Murata Power Solutions 39H102C Fixed Inductor Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 39H102C is a 1 µH unshielded wirewound surface mount inductor rated for 17.5 A continuous current with a maximum DC resistance of 2.5 mOhm. This component is designed for high-current power conversion and filtering applications requiring low inductance values with minimal parasitic resistance. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for standard manufacturing environments without special handling requirements.

Equivalent and substitute parts are identified when design requirements permit tolerance of minor variations in shielding characteristics, current saturation ratings, or physical dimensions while maintaining the core electrical specifications of 1 µH inductance, 2.5 mOhm maximum DC resistance, and compatible operating temperature range.

Substiute Parts

39H102C

Murata Power Solutions Inc.In Stock: 86339H102C Datasheet

Current PartRFQ

CEP125NP-1R0MC-H

Sumida America Components Inc.In Stock: 2210CEP125NP-1R0MC-H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 39H102C is determined by strict adherence to the following electrical and mechanical parameters:

Primary Electrical Criteria (Non-Negotiable):

• Inductance value: 1 µH (within ±20% tolerance band)
• DC Resistance: 2.5 mOhm maximum
• Current Rating: Minimum 16.5 A continuous (allows minor reduction from 17.5 A baseline)
• Current Saturation: 20 A minimum
• Operating Temperature: -40°C to 125°C minimum range
• Inductance Test Frequency: 100 kHz

Mechanical & Packaging Criteria:

• Mounting Type: Surface Mount
• Packaging Format: Tape & Reel (TR)
• Package Type: Nonstandard (12.90mm x 12.90mm footprint class)

Compliance Criteria:

• RoHS3 Compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

Allowed Variations:

• Shielding type (unshielded to shielded conversion permitted)
• Core material composition (ferrite or equivalent)
• Physical dimensions within nonstandard package class tolerance
• Manufacturer identity (different qualified suppliers)

Parameter Comparison

Engineering Selection Recommendations

The Sumida America Components CEP125NP-1R0MC-H qualifies as a direct substitute for the Murata 39H102C based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical inductance (1 µH ±20%), DC resistance (2.5 mOhm maximum), saturation current (20 A), and operating temperature range (-40°C to 125°C). The substitute's continuous current rating of 16.5 A represents a 5.7% reduction from the original 17.5 A specification, which remains within acceptable margins for most power conversion applications operating below maximum rated current.

Compliance Alignment: Both components carry ROHS3 compliance certification and unlimited moisture sensitivity rating (MSL 1), eliminating regulatory or handling requirement conflicts in standard manufacturing environments.

Physical Compatibility: The substitute's nonstandard package dimensions (12.50mm x 12.50mm, 5.60mm height) are compatible with the original footprint class. The lower profile height of the substitute may provide layout advantages in space-constrained designs.

Shielding Upgrade: The CEP125NP-1R0MC-H incorporates shielded drum core construction compared to the unshielded wirewound design of the 39H102C. This represents an electromagnetic interference (EMI) performance improvement, particularly beneficial in high-frequency switching environments or noise-sensitive applications.

Availability & Production Status: Both parts maintain active production status with established supply channels, ensuring long-term component availability for production and field service requirements.

Frequently Asked Questions (FAQ)

Q: Can the CEP125NP-1R0MC-H be used as a direct replacement for the 39H102C in existing designs?

A: Yes, the CEP125NP-1R0MC-H meets all primary electrical specifications (1 µH inductance, 2.5 mOhm DCR, 20 A saturation current, identical temperature range). The 1 A reduction in continuous current rating (16.5 A vs. 17.5 A) is acceptable for applications not operating at maximum rated current. The shielded construction provides EMI performance benefits. Physical dimensions are compatible within the nonstandard package class.

Q: What is the difference between shielded and unshielded inductors in this application?

A: The 39H102C is unshielded wirewound construction, while the CEP125NP-1R0MC-H uses shielded drum core design. Shielding reduces electromagnetic field radiation and susceptibility to external interference, improving performance in noise-sensitive circuits. Both designs achieve identical inductance and DC resistance specifications. Shielding may introduce minor frequency-dependent impedance variations at frequencies above the test frequency (100 kHz).

Q: Are there physical footprint compatibility concerns?

A: The substitute (12.50mm x 12.50mm, 5.60mm height) fits within the nonstandard package class of the original (12.90mm x 12.90mm, 5.80mm height). The substitute has a smaller footprint and lower profile, which may provide layout advantages. PCB pad patterns should be verified for exact compatibility, as nonstandard packages may have design-specific land patterns.

Q: Do both parts require identical handling and storage procedures?

A: Yes. Both components carry MSL 1 (Unlimited) moisture sensitivity rating, eliminating special moisture control requirements during storage, handling, or assembly. Standard ESD precautions for surface mount components apply to both parts.

Q: What compliance certifications apply to both parts?

A: Both the 39H102C and CEP125NP-1R0MC-H carry ROHS3 compliance certification. The 39H102C is REACH Unaffected; the CEP125NP-1R0MC-H is REACH Vendor Undefined. Both carry EAR99 ECCN classification and 8504.50.4000 HTSUS code. Verify final compliance requirements with your regulatory or procurement department for specific application jurisdictions.

Q: What is the inductance tolerance band for both parts?

A: Both parts specify ±20% inductance tolerance at 100 kHz test frequency. This means the 1 µH nominal value can range from 0.8 µH to 1.2 µH. Circuit designs must account for this tolerance band in filter calculations, resonant frequency tuning, or impedance matching applications.

Q: Can the substitute handle the same power dissipation as the original?

A: Both parts specify identical maximum DC resistance of 2.5 mOhm. Power dissipation at a given current is calculated as I²R. At the substitute's rated current of 16.5 A, dissipation is approximately 0.68 W. At the original's rated current of 17.5 A, dissipation is approximately 0.77 W. The substitute is suitable for applications operating at or below 16.5 A continuous current.