HC8-330-R Equivalent & Substitute Parts Reference

Part Overview

The HC8-330-R is a 33 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 2.7 A continuous current with a maximum DC resistance of 154 mOhm and operates across the temperature range of -40°C to 155°C. The part is ROHS3 compliant and carries an active product status with 1125 units in current inventory.

Substitute parts are identified when equivalent inductance values, current ratings, and core materials meet the electrical and mechanical requirements of the application while maintaining compatibility with the nonstandard package dimensions and surface mount configuration.

Substiute Parts

HC8-330-R

Eaton - Electronics DivisionIn Stock: 1203HC8-330-R Datasheet

Current PartRFQ

SRP1038A-330M

Bourns Inc.In Stock: 6592SRP1038A-330M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HC8-330-R is determined by the following criteria:

Primary Electrical Parameters:

• Inductance value of 33 µH with ±20% tolerance
• Current rating sufficient for application requirements (minimum 2.7 A continuous)
• DC resistance within acceptable operating parameters
• Saturation current rating compatible with circuit protection schemes

Mechanical & Environmental Parameters:

• Surface mount configuration with nonstandard package dimensions
• Operating temperature range compatibility (-40°C minimum to 150°C minimum upper limit)
• Drum core wirewound construction
• ROHS3 compliance for regulatory alignment

Packaging Requirements:

• Tape & Reel (TR) format for automated assembly
• Moisture Sensitivity Level 1 (Unlimited) for storage flexibility

The SRP1038A-330M from Bourns Inc. qualifies as a direct substitute based on matching inductance specification, compatible current ratings, surface mount configuration, and regulatory compliance. Differences in core material (carbonyl powder versus iron powder), shielding configuration, and DC resistance represent trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

HC8-330-R Selection Criteria: The HC8-330-R remains the primary choice for applications requiring unshielded inductor configuration with extended upper temperature operation to 155°C. The iron powder core material and unshielded design are suitable for applications where electromagnetic coupling or thermal performance at elevated temperatures is a design requirement. ROHS3 compliance and active product status support long-term supply chain stability.

SRP1038A-330M Selection Criteria: The SRP1038A-330M provides equivalent inductance with improved current handling capacity (3.5 A versus 2.7 A) and reduced DC resistance (112 mOhm versus 154 mOhm), resulting in lower power dissipation. The shielded configuration reduces electromagnetic interference in sensitive circuits. Carbonyl powder core material and AEC-Q200 automotive qualification provide additional performance characteristics. The maximum operating temperature of 150°C is suitable for most industrial and commercial applications. ROHS3 compliance and REACH unaffected status confirm regulatory alignment.

Substitution Feasibility: Direct substitution is feasible when the application operates below 150°C and electromagnetic shielding does not conflict with circuit design. The higher current rating of the SRP1038A-330M provides design margin in current-limited applications. Lower DC resistance reduces thermal loading and improves efficiency.

Frequently Asked Questions (FAQ)

Q: Can the SRP1038A-330M replace the HC8-330-R in all applications?

A: Direct substitution is feasible for applications operating at or below 150°C. The SRP1038A-330M provides higher current capacity and lower DC resistance. The shielded configuration may require circuit layout evaluation if the original design relied on unshielded coupling characteristics.

Q: What is the impact of different core materials (iron powder versus carbonyl powder)?

A: Iron powder cores (HC8-330-R) and carbonyl powder cores (SRP1038A-330M) exhibit different frequency response and temperature stability characteristics. Both materials support the specified 33 µH inductance and ±20% tolerance. Selection depends on application frequency response requirements and thermal environment.

Q: Does the shielded configuration of the SRP1038A-330M affect circuit performance?

A: Shielding reduces radiated electromagnetic interference and susceptibility to external fields. For applications where the original unshielded design was intentional for coupling purposes, shielding may alter circuit behavior. Circuit-level evaluation is necessary for sensitive analog or RF applications.

Q: Are the package dimensions compatible between these parts?

A: Both parts use nonstandard surface mount packages with similar footprints. HC8-330-R dimensions are 10.90mm L × 10.40mm W × 4.00mm H. SRP1038A-330M dimensions are 11.00mm L × 10.00mm W × 4.00mm H. Minor dimensional differences require PCB layout verification for automated assembly compatibility.

Q: What is the significance of the AEC-Q200 rating on the SRP1038A-330M?

A: AEC-Q200 is an automotive electronics qualification standard. This certification indicates the SRP1038A-330M meets automotive reliability and performance requirements. For non-automotive applications, this represents additional quality assurance but is not a requirement for substitution.

Q: How do the saturation current ratings compare?

A: HC8-330-R saturation current is 5.1 A; SRP1038A-330M saturation current is 5.0 A. Both values are comparable and exceed the continuous current ratings, providing adequate margin for transient current conditions.

Q: Is inventory availability a factor in substitution decisions?

A: HC8-330-R has 1125 units in stock; SRP1038A-330M has 6580 units in stock. Higher inventory of the substitute part may support extended production schedules and reduce supply chain risk.