PD105R-334K Equivalent & Substitute Parts

Part Overview

The PD105R-334K is a 330 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 520 mA continuous current with a maximum DC resistance of 1.15 Ohm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete product status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for design continuity and procurement reliability.

Substiute Parts

PD105R-334K

API Delevan Inc.In Stock: 719PD105R-334K Datasheet

Current PartRFQ

SDR1006-331KL

Bourns Inc.In Stock: 1471SDR1006-331KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD105R-334K is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 330 µH
• Inductance tolerance: ±10%
• DC resistance: 1.15 Ohm maximum
• Current rating: minimum 520 mA
• Core type: Ferrite drum core, unshielded
• Mounting: Surface mount
• Compliance: ROHS3 compliant

Allowable Variations:

• Current saturation (Isat) may exceed the main part specification
• Operating temperature range may be narrower or equal
• Physical dimensions may vary within nonstandard package constraints
• Product status may differ (active vs. obsolete)
• Packaging format may differ (bulk vs. tape & reel)

The SDR1006-331KL from Bourns Inc. meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

SDR1006-331KL Selection Basis:

The SDR1006-331KL from Bourns Inc. is qualified as a direct substitute for the obsolete PD105R-334K based on the following engineering criteria:

1. Electrical Equivalence: All critical electrical parameters match exactly—inductance (330 µH ±10%), current rating (520 mA), and DC resistance (1.15 Ohm maximum). The higher saturation current (850 mA vs. 520 mA) provides additional design margin without compromising circuit performance.

2. Compliance Alignment: Both components maintain ROHS3 compliance and carry identical REACH and ECCN classifications, ensuring regulatory continuity in manufacturing and supply chain operations.

3. Active Product Status: The SDR1006-331KL is classified as active, providing long-term availability and supply chain stability compared to the obsolete PD105R-334K.

4. Temperature Range Consideration: The substitute operates across -40°C to 125°C. Applications requiring operation below -40°C must evaluate alternative solutions or confirm that the narrower range is acceptable for the intended use case.

5. Packaging Flexibility: The substitute is available in tape & reel format, which is standard for automated assembly processes. Bulk quantities of the PD105R-334K may be converted to tape & reel format through secondary processing if required.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-331KL replace the PD105R-334K in all applications?

A: The SDR1006-331KL meets all mandatory electrical and mechanical specifications for direct substitution. However, if your application requires operation below -40°C, the narrower operating temperature range of the substitute must be evaluated against your specific thermal requirements.

Q: What is the difference between the current rating (520 mA) and saturation current (850 mA) in the substitute?

A: The current rating (520 mA) is the continuous operating current limit. The saturation current (850 mA) is the threshold at which the inductor's magnetic core begins to saturate, reducing inductance. The substitute's higher saturation current indicates greater design margin and does not affect substitution validity.

Q: Are there packaging differences between these parts?

A: The PD105R-334K is supplied in bulk format, while the SDR1006-331KL is supplied in tape & reel (TR) format. Tape & reel is the standard packaging for surface mount components in automated assembly. If bulk quantities are required, contact your supplier regarding secondary packaging options.

Q: Do both parts have the same physical dimensions?

A: Both parts are classified as nonstandard package types with similar footprints. The PD105R-334K measures 0.386" L × 0.346" W × 0.213" H (max), while the SDR1006-331KL measures 0.386" L × 0.386" W × 0.228" H (max). Verify PCB layout compatibility before finalizing the substitution.

Q: What compliance certifications apply to the substitute?

A: The SDR1006-331KL is ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.4000, matching the regulatory profile of the original part.

Q: Is the ±10% inductance tolerance maintained in the substitute?

A: Yes. Both the PD105R-334K and SDR1006-331KL maintain ±10% inductance tolerance at 1 kHz test frequency, ensuring circuit performance consistency.