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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

Forward Mode Transformers

for TI TPS23756 PoE Interface

符合RoHS
  • 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.
立即购买:
计数 单价
1 $3.80
175 $3.25
700 $2.74
1400 $2.29
2800 $2.06
5000 $1.87

对于大批量采购或非库存产品,点击这里请求报价

. 现货,可今天发货.
索取样品:

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
Sec Bias
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 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
Pri Sec Bias Pri : Sec : Bias
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
  1. Output is with the secondary windings connected in parallel. Bias winding output is 12 V, 20 mA.
  2. When ordering, please specify a packaging code: JA4667-ALD.
  3. Inductance is measured at 250 kHz, 0.2 Vrms, 0 Adc.
  4. DCR for the secondary is measured with the windings connected in parallel.
  5. Leakage inductance is for the primary and is measured with the secondary shorted.
  6. Turns ratio is with the primary windings and secondary windings connected in parallel.
  7. 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 (170 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 D instead.
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):
26,315,789 hours / 38 per billion hours, Calculated per Telcordia SR-322

原理图

ja4249s.gif

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

物理特性

ja4249d.gif

dims_inches_mm-(6).gif

卷装规格

tapereel_pl-(54).gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_c-(12).gif
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.