3D Model Datasheet

UA7902 Flyback Transformer

for Silicon Labs Si88xx 5kV DC-DC Converter

UA7902 was developed for use with Silicon Labs Si88xx isolated dc-dc-converter reference designs. Learn more about these miniature transformers for digital isolators.
5000 Vrms, one minute isolation (hipot), from primary to secondary
Designed to meet reinforced insulation class with 8 mm creepage and clearance.
Ultra-miniature flyback tranformer, measures only 10.0 × 17.07 × 5.97 mm
AEC-Q200 Grade 1 (−40°C to +125°C)
Low leakage inductance, only 971 nH

立即购买:

计数	单价
1	$4.13
350	$3.48
700	$3.02
1400	$2.38
2100	$2.04
4000	$1.85

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Skyworks Si88xxx 一起使用

输入电压	输出	功率	Fsw
7 V — 24 V	5 V , 0.4 A	2 W	250 kHz

规格

Electrical specifications at 25°C.

零件号 1 (Hover for schematics)	0A时的电感 (µH) 2 (公差: ±5%)	Isat (A) 3	DCR max (Ω) 4		最大漏电感 (µH) 5	匝数比	隔离电压 (Vrms) 6
零件号 1 (Hover for schematics)	0A时的电感 (µH) 2 (公差: ±5%)	Isat (A) 3	Pri	Sec	最大漏电感 (µH) 5	Pri : Sec	隔离电压 (Vrms) 6
UA7902-AL_	25.0	1.3	0.075	0.106	0.971	1 : 0.33	5000

注释

When ordering, please specify packaging code: e.g.UA7902-ALD
Inductance is for the primary, measured on an Agilent/HP 4284 at 250 kHz, 0.1 Vrms, 0 Adc.
DC current that causes an inductance drop of 30% (typ) from its value without current.
DCR for secondary is for the windings connected in parallel.
Leakage inductance measured between pins 1 and 3 at 250 kHz, 0.1Vrms, 0 Adc with all secondary pins shorted.
Isolation (hipot) measured between windings for one minute.

端子:

RoHS-compliant. 260°C compatible. RoHS tin-silver-copper (95.5/3.8/0.7) over tin over nickel over phos bronze.

包装:

D = 13″ machine ready reel. EIA-481 embossed plastic tape. 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 +160°C
Tape and reel packaging: –40°C to +80°C

最高元件温度:

+160°C

故障率（FIT）/平均故障间隔时间（MTBF）:

See FIT/MTBF Calculations

原理图

Secondary windings to be connected
in parallel on 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
700	330	100	13	38,4	32,4	32	16	4	2	5,72	0,4

一般规格

核心材料:

Ferrite

重量:

1.1 g

包装:

700 per 13″ reel Plastic tape: 32 mm wide, 0.40 mm thick, 16 mm pocket spacing, 5.72 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 to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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