6729-RC Equivalent & Substitute Parts

Part Overview

The Bourns 6729-RC is a 100 µH shielded toroidal inductor rated for 2.5 A continuous current with 80 mOhm maximum DC resistance. This through-hole component is designed for applications requiring compact, shielded inductive filtering in power supply and signal conditioning circuits. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

6729-RC

Bourns Inc.In Stock: 12336729-RC Datasheet

Current PartRFQ

PT100-1000

API Delevan Inc.In Stock: 852PT100-1000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 6729-RC is determined by matching the following critical parameters:

• Inductance Value: 100 µH (±15% tolerance acceptable)
• Core Type: Iron Powder shielded construction
• Mounting Configuration: Through-hole radial/vertical orientation
• DC Resistance: 80 mOhm maximum
• Current Handling: Minimum 2.5 A rating required

The API Delevan PT100-1000 meets all substitution criteria. It maintains identical inductance, tolerance, DC resistance specification, and core material. The PT100-1000 provides enhanced current capacity (4.6 A versus 2.5 A), which is compatible with applications designed for the 6729-RC. Physical dimensions differ slightly, but both components use standard through-hole radial mounting with 4-lead open configurations suitable for PCB integration.

Parameter Comparison

Engineering Selection Recommendations

The PT100-1000 is the qualified substitute for the 6729-RC based on electrical and mechanical parameter alignment. Key selection factors:

Compliance Status: The 6729-RC is RoHS3 compliant and REACH unaffected. The PT100-1000 is RoHS non-compliant, which may impact applications subject to RoHS directives. Design teams must verify compliance requirements for their specific end-use application before substitution.

Product Availability: The 6729-RC is obsolete with limited inventory (1130 pcs). The PT100-1000 is active production with current availability (830 pcs), providing long-term procurement stability.

Current Margin: The PT100-1000 provides 40% additional current capacity (4.6 A versus 2.5 A), offering design margin for applications operating near the original part's current rating limits.

Physical Integration: Dimensional differences exist between the two parts. The PT100-1000 has a larger diameter (1.000" versus 0.850") and reduced height. PCB layout verification is required to confirm mechanical fit within existing designs.

Frequently Asked Questions (FAQ)

Q: Can the PT100-1000 directly replace the 6729-RC in existing designs?

A: Electrical substitution is valid based on matching inductance, tolerance, DC resistance, and core material. Mechanical verification is required due to dimensional differences. The PT100-1000 diameter is 0.150" larger, which may affect PCB routing and component spacing. RoHS compliance status differs and must be evaluated against application requirements.

Q: What is the significance of the higher current rating on the PT100-1000?

A: The PT100-1000 is rated for 4.6 A continuous current compared to 2.5 A for the 6729-RC. This provides additional thermal margin and allows the substitute to handle higher current loads without exceeding saturation limits. Applications designed for 2.5 A operation remain fully compatible.

Q: Are there any frequency-dependent differences between these parts?

A: Both inductors are tested at 1 kHz. No frequency-dependent parameters (Q factor, self-resonant frequency) are provided in the specification data. Frequency response characteristics must be verified through manufacturer datasheets if operation outside the 1 kHz test condition is required.

Q: How does the packaging difference affect PCB assembly?

A: Both parts use through-hole radial/vertical mounting with 4-lead open configurations. The PT100-1000 packaging is listed as bulk versus the 6729-RC specification. This affects procurement and tape-and-reel availability but does not impact electrical or mechanical compatibility once mounted.

Q: What compliance considerations apply to substitution?

A: The 6729-RC is RoHS3 compliant; the PT100-1000 is RoHS non-compliant. Applications subject to RoHS directives (EU 2015/863/EU or equivalent) must confirm that non-compliant substitution is acceptable. Both parts are REACH unaffected and carry EAR99 export classification.