:

Tested with pure water or alcohol only. More info.

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