HCP0704-1R8-R Equivalent & Substitute Parts

Part Overview

The HCP0704-1R8-R is a 1.8 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 8.5 A continuous current with 11 mOhm DC resistance and operates across the temperature range of -40°C to 155°C. The part maintains Active product status and is RoHS Compliant with unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

HCP0704-1R8-R

Eaton - Electronics DivisionIn Stock: 1385HCP0704-1R8-R Datasheet

Current PartRFQ

PG0083.182NL

Pulse ElectronicsIn Stock: 4134PG0083.182NL Datasheet

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PG0083.182NLT

Pulse ElectronicsIn Stock: 2303PG0083.182NLT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCP0704-1R8-R are identified based on the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value: 1.8 µH (within ±25% tolerance band)
• Current rating: minimum 8.0 A continuous
• Saturation current: 13 A or greater
• Inductance test frequency: 100 kHz

Mechanical Compatibility Criteria:

• Surface mount package type
• Physical footprint: 6.80 x 6.80 mm base dimensions
• Height compatibility: maximum seated height 4.20 mm

Environmental & Compliance Criteria:

• Operating temperature range: minimum -40°C to 95°C
• RoHS compliance status
• Moisture sensitivity level: 1 (Unlimited)

The substitute parts identified (PG0083.182NL and PG0083.182NLT) maintain electrical equivalence in inductance, tolerance, saturation current, and test frequency. Both substitute parts are manufactured by Pulse Electronics and share identical electrical specifications with the main part. Differences exist in shielding configuration, DC resistance, current rating, and operating temperature range, which are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

HCP0704-1R8-R (Primary Part): The HCP0704-1R8-R is the specified component with Active product status. This shielded inductor provides the highest current rating (8.5 A) and lowest DC resistance (11 mOhm) among the three options. The extended operating temperature range (-40°C to 155°C) supports high-temperature applications. RoHS Compliant certification and Tape & Reel packaging are standard. This part is suitable for applications requiring shielded construction and maximum thermal performance.

PG0083.182NLT (Preferred Substitute): The PG0083.182NLT maintains identical packaging format (Tape & Reel) to the main part, enabling direct integration into existing supply chain processes. This Pulse Electronics component is ROHS3 Compliant and shares the same saturation current (13 A) and inductance tolerance (±25%). The unshielded configuration and 16 mOhm maximum DC resistance represent trade-offs in electromagnetic isolation and power dissipation. The operating temperature range (-40°C to 95°C) is reduced compared to the main part. Current rating is 8 A, which is 0.5 A lower than the HCP0704-1R8-R.

PG0083.182NL (Alternative Substitute): The PG0083.182NL is functionally equivalent to PG0083.182NLT with identical electrical specifications. The primary distinction is packaging format (Tray instead of Tape & Reel), which may require alternative handling and integration procedures. This option is suitable for applications where packaging format flexibility is acceptable and cost optimization is prioritized.

Frequently Asked Questions (FAQ)

Q: Can PG0083.182NL or PG0083.182NLT be used as direct replacements for HCP0704-1R8-R?

A: Both Pulse Electronics parts maintain the same inductance value (1.8 µH), tolerance (±25%), saturation current (13 A), and test frequency (100 kHz). Physical footprint dimensions (6.80 x 6.80 mm) and surface mount configuration are identical. However, three differences require evaluation: (1) The substitute parts are unshielded versus shielded on the main part; (2) DC resistance is higher (16 mOhm max versus 11 mOhm); (3) Operating temperature range is reduced (-40°C to 95°C versus -40°C to 155°C). Substitution is valid only when these differences do not conflict with circuit requirements.

Q: What is the impact of the shielding difference between HCP0704-1R8-R and the Pulse Electronics substitutes?

A: The HCP0704-1R8-R features shielded drum core construction, while PG0083.182NL and PG0083.182NLT are unshielded wirewound inductors. Shielded inductors reduce electromagnetic interference (EMI) coupling to adjacent circuit elements. Unshielded inductors may exhibit increased magnetic field radiation. Selection between shielded and unshielded depends on circuit layout, proximity to sensitive components, and EMI specifications.

Q: How does the DC resistance difference affect circuit performance?

A: The HCP0704-1R8-R has 11 mOhm DC resistance, while substitute parts specify 16 mOhm maximum. At the rated current of 8 A, the HCP0704-1R8-R dissipates approximately 0.704 W (I²R = 8² × 0.011), while the substitute parts dissipate up to 1.024 W (8² × 0.016). This 45% increase in power dissipation may require thermal management evaluation in high-current or continuous-duty applications.

Q: Are the operating temperature ranges interchangeable?

A: The HCP0704-1R8-R operates from -40°C to 155°C, while both Pulse Electronics substitutes operate from -40°C to 95°C. The main part supports 60°C higher maximum temperature. Applications requiring operation above 95°C must use the HCP0704-1R8-R. For applications within the -40°C to 95°C range, both parts are thermally compatible.

Q: What is the difference between PG0083.182NL and PG0083.182NLT?

A: Both parts are electrically and mechanically identical. The sole difference is packaging format: PG0083.182NL is supplied in Tray packaging, while PG0083.182NLT is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes. Tray packaging may require manual handling or alternative feeder systems. Selection depends on manufacturing process requirements.

Q: Is the 0.5 A current rating difference (8.5 A versus 8 A) significant?

A: The HCP0704-1R8-R is rated for 8.5 A continuous current, while substitute parts are rated for 8 A. For applications operating at or above 8.25 A, the main part provides additional margin. For applications operating below 8 A, both parts are equivalent. Saturation current (13 A) is identical across all three parts, indicating similar core material and design.

Q: Are all three parts RoHS compliant?

A: Yes. The HCP0704-1R8-R is RoHS Compliant. Both Pulse Electronics substitutes are ROHS3 Compliant. Both certifications indicate compliance with Restriction of Hazardous Substances directives. ROHS3 represents the current revision standard. All three parts are suitable for applications requiring RoHS compliance.

Q: What is the height difference between the main part and substitutes?

A: The HCP0704-1R8-R has a maximum seated height of 4.20 mm, while both Pulse Electronics substitutes have a maximum seated height of 4.00 mm. The 0.20 mm difference is negligible for most PCB layout applications. Both are compatible with standard surface mount assembly processes and clearance specifications.