SPD127R-683M Equivalent & Substitute Parts

Part Overview

The SPD127R-683M is a 68 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications requiring moderate current handling and low DC resistance. This component operates across the industrial temperature range of -55°C to 125°C and maintains active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent inductance values, core materials, shielding characteristics, and mounting technologies are available from alternative manufacturers. Selection of substitute components requires verification of current rating compatibility, DC resistance specifications, and physical package dimensions within the application's thermal and spatial constraints.

Substiute Parts

SPD127R-683M

API Delevan Inc.In Stock: 793SPD127R-683M Datasheet

Current PartRFQ

SRR1208-680YL

Bourns Inc.In Stock: 5982SRR1208-680YL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPD127R-683M are identified based on strict electrical and mechanical parameter alignment. The substitution logic requires:

Mandatory Matching Criteria:

• Inductance value of 68 µH at 1 kHz test frequency
• Ferrite drum core construction with shielding
• Surface mount technology
• RoHS3 compliance and REACH unaffected status
• Operating temperature range encompassing the application requirement

Allowable Parameter Variations:

• Current rating may be lower if application current demand does not exceed the substitute part's specification
• DC resistance may vary within acceptable power dissipation limits
• Tolerance may differ (±15% vs ±20%) without affecting circuit function
• Physical dimensions may vary within PCB layout constraints
• Packaging format (Tape & Reel vs Cut Tape) does not affect electrical performance

The SRR1208-680YL from Bourns Inc. qualifies as a substitute based on matching inductance, core material, shielding, and mounting technology. However, the continuous current rating of 1.8 A is lower than the SPD127R-683M specification of 2.1 A, requiring application-level verification that circuit current does not exceed 1.8 A.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SPD127R-683M): Select the SPD127R-683M when the application requires continuous current operation at or near 2.1 A and operates at temperatures below -40°C. This part maintains active product status with established supply chain availability (699 pcs in stock). The wider operating temperature range (-55°C to 125°C) accommodates demanding environmental conditions. RoHS3 compliance and REACH unaffected status satisfy regulatory requirements for commercial and industrial applications.

Substitute Part Selection (SRR1208-680YL): The SRR1208-680YL from Bourns Inc. is suitable when application current does not exceed 1.8 A continuous operation and minimum operating temperature remains above -40°C. This substitute offers improved DC resistance (135 mOhm vs 140 mOhm maximum), resulting in lower power dissipation. Tighter inductance tolerance (±15% vs ±20%) provides better circuit tuning precision. Higher saturation current (2.6 A vs 2.1 A) offers additional margin against transient overcurrent events. Larger physical dimensions (12.70 × 12.70 × 8.50 mm) require verification of PCB layout clearance. Abundant inventory (5,895 pcs) supports high-volume production. RoHS3 compliance and REACH unaffected status maintain regulatory alignment.

Compliance Verification: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity level (MSL 1 - Unlimited), eliminating compliance-related substitution barriers. Both components are classified under HTSUS 8504.50.4000 and ECCN EAR99, supporting equivalent supply chain and export documentation requirements.

Frequently Asked Questions (FAQ)

Q: Can the SRR1208-680YL replace the SPD127R-683M in all applications?

A: No. The SRR1208-680YL has a lower continuous current rating (1.8 A vs 2.1 A) and narrower operating temperature range (-40°C to 125°C vs -55°C to 125°C). Substitution is valid only when application current remains below 1.8 A and minimum operating temperature does not fall below -40°C.

Q: What is the impact of different DC resistance values?

A: The SRR1208-680YL has lower maximum DC resistance (135 mOhm vs 140 mOhm). Lower resistance reduces I²R power dissipation, improving thermal performance. This difference is typically negligible in most applications but becomes significant in high-current or thermally constrained designs.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The SRR1208-680YL is slightly larger (12.70 × 12.70 × 8.50 mm vs 12.00 × 12.00 × 8.00 mm). Verify that PCB footprint clearance and component placement do not conflict with adjacent circuitry, thermal management features, or mechanical constraints before substitution.

Q: Do packaging format differences affect electrical performance?

A: No. The SPD127R-683M is supplied in Tape & Reel (TR) format while the SRR1208-680YL is available in Cut Tape (CT) & Digi-Reel® format. Packaging format affects supply chain logistics and assembly handling but does not alter electrical characteristics or performance.

Q: What is the significance of the Q factor and self-resonant frequency provided for the SRR1208-680YL?

A: The Q factor (20 @ 2.52 MHz) and self-resonant frequency (5 MHz) characterize frequency-dependent behavior. These parameters are relevant for high-frequency applications, filtering circuits, or resonant designs. The SPD127R-683M does not provide these specifications, limiting frequency-domain analysis for that part.

Q: Are both parts suitable for RoHS3 and REACH-compliant applications?

A: Yes. Both the SPD127R-683M and SRR1208-680YL are RoHS3 compliant and REACH unaffected, meeting regulatory requirements for commercial, industrial, and consumer electronics applications in regulated markets.

Q: What is the tolerance difference impact on circuit design?

A: The SRR1208-680YL has tighter tolerance (±15% vs ±20%). For circuits requiring precise inductance values, the substitute provides better component-to-component consistency. For applications with wide design margins, the tolerance difference is negligible.