CDR156NP-220LC Equivalent & Substitute Parts

Part Overview

The CDR156NP-220LC is a 22 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 4 A continuous current with a maximum DC resistance of 43.5 mOhm. This surface mount component operates across the temperature range of -40°C to 100°C and is RoHS3 compliant with MSL 1 rating.

The CDR156NP-220LC is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

CDR156NP-220LC

Sumida America Components Inc.In Stock: 746CDR156NP-220LC Datasheet

Current PartRFQ

P0250.223NLT

Pulse ElectronicsIn Stock: 2099P0250.223NLT Datasheet

DirectRFQ

SDR1806-220ML

Bourns Inc.In Stock: 8427SDR1806-220ML Datasheet

SimilarRFQ

SDR2207-220YL

Bourns Inc.In Stock: 2002SDR2207-220YL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDR156NP-220LC are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH (exact match required)
• Inductance tolerance: ±15% or tighter
• Current rating: minimum 3.5 A (acceptable for applications requiring ≤4 A)
• DC resistance: ≤47 mOhm maximum
• Core type: Drum core wirewound or wirewound construction
• Shielding: Unshielded
• Mounting type: Surface mount
• Operating temperature range: minimum -40°C to 100°C coverage
• RoHS3 compliance: required
• MSL rating: 1 (Unlimited)

Substitution Logic: Parts are grouped as direct or similar substitutes based on current rating alignment and DC resistance specifications. Direct substitutes maintain equivalent or superior current handling capability. Similar substitutes operate within acceptable current parameters for most applications but may require thermal analysis for maximum current scenarios.

Parameter Comparison

Engineering Selection Recommendations

SDR2207-220YL (Bourns Inc.) - Preferred Substitute

The SDR2207-220YL is the optimal substitute for the CDR156NP-220LC. Both components share identical inductance (22 µH), current rating (4 A), inductance tolerance (±15%), and core construction (drum core ferrite). The SDR2207-220YL features superior DC resistance (39.4 mOhm versus 43.5 mOhm), providing lower power dissipation. The part is active in production status, ensuring long-term availability. Operating temperature range extends to 125°C, exceeding the original specification. RoHS3 compliance and MSL 1 rating are maintained. Physical dimensions are comparable with acceptable PCB layout accommodation.

P0250.223NLT (Pulse Electronics) - Direct Substitute

The P0250.223NLT qualifies as a direct substitute with matching inductance (22 µH) and inductance tolerance (±15%). Current rating is 3.5 A, which is 0.5 A below the original specification. DC resistance is 47 mOhm, slightly higher than the original 43.5 mOhm. This part is suitable for applications operating at or below 3.5 A continuous current. The extended operating temperature range (-40°C to 130°C) and active production status support long-term supply continuity. Physical dimensions are nearly identical to the original part. RoHS3 compliance and MSL 1 rating are confirmed.

SDR1806-220ML (Bourns Inc.) - Similar Substitute

The SDR1806-220ML provides a similar substitution option with matching inductance (22 µH) and ferrite drum core construction. Current rating is 3.6 A, requiring verification for applications demanding the full 4 A specification. DC resistance is 45 mOhm, within acceptable tolerance. Inductance tolerance is ±20%, which is wider than the original ±15% specification. The part is active in production with extended temperature range (-40°C to 125°C). Physical dimensions are slightly smaller, which may provide PCB layout advantages. RoHS3 compliance and MSL 1 rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can the SDR2207-220YL directly replace the CDR156NP-220LC without circuit modifications?

A: Yes. The SDR2207-220YL matches the critical electrical parameters: 22 µH inductance, ±15% tolerance, 4 A current rating, and ferrite drum core construction. Physical dimensions are comparable. No circuit modifications are required.

Q: What is the primary limitation of the P0250.223NLT as a substitute?

A: The P0250.223NLT has a current rating of 3.5 A compared to the original 4 A specification. Applications requiring continuous current above 3.5 A should use the SDR2207-220YL or SDR1806-220ML instead. DC resistance is also slightly higher at 47 mOhm.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts (P0250.223NLT, SDR1806-220ML, and SDR2207-220YL) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original CDR156NP-220LC specification.

Q: How do the physical dimensions of substitute parts compare to the original?

A: The P0250.223NLT and SDR2207-220YL have dimensions very close to the original (within 0.5mm length and width). The SDR1806-220ML is slightly smaller (18.30mm x 14.00mm versus 18.50mm x 15.00mm). Height differences range from 6.90mm to 7.80mm. PCB layout verification is recommended for space-constrained applications.

Q: Which substitute part has the lowest DC resistance?

A: The SDR2207-220YL has the lowest DC resistance at 39.4 mOhm, compared to 43.5 mOhm for the original CDR156NP-220LC. This results in lower power dissipation and improved thermal performance.

Q: What is the difference between "direct" and "similar" substitutes?

A: Direct substitutes (P0250.223NLT) maintain the same current rating specification. Similar substitutes (SDR1806-220ML and SDR2207-220YL) may have slightly different current ratings or tolerances but remain functionally compatible for most applications. The SDR2207-220YL is classified as similar due to physical dimension differences, though it matches all electrical specifications.

Q: Are there any temperature range considerations when selecting a substitute?

A: The original CDR156NP-220LC operates from -40°C to 100°C. All substitute parts extend this range to 125°C or 130°C, providing improved thermal margin. Applications operating near the upper temperature limit benefit from this extended specification.

Q: Can the SDR1806-220ML be used in applications requiring the full 4 A rating?

A: The SDR1806-220ML is rated for 3.6 A continuous current. For applications requiring sustained 4 A operation, the SDR2207-220YL is the appropriate choice. The SDR1806-220ML may be acceptable for applications with intermittent 4 A peaks below saturation current (6.7 A).