3D Model Datasheet

RA7040-AL

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Typical Application

Works with Texas Instruments UCC2897

Input Voltage	Output 1		Power
Input Voltage	Sec	Aux	Power
48 V — 60 V	12 V , 13 A	12 V	150 W

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±20%)	DCR max (mΩ) 3			Leakage Inductance max (µH) 4	Turns Ratio	Volt-time product (V-µs) 5	Isolation Voltage (Vrms) 6
Part number (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±20%)	Pri	Sec	Aux	Leakage Inductance max (µH) 4	Pri : Sec : Aux	Volt-time product (V-µs) 5	Isolation Voltage (Vrms) 6
RA7040-AL	50	10.75	4.25	61.10	0.55	1 : 0.5 : 0.5	100	1500

Notes

Output is of the secondary winding frmo pins 11 – 8. Output of the aux winding is 12 V.
Inductance is for the primary, measured on Agilent/HP 4284A at 200 kHz, 0.5 Vrms, 0 Adc with primary windings connected in parallel.
DCR for the primary is measured with the windings connected in parallel. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage Inductance is for the primary, measured at 200 kHz, 0.5 Vrms, 0 Adc with primary windings connected in parallel and all secondary pins shorted.
Volt-time product is based on primary windings connected in parallel.
1500 Vrms, one minute isolation hipot) from primary to secondary.

Termination:

RoHS-compliant 260°C compatible. Matte tin over nickel over brass.

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:

+165°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Schematics

Primary windings to be connected in parallel on the PC board.

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

12.7 g

Packaging:

36 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

RA7040-AL

Typical Application

Specifications

Termination:

Schematics

Physical characteristics

General specification

Soldering/Washing

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RA7040-AL

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Typical Application

Specifications

Termination:

Schematics

Physical characteristics

General specification

Soldering/Washing

Related product series

Magnetics

B0860-CL Planar Transformer

C1539-AL Planar Transformer

DA2025-AL Planar Transformer

HA3648-BL Planar Transformer

HA4000-AL Planar Transformer

JA4309 Planar Transformer

Magnetics for

B0853-AL SMT Planar Transformer

A9786-AL Planar Magnetics

MA5519-AL Planar Transformer

NA5738-DL SMT Planar Transformer

NA5871-AL 800 W Planar Transformer

PA6605-AL Planar Transformer

PL140 Series

PL160 Series

PL300 Series

RA6992-BL SMT Planar Transformer

RA6998 Forward Mode Planar Transformer

RA6999-AL Forward Mode Transformer

YA9215-AL 50 W Resonant Transformer

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