Datasheet 3D Model

CU8758-AL Flyback Transformer

for Maxim MAX17597

Mounted on Maxim MAX17597 Evaluation Kit

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Typical Application

Works with Maxim MAX17597

Input Voltage	Output	Power	Fsw
18 V — 36 V	24 V , 0.83 A	20 W	250 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Inductance min at 3.3 A (µH)	DCR max		Leakage Inductance max (nH) 2	Turns Ratio	Isolation Voltage (Vrms) 3
Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±10%)	Inductance min at 3.3 A (µH)	Pri (Ω)	Sec (mΩ)	Leakage Inductance max (nH) 2	Pri : Sec	Isolation Voltage (Vrms) 3
CU8758-AL	33	26	0.030	41.0	800	1 : 1.85	1500

Notes

Inductance is for the primary, measured at 200 kHz, 0.1 Vrms.
Leakage inductance is for the primary winding with the secondary winding shorted.
1500 Vrms, one minute isolation (hipot)between primary and secondary.

Termination:

RoHS-compliant. 260°C compatible. RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +125°C.
Tray packaging: –40°C to +80°C

Maximum part temperature:

135°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Schematics

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

13.4 g

Packaging:

100 parts per tray

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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