3D Model Datasheet

Forward Mode Transformers

for TI TPS23756 PoE Interface

Developed for use with Texas Instruments TPS23756 High Power / High Efficiency PoE Interface and DC / DC Controller.
Designed for forward topology operating at 250 kHz with an extended input voltage range of 10 – 57 V.

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零件号

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计数	单价
1	$4.03
175	$3.69
700	$3.12
1400	$2.61
2800	$2.35
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.

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零件号

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典型应用

与Texas Instruments TPS23756一起使用

零件号	输入电压	输出 1		功率	Fsw
零件号	输入电压	Sec	Bias	功率	Fsw
JA4249-CL_	10 V — 57 V	5 V , 5 A	12 V , 0.02 A	25 W	250 kHz
JA4667-AL_	10 V — 57 V	12 V , 2 A	12 V , 0.02 A	25 W	250 kHz

规格

Electrical specifications at 25°C.

零件号 2 (Hover for schematics)	最小电感 (µH) 3	DCR max (Ω) 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)	最小电感 (µH) 3	Pri	Sec	Bias	最大漏电感 (µH) 5	Pri : Sec : Bias	隔离电压 (Vrms) 7
JA4249-CL_	90	0.018	0.015	0.320	0.120	1 : 0.8 : 1.9	1500
JA4667-AL_	90	0.018	0.047	0.320	0.085	1 : 1.9 : 1.9	1500

注释

Output is with the secondary windings connected in parallel. Bias winding output is 12 V, 20 mA.
When ordering, please specify a packaging code: JA4667-ALD.
Inductance is measured at 250 kHz, 0.2 Vrms, 0 Adc.
DCR for the secondary is measured with the windings connected in parallel.
Leakage inductance is for the primary and is measured with the secondary shorted.
Turns ratio is with the primary windings and secondary windings connected in parallel.
1500 Vrms isolation from primary and bias to secondary.

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 +125°C

储存温度范围:

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

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	32	4	2	11,9	0,4

一般规格

包装:

175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 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. For other solvents, see Doc787_PCB_Washing.pdf.

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