C1495-AL [COILCRAFT]

Flyback Transformers; 反激式变压器


型号：	C1495-AL
厂家：	Coilcraft lnc.
描述：	Flyback Transformers 反激式变压器变压器 SMPS变压器
文件：	总1页 (文件大小：186K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Document 445

For National Semiconductor

Flyback Transformers LM5070 PoE Interface – 13 Watt

• Flyback transformers for 13 W PoE applications

• Designed to operate in continuous mode at 250 kHz with

an input of 36 – 72 Vdc

• 1500 Vrms isolation from primary and bias to secondary

Core material Ferrite

Terminations RoHS tin-silver over tin over nickel over phos

bronze. Other terminations available at additional cost.

Weight 6.15 g

Ambient temperature –40°C to +85°C

Storage temperature Component: –40°C to +85°C.

Packaging: –40°C to +80°C

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 175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm

thick, 28 mm pocket spacing, 12.93 mm pocket depth

PCB washing Only pure water or alcohol recommended

Inductance Inductance

Leakage

DCR max (Ohms)⁴

Turnsratio⁶

pri :sec pri :bias (A)

Part

at 0 A²

at Ipk³

inductance

Ipk³

number¹±10% (µH)

min (µH)

pri

bias

sec

max (µH)⁵

Output⁷

C1495-AL_

C1585-AL_

C1586-AL_

127

114.3

0.255

0.222

0.199

0.310 0.024

0.348 0.039

0.308 0.129

1.25

0.950

0.650

1 : 0.166

1 : 0.25

1 : 0.50

1.0

3.3 V, 4.0 A

5.0 V, 2.6 A

1.0 12 V, 1.08 A

1. When ordering, please specify packaging code:

2. Inductance is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc.

3. Ipk is peak primary current drawn at minimum input voltage.

4. DCR for the secondary is per winding.

5. Leakage inductance measured between pins 3 and 4 with all other pins

shorted.

C1586-ALD

Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic

tape (175 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.

6. Turns ratio is with the secondary windings connected in parallel.

7. Output of the secondary is with the windings connected in parallel. Bias

winding output is 12 V, 20 mA.

8. Electrical specifications at 25°C.

Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Dot above pin1

0.500

12,70

max

0.004/0,10

0.039

1,00

0.699

17,75

max

Pri

Sec

0.050

1,27

0.028

0,70

0.512

13,00

0.080

2,03

0.590

14,99

Bias

0.530

13,46

Recommended

Land Pattern

max

Secondary windings to be connected

in parallel on the PC board

0.098

2,50

0.098

2,50

Specifications subject to change without notice.

Please check our website for latest information.

Document445 Revised10/29/08

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