CDR156NP-101LC Equivalent & Substitute Parts

Part Overview

The CDR156NP-101LC is a 100 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 1.6 A continuous current with a maximum DC resistance of 220mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement continuity. Substitute parts must maintain the same inductance value, tolerance, and core electrical characteristics while accommodating minor variations in current rating, DC resistance, and physical dimensions within acceptable engineering tolerances.

Substiute Parts

CDR156NP-101LC

Sumida America Components Inc.In Stock: 1136CDR156NP-101LC Datasheet

Current PartRFQ

P0250.104NLT

Pulse ElectronicsIn Stock: 3437P0250.104NLT Datasheet

DirectRFQ

SDR1806-101KL

Bourns Inc.In Stock: 1876SDR1806-101KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDR156NP-101LC are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 100 µH (exact match required)
• Inductance tolerance: ±15% or tighter
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Core construction: Wirewound (drum core or equivalent)

Secondary Compatibility Parameters:

• Current rating: Equal to or greater than 1.6 A
• DC resistance: Equal to or less than 220mOhm
• Saturation current: Equal to or greater than 2.9 A
• Operating temperature range: Minimum -40°C to +100°C coverage
• RoHS3 compliance: Required
• Moisture sensitivity: MSL 1 or equivalent

Acceptable Variations:

• Physical dimensions may vary within ±5% without functional impact
• Operating temperature range may exceed specified minimum
• DC resistance may be lower than maximum specification
• Current rating and saturation current may exceed minimum requirements

Parameter Comparison

Engineering Selection Recommendations

P0250.104NLT (Pulse Electronics) - Direct Substitute:

The P0250.104NLT qualifies as a direct substitute for the CDR156NP-101LC. Both components share identical inductance (100 µH) and tolerance (±15%), with the Pulse part offering superior electrical performance through lower DC resistance (190mOhm vs. 220mOhm maximum) and higher current rating (1.8 A vs. 1.6 A). The P0250.104NLT maintains active product status with ROHS3 compliance and MSL 1 rating. Physical dimensions are within acceptable tolerance (±2% variation). The extended operating temperature range (-40°C to +130°C) provides additional thermal margin. This part is recommended for direct replacement in new designs and existing applications.

SDR1806-101KL (Bourns Inc.) - Similar Substitute:

The SDR1806-101KL functions as a similar substitute with equivalent electrical performance. This component maintains the same 100 µH inductance with tighter tolerance (±10%), ferrite drum core construction matching the original design, and superior current handling (1.7 A rated, 3.2 A saturation). DC resistance specification (190mOhm maximum) is lower than the original part. Physical dimensions show minor variation within acceptable engineering tolerances. The SDR1806-101KL carries active product status, ROHS3 compliance, and MSL 1 rating. Operating temperature range extends to +125°C. This part is suitable for applications requiring ferrite core construction consistency with the original design.

Selection Basis:

Both substitute parts satisfy all mandatory electrical parameters: 100 µH inductance, unshielded configuration, surface mount packaging, and regulatory compliance. Current ratings and saturation currents exceed the original specification, ensuring adequate performance margin. DC resistance values are equal to or lower than the maximum specification. Physical dimensions accommodate standard PCB assembly processes. Active product status ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can P0250.104NLT replace CDR156NP-101LC in existing designs without circuit modification?

A: Yes. The P0250.104NLT maintains identical inductance (100 µH) and tolerance (±15%), with improved electrical characteristics (lower DCR, higher current rating). No circuit modifications are required. Physical dimensions are within acceptable tolerance for standard PCB layouts.

Q: What is the difference between the two substitute parts?

A: P0250.104NLT (Pulse Electronics) and SDR1806-101KL (Bourns Inc.) both meet substitution criteria. The primary difference is core construction: P0250.104NLT uses wirewound construction with unspecified core material, while SDR1806-101KL uses ferrite drum core construction matching the original design. SDR1806-101KL offers tighter inductance tolerance (±10% vs. ±15%). Both parts provide equivalent electrical performance for the specified application.

Q: Are there any thermal considerations when substituting these parts?

A: The substitute parts feature extended operating temperature ranges (-40°C to +130°C for P0250.104NLT and -40°C to +125°C for SDR1806-101KL) compared to the original specification (-40°C to +100°C). This provides additional thermal margin. DC resistance values are lower or equal to the original specification, reducing resistive heating. No additional thermal management is required.

Q: How do physical dimension differences affect PCB assembly?

A: Physical dimensions vary within ±2% across all three parts. Height variation ranges from 6.90mm to 7.36mm. These differences are within standard PCB assembly tolerances and do not require layout modifications. Verify footprint compatibility with your specific PCB design before implementation.

Q: What is the significance of the ±10% tolerance on SDR1806-101KL versus ±15% on the other parts?

A: The SDR1806-101KL offers tighter inductance tolerance (±10%), providing more precise inductance values compared to the ±15% tolerance of the original and P0250.104NLT. This tighter tolerance may be beneficial in applications requiring strict inductance specifications but is not mandatory for direct substitution.

Q: Are moisture sensitivity levels equivalent across all three parts?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage and handling requirements are identical across all parts.

Q: Can these parts be used interchangeably in production?

A: Yes, both substitute parts are qualified for production use. P0250.104NLT and SDR1806-101KL carry active product status with established supply chains. Verify component availability and lead times with your supplier before committing to production quantities.