HC8-150-R Equivalent & Substitute Parts

Part Overview

The HC8-150-R is a 15 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 4.1 A continuous current with a maximum DC resistance of 68.6 mOhm and operates across the temperature range of -40°C to 155°C. The part is ROHS3 compliant and carries an MSL rating of 1 (Unlimited). As an active product with 1149 pieces in stock, the HC8-150-R serves applications requiring fixed inductance in compact nonstandard packages. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options when the primary part is unavailable or when application requirements necessitate different electrical or mechanical characteristics.

Substiute Parts

HC8-150-R

Eaton - Electronics DivisionIn Stock: 1185HC8-150-R Datasheet

Current PartRFQ

SRP1038A-150M

Bourns Inc.In Stock: 15605SRP1038A-150M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC8-150-R is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 15 µH (exact match required)
• Inductance tolerance: ±20% (matching tolerance band)
• Mounting type: Surface Mount (nonstandard package)
• Core type: Drum Core, Wirewound (functional equivalence)
• Inductance test frequency: 100 kHz (measurement standard alignment)

Secondary Compatibility Parameters:

• Current rating: Substitute must equal or exceed 4.1 A
• DC resistance: Substitute must not exceed 68.6 mOhm maximum
• Operating temperature range: Substitute must cover or exceed -40°C to 155°C
• RoHS compliance: ROHS3 Compliant (regulatory requirement)
• MSL rating: 1 (Unlimited) or equivalent moisture sensitivity

Mechanical Compatibility:

• Package dimensions must accommodate the nonstandard form factor
• Height seated maximum: 0.157" (4.00mm) or less
• Surface mount footprint compatibility

The SRP1038A-150M from Bourns Inc. qualifies as a direct substitute based on matching inductance value, tolerance, mounting type, and core configuration. While the substitute exhibits different core material (carbonyl powder versus iron powder), higher current rating (6.25 A versus 4.1 A), lower DC resistance (45 mOhm versus 68.6 mOhm), and shielded construction, these differences represent performance enhancements within the allowed parameter space for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the HC8-150-R and SRP1038A-150M are active products with ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory alignment and moisture handling compatibility. The HC8-150-R remains the primary selection when the specific unshielded iron powder core construction is required by circuit design or EMI considerations. The SRP1038A-150M serves as a direct functional substitute when higher current capacity (6.25 A versus 4.1 A), lower DC resistance (45 mOhm versus 68.6 mOhm), or shielded construction provides circuit advantages. The SRP1038A-150M's AEC-Q200 rating indicates automotive-grade qualification, which may be relevant for applications requiring enhanced reliability documentation. The operating temperature range difference (150°C maximum for SRP1038A-150M versus 155°C for HC8-150-R) is negligible for most industrial applications but should be verified for high-temperature edge cases. Mechanical compatibility is confirmed through matching nonstandard package dimensions and identical 4.00mm seated height specifications.

Frequently Asked Questions (FAQ)

Q: Can the SRP1038A-150M directly replace the HC8-150-R in all applications?

A: The SRP1038A-150M meets all primary substitution criteria: identical 15 µH inductance, ±20% tolerance, surface mount nonstandard package, and drum core wirewound construction. However, the shielded versus unshielded difference and core material variation (carbonyl powder versus iron powder) may affect circuit performance in EMI-sensitive applications. Verification of circuit behavior is necessary when shielding characteristics differ from the original design intent.

Q: What is the significance of the lower DC resistance in the SRP1038A-150M?

A: The SRP1038A-150M exhibits 45 mOhm maximum DC resistance compared to 68.6 mOhm for the HC8-150-R. This 34% reduction in resistance decreases I²R losses and heat generation, improving efficiency in current-carrying applications. This represents a performance enhancement within the allowed parameter space and does not compromise compatibility.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts use nonstandard packages with identical 4.00mm seated height. The HC8-150-R measures 10.90mm L x 10.40mm W, while the SRP1038A-150M measures 11.00mm L x 10.00mm W. The dimensional difference is minimal (0.10mm length increase, 0.40mm width decrease). PCB footprint verification is required to confirm mechanical fit, particularly in space-constrained layouts.

Q: What does the shielded construction of the SRP1038A-150M provide?

A: Shielded construction reduces electromagnetic radiation and susceptibility to external magnetic fields. This characteristic benefits applications requiring reduced EMI coupling or operation in electromagnetically noisy environments. If the original HC8-150-R design relied on unshielded characteristics for specific circuit behavior, the shielded substitute may alter performance.

Q: How do the saturation current ratings compare?

A: The HC8-150-R saturates at 7.4 A, while the SRP1038A-150M saturates at 10 A. The substitute provides 35% higher saturation margin, reducing the risk of core saturation in transient or peak current conditions. This represents an operational advantage for applications with current spikes or dynamic loading.

Q: Are both parts suitable for automotive applications?

A: The SRP1038A-150M carries AEC-Q200 automotive-grade qualification, indicating compliance with automotive reliability and environmental standards. The HC8-150-R does not list AEC-Q200 certification. For automotive applications, the SRP1038A-150M provides documented automotive-grade assurance.

Q: What is the difference between iron powder and carbonyl powder cores?

A: Iron powder cores (HC8-150-R) and carbonyl powder cores (SRP1038A-150M) exhibit different permeability, loss characteristics, and frequency response. These material differences affect Q factor, self-resonant frequency, and thermal behavior. The SRP1038A-150M specifies Q @ 100kHz of 20 and self-resonant frequency of 9 MHz, while the HC8-150-R does not provide these specifications. Material selection depends on specific frequency response and loss requirements.

Q: Can I use the SRP1038A-150M if my circuit requires the unshielded HC8-150-R?

A: Substitution requires verification that shielded construction does not degrade circuit performance. Shielding affects magnetic field distribution and coupling characteristics. Applications sensitive to magnetic coupling or requiring specific unshielded behavior must be evaluated before substitution.