SDS850R-103M Equivalent & Substitute Parts

Part Overview

The SDS850R-103M is a 10 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1.5 A continuous current with a maximum DC resistance of 100 mOhm. This component is designed for surface mount applications in circuits requiring stable inductance values across the operating temperature range of -40°C to 85°C.

The SDS850R-103M is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

SDS850R-103M

API Delevan Inc.In Stock: 1022SDS850R-103M Datasheet

Current PartRFQ

SRR0805-100M

Bourns Inc.In Stock: 3302SRR0805-100M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDS850R-103M are identified based on strict electrical and mechanical parameter matching within the allowed tolerances for this inductor category. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Inductance value: 10 µH (±20% tolerance)
• Current rating: minimum 1.5 A
• DC resistance: maximum 100 mOhm
• Core material: Ferrite
• Shielding: Shielded configuration

Mechanical Parameters:

• Type: Drum core, wirewound construction
• Mounting: Surface mount
• Physical footprint: 10.50 × 8.00 mm base dimensions
• Height: compatible with 4.80 mm maximum seated height

Compliance Parameters:

• RoHS3 compliance required
• Moisture sensitivity level: MSL 1
• Operating temperature range: minimum -40°C to 85°C support

Parts meeting all these criteria are classified as direct substitutes. The SRR0805-100M from Bourns Inc. satisfies all mandatory electrical and mechanical requirements for equivalent functionality in the SDS850R-103M application.

Parameter Comparison

Engineering Selection Recommendations

The SRR0805-100M from Bourns Inc. is a direct substitute for the obsolete SDS850R-103M. Selection of this substitute part is supported by the following engineering factors:

Electrical Equivalence: All critical electrical parameters match exactly: 10 µH inductance, ±20% tolerance, 1.5 A current rating, and 100 mOhm maximum DC resistance. The ferrite core material and shielded configuration are identical.

Mechanical Compatibility: Physical dimensions are identical in length and width (10.50 × 8.00 mm). The seated height of the SRR0805-100M (4.70 mm maximum) is 0.10 mm lower than the SDS850R-103M (4.80 mm maximum), ensuring PCB layout compatibility without modification.

Compliance Status: Both parts maintain ROHS3 compliance and MSL 1 rating. The SRR0805-100M extends the operating temperature range to -40°C to 125°C, providing enhanced thermal performance beyond the original specification.

Supply Availability: The SRR0805-100M is classified as active product status with established supply chain availability, addressing the obsolescence of the SDS850R-103M.

Frequently Asked Questions (FAQ)

Q: Can the SRR0805-100M be used as a direct replacement for the SDS850R-103M without circuit modification?

A: Yes. The SRR0805-100M meets all electrical and mechanical specifications of the SDS850R-103M. No circuit modifications are required. The identical inductance value, current rating, DC resistance, and physical footprint ensure functional equivalence in the original application.

Q: What is the significance of the height difference between these parts (4.80 mm vs. 4.70 mm)?

A: The SRR0805-100M has a maximum seated height 0.10 mm lower than the SDS850R-103M. This difference is within typical PCB assembly tolerances and does not affect component placement or clearance in standard surface mount applications.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and carry MSL 1 rating. No compliance differences exist. The SRR0805-100M provides an extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), which represents an enhancement over the original specification.

Q: What packaging format is available for the SRR0805-100M?

A: The SRR0805-100M is supplied in Tape & Reel (TR) packaging, standard for surface mount inductor production quantities.

Q: Are the core materials and shielding configurations identical?

A: Yes. Both parts use ferrite core material with shielded drum core wirewound construction. The electromagnetic performance characteristics are equivalent.

Q: What is the current saturation rating of the SRR0805-100M?

A: The SRR0805-100M has a saturation current (Isat) of 2.2 A, which exceeds the 1.5 A continuous current rating and provides margin for transient current conditions.