78F390J-RC Bourns 78F390J-RC is a 39 µH fixed inductor with a 240 mA current rating and 1.7 Ohm maximum DCR. It features a ferrite core, unshielded construction, and an axial through-hole package.
Mfr Part #:

78F390J-RC

Available from 1 distributors
Mfr Name: Bourns
Bourns
Bourns 78F390J-RC is a 39 µH fixed inductor with a 240 mA current rating and 1.7 Ohm maximum DCR. It features a ferrite core, unshielded construction, and an axial through-hole package.
Total Stock: 760 pcs
$ Price Range: $0.10 - $0.22

78F390J-RC Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
760 pcs
760 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

78F390J-RC Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current Rating (Amps)
DC Resistance (DCR)
Dielectric Strength
Frequency
Inductance
Lead Style
Material
Mounting Type
Operating Temperature
Q @ Freq
SVHC Present
Shielding
Standard Package Quantity
Storage Temperature
Tape & Reel
Temperature Rise
Tolerance
Type

78F390J-RC Description

Short technical summary and product information.

The Bourns 78F390J-RC is a fixed inductor from the 78F series, offering an inductance of 39 µH with a tolerance of ±5%. It is rated for a maximum current of 240 mA and has a maximum DC resistance (DCR) of 1.7 Ohms. The component is designed with a ferrite core and is unshielded, making it suitable for general-purpose RF choke applications.

 

This inductor provides a minimum Q factor of 50 at 2.5 MHz and a minimum self-resonant frequency (SRF) of 9.5 MHz. It is housed in an axial package for through-hole mounting, with dimensions of 0.110" diameter by 0.280" length (2.79 mm x 7.11 mm). The operating temperature range is -55°C to 105°C, with a typical temperature rise of 35°C at rated current.

 

The 78F390J-RC is RoHS3 compliant and has an MSL rating of 1 (Unlimited). It is commonly used in DC/DC converters, power supplies, and general-purpose RF choke circuits.

78F390J-RC Quick Information

Product Type: Fixed Inductor
Series: 78F
Canonical Name: Bourns 78F390J-RC Fixed Inductor
Subcategory: RF Choke

78F390J-RC Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

78F390J-RC Estimated Pricing

Qty Low High
1+ $0.22 $0.22
10+ $0.18 $0.18
25+ $0.16 $0.16
100+ $0.15 $0.15
250+ $0.13 $0.13
1,000+ $0.12 $0.12
2,500+ $0.11 $0.11
5,000+ $0.10 $0.10
10,000+ $0.10 $0.10

Estimated market price range - modelled values for guidance only, not live distributor offers.

78F390J-RC Features

  • Ferrite core RF choke inductor.
  • 39 µH inductance with ±5% tolerance.
  • Rated for 240 mA maximum current.
  • Axial through-hole package for mounting.
  • RoHS3 compliant and MSL 1 rated.

78F390J-RC Applications

  • Used in DC/DC converter circuits.
  • Suitable for power supply filtering.
  • Ideal for general RF choke applications.

78F390J-RC FAQs

7 frequently asked questions generated from this part’s specifications.
What is the inductance of the Bourns 78F390J-RC?

The inductance is 39 µH with a tolerance of ±5%.

What is the current rating of this inductor?

The maximum current rating is 240 mA.

What is the DC resistance (DCR) of the 78F390J-RC?

The maximum DC resistance is 1.7 Ohms.

What is the self-resonant frequency (SRF) of this part?

The minimum self-resonant frequency is 9.5 MHz.

What is the package type for the 78F390J-RC?

The package is axial for through-hole mounting.

What is the operating temperature range?

The operating temperature range is -55°C to 105°C.

Is the Bourns 78F390J-RC RoHS compliant?

Yes, it is RoHS3 compliant.

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