S1008-182K Equivalent & Substitute Parts Reference

Part Overview

The S1008-182K is a fixed surface mount inductor manufactured by API Delevan Inc., designed for applications requiring 1.8 µH inductance with a current rating of 435 mA. This shielded ferrite core inductor operates across the temperature range of -55°C to 125°C and features a maximum DC resistance of 600mOhm. The component is currently in active production status. Substitute parts are identified to address inventory availability, compliance requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Inductance	1.8	µH
Inductance Tolerance	±10	%
Current Rating	435	mA
DC Resistance (Max)	600	mOhm
Shielding	Shielded	—
Core Material	Ferrite	—
Package / Case	1008 (2520 Metric)	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55 to 125	°C
Q @ Frequency	30 @ 7.9	MHz
Self Resonant Frequency	66	MHz
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the S1008-182K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Inductance value: 1.8 µH with ±10% tolerance
Current rating: 435 mA minimum
DC resistance: 600mOhm maximum
Q factor: 30 @ 7.9 MHz
Self resonant frequency: 66 MHz

Mechanical Parameters:

Package designation: 1008 (2520 Metric)
Physical dimensions: 0.115" L × 0.105" W (2.92mm × 2.66mm)
Maximum seated height: 0.095" (2.41mm)
Mounting type: Surface Mount
Shielding: Shielded configuration

Environmental Parameters:

Operating temperature range: -55°C to 125°C
Moisture sensitivity level: 1 (Unlimited)

The substitute part S1008R-182K maintains identical electrical and mechanical specifications, with the primary distinction being compliance certification status.

Parameter Comparison

Parameter	S1008-182K	S1008R-182K	Match Status
Manufacturer	API Delevan Inc.	API Delevan Inc.	Identical
Inductance	1.8 µH	1.8 µH	Identical
Inductance Tolerance	±10%	±10%	Identical
Current Rating	435 mA	435 mA	Identical
DC Resistance (Max)	600 mOhm	600 mOhm	Identical
Shielding	Shielded	Shielded	Identical
Core Material	Ferrite	Ferrite	Identical
Package / Case	1008 (2520 Metric)	1008 (2520 Metric)	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Identical
Q @ Frequency	30 @ 7.9 MHz	30 @ 7.9 MHz	Identical
Self Resonant Frequency	66 MHz	66 MHz	Identical
Size / Dimension	0.115" L × 0.105" W (2.92mm × 2.66mm)	0.115" L × 0.105" W (2.92mm × 2.66mm)	Identical
Height - Seated (Max)	0.095" (2.41mm)	0.095" (2.41mm)	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Active	Active	Identical
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Different
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Identical

Engineering Selection Recommendations

S1008-182K Selection Criteria:

Applications without RoHS3 compliance requirements
Legacy system designs or non-regulated markets
Current inventory availability: 852 pieces

S1008R-182K Selection Criteria:

Applications requiring ROHS3 compliance certification
Designs targeting regulated markets and environmental standards
Current inventory availability: 991 pieces

Both parts are manufactured by API Delevan Inc. and maintain active production status. The S1008R-182K variant incorporates ROHS3 compliance, making it suitable for applications subject to Restriction of Hazardous Substances regulations. Selection between these parts depends solely on compliance requirements and inventory availability, as all electrical and mechanical parameters are identical.

Frequently Asked Questions (FAQ)

Q: Can S1008R-182K replace S1008-182K in existing designs?

A: Yes. The S1008R-182K is electrically and mechanically equivalent to the S1008-182K. All critical parameters including inductance, current rating, DC resistance, package dimensions, and operating temperature range are identical. The primary difference is ROHS3 compliance certification on the S1008R-182K variant.

Q: What is the difference between S1008-182K and S1008R-182K?

A: The S1008R-182K is ROHS3 compliant, while the S1008-182K is RoHS non-compliant. All other specifications, including electrical performance, physical dimensions, and thermal characteristics, are identical.

Q: Are these parts pin-compatible?

A: Both parts use the 1008 (2520 Metric) surface mount package with identical physical dimensions (0.115" L × 0.105" W, maximum height 0.095"). They are footprint-compatible and require no PCB layout modifications.

Q: What is the inductance tolerance for these parts?

A: Both S1008-182K and S1008R-182K have an inductance tolerance of ±10%, meaning the actual inductance value will fall between 1.62 µH and 1.98 µH.

Q: Can these inductors handle 435 mA continuously?

A: Both parts are rated for 435 mA current. This is the maximum continuous current rating at the specified operating temperature range of -55°C to 125°C.

Q: What is the DC resistance specification?

A: Both parts have a maximum DC resistance of 600mOhm. This specification is critical for power loss calculations in circuit design.

Q: Are these parts suitable for high-frequency applications?

A: Yes. Both parts have a self-resonant frequency of 66 MHz and a Q factor of 30 @ 7.9 MHz, making them suitable for RF and high-frequency circuit applications within this frequency range.

Q: What is the moisture sensitivity level?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited shelf life without moisture control requirements.

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