PD104R-274K Equivalent & Substitute Parts Reference

Part Overview

The PD104R-274K is a 270 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications. This fixed inductor operates at 480 mA current rating with a maximum DC resistance of 900 mOhm and is rated for operating temperatures from -55°C to 125°C. The component is RoHS3 compliant and carries an MSL rating of 1 (Unlimited), indicating robust moisture tolerance suitable for standard manufacturing environments.

The PD104R-274K maintains Active product status with 909 units currently in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance optimization where electrical and mechanical parameters align within acceptable tolerances.

Substiute Parts

PD104R-274K

API Delevan Inc.In Stock: 997PD104R-274K Datasheet

Current PartRFQ

SDR1006-271KL

Bourns Inc.In Stock: 2597SDR1006-271KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PD104R-274K is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Inductance value: 270 µH (±10% tolerance band)
• Core type: Ferrite drum core, unshielded wirewound construction
• Mounting technology: Surface mount
• Package classification: Nonstandard form factor

Secondary Compatibility Parameters:

• Current rating: Minimum 480 mA (equal or higher acceptable)
• DC resistance: Maximum 900 mOhm (equal or lower acceptable)
• Operating temperature range: Minimum -55°C to 125°C coverage
• Regulatory compliance: RoHS3 and REACH status alignment

The SDR1006-271KL from Bourns Inc. qualifies as a direct substitute based on matching inductance specification (270 µH), identical core material and shielding configuration, equivalent surface mount technology, and superior current handling capability (570 mA versus 480 mA). The substitute exhibits marginally higher DC resistance (970 mOhm maximum) within acceptable engineering tolerance for most applications. Both components maintain identical RoHS3 compliance and MSL 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (PD104R-274K): Select the PD104R-274K when the original design specification requires the exact physical footprint (9.80mm L x 8.79mm W x 4.00mm H) and the 480 mA current rating is sufficient for the application. This component maintains Active product status with established supply availability (909 units in stock) and full RoHS3/REACH compliance certification.

Substitute Selection (SDR1006-271KL): The SDR1006-271KL from Bourns Inc. is suitable as a substitute when:

• PCB layout accommodates the slightly larger footprint (9.80mm L x 9.80mm W x 5.80mm H)
• Application benefits from the higher current rating (570 mA) and saturation current (1 A)
• The marginal increase in DC resistance (70 mOhm) does not exceed thermal or efficiency constraints
• Operating temperature minimum of -40°C satisfies application requirements

Both components carry identical RoHS3 compliance, MSL 1 ratings, and REACH unaffected status, ensuring regulatory alignment in manufacturing and end-use environments. The substitute offers superior current handling margin and is available in higher inventory quantity (2542 units).

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-271KL directly replace the PD104R-274K without circuit redesign?

A: The SDR1006-271KL matches the critical electrical parameters (270 µH inductance, ±10% tolerance, ferrite unshielded core, surface mount technology). However, physical dimensions differ: the substitute is 1.01mm wider and 1.80mm taller. PCB layout verification is required to confirm footprint compatibility. If the original design has spatial constraints, physical validation is necessary before implementation.

Q: What is the impact of the 70 mOhm increase in DC resistance?

A: The SDR1006-271KL exhibits 970 mOhm maximum DC resistance compared to 900 mOhm for the PD104R-274K. At the rated current of 480 mA, this represents an additional power dissipation of approximately 22.56 mW (calculated as I²R differential). For most general-purpose filtering and energy storage applications, this difference is negligible. Thermal-sensitive applications should evaluate the impact on component temperature rise.

Q: Are there temperature range limitations with the substitute?

A: The SDR1006-271KL operates from -40°C to 125°C, compared to the PD104R-274K range of -55°C to 125°C. The substitute does not support operation below -40°C. If the application requires -55°C minimum temperature operation, the original PD104R-274K must be used.

Q: How do I verify package compatibility?

A: Both components use nonstandard package types. Obtain the detailed mechanical drawings from the respective manufacturers (API Delevan for PD104R-274K and Bourns for SDR1006-271KL). Compare the footprint dimensions, lead spacing, and height clearance against your PCB design. Physical samples should be evaluated if space margins are tight.

Q: What is the difference in Q factor and self-resonant frequency?

A: The SDR1006-271KL provides specified Q factor (12 @ 796 kHz) and self-resonant frequency (3.5 MHz). The PD104R-274K does not include these parameters in the provided specification. If high-frequency performance or Q factor is critical to the application, the Bourns substitute offers documented performance data for frequency-dependent analysis.

Q: Are both parts suitable for high-reliability applications?

A: Both components are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) ratings, indicating suitability for standard manufacturing environments. Both maintain Active product status. For high-reliability or military-grade applications, consult the manufacturers' detailed qualification documentation and failure rate data.