Equivalent & Substitute Parts Reference for IRF36ER331K

Part Overview

The Vishay Dale IRF36ER331K is a fixed axial inductor featuring a 330 µH inductance, 137 mA current rating, and a 6.4 Ohm maximum DC resistance. The part belongs to the IRF-36 series and is supplied in through-hole, unshielded configuration with ferrite core material. It is currently listed as active and ROHS3 compliant. The need to identify substitute models arises primarily to maintain supply continuity and ensure compatibility when sourcing alternate components.

Key Parameters

Part Number	Inductance	Tolerance	Current Rating (Amps)	DC Resistance (DCR)	Core Material	Shielding	Mounting Type	Package / Case	Operating Temperature	RoHS Status	Frequency - Self Resonant	Q @ Freq	Inductance Frequency - Test	Size / Dimension	Product Status
IRF36ER331K	330 µH	±10%	137 mA	6.4 Ohm Max	Ferrite	Unshielded	Through Hole	Axial	-20°C ~ 105°C	ROHS3 Compliant	2.6 MHz	65 @ 796 kHz	796 kHz	0.157" Dia x 0.394" L	Active
77F331J-TR-RC	330 µH	±5%	137 mA	6.5 Ohm Max	Ferrite	Unshielded	Through Hole	Axial	-55°C ~ 105°C	ROHS3 Compliant	2.4 MHz	60 @ 796 kHz	796 kHz	0.157" Dia x 0.410" L	Active

Substitute Part Grouping Explanation

Substitute candidate selection is strictly determined by identical or closely matched inductance, tolerance, current rating, DC resistance, core material, shielding, mounting type, package/case dimensions, operating temperature range, RoHS status, resonant frequency, Q at test frequency, and product status. Only parts satisfying all these specified parameters qualify as legitimate substitutes for IRF36ER331K.

Parameter Comparison

Part Number	Inductance	Tolerance	Current Rating (Amps)	DC Resistance (DCR)	Core Material	Shielding	Mounting Type	Package / Case	Operating Temperature	RoHS Status	Frequency - Self Resonant	Q @ Freq	Inductance Frequency - Test	Size / Dimension	Product Status
IRF36ER331K	330 µH	±10%	137 mA	6.4 Ohm Max	Ferrite	Unshielded	Through Hole	Axial	-20°C ~ 105°C	ROHS3 Compliant	2.6 MHz	65 @ 796 kHz	796 kHz	0.157" Dia x 0.394" L	Active
77F331J-TR-RC	330 µH	±5%	137 mA	6.5 Ohm Max	Ferrite	Unshielded	Through Hole	Axial	-55°C ~ 105°C	ROHS3 Compliant	2.4 MHz	60 @ 796 kHz	796 kHz	0.157" Dia x 0.410" L	Active

Engineering Selection Recommendations

Selection between IRF36ER331K and 77F331J-TR-RC can be performed based on their active product status and ROHS3 compliance. Both parts have REACH unaffected status and MSL Not Applicable, indicating suitability for immediate use in compliant designs.

Frequently Asked Questions (FAQ)

Q: What electrical parameters are required for a direct substitute for IRF36ER331K?
A: Equivalent parts must provide matching inductance, current rating, DC resistance, core material, tolerance, shielding, mounting type, package/case, and operating temperature range.

Q: Can 77F331J-TR-RC be used in the same PCB footprint as IRF36ER331K?
A: Both components have identical 0.157" diameter and similar axial mounting configuration. Length variation is minimal.

Q: Are there differences in compliance and regulatory approvals between these substitute parts?
A: Both IRF36ER331K and 77F331J-TR-RC are ROHS3 compliant and REACH unaffected.

Q: Do substitute inductors require the same test frequency for qualification?
A: For these parts, the specified inductance frequency test is 796 kHz and must be matched for valid substitution.

Q: Is product status relevant when selecting substitute axial inductors?
A: Only active parts should be selected; both referenced parts are currently listed as active.

Q: Are environmental ratings matched?
A: Both parts provide similar environmental specifications within the defined operating temperature ranges.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message