API Delevan 5526-5 Equivalent & Substitute Parts

Part Overview

The API Delevan 5526-5 is a 206 nH unshielded wirewound surface mount inductor rated for 3 A continuous current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part operates across a temperature range of -55°C to 125°C and demonstrates a Q factor of 95 at 50 MHz with a self-resonant frequency of 800 MHz.

Key Parameters

Parameter	Value
Inductance	206 nH
Tolerance	±5%
Current Rating	3 A
Shielding	Unshielded
Core Material	Air
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 125°C
Self-Resonant Frequency	800 MHz
Q @ 50 MHz	95
Package Type	Nonstandard
Size	0.420" L x 0.250" W (10.67mm x 6.35mm)
Height - Seated (Max)	0.235" (5.97mm)

Substitute Part Grouping Explanation

Substitution of the API Delevan 5526-5 is determined by strict equivalence across the following electrical and mechanical parameters:

Inductance value: 206 nH ±5%
Current rating: 3 A minimum
Core type: Air core, unshielded
Self-resonant frequency: 800 MHz
Operating temperature range: Must support minimum -55°C to 125°C
Mounting: Surface mount, nonstandard package
Physical dimensions: Compatible footprint within specified length, width, and height tolerances

The Würth Elektronik 744918220 meets all substitution criteria as an active product with identical electrical specifications and compatible mechanical dimensions.

Parameter Comparison

Parameter	API Delevan 5526-5	Würth Elektronik 744918220
Inductance	206 nH	206 nH
Tolerance	±5%	±5%
Current Rating (Amps)	3 A	3 A
Shielding	Unshielded	Unshielded
Core Material	Air	Air
Q @ 50 MHz	95	100
Self-Resonant Frequency	800 MHz	800 MHz
Operating Temperature Range	-55°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount
Length	0.420" (10.67mm)	0.415" (10.55mm)
Width	0.250" (6.35mm)	0.250" (6.35mm)
Height - Seated (Max)	0.235" (5.97mm)	0.232" (5.90mm)
DC Resistance (DCR)	Not specified	30 mOhm Max
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Würth Elektronik 744918220 is the direct substitute for the obsolete API Delevan 5526-5. Both components share identical inductance, tolerance, current rating, and frequency characteristics. The substitute part is currently in active production status with 2240 units available in inventory.

The Würth Elektronik part provides additional engineering advantages: ROHS3 compliance, AEC-Q200 automotive qualification, and specified DC resistance of 30 mOhm maximum. Physical dimensions are within acceptable tolerance, with length and height variations of less than 0.005" and 0.003" respectively.

The operating temperature range of the substitute extends to -40°C minimum, which covers the majority of commercial and industrial applications. Applications requiring operation below -40°C must evaluate the temperature specification gap against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 744918220 be used as a direct replacement for the API Delevan 5526-5?

A: Yes. Both parts share identical inductance (206 nH), tolerance (±5%), current rating (3 A), core material (air), shielding (unshielded), and self-resonant frequency (800 MHz). Physical dimensions are compatible within standard PCB layout tolerances.

Q: What is the difference in operating temperature range?

A: The API Delevan 5526-5 operates from -55°C to 125°C, while the Würth Elektronik 744918220 operates from -40°C to 125°C. The substitute part has a higher minimum temperature limit of 15°C. Applications requiring operation below -40°C must use the original part or identify alternative solutions.

Q: Does the substitute part have better electrical performance?

A: The Würth Elektronik 744918220 has a Q factor of 100 at 50 MHz compared to 95 for the original part, representing a 5% improvement. The substitute also specifies maximum DC resistance of 30 mOhm, providing additional design margin for thermal and loss calculations.

Q: What are the packaging differences?

A: The API Delevan 5526-5 packaging is listed as nonstandard without specified supplier device package information. The Würth Elektronik 744918220 is supplied in Tape & Reel (TR) format with supplier device package 5910, enabling automated assembly processes.

Q: Is the substitute part RoHS compliant?

A: Yes. The Würth Elektronik 744918220 is ROHS3 compliant. The original API Delevan 5526-5 is RoHS non-compliant. New designs should use the compliant substitute part to meet current regulatory requirements.

Q: Are there any certifications associated with the substitute part?

A: The Würth Elektronik 744918220 carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and quality standards. The original part does not list equivalent certifications.

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