HCM1305-R33-R Equivalent & Substitute Parts

Part Overview

The HCM1305-R33-R is a 330 nH shielded drum core wirewound inductor manufactured by Eaton Electronics Division. Rated for 42 A continuous current with 0.92 mOhm maximum DC resistance, this component is designed for surface mount applications requiring low-inductance, high-current filtering and energy storage in power conversion circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts may be required due to inventory constraints, packaging format preferences, or specific thermal and resistance performance requirements in system design.

Substiute Parts

HCM1305-R33-R

Eaton - Electronics DivisionIn Stock: 869HCM1305-R33-R Datasheet

Current PartRFQ

IHLP5050EZERR33M01

Vishay DaleIn Stock: 1399IHLP5050EZERR33M01 Datasheet

DirectRFQ

PA4343.331NLT

Pulse ElectronicsIn Stock: 1510PA4343.331NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCM1305-R33-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 nH (±20% tolerance band)
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Regulatory compliance: RoHS3 compliant

Secondary Compatibility Factors:

• Current rating: Minimum 42 A continuous
• DC resistance: Maximum 0.92 mOhm preferred; up to 1.1 mOhm acceptable with thermal analysis
• Saturation current: Minimum 68 A
• Operating temperature: -40°C to 125°C minimum range
• Inductance test frequency: 100 kHz

The substitute parts listed below satisfy all primary criteria and maintain compatibility within the specified electrical and thermal operating envelope.

Parameter Comparison

Engineering Selection Recommendations

IHLP5050EZERR33M01 (Vishay Dale): This substitute maintains identical current rating (42 A) and saturation current (80 A) specifications. DC resistance increases to 1.1 mOhm maximum, representing a 19.6% increase over the primary part. Operating temperature range matches the HCM1305-R33-R (-55°C to 125°C). RoHS3 compliance and unlimited moisture sensitivity rating are maintained. This part is suitable for applications where the slightly elevated DC resistance is acceptable within thermal budget constraints.

PA4343.331NLT (Pulse Electronics): This substitute provides superior DC resistance performance at 0.8 mOhm maximum, representing a 13% improvement over the primary part. Current rating increases to 46 A, providing additional margin. Saturation current is specified at 68 A, which is 15% lower than the primary part. Operating temperature minimum is -40°C, restricting use in applications requiring -55°C operation. AEC-Q200 automotive qualification is provided. This part is suitable for applications prioritizing low DC resistance and higher continuous current capacity within the -40°C to 125°C range.

Both substitutes maintain RoHS3 compliance, shielded construction, surface mount configuration, and 330 nH inductance specification at 100 kHz test frequency.

Frequently Asked Questions (FAQ)

Q: Can IHLP5050EZERR33M01 be used as a direct replacement for HCM1305-R33-R?

A: Yes, within thermal design constraints. Both parts share identical inductance (330 nH), current rating (42 A), saturation current (80 A), and operating temperature range (-55°C to 125°C). The IHLP5050EZERR33M01 exhibits 1.1 mOhm maximum DC resistance compared to 0.92 mOhm for the HCM1305-R33-R. This 0.18 mOhm difference increases power dissipation proportionally to current squared. System thermal analysis must confirm acceptable junction temperatures at maximum operating current.

Q: What are the physical dimension differences between these parts?

A: HCM1305-R33-R measures 13.30 mm L × 12.20 mm W × 5.00 mm H. IHLP5050EZERR33M01 measures 13.20 mm L × 12.90 mm W × 5.00 mm H. PA4343.331NLT measures 14.00 mm L × 12.80 mm W × 6.50 mm H. Height differences of 1.5 mm for the Pulse part may affect PCB layout and thermal management in space-constrained applications.

Q: Is PA4343.331NLT suitable for -55°C operation?

A: No. PA4343.331NLT specifies operating temperature from -40°C to 125°C. Applications requiring -55°C minimum operation must use HCM1305-R33-R or IHLP5050EZERR33M01.

Q: Which substitute offers the lowest DC resistance?

A: PA4343.331NLT provides 0.8 mOhm maximum DC resistance, representing the lowest value among the three parts. This reduces I²R losses by approximately 13% compared to the primary part at equivalent current levels.

Q: Are all three parts RoHS3 compliant?

A: Yes. HCM1305-R33-R, IHLP5050EZERR33M01, and PA4343.331NLT are all RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the saturation current difference impact?

A: HCM1305-R33-R and IHLP5050EZERR33M01 both specify 80 A saturation current. PA4343.331NLT specifies 68 A saturation current, which is 12 A lower. Applications operating near saturation limits must account for this 15% reduction in saturation margin.