S1008-681K Equivalent & Substitute Parts Reference

Part Overview

The S1008-681K is a fixed surface mount inductor manufactured by API Delevan Inc. with a nominal inductance of 680 nH, rated for 750 mA continuous current, and featuring a maximum DC resistance of 200 mOhm. The component utilizes ferrite core shielding and is housed in a 1008 (2520 Metric) package suitable for high-frequency applications up to 186 MHz self-resonant frequency.

This part is currently in active production status with 796 pieces available in new original inventory. Identification of equivalent substitute parts becomes necessary when the primary part number reaches end-of-life status, when supply constraints occur, or when design requirements mandate RoHS3 compliance or alternative certifications.

Substiute Parts

S1008-681K

API Delevan Inc.In Stock: 884S1008-681K Datasheet

Current PartRFQ

S1008R-681K

API Delevan Inc.In Stock: 9164S1008R-681K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S1008-681K is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Inductance value: 680 nH
• Inductance tolerance: ±10%
• Current rating: 750 mA minimum
• DC resistance: 200 mOhm maximum
• Q factor @ 25 MHz: 40
• Self-resonant frequency: 186 MHz
• Operating temperature range: -55°C to 125°C minimum

Mechanical Parameters (Must Match):

• Package designation: 1008 (2520 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 2.92 mm L × 2.66 mm W × 2.41 mm H maximum
• Core material: Ferrite
• Shielding: Shielded configuration

Certification Parameters (May Differ):

• RoHS compliance status
• REACH compliance status
• Moisture sensitivity level

The substitute part S1008R-681K meets all electrical and mechanical equivalence criteria and is therefore classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

S1008-681K Selection Criteria:

• Use when RoHS non-compliant components are acceptable in the application
• Select when existing inventory or legacy design documentation specifies this exact part number
• Appropriate for applications where RoHS3 compliance is not a contractual or regulatory requirement
• Current inventory: 796 pieces available

S1008R-681K Selection Criteria:

• Use when RoHS3 compliance is mandatory for the end application or supply chain
• Select for new designs requiring environmental compliance certification
• Appropriate for applications subject to EU directives or equivalent regulatory frameworks
• Current inventory: 9069 pieces available
• Recommended for long-term supply chain stability due to higher inventory levels

Both parts are electrically and mechanically identical. Selection between them depends solely on compliance requirements and inventory availability. No functional performance differences exist between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Can S1008R-681K be used as a direct replacement for S1008-681K in existing designs?

A: Yes. The S1008R-681K is electrically and mechanically identical to the S1008-681K. All electrical parameters, physical dimensions, and performance characteristics are equivalent. The primary difference is RoHS3 compliance status. Substitution is valid from a functional standpoint.

Q: What is the difference between S1008-681K and S1008R-681K?

A: The S1008R-681K incorporates RoHS3 compliance, while the S1008-681K is RoHS non-compliant. All other specifications—inductance, current rating, DC resistance, package type, and operating temperature range—are identical between the two parts.

Q: Are the physical packages identical?

A: Yes. Both parts use the 1008 (2520 Metric) surface mount package with identical dimensions of 2.92 mm length × 2.66 mm width × 2.41 mm maximum height. PCB footprints and assembly processes are interchangeable.

Q: Which part should be selected for new product designs?

A: Selection depends on regulatory and contractual requirements. If RoHS3 compliance is required, use S1008R-681K. If compliance is not mandated, either part is acceptable. The S1008R-681K offers higher inventory availability (9069 pieces versus 796 pieces), which may provide supply chain advantages.

Q: Do these parts have identical electrical performance?

A: Yes. Both parts have identical inductance (680 nH), current rating (750 mA), DC resistance (200 mOhm maximum), Q factor (40 @ 25 MHz), self-resonant frequency (186 MHz), and operating temperature range (-55°C to 125°C). No performance differences exist.

Q: What is the moisture sensitivity level for both parts?

A: Both S1008-681K and S1008R-681K have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.