PCMB063T-R68MS Equivalent & Substitute Parts

Part Overview

The PCMB063T-R68MS is a 680 nH unshielded surface mount inductor manufactured by Susumu, rated for 15.5 A continuous current with a maximum DC resistance of 5.5 mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility exist, enabling procurement flexibility while maintaining circuit performance within specified tolerances.

Substiute Parts

PCMB063T-R68MS

SusumuIn Stock: 54118PCMB063T-R68MS Datasheet

Current PartRFQ

ASPI-0630LR-R68M-T15

Abracon LLCIn Stock: 1790ASPI-0630LR-R68M-T15 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCMB063T-R68MS is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Equivalence Criteria:

• Inductance value: 680 nH at 100 kHz test frequency
• Inductance tolerance: ±20%
• Mounting type: Surface Mount
• Package classification: Nonstandard
• RoHS3 compliance and REACH unaffected status

Allowable Parameter Variations:

• Current rating (continuous): Substitute must equal or exceed 15.5 A
• Saturation current (Isat): Substitute must equal or exceed 25 A
• DC resistance (DCR): Substitute must not exceed 5.5 mOhm maximum
• Physical dimensions: Substitute dimensions must be compatible with board layout constraints
• Moisture sensitivity: MSL 1 classification maintained

The ASPI-0630LR-R68M-T15 meets these substitution criteria with equivalent inductance, tolerance, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

PCMB063T-R68MS (Primary Selection)

The PCMB063T-R68MS is the specified component with Active product status, RoHS3 compliance, and REACH unaffected designation. This part meets all stated electrical requirements with 15.5 A continuous current rating, 25 A saturation current, and 5.5 mOhm maximum DC resistance. The unshielded construction and specified inductance of 680 nH at 100 kHz are suitable for applications where electromagnetic shielding is not required.

ASPI-0630LR-R68M-T15 (Substitute Consideration)

The ASPI-0630LR-R68M-T15 from Abracon LLC provides equivalent inductance (680 nH) and tolerance (±20%) with Active product status and identical compliance certifications (RoHS3, REACH unaffected). However, the following parameter deviations must be evaluated:

• Saturation current (Isat) is 17 A, which is below the 25 A requirement of the main part
• DC resistance (DCR) is 6.5 mOhm maximum, exceeding the 5.5 mOhm specification
• Physical dimensions are slightly larger (0.283" L x 0.262" W vs. 0.274" L x 0.260" W)
• Height is 0.118" (3.00 mm) versus 0.110" (2.80 mm)
• Shielded construction differs from unshielded main part
• Molded type with carbonyl powder core differs from main part construction

Selection of the substitute part requires confirmation that the application circuit can tolerate the reduced saturation current margin, increased DC resistance, and shielded construction characteristics.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-0630LR-R68M-T15 be used as a direct replacement for the PCMB063T-R68MS?

A: The ASPI-0630LR-R68M-T15 shares equivalent inductance (680 nH), tolerance (±20%), and compliance certifications. However, it has a lower saturation current (17 A vs. 25 A), higher DC resistance (6.5 mOhm vs. 5.5 mOhm), and shielded construction versus unshielded. Direct substitution requires circuit analysis to confirm these parameter differences do not affect application performance.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: inductance value (680 nH), inductance tolerance (±20%), inductance test frequency (100 kHz), continuous current rating (minimum 15.5 A), saturation current (minimum 25 A), and DC resistance (maximum 5.5 mOhm). All substitute parts must meet or exceed these electrical specifications.

Q: Are there physical dimension constraints for substitution?

A: Yes. The main part dimensions are 0.274" L x 0.260" W (6.95 mm x 6.60 mm) with maximum height of 0.110" (2.80 mm). The substitute part is 0.283" L x 0.262" W (7.20 mm x 6.65 mm) with maximum height of 0.118" (3.00 mm). Board layout and clearance requirements must accommodate these dimensional differences.

Q: Does shielding affect substitution compatibility?

A: Yes. The main part is unshielded while the substitute is shielded. Shielding characteristics affect electromagnetic coupling and noise performance. Applications requiring unshielded construction cannot use the shielded substitute without circuit analysis.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the PCMB063T-R68MS and ASPI-0630LR-R68M-T15 are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity and REACH unaffected status.

Q: What is the significance of the saturation current difference?

A: The main part has 25 A saturation current while the substitute has 17 A. Saturation current represents the current level at which the inductor begins to lose inductance. Applications operating near the 15.5 A continuous rating have reduced margin with the substitute part's 17 A saturation specification.

Q: How does DC resistance affect circuit performance?

A: DC resistance (DCR) causes power dissipation and voltage drop across the inductor. The main part specifies 5.5 mOhm maximum while the substitute is 6.5 mOhm maximum. Higher DCR increases heat generation and reduces circuit efficiency, particularly in high-current applications.