CDR95NP-221MC Equivalent & Substitute Parts Reference

Part Overview

The CDR95NP-221MC is a 220 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc., rated for 700 mA continuous current with a maximum DC resistance of 669 mOhm. This surface mount component operates across the temperature range of -40°C to 100°C and is classified as obsolete product status.

Due to the obsolete status of the CDR95NP-221MC, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure supply chain availability. Substitute inductors must maintain the core electrical specifications: 220 µH inductance at ±20% tolerance, surface mount packaging in nonstandard dimensions, unshielded construction, and compatibility with the original operating parameters.

Substiute Parts

CDR95NP-221MC

Sumida America Components Inc.In Stock: 1165CDR95NP-221MC Datasheet

Current PartRFQ

P0752.224NLT

Pulse ElectronicsIn Stock: 5104P0752.224NLT Datasheet

DirectRFQ

SDR1005-221KL

Bourns Inc.In Stock: 6221SDR1005-221KL Datasheet

DirectRFQ

B82476A1224M000

EPCOS - TDK ElectronicsIn Stock: 2086B82476A1224M000 Datasheet

SimilarRFQ

B82476B1224M100

EPCOS - TDK ElectronicsIn Stock: 2135B82476B1224M100 Datasheet

SimilarRFQ

SDR1005-221ML

Bourns Inc.In Stock: 1422SDR1005-221ML Datasheet

SimilarRFQ

UP2B-221-R

Eaton - Electronics DivisionIn Stock: 1967UP2B-221-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDR95NP-221MC are selected based on strict electrical and mechanical parameter alignment. The substitution logic is based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 220 µH (fixed requirement)
• Inductance tolerance: ±20% (acceptable range)
• Current rating: minimum 700 mA (equal or higher acceptable)
• DC resistance: maximum 669 mOhm (lower values acceptable for improved performance)
• Shielding: Unshielded (must match)
• Type: Drum core wirewound construction
• Material: Ferrite core
• Mounting: Surface mount, nonstandard package
• RoHS compliance: ROHS3 Compliant

Substitution Categories:

Direct Substitutes (full parameter compatibility):

• P0752.224NLT (Pulse Electronics): Matches inductance, tolerance, shielding, and mounting. Current rating 800 mA exceeds requirement. DCR 840 mOhm is within acceptable range.
• SDR1005-221KL (Bourns Inc.): Matches inductance, shielding, and mounting. Current rating 700 mA equals requirement. DCR 780 mOhm is acceptable. Tighter tolerance ±10%.
• SDR1005-221ML (Bourns Inc.): Matches inductance, tolerance, shielding, and mounting. Current rating 700 mA equals requirement. DCR 780 mOhm is acceptable.

Similar Substitutes (enhanced electrical performance):

• B82476A1224M000 (EPCOS - TDK Electronics): Matches inductance, tolerance, shielding, and mounting. Current rating 800 mA exceeds requirement. DCR 530 mOhm provides superior performance. Extended temperature range -55°C ~ 150°C.
• B82476B1224M100 (EPCOS - TDK Electronics): Matches inductance, tolerance, shielding, and mounting. Current rating 880 mA exceeds requirement. DCR 530 mOhm provides superior performance. AEC-Q200 rated. Extended temperature range -55°C ~ 150°C.

Compatible Alternative (functional equivalence with dimensional variation):

• UP2B-221-R (Eaton - Electronics Division): Matches inductance, tolerance, shielding, and mounting. Current rating 773 mA exceeds requirement. DCR 671.7 mOhm is comparable. Larger physical dimensions (0.550" L x 0.410" W vs. 0.508" L x 0.370" W).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

The SDR1005-221ML (Bourns Inc.) and SDR1005-221KL (Bourns Inc.) are recommended as primary substitutes. Both parts maintain active product status, ensuring long-term availability and supply chain stability. The SDR1005-221KL offers tighter inductance tolerance (±10% vs. ±20%), which may provide improved circuit performance in applications sensitive to inductance variation. Both Bourns inductors are ROHS3 compliant with MSL rating 1 and match the original operating temperature minimum of -40°C.

For Enhanced Electrical Performance:

The B82476A1224M000 and B82476B1224M100 (EPCOS - TDK Electronics) provide superior DC resistance characteristics (530 mOhm vs. 669 mOhm), resulting in lower power dissipation and improved efficiency. The B82476B1224M100 includes AEC-Q200 automotive qualification and supports extended temperature operation (-55°C ~ 150°C), making it suitable for demanding thermal environments. Both parts are ROHS3 compliant and maintain MSL rating 1.

