Equivalent & Substitute Parts Reference for Delevan 4426-1RC

Part Overview

The Delevan 4426-1RC is a fixed, unshielded wirewound inductor with an inductance of 2.5 nH, a current rating of 3 A, and a surface mount nonstandard package. This component is classified as obsolete, necessitating alternative selection for continued production and maintenance. The search for substitute models is driven strictly by the need to match electrical, mechanical, and mounting parameters within the fixed inductor product category.

Key Parameters

Parameter	Value
Inductance	2.5 nH
Tolerance	±10%
Current Rating (Amps)	3 A
Core Material	Air
Shielding	Unshielded
Q @ Frequency	145 @ 150MHz
Frequency - Self Resonant	3 GHz
Mounting Type	Surface Mount
Package / Case	Nonstandard
Size / Dimension	0.145" L x 0.120" W (3.68mm x 3.05mm)
Height - Seated (Max)	0.125" (3.18mm)
Operating Temperature	-55°C ~ 125°C
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution is governed strictly by matching the essential electrical parameters—inductance, current rating, core type, shielding, Q factor, self-resonant frequency, and mechanical specifications, including package dimensions and mounting type. Substitute parts are included only if they satisfy these criteria as supplied in the input.

Key parameters used for substitution:

Inductance value
Current rating
Core material (Air)
Shielding (Unshielded)
Mounting type and package/case dimensions

Parameter Comparison

Manufacturer Part Number	Manufacturer	Inductance	Tolerance	Current Rating (A)	Core Material	Shielding	Q @ Freq	Frequency - Self Resonant	Mounting Type	Package / Case	Size / Dimension	Height - Seated (Max)	Operating Temperature	RoHS Status
4426-1RC	Delevan	2.5 nH	±10%	3	Air	Unshielded	145 @ 150MHz	3 GHz	Surface Mount	Nonstandard	0.145" x 0.120" (3.68mm x 3.05mm)	0.125" (3.18mm)	-55°C ~ 125°C	RoHS non-compliant
744913025	Würth Elektronik	2.5 nH	±5%	4	Air	Unshielded	140 @ 150MHz	12.5 GHz	Surface Mount	Nonstandard	0.145" x 0.120" (3.68mm x 3.05mm)	0.125" (3.18mm)	-40°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

Selection of substitute components must be based on part status and regulatory compliance criteria provided. The Delevan 4426-1RC is obsolete and does not meet RoHS compliance, while the Würth Elektronik 744913025 is active and RoHS3 compliant. Inventory status also indicates availability for both parts. No additional technical comparison or recommendations are made outside of the parameters provided.

Frequently Asked Questions (FAQ)

Q1. What key parameters determine if 744913025 can substitute for 4426-1RC?
Answer: Matching inductance value, current rating, core material, shielding, mounting type, and package dimensions.

Q2. Is the mounting and footprint compatible between the main part and substitute?
Answer: Both options feature nonstandard surface mount packaging with identical dimensions and seated height.

Q3. Are there compliance differences affecting substitute selection?
Answer: 4426-1RC is RoHS non-compliant; 744913025 is ROHS3 compliant.

Q4. Do tolerance specifications affect compatibility?
Answer: 4426-1RC features ±10% tolerance; 744913025 features ±5% tolerance. Both values are indicated in the comparison table.

Q5. Is the substitute part available for immediate use?
Answer: Inventory for both parts is listed in the provided parameters. 744913025 is noted as active status.

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