CDR156NP-221LC Equivalent & Substitute Parts

Part Overview

The CDR156NP-221LC is a 220 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 1.1 A continuous current with a maximum DC resistance of 466.3 mOhm and operates across the temperature range of -40°C to 100°C. The part is classified as obsolete, making identification of suitable equivalent components essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, current rating compatibility, and surface mount package configuration while meeting RoHS3 compliance requirements.

Substiute Parts

CDR156NP-221LC

Sumida America Components Inc.In Stock: 1095CDR156NP-221LC Datasheet

Current PartRFQ

P0250.224NLT

Pulse ElectronicsIn Stock: 891P0250.224NLT Datasheet

DirectRFQ

SDR1806-221KL

Bourns Inc.In Stock: 1423SDR1806-221KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDR156NP-221LC are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Inductance value: 220 µH (fixed requirement)
• Inductance tolerance: ±15% or tighter
• Current rating: minimum 1.1 A continuous
• Saturation current: minimum 2.0 A
• DC resistance: maximum 466.3 mOhm
• Shielding configuration: unshielded
• Mounting type: surface mount
• Core type: wirewound construction
• RoHS3 compliance: required

Secondary Compatibility Parameters:

• Operating temperature range: minimum -40°C to 100°C
• Package configuration: nonstandard surface mount
• Moisture sensitivity level: MSL 1 or equivalent

Parts meeting all critical parameters are classified as direct substitutes. Parts with improved specifications (lower DCR, higher current rating, tighter tolerance, or extended temperature range) while maintaining all critical parameters are classified as direct equivalents suitable for drop-in replacement.

Parameter Comparison

Engineering Selection Recommendations

P0250.224NLT (Pulse Electronics) qualifies as a direct substitute for the CDR156NP-221LC. This part maintains the 220 µH inductance specification with ±15% tolerance and meets the 1.1 A current requirement with a higher rating of 1.2 A. The DC resistance of 380 mOhm is lower than the maximum 466.3 mOhm specification, providing improved performance characteristics. The extended operating temperature range of -40°C to 130°C exceeds the original specification. The part is currently in active production status with 861 units in stock, ensuring supply continuity. RoHS3 compliance and MSL 1 rating match the original component. Packaging is provided in Tape & Reel format.

SDR1806-221KL (Bourns Inc.) qualifies as a direct substitute for the CDR156NP-221LC. This part maintains the 220 µH inductance specification with a tighter tolerance of ±10% compared to the original ±15%. The current rating of 1.1 A matches the original specification exactly, with saturation current of 2.2 A exceeding the 2.0 A minimum. The DC resistance of 420 mOhm is lower than the maximum 466.3 mOhm specification. The operating temperature range of -40°C to 125°C extends the upper limit by 25°C. The part features ferrite drum core construction identical to the original and is currently in active production with 1369 units in stock. RoHS3 compliance and MSL 1 rating match the original component. Packaging is provided in Tape & Reel format.

Both substitute parts are suitable for direct replacement in applications requiring the CDR156NP-221LC. Selection between P0250.224NLT and SDR1806-221KL should be based on specific application requirements regarding DC resistance, temperature range, and inductance tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the P0250.224NLT replace the CDR156NP-221LC in all applications?

A: The P0250.224NLT meets all critical electrical parameters for substitution: 220 µH inductance, ±15% tolerance, 1.2 A current rating (exceeding the 1.1 A requirement), and 380 mOhm DC resistance (lower than the 466.3 mOhm maximum). The extended temperature range of -40°C to 130°C provides additional operational margin. Substitution is valid for applications within these specifications.

Q: What is the difference between the SDR1806-221KL and P0250.224NLT?

A: Both parts meet the CDR156NP-221LC specifications. The SDR1806-221KL offers tighter inductance tolerance (±10% versus ±15%) and ferrite drum core construction matching the original design. The P0250.224NLT provides lower DC resistance (380 mOhm versus 420 mOhm) and higher current rating (1.2 A versus 1.1 A). Both are in active production with RoHS3 compliance.

Q: Are there any package or footprint compatibility concerns?

A: The CDR156NP-221LC uses a nonstandard surface mount package measuring 0.728" L x 0.591" W x 0.276" H (18.50mm x 15.00mm x 7.00mm). The P0250.224NLT measures 0.733" L x 0.596" W x 0.290" H (18.62mm x 15.14mm x 7.36mm), and the SDR1806-221KL measures 0.720" L x 0.551" W x 0.272" H (18.30mm x 14.00mm x 6.90mm). Dimensional variations are minimal and within typical manufacturing tolerances for nonstandard packages. Verify PCB footprint compatibility with your specific design layout.

Q: Why is the original CDR156NP-221LC classified as obsolete?

A: The CDR156NP-221LC is listed as obsolete by the manufacturer. The active substitute parts P0250.224NLT and SDR1806-221KL provide equivalent or improved electrical performance and are currently in production, ensuring long-term supply availability.

Q: What is the significance of the ±10% tolerance on the SDR1806-221KL compared to ±15% on the original?

A: The SDR1806-221KL provides tighter inductance tolerance of ±10% compared to the original ±15%. This means the actual inductance value will be closer to the nominal 220 µH specification. Applications requiring tighter inductance control may benefit from this specification. Both tolerances are within acceptable ranges for standard inductor applications.

Q: Are both substitute parts RoHS3 compliant?

A: Yes, both the P0250.224NLT and SDR1806-221KL are RoHS3 compliant, matching the original CDR156NP-221LC specification. Both parts also carry MSL 1 (Unlimited) moisture sensitivity level rating.