For Current Margin Applications:

The P0752.224NLT (Pulse Electronics) provides 800 mA current rating, offering 100 mA additional margin above the original 700 mA specification. This part is ROHS3 compliant with active product status and MSL rating 1.

For Space-Constrained Designs:

The SDR1005-221KL and SDR1005-221ML offer the smallest physical footprint (0.500" L x 0.394" W, height 0.197") among all substitutes, making them optimal for compact PCB layouts.

Dimensional Compatibility Note:

The UP2B-221-R (Eaton) has larger physical dimensions (0.550" L x 0.410" W, height 0.236") compared to the original CDR95NP-221MC (0.508" L x 0.370" W, height 0.205"). This part is suitable only if PCB layout permits the increased footprint.

Frequently Asked Questions (FAQ)

Q1: Can I use a substitute part with higher current rating than the original CDR95NP-221MC?

A: Yes. The substitute parts P0752.224NLT (800 mA), B82476A1224M000 (800 mA), B82476B1224M100 (880 mA), and UP2B-221-R (773 mA) all exceed the original 700 mA rating. Higher current ratings provide additional design margin and do not create compatibility issues in circuits designed for the original 700 mA specification.

Q2: What is the significance of DC resistance (DCR) differences between the original and substitute parts?

A: DC resistance directly affects power dissipation and heat generation in the inductor. Lower DCR values (such as 530 mOhm in the EPCOS parts) result in reduced power loss compared to the original 669 mOhm specification. This is beneficial for efficiency-critical applications. Higher DCR values (such as 840 mOhm in the Pulse Electronics part) are acceptable if the circuit design accommodates the additional power dissipation.

Q3: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (P0752.224NLT, SDR1005-221KL, SDR1005-221ML, B82476A1224M000, B82476B1224M100, and UP2B-221-R) are ROHS3 compliant and carry MSL rating 1 (Unlimited moisture sensitivity level).

Q4: Which substitute part has the best long-term availability?

A: All substitute parts maintain active product status, ensuring ongoing manufacturing and supply. Bourns Inc. (SDR1005 series), EPCOS - TDK Electronics (B82476 series), and Pulse Electronics are established manufacturers with strong market presence. Current inventory levels are: SDR1005-221KL (6200 pcs), SDR1005-221ML (1403 pcs), B82476A1224M000 (2010 pcs), B82476B1224M100 (2034 pcs), P0752.224NLT (5057 pcs), and UP2B-221-R (1956 pcs).

Q5: Can I use the B82476B1224M100 in automotive applications?

A: Yes. The B82476B1224M100 carries AEC-Q200 automotive qualification and supports extended temperature operation (-55°C ~ 150°C), making it suitable for automotive and harsh environment applications.

Q6: What is the difference between SDR1005-221KL and SDR1005-221ML?

A: Both are Bourns SDR1005 series inductors with identical electrical performance (220 µH, 700 mA, 780 mOhm DCR). The primary difference is inductance tolerance: SDR1005-221KL offers ±10% tolerance, while SDR1005-221ML offers ±20% tolerance. The tighter tolerance of the KL variant may provide improved circuit performance in applications sensitive to inductance variation.

Q7: Are there dimensional constraints I should consider when selecting a substitute?

A: Yes. The original CDR95NP-221MC measures 0.508" L x 0.370" W with 0.205" maximum seated height. Most substitutes (P0752.224NLT, B82476A1224M000, B82476B1224M100) have similar dimensions (0.510" L x 0.370" W, heights 0.200-0.215"). The SDR1005 series is slightly larger (0.500" L x 0.394" W, height 0.197"), and the UP2B-221-R is significantly larger (0.550" L x 0.410" W, height 0.236"). Verify PCB layout compatibility before final selection.

Q8: What is the inductance frequency test condition, and does it affect substitution?

A: The original CDR95NP-221MC specifies inductance measurement at 100 kHz. Most substitutes (P0752.224NLT, B82476A1224M000, B82476B1224M100) also use 100 kHz testing, ensuring direct comparison. The SDR1005 series uses 1 kHz testing, which may result in slightly different measured inductance values due to frequency-dependent core behavior. This difference is within the ±20% tolerance specification and does not affect functional compatibility.

Q9: Which substitute offers the best thermal performance?

A: The B82476A1224M000 and B82476B1224M100 offer the lowest DC resistance (530 mOhm), resulting in the lowest power dissipation and best thermal performance. These parts also support the widest operating temperature range (-55°C ~ 150°C), making them optimal for high-temperature applications.

Q10: Can I mix different substitute parts in the same circuit board design?

A: Yes, provided all parts meet the circuit's electrical requirements (220 µH inductance, 700 mA minimum current rating, unshielded construction). However, for consistency and simplified inventory management, using a single substitute part number across the design is recommended.