Equivalent & Substitute Parts for CD1-330-R

Part Overview

The CD1-330-R is a 33 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 2.45 A continuous current with a maximum DC resistance of 93 mOhm and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity. Alternative parts must maintain electrical performance within the specified inductance, current rating, and resistance parameters while accommodating modern supply chain availability.

Substiute Parts

CD1-330-R

Eaton - Electronics DivisionIn Stock: 1170CD1-330-R Datasheet

Current PartRFQ

DR1040-330-R

Eaton - Electronics DivisionIn Stock: 2015DR1040-330-R Datasheet

DirectRFQ

CDRH104RNP-330NC

Sumida America Components Inc.In Stock: 421441CDRH104RNP-330NC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD1-330-R are identified based on strict electrical and mechanical parameter alignment. The substitution logic is organized into two categories:

Direct Manufacturer Substitute (Eaton - Electronics Division): The DR1040-330-R represents a direct alternative from the original manufacturer. This part maintains the identical inductance value of 33 µH, shielding configuration, DC resistance specification of 93 mOhm maximum, and tolerance of ±30%. The current rating differs at 2.2 A versus the original 2.45 A; however, the saturation current (Isat) of 2.45 A in the substitute meets the original part's continuous rating requirement. The operating temperature range extends to 125°C, providing enhanced thermal margin. The DR1040-330-R is classified as active product status with RoHS3 compliance and improved packaging availability in Tape & Reel format.

Similar Manufacturer Substitute (Sumida America Components Inc.): The CDRH104RNP-330NC provides cross-manufacturer compatibility with identical inductance, shielding, DC resistance, and tolerance specifications. The current rating of 2.2 A and saturation current of 2.3 A establish functional equivalence within the application envelope. Physical dimensions vary slightly (10.20mm × 10.00mm versus 10.50mm × 10.40mm), remaining within the nonstandard package classification. This part is active product status with RoHS3 compliance and represents the highest inventory availability at 421,400 pieces.

Key Parameters Determining Substitution:

• Inductance: 33 µH (exact match required)
• DC Resistance: 93 mOhm maximum (must not exceed)
• Shielding: Shielded configuration (must be maintained)
• Current Rating: Minimum 2.2 A (substitute must support application current)
• Mounting: Surface Mount (PCB compatibility)
• Tolerance: ±30% (inductance accuracy)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement with Manufacturer Support: The DR1040-330-R is the primary substitute when maintaining single-source manufacturer continuity is required. As an active product from Eaton - Electronics Division with RoHS3 compliance, this part provides long-term supply assurance. The extended operating temperature range to 125°C offers additional thermal margin beyond the original specification. The saturation current of 2.45 A accommodates the original part's 2.45 A continuous rating, ensuring functional equivalence. Tape & Reel packaging supports automated assembly processes. This substitute is appropriate for new designs and production transitions from the obsolete CD1-330-R.

For Maximum Availability and Cost Optimization: The CDRH104RNP-330NC from Sumida America Components Inc. provides the highest inventory availability at 421,400 pieces. With active product status and RoHS3 compliance, this part meets modern regulatory requirements. The electrical specifications align with application requirements: 33 µH inductance, 93 mOhm maximum DC resistance, and 2.2 A current rating with 2.3 A saturation current. Physical dimensions are slightly reduced (10.20mm × 10.00mm), which may provide PCB layout advantages in space-constrained applications. Cut Tape and Digi-Reel packaging options support both manual and automated procurement workflows. This substitute is suitable for high-volume production and applications where cross-manufacturer sourcing is acceptable.

Temperature Consideration: Applications operating continuously above 85°C should prioritize the DR1040-330-R, which is rated to 125°C. The CDRH104RNP-330NC is rated to 100°C, providing intermediate thermal capability. The original CD1-330-R specification of -40°C to 85°C is met by both substitutes within their respective ranges.

Frequently Asked Questions (FAQ)

Q: Can the DR1040-330-R replace the CD1-330-R in all applications?

A: The DR1040-330-R is electrically equivalent for applications where the continuous current requirement does not exceed 2.2 A. The original CD1-330-R is rated for 2.45 A continuous current, while the DR1040-330-R is rated for 2.2 A. However, the saturation current (Isat) of the DR1040-330-R is 2.45 A, which matches the original part's continuous rating. For applications requiring sustained current above 2.2 A, the saturation current specification must be evaluated against the duty cycle and thermal management of the design. Both parts maintain identical inductance, DC resistance, shielding, and tolerance specifications.

Q: What is the difference between current rating and saturation current?

A: Current rating (continuous current) represents the maximum sustained current the inductor can carry without exceeding temperature limits under specified thermal conditions. Saturation current (Isat) is the current level at which the inductor's inductance begins to degrade due to core saturation. The DR1040-330-R has a 2.2 A continuous rating but a 2.45 A saturation current, meaning it can handle transient currents up to 2.45 A before inductance degradation occurs, though sustained operation should remain below 2.2 A.

Q: Are the physical dimensions compatible between substitutes?

A: All three parts maintain the same height of 4.00mm and are classified as surface mount components. The CD1-330-R and DR1040-330-R have nearly identical footprints (10.50mm × 10.40mm and 10.50mm × 10.30mm respectively). The CDRH104RNP-330NC has a slightly smaller footprint of 10.20mm × 10.00mm. These dimensional variations remain within the nonstandard package classification and should be verified against specific PCB layout constraints before implementation.

Q: Which substitute offers the best long-term supply assurance?

A: Both the DR1040-330-R and CDRH104RNP-330NC are classified as active products with current manufacturing status. The CDRH104RNP-330NC demonstrates significantly higher inventory availability at 421,400 pieces compared to 2,000 pieces for the DR1040-330-R. For long-term supply assurance, the CDRH104RNP-330NC from Sumida provides greater availability depth. However, if single-source manufacturer continuity with Eaton is required, the DR1040-330-R is the appropriate choice.

Q: Are both substitutes RoHS compliant?

A: Yes, both substitute parts are RoHS3 compliant. The DR1040-330-R explicitly states ROHS3 Compliant status. The CDRH104RNP-330NC also carries ROHS3 Compliant certification. The original CD1-330-R RoHS status is not specified in the provided data. Both substitutes meet current regulatory requirements for restricted substances in electrical and electronic equipment.

Q: What packaging options are available for each substitute?

A: The DR1040-330-R is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. The CDRH104RNP-330NC is available in both Cut Tape (CT) and Digi-Reel® formats, providing flexibility for both manual and automated assembly workflows. The original CD1-330-R packaging format is not specified. Selection between substitutes may depend on assembly process requirements and procurement workflow preferences.

Q: Can the CDRH104RNP-330NC be used in applications requiring the full -40°C to 85°C temperature range?

A: The CDRH104RNP-330NC is rated for -40°C to 100°C, which exceeds the original CD1-330-R specification of -40°C to 85°C. Therefore, this substitute fully covers the original temperature range with additional margin to 100°C. For applications requiring operation above 85°C but below 100°C, the CDRH104RNP-330NC is suitable. For applications requiring operation above 100°C, the DR1040-330-R rated to 125°C should be selected.

Q: Is the DC resistance specification identical across all three parts?

A: Yes, all three parts specify a maximum DC resistance of 93 mOhm. This parameter is critical for power loss calculations and thermal performance. The identical specification ensures equivalent resistive heating characteristics across substitutes, provided current levels remain within the respective continuous current ratings.