PD104R-394K Equivalent & Substitute Parts

Part Overview

The PD104R-394K is an unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 390 µH inductance at 390 mA continuous current with a maximum DC resistance of 1.3Ω. The component operates across a temperature range of -55°C to 125°C and is available in surface mount nonstandard package configuration. This part maintains active product status and holds ROHS3 compliance with unlimited moisture sensitivity rating.

Identification of substitute components becomes necessary when original inventory is unavailable, when sourcing from multiple suppliers is required for supply chain resilience, or when applications require alternative performance characteristics within compatible electrical and mechanical parameters.

Substiute Parts

PD104R-394K

API Delevan Inc.In Stock: 1023PD104R-394K Datasheet

Current PartRFQ

SDR1006-391KL

Bourns Inc.In Stock: 2044SDR1006-391KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD104R-394K with the SDR1006-391KL is permitted based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Identical inductance value: 390 µH at ±10% tolerance
• Matching DC resistance specification: 1.3Ω maximum
• Compatible current rating: 480 mA (exceeds 390 mA requirement, providing headroom)
• Identical core material: Ferrite, unshielded drum core construction
• Same inductance test frequency: 1 kHz

Mechanical Compatibility Criteria:

• Identical mounting type: Surface mount
• Footprint compatibility: Both use 9.80mm length dimension
• Height consideration: SDR1006-391KL seated height (5.80mm) exceeds original 4.00mm, requiring PCB layout verification

Regulatory and Compliance Alignment:

• ROHS3 compliance maintained
• Identical MSL rating: 1 (Unlimited)
• Same temperature operating range suitability

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-391KL qualifies as an electrical equivalent to the PD104R-394K based on matching inductance (390 µH), identical DC resistance specification (1.3Ω), and compatible current handling characteristics. Both components maintain active product status and ROHS3 compliance, ensuring regulatory alignment.

The substitute component offers improved current capacity (480 mA versus 390 mA), which provides additional margin for circuit operation without degradation of other critical electrical parameters. Both parts are manufactured with ferrite unshielded drum core construction and operate at 1 kHz inductance test frequency.

Mechanical substitution requires attention to the height differential: the SDR1006-391KL seated height of 5.80mm compared to the original 4.00mm necessitates PCB clearance verification. The width dimension differs by 1.01mm (9.80mm versus 8.79mm), requiring footprint layout confirmation before deployment.

Temperature range differs at the lower bound: SDR1006-391KL operates from -40°C versus the original -55°C specification. Application-specific temperature requirements must be evaluated for suitability.

Frequently Asked Questions (FAQ)

Q: What electrical parameters determine substitution eligibility? A: Inductance value and tolerance (390 µH ±10%), DC resistance (1.3Ω maximum), and current rating (minimum 390 mA) are the primary electrical criteria. The SDR1006-391KL meets all three requirements.

Q: Can the SDR1006-391KL be used in all applications where the PD104R-394K is specified? A: Electrical compatibility is confirmed for identical inductance and DC resistance parameters. Physical footprint compatibility requires layout assessment due to height (5.80mm versus 4.00mm) and width (9.80mm versus 8.79mm) differences. Temperature range suitability must be confirmed for applications below -40°C.

Q: What are the differences in current handling between these components? A: The PD104R-394K is rated for 390 mA continuous current, while the SDR1006-391KL is rated for 480 mA. The substitute provides additional current margin without affecting inductance or resistance specifications.

Q: Are both parts RoHS compliant? A: Yes. Both the PD104R-394K and SDR1006-391KL maintain ROHS3 compliance and identical moisture sensitivity rating (MSL 1, Unlimited).

Q: What is the primary mechanical consideration for substitution? A: The seated height of the SDR1006-391KL (5.80mm) exceeds the original component (4.00mm) by 1.80mm. PCB design clearance and trace routing around the substituted component must be verified before implementation.