HCM1305-2R2-R Equivalent & Substitute Parts

Part Overview

The HCM1305-2R2-R is a 2.2 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. Rated for 20 A continuous current with a maximum DC resistance of 5.29 mOhm, this component is designed for surface mount applications in power conversion and filtering circuits. The part is currently active in production with 9017 units in stock. Substitute parts are identified to provide design flexibility, supply chain alternatives, and performance optimization options while maintaining electrical and mechanical compatibility within specified tolerances.

Substiute Parts

HCM1305-2R2-R

Eaton - Electronics DivisionIn Stock: 9118HCM1305-2R2-R Datasheet

Current PartRFQ

IHLP5050EZER2R2M01

Vishay DaleIn Stock: 1359IHLP5050EZER2R2M01 Datasheet

DirectRFQ

PA4343.222NLT

Pulse ElectronicsIn Stock: 3334PA4343.222NLT Datasheet

DirectRFQ

SRP1245A-2R2M

Bourns Inc.In Stock: 7060SRP1245A-2R2M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCM1305-2R2-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 2.2 µH (±20% tolerance band)
• Current rating: minimum 20 A continuous
• Saturation current: minimum 32 A
• Shielding: required
• Mounting type: Surface Mount
• Operating temperature range: must encompass -55°C to 125°C or higher
• RoHS3 compliance: required
• MSL rating: 1 (Unlimited)

Secondary Compatibility Factors:

• DC resistance: maximum 5.5 mOhm (slight variance acceptable within thermal and efficiency margins)
• Package dimensions: nonstandard form factor with height maximum 5.00 mm seated
• Inductance test frequency: 100 kHz

All three substitute parts meet or exceed these criteria. Variations in core material (drum core wirewound versus molded construction), saturation current ratings above 32 A, and operating temperature ranges extending beyond the specified minimum are acceptable enhancements that do not compromise substitution compatibility.

Parameter Comparison

Engineering Selection Recommendations

HCM1305-2R2-R (Primary Reference) Active product status with 9017 units in stock. ROHS3 compliant. Drum core wirewound construction with iron powder core material. Operates across -55°C to 125°C temperature range. Suitable for applications requiring extended low-temperature performance.

IHLP5050EZER2R2M01 (Vishay Dale) Active product with 1250 units available. Molded construction offers compact integration. Identical temperature range (-55°C to 125°C) and saturation current (32 A) to primary part. DC resistance of 5.5 mOhm is within acceptable thermal margin. Height matches at 5.00 mm. ROHS3 compliant. Suitable for space-constrained layouts where molded inductor construction is preferred.

PA4343.222NLT (Pulse Electronics) Active product with 3270 units in stock. Molded construction. Higher current rating (22 A) and saturation current (37 A) provide design margin. Superior DC resistance of 4.2 mOhm reduces thermal dissipation. AEC-Q200 rated for automotive applications. Operating temperature limited to -40°C minimum (does not extend to -55°C). Height of 6.50 mm exceeds primary part specification. ROHS3 compliant. Select when higher current capacity and lower losses are required and -40°C minimum temperature is acceptable.

SRP1245A-2R2M (Bourns Inc.) Active product with 7018 units available. Drum core wirewound construction with carbonyl powder core. Matches primary part current rating (20 A) and saturation current (32 A). DC resistance of 5.5 mOhm is within acceptable margin. Extended operating temperature range (-40°C to 150°C) provides high-temperature capability. AEC-Q200 rated. Q factor specified at 100 kHz (20). Self-resonant frequency 24 MHz. Height matches at 5.00 mm. ROHS3 compliant. Select for applications requiring extended high-temperature operation or automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can PA4343.222NLT substitute for HCM1305-2R2-R in all applications?

A: PA4343.222NLT is electrically compatible for applications operating at -40°C or above. It is not suitable for circuits requiring -55°C minimum temperature operation. The 6.50 mm seated height exceeds the 5.00 mm specification of the primary part and may require PCB layout modification. Select this part only when the higher current rating (22 A) and lower DC resistance (4.2 mOhm) provide design benefits and temperature requirements are met.

Q: What is the difference between drum core wirewound and molded inductor construction?

A: Drum core wirewound inductors (HCM1305-2R2-R, SRP1245A-2R2M) use wire wound around a cylindrical core material. Molded inductors (IHLP5050EZER2R2M01, PA4343.222NLT) encapsulate the core in a molded compound. Both constructions are shielded and meet the specified electrical parameters. Molded construction typically offers better mechanical robustness and compact integration. Wirewound construction may provide lower parasitic capacitance in some applications.

Q: Are all substitute parts available in the same packaging format?

A: All parts are available in Tape & Reel (TR) packaging suitable for automated assembly. IHLP5050EZER2R2M01 is also available in Cut Tape (CT) & Digi-Reel® format. Packaging format does not affect electrical or mechanical compatibility.

Q: Which substitute part has the lowest DC resistance?

A: PA4343.222NLT has the lowest maximum DC resistance at 4.2 mOhm, compared to 5.29 mOhm for the primary part. This results in lower resistive losses and reduced thermal dissipation. However, this part has a higher seated height (6.50 mm) and limited low-temperature operation (-40°C minimum).

Q: Do all parts meet RoHS3 compliance?

A: Yes. HCM1305-2R2-R, IHLP5050EZER2R2M01, PA4343.222NLT, and SRP1245A-2R2M are all ROHS3 compliant. All parts have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Which substitute parts are AEC-Q200 rated?

A: PA4343.222NLT and SRP1245A-2R2M carry AEC-Q200 automotive qualification. HCM1305-2R2-R and IHLP5050EZER2R2M01 do not list AEC-Q200 rating. Select AEC-Q200 rated parts for automotive or high-reliability applications requiring this qualification.

Q: Can I use SRP1245A-2R2M in applications requiring -55°C operation?

A: Yes. SRP1245A-2R2M operates from -40°C to 150°C, which encompasses the -55°C to 125°C range of the primary part. The extended low-temperature capability of the primary part (-55°C) is not matched by SRP1245A-2R2M. However, for applications requiring only -40°C minimum, SRP1245A-2R2M is fully compatible and offers extended high-temperature operation to 150°C.