CDH53-820JC Equivalent & Substitute Parts

Part Overview

The CDH53-820JC is an 82 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 390 mA continuous current with a maximum DC resistance of 1.34 Ohm and operates across the temperature range of -30°C to 100°C. The part is classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and repair applications.

Key Parameters

Parameter	Value
Inductance	82 µH
Inductance Tolerance	±5%
Current Rating	390 mA
DC Resistance (DCR)	1.34 Ohm Max
Core Material	Ferrite
Shielding	Unshielded
Mounting Type	Surface Mount
Physical Dimensions	6.00mm L x 5.20mm W x 3.20mm H
Inductance Test Frequency	1 kHz

Substitute Part Grouping Explanation

Substitution of the CDH53-820JC is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Inductance value: 82 µH
Inductance tolerance: ±5%
Current rating: 390 mA minimum
DC resistance: 1.34 Ohm maximum
Core material: Ferrite
Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

Mounting type: Surface Mount
Physical footprint: 6.00mm x 5.20mm x 3.20mm maximum height
Package classification: Nonstandard

Operational Equivalence Criteria:

Inductance measurement frequency: 1 kHz
Temperature operating range: Minimum -30°C to 100°C

The CDH53NP-820JC qualifies as a direct substitute based on identical electrical specifications, core construction, and physical dimensions. The primary distinction is product status and packaging configuration.

Parameter Comparison

Parameter	CDH53-820JC	CDH53NP-820JC	Match Status
Inductance	82 µH	82 µH	Identical
Inductance Tolerance	±5%	±5%	Identical
Current Rating (Amps)	390 mA	390 mA	Identical
DC Resistance (DCR)	1.34 Ohm Max	1.34 Ohm Max	Identical
Core Material	Ferrite	Ferrite	Identical
Shielding	Unshielded	Unshielded	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Size / Dimension	6.00mm L x 5.20mm W	6.00mm L x 5.20mm W	Identical
Height - Seated (Max)	3.20mm	3.20mm	Identical
Inductance Frequency - Test	1 kHz	1 kHz	Identical
Operating Temperature	-30°C ~ 100°C	-40°C ~ 100°C	Substitute has wider range
Product Status	Obsolete	Active	Substitute is active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute is compliant
Packaging	Bulk	Tape & Reel (TR)	Different packaging

Engineering Selection Recommendations

The CDH53NP-820JC is the direct functional equivalent of the CDH53-820JC and is the appropriate selection for new designs and production applications. The substitute part maintains identical electrical performance and physical compatibility while offering the following advantages:

Product Status: The CDH53NP-820JC carries active product status, ensuring continued availability and manufacturer support, whereas the CDH53-820JC is obsolete and subject to supply discontinuation.

Regulatory Compliance: The CDH53NP-820JC is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components in most jurisdictions. The original CDH53-820JC is non-compliant and may not satisfy procurement specifications for new applications.

Temperature Range: The CDH53NP-820JC extends the minimum operating temperature to -40°C, providing enhanced performance margin in cold environment applications compared to the -30°C minimum of the original part.

Packaging Configuration: The CDH53NP-820JC is supplied in Tape & Reel format, which is standard for automated assembly processes. The original part's bulk packaging may require manual handling and is less suitable for high-volume manufacturing.

For repair and maintenance of existing equipment using CDH53-820JC, the CDH53NP-820JC provides full electrical and mechanical compatibility with no circuit redesign required.

Frequently Asked Questions (FAQ)

Q: Can CDH53NP-820JC be used as a direct replacement for CDH53-820JC in existing designs?

A: Yes. The CDH53NP-820JC is electrically and mechanically identical to the CDH53-820JC across all critical parameters: inductance value, tolerance, current rating, DC resistance, core material, shielding, and physical dimensions. No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: The primary differences are product status, regulatory compliance, and packaging. The CDH53-820JC is obsolete and RoHS non-compliant, while the CDH53NP-820JC is an active product with ROHS3 compliance. The CDH53NP-820JC is packaged in Tape & Reel format versus bulk packaging for the original part.

Q: Does the extended temperature range of CDH53NP-820JC affect circuit performance?

A: No. The extended minimum operating temperature of -40°C on the CDH53NP-820JC provides additional performance margin without affecting operation within the original -30°C to 100°C range. This represents an improvement in environmental tolerance.

Q: Are there any compatibility issues with PCB assembly equipment?

A: No. Both parts are surface mount components with identical footprints (6.00mm x 5.20mm x 3.20mm). The CDH53NP-820JC in Tape & Reel packaging is optimized for automated pick-and-place assembly, while the original bulk packaging requires manual placement.

Q: What is the significance of RoHS3 compliance on the CDH53NP-820JC?

A: ROHS3 compliance indicates the component meets current European Union Restriction of Hazardous Substances regulations. This is required for many commercial and industrial applications and is mandatory for products sold in EU markets. The original CDH53-820JC does not meet this requirement.

Q: Can both parts be used interchangeably in the same circuit?

A: Yes. The electrical specifications are identical, and the physical dimensions are identical. The parts are fully interchangeable from both electrical and mechanical perspectives.

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