Datasheet 3D Models

Flyback Transformers

for Texas Instruments LM25184

Five output versions optimized for typical design applications of TI's LM25184 flyback converter.
Output versions: ZA9670-BE, ZA9671-BE, ZA9672-BE, ZA9673-BE, and ZA9674-BE
Designed to operate up to 300 kHz with 4 – 42 V input
1500 Vrms, one minute isolation (hipot) between primary and secondary
AEC-Q200 Grade 3 (–40°C to +85°C)

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Count	Unit price
1	$5.45
100	$5.34
350	$4.01
700	$2.40
1000	$1.87

For high volume or non-stock items, request a quote.

Packaging

D = 13" machine-ready reel

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Typical Application

Works with Texas Instruments LM25184

Part number	Input Voltage	Output	Power	Fsw
ZA9670-BED	4 V — 42 V	3.3 V , 3.5 A	11.55 W	300 kHz
ZA9671-BED	4 V — 42 V	5 V , 2.5 A	12.5 W	300 kHz
ZA9672-BED	4 V — 42 V	12 V , 1 A	12 W	300 kHz
ZA9673-BED	4 V — 42 V	24 V , 0.5 A	12 W	300 kHz
ZA9674-BED	4 V — 42 V	48 V , 0.25 A	12 W	300 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Inductance min at 5 A (µH) 2	DCR max (Ω)		Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Inductance min at 5 A (µH) 2	Pri	Sec	Leakage Inductance max (µH) 3	Pri : Sec	Isolation Voltage (Vrms) 4
ZA9670-BED	9.0	8.1	0.0470	0.0110	0.400	1 : 0.25	1500
ZA9671-BED	9.0	8.1	0.0470	0.0145	0.250	1 : 0.33	1500
ZA9672-BED	7.0	6.3	0.0350	0.0480	0.100	1 : 1	1500
ZA9673-BED	7.0	6.3	0.0350	0.1380	0.100	1 : 2	1500
ZA9674-BED	9.0	8.1	0.0470	1.1060	0.150	1 : 3	1500

Notes

Inductance is for the primary, measured at 300 kHz, 0.1 Vrms, 0 Adc.
Minimum inductance is for the primary, measured at 300 KHz, 0.1 Vrms, 5 Adc.
Leakage Inductance is for the primary, measured with secondary windings shorted together.
1500 Vrms, one minute isolation (hipot) between primary and secondary.

Termination:

RoHS-compliant. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze. Other terminations available at additional cost.

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape (350 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

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

Maximum part temperature:

+125°C (ambient + temperature rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

*Connect pin 1 to 2, pin 3 to 4, pin 5 to 6, and pin 7 to 8 on the PC board

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
350	330	100	13	30,4	24,4	24	16	4	2	10,4	0,5

General specification

Core Material:

Ferrite

Weight:

2.73 – 2.8 g

Packaging:

350/13″ reel Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 10.4 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

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

Resistance to soldering heat:

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

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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Flyback Transformers

for Texas Instruments LM25184

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Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning