HCP0704-1R0-R Equivalent & Substitute Parts

Part Overview

The HCP0704-1R0-R is a 1 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 12 A continuous current with a DC resistance of 6.2 mOhm and operates across the temperature range of -40°C to 155°C. The part is RoHS Compliant and currently Active in production status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Substiute Parts

HCP0704-1R0-R

Eaton - Electronics DivisionIn Stock: 1894HCP0704-1R0-R Datasheet

Current PartRFQ

SRP6540-1R0M

Bourns Inc.In Stock: 65864SRP6540-1R0M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCP0704-1R0-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 µH (exact match required)
• Current rating: 12 A (minimum requirement)
• Type: Drum core, wirewound construction
• Core material: Iron powder
• Shielding: Shielded configuration
• Mounting: Surface mount
• Packaging: Tape & Reel format
• Inductance test frequency: 100 kHz

Secondary Compatibility Parameters:

• DC resistance tolerance within acceptable operating limits
• Saturation current rating sufficient for application requirements
• Operating temperature range coverage
• RoHS and REACH compliance status
• Moisture sensitivity level classification

The SRP6540-1R0M from Bourns Inc. qualifies as a direct substitute based on matching inductance, current rating, core type, shielding, and mounting specifications. Variations in DC resistance, saturation current, temperature range, and tolerance are within acceptable engineering parameters for equivalent component selection.

Parameter Comparison

Engineering Selection Recommendations

HCP0704-1R0-R Selection Criteria: The Eaton HCP0704-1R0-R is the primary component choice when the application requires the extended upper operating temperature limit of 155°C and the lower DC resistance specification of 6.2 mOhm. This part carries RoHS Compliance certification and MSL Level 1 rating, indicating unlimited moisture exposure tolerance. The higher saturation current rating of 17 A provides additional margin in high-current transient conditions.

SRP6540-1R0M Selection Criteria: The Bourns SRP6540-1R0M serves as an equivalent substitute when component availability from the primary manufacturer is constrained. This part maintains the same 1 µH inductance and 12 A current rating with tighter inductance tolerance (±20% versus ±25%). The SRP6540-1R0M is ROHS3 Compliant and carries REACH Unaffected status. The lower saturation current of 13.5 A and slightly elevated DC resistance of 7.2 mOhm maximum are acceptable for applications operating within the 12 A continuous current specification. The operating temperature range of -55°C to 125°C covers most industrial and commercial applications, with the exception of high-temperature environments exceeding 125°C.

Substitution Feasibility: Both components are Active products with current manufacturing status. Dimensional variations between the two parts (6.80mm x 6.80mm versus 7.20mm x 6.50mm footprint) require PCB layout verification prior to implementation. The MSL Level 3 classification of the Bourns part necessitates controlled moisture exposure during storage and assembly compared to the unlimited MSL Level 1 of the Eaton part.

Frequently Asked Questions (FAQ)

Q: Can the SRP6540-1R0M directly replace the HCP0704-1R0-R without circuit redesign?

A: The SRP6540-1R0M matches the critical electrical parameters of inductance (1 µH), current rating (12 A), core type (drum core wirewound), and shielding configuration. However, PCB layout modifications are required due to dimensional differences. The HCP0704-1R0-R measures 6.80mm x 6.80mm while the SRP6540-1R0M measures 7.20mm x 6.50mm. Verify footprint compatibility on your PCB before component substitution.

Q: What is the significance of the DC resistance difference between these parts?

A: The HCP0704-1R0-R specifies 6.2 mOhm while the SRP6540-1R0M specifies 7.2 mOhm maximum. At the 12 A continuous current rating, this 1 mOhm difference results in approximately 0.12 W additional power dissipation in the substitute part. For applications with strict thermal or efficiency requirements, this difference must be evaluated against your design margins.

Q: How do the saturation current ratings affect component selection?

A: The HCP0704-1R0-R has a saturation current (Isat) of 17 A, while the SRP6540-1R0M has an Isat of 13.5 A. Both parts are rated for 12 A continuous operation. The saturation current represents the point at which inductance begins to degrade significantly. The HCP0704-1R0-R provides 5 A margin above continuous rating, while the SRP6540-1R0M provides 1.5 A margin. For applications with transient current spikes, the Eaton part offers greater headroom.

Q: What are the moisture sensitivity implications of MSL Level 1 versus MSL Level 3?

A: The HCP0704-1R0-R carries MSL Level 1 (Unlimited), meaning it has no moisture sensitivity restrictions and can be stored indefinitely without desiccant protection. The SRP6540-1R0M carries MSL Level 3 (168 Hours), requiring that the component be used within 168 hours of package opening if stored outside controlled humidity conditions. For high-volume manufacturing or extended inventory periods, the Eaton part eliminates moisture management complexity.

Q: Are there operating temperature range limitations with the substitute part?

A: The HCP0704-1R0-R operates from -40°C to 155°C, while the SRP6540-1R0M operates from -55°C to 125°C. The Bourns part has a lower upper temperature limit of 125°C. If your application requires operation above 125°C, the Eaton part is required. The Bourns part provides superior low-temperature performance at -55°C versus -40°C.

Q: Do both parts meet current compliance requirements?

A: Both components are RoHS Compliant (HCP0704-1R0-R is RoHS Compliant; SRP6540-1R0M is ROHS3 Compliant) and carry REACH Unaffected status. Both are classified under ECCN EAR99 and HTSUS 8504.50.4000. Compliance requirements are equivalent for both parts in standard commercial and industrial applications.

Q: What is the inductance tolerance impact on circuit performance?

A: The HCP0704-1R0-R specifies ±25% inductance tolerance, while the SRP6540-1R0M specifies ±20% tolerance. The tighter tolerance of the Bourns part may provide improved circuit performance in applications sensitive to inductance variation, such as high-frequency filtering or resonant circuits. Both tolerances are measured at 100 kHz test frequency.