CDRR157NP-100MC Equivalent & Substitute Parts

Part Overview

The CDRR157NP-100MC is a 10 µH shielded inductor manufactured by Sumida America Components Inc., designed for surface mount applications requiring fixed inductance with moderate current handling. This component is rated for 5 A continuous current with a maximum DC resistance of 25 mOhm and operates across the temperature range of -40°C to 100°C. The part maintains Active product status and is RoHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when equivalent electrical and mechanical parameters align within the specified tolerances, allowing for component interchangeability in circuit designs where the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

CDRR157NP-100MC

Sumida America Components Inc.In Stock: 1137CDRR157NP-100MC Datasheet

Current PartRFQ

SRR1806-100M

Bourns Inc.In Stock: 1299SRR1806-100M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDRR157NP-100MC is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 10 µH (within ±20% tolerance specification)
• Shielding classification: Shielded
• Core material: Ferrite
• Mounting type: Surface Mount
• Package classification: Nonstandard
• RoHS compliance: ROHS3 Compliant

Secondary Compatibility Factors:

• Current rating must support the application requirement
• DC resistance must not exceed the maximum specified value for the intended circuit
• Operating temperature range must encompass the application environment
• Physical dimensions must accommodate the PCB layout constraints

The SRR1806-100M from Bourns Inc. qualifies as a direct substitute based on matching inductance value, shielding type, core material, mounting configuration, and regulatory compliance. Variations in current rating, DC resistance, and temperature range are documented to enable informed selection based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the CDRR157NP-100MC and SRR1806-100M maintain Active product status and are RoHS3 compliant, confirming their suitability for current manufacturing environments. The selection between these components is determined by application-specific current requirements and thermal operating conditions.

CDRR157NP-100MC Selection Criteria:

• Applications requiring 5 A continuous current rating
• Operating environments limited to -40°C to 100°C
• Designs prioritizing lower DC resistance (25 mOhm maximum)

SRR1806-100M Selection Criteria:

• Applications with maximum continuous current of 4 A
• Operating environments extending to 125°C upper temperature limit
• Designs where higher saturation current (8.2 A) provides additional margin
• Acceptable applications where DC resistance of 33 mOhm does not compromise circuit performance

Both components feature identical inductance values, tolerance specifications, shielding characteristics, and ferrite core construction. Physical dimensions are comparable, with negligible differences in length, width, and height suitable for standard PCB layout accommodation. Moisture sensitivity classification and export control designations are equivalent across both parts.

Frequently Asked Questions (FAQ)

Q: Can the SRR1806-100M replace the CDRR157NP-100MC in all applications?

A: The SRR1806-100M is electrically equivalent for inductance and shielding characteristics. However, the lower current rating (4 A versus 5 A) and higher DC resistance (33 mOhm versus 25 mOhm) require verification that the application does not exceed 4 A continuous current and that the additional 8 mOhm resistance does not degrade circuit performance. The extended temperature range to 125°C is advantageous for high-temperature environments.

Q: What are the physical compatibility considerations?

A: Both components are classified as Nonstandard package types with comparable dimensions. The CDRR157NP-100MC measures 18.50mm L x 15.00mm W x 7.00mm H (seated), while the SRR1806-100M measures 18.30mm L x 14.00mm W x 7.10mm H (seated). These differences are minimal and typically accommodate standard PCB footprints designed for either component.

Q: Are there regulatory or compliance differences?

A: Both parts are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity classification, and share EAR99 export control designation. No regulatory barriers exist to substitution from a compliance perspective.

Q: How do the DC resistance values affect circuit design?

A: The CDRR157NP-100MC specifies 25 mOhm maximum DC resistance, while the SRR1806-100M specifies 33 mOhm. In applications where inductor losses directly impact efficiency or thermal performance, the 8 mOhm difference may be significant. Calculate power dissipation (P = I² × R) at the maximum operating current to determine acceptability.

Q: What is the significance of the saturation current difference?

A: The CDRR157NP-100MC saturates at 6.4 A, while the SRR1806-100M saturates at 8.2 A. Since the SRR1806-100M has a lower continuous current rating (4 A), the higher saturation current provides additional transient margin. The CDRR157NP-100MC, rated for 5 A continuous, approaches saturation more closely under peak current conditions.

Q: Can these inductors be used interchangeably in high-frequency applications?

A: Both inductors are tested at 100 kHz for inductance specification. The SRR1806-100M provides additional frequency data (Q @ 2.52 MHz = 56; Self Resonant Frequency = 19 MHz), indicating documented high-frequency performance. Applications above 100 kHz should reference the SRR1806-100M frequency characteristics when available.