RA7338 Series

Power Inductor for Microchip 1600W Bus Balancer

Coilcraft AEC-Q200 Grade-1 RA7338 Series power inductors are ideal for automotive applications and other high-temperature environments. RA7338 Series are designed for high-efficiency power supplies requiring high current and high inductance.

Developed for Microchip 1600W Bus Balancer Reference Design
Flat wire windings provide extremely low DC and AC resistance.
Low loss ferrite cores provide flat L vs I
Magnetic shielding to minimize EMI
Vertical (TH) mounting for rugged board attachment
Shield has solderable tabs for additional mounting stability
AEC-Q200 Grade 1 (−40°C to +125°C)

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Count	Unit price
1	$14.10
250	$12.10
500	$10.50
1000	$9.14
2500	$7.84
5000	$7.18

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

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Specifications

Electrical specifications at 25°C.

Part number	Inductance (µH) 1 (Tolerance: ±10%)		DCR (mΩ) 2		SRF typ (MHz) 3	Isat (A) 4			Irms (A) 5
Part number	min	max	typ	max	SRF typ (MHz) 3	10% drop	20% drop	30% drop	20°C rise	40°C rise
RA7338-AE	18	24	0.68	0.75	9.3	19.0	22.0	24.0	34.0	44.5

Notes

Inductance measured at 100 kHz, 0.1 Vrms, using an Agilent/HP 4192A LCR meter or equivalent.
DCR measured at 25°C on a Keithley 580 micro-ohmmeter or equivalent. For other operating temperatures, use this DCR at Temperature calculator.
SRF measured using an Agilent/HP 8753ES network analyzer.
Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
Irms: Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.

Termination:

RoHS compliant tin-silver over copper.

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C with Irms current

Storage temperature range:

Component: –40°C to +165°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

Performance curves

Inductance vs Current

Inductance vs Frequency

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

109 g

Packaging:

9 parts per tray

Washing

Moisture Sensitivity Level (MSL):

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

PCB Washing:

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

RA7338 Series

Power Inductor for Microchip 1600W Bus Balancer