CDH53-121JC Equivalent & Substitute Parts

Part Overview

The CDH53-121JC is a 120 µH unshielded drum core wirewound inductor manufactured by Sumida America Components Inc. This surface mount component is rated for 340 mA continuous current with a maximum DC resistance of 1.8Ohm and operates across the temperature range of -30°C to 100°C. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The CDH53 series provides ferrite core construction suitable for applications requiring fixed inductance values in compact nonstandard packages.

Substiute Parts

CDH53-121JC

Sumida America Components Inc.In Stock: 983CDH53-121JC Datasheet

Current PartRFQ

CDH53NP-121JC

Sumida America Components Inc.In Stock: 796CDH53NP-121JC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDH53-121JC is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 120 µH
• Inductance tolerance: ±5%
• Current rating: 340 mA minimum
• DC resistance: 1.8Ohm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

• Mounting type: Surface Mount
• Package dimensions: 6.00mm L × 5.20mm W
• Height (seated): 3.20mm maximum
• Series designation: CDH53

The CDH53NP-121JC qualifies as a direct substitute based on identical electrical specifications and mechanical form factor. The primary distinction between the main part and substitute is product status (obsolete versus active) and packaging configuration (bulk versus tape & reel), along with enhanced compliance certifications and extended operating temperature range on the substitute.

Parameter Comparison

Engineering Selection Recommendations

The CDH53NP-121JC is the direct functional equivalent for the obsolete CDH53-121JC. Selection of the substitute is supported by the following engineering factors:

Product Status: The CDH53-121JC is classified as obsolete, creating supply chain risk. The CDH53NP-121JC maintains active product status with confirmed inventory availability (691 pcs), ensuring long-term procurement viability.

Regulatory Compliance: The CDH53NP-121JC achieves ROHS3 compliance, whereas the main part is non-compliant. For applications subject to RoHS directives or customer compliance requirements, the substitute satisfies regulatory obligations.

Operating Temperature Range: The substitute extends the minimum operating temperature from -30°C to -40°C, providing enhanced performance margin in low-temperature environments without compromising upper temperature limits.

Electrical and Mechanical Equivalence: All critical electrical parameters (inductance, current rating, DC resistance, core material, shielding) and mechanical dimensions (package footprint, height, mounting type) are identical between the main part and substitute, ensuring direct circuit compatibility.

Packaging Consideration: The substitute is supplied in tape & reel format, which is standard for automated assembly processes. If bulk packaging is required, this represents the only operational difference and does not affect electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can CDH53NP-121JC be used as a direct replacement for CDH53-121JC in existing designs?

A: Yes. The CDH53NP-121JC is electrically and mechanically identical to the CDH53-121JC across all specified parameters: 120 µH inductance, 340 mA current rating, 1.8Ohm DC resistance, ferrite core, unshielded configuration, and identical package dimensions (6.00 × 5.20 × 3.20 mm). No circuit modifications are required.

Q: What is the difference between CDH53-121JC and CDH53NP-121JC?

A: The primary differences are: (1) Product Status—CDH53-121JC is obsolete while CDH53NP-121JC is active; (2) RoHS Compliance—CDH53NP-121JC is ROHS3 compliant; (3) Operating Temperature—CDH53NP-121JC extends to -40°C minimum versus -30°C; (4) Packaging—CDH53NP-121JC is supplied in tape & reel format versus bulk. All electrical and mechanical specifications are identical.

Q: Is the tape & reel packaging of CDH53NP-121JC compatible with my assembly process?

A: Tape & reel packaging is the standard format for automated surface mount assembly. If your process requires bulk packaging, contact your supplier regarding alternative packaging options. The component itself is identical regardless of packaging format.

Q: Does the extended temperature range of CDH53NP-121JC affect circuit performance?

A: No. The extended minimum operating temperature (-40°C versus -30°C) provides additional performance margin in low-temperature applications. The upper temperature limit remains 100°C. Extended temperature capability does not degrade performance at standard operating temperatures.

Q: Are there any compliance or certification differences between these parts?

A: Yes. The CDH53NP-121JC is ROHS3 compliant, while the CDH53-121JC is non-compliant. Both parts are EAR99 classified and REACH unaffected. For applications requiring RoHS compliance, the substitute is the appropriate selection.

Q: What inventory status should I expect for each part?

A: CDH53-121JC (obsolete) has 905 pcs in stock. CDH53NP-121JC (active) has 691 pcs in stock. Given the obsolete status of the main part, the active substitute is recommended for new procurement to ensure long-term availability.