PD105R-183K Equivalent & Substitute Parts Reference

Part Overview

The PD105R-183K is an 18 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 2.15 A continuous current with a maximum DC resistance of 90 mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The part operates across the temperature range of -55°C to 125°C and complies with ROHS3 and REACH standards.

Due to its obsolete status, sourcing active alternatives with equivalent electrical and mechanical characteristics is essential for design continuity and supply chain reliability.

Substiute Parts

PD105R-183K

API Delevan Inc.In Stock: 680PD105R-183K Datasheet

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SDR1006-180ML

Bourns Inc.In Stock: 2438SDR1006-180ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD105R-183K is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 18 µH (exact match required)
• Current rating: minimum 2.15 A continuous
• DC resistance: maximum 90 mOhm
• Core type: Ferrite drum core, wirewound
• Shielding configuration: Unshielded
• Mounting: Surface mount technology
• Compliance: ROHS3 and REACH standards

Secondary Compatibility Factors:

• Operating temperature range must encompass or exceed -55°C to 125°C
• Moisture sensitivity level: MSL 1 or equivalent
• Package classification: Nonstandard drum core form factor

The SDR1006-180ML from Bourns Inc. satisfies all primary substitution criteria and maintains full compliance with applicable environmental and regulatory standards.

Parameter Comparison

Engineering Selection Recommendations

The SDR1006-180ML is the qualified substitute for the obsolete PD105R-183K based on the following engineering factors:

Electrical Equivalence: Both components deliver identical inductance (18 µH), current rating (2.15 A), and DC resistance (90 mOhm maximum). The SDR1006-180ML exhibits higher saturation current (3.8 A versus 2.15 A), providing additional design margin without compromising performance.

Mechanical Compatibility: Footprint dimensions are compatible within standard PCB layout tolerances. The SDR1006-180ML height (5.80mm maximum) is marginally greater than the PD105R-183K (5.40mm maximum), requiring verification of vertical clearance in confined assemblies.

Regulatory and Compliance Status: Both components maintain ROHS3 compliance and REACH unaffected status. The SDR1006-180ML is actively manufactured and supported by Bourns Inc., eliminating supply chain risk associated with obsolete components.

Temperature Range Consideration: The SDR1006-180ML operates from -40°C to 125°C, which covers the upper temperature specification of the PD105R-183K. Applications requiring operation below -40°C require alternative sourcing.

Packaging: The SDR1006-180ML is supplied in Tape & Reel format, supporting automated assembly processes. Inventory availability (2384 pieces) ensures supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the SDR1006-180ML be used as a direct replacement for the PD105R-183K in existing designs?

A: Yes, provided that the operating temperature range does not fall below -40°C and vertical clearance accommodates the 5.80mm maximum seated height. All electrical parameters and compliance certifications are equivalent or superior.

Q: What is the significance of the inductance tolerance difference (±10% versus ±20%)?

A: The PD105R-183K specifies tighter tolerance (±10%), while the SDR1006-180ML allows ±20%. For applications requiring inductance precision within ±10%, component selection and testing protocols must account for the broader tolerance band of the substitute.

Q: Are there dimensional constraints that would prevent PCB layout substitution?

A: The SDR1006-180ML is 1.01mm wider (9.80mm versus 8.79mm) and 0.40mm taller (5.80mm versus 5.40mm). Verify PCB footprint spacing and vertical clearance before implementation. Horizontal dimension change is minimal and typically accommodated by standard inductor pad spacing.

Q: Does the higher saturation current of the SDR1006-180ML affect circuit behavior?

A: No. The higher saturation current (3.8 A versus 2.15 A) provides additional margin and does not degrade performance at the rated 2.15 A operating point. This characteristic is beneficial for transient current handling.

Q: What packaging format is the SDR1006-180ML supplied in?

A: The SDR1006-180ML is supplied in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. The PD105R-183K packaging format is not specified in available documentation.

Q: Are there any frequency-dependent performance differences?

A: The SDR1006-180ML specifies Q factor (30 @ 2.52 MHz) and self-resonant frequency (15 MHz). The PD105R-183K does not provide these parameters. For applications operating above 1 kHz, frequency response characteristics of the SDR1006-180ML should be evaluated against circuit requirements.