CDRH73NP-100MC-B Equivalent & Substitute Parts

Part Overview

The CDRH73NP-100MC-B is a 10 µH shielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is rated for 1.68 A continuous current with a maximum DC resistance of 72 mOhm and operates across the temperature range of -40°C to 100°C. The component is ROHS3 compliant and classified as Moisture Sensitivity Level 1 (unlimited). The part is currently active in production with 884 pieces available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

CDRH73NP-100MC-B

Sumida America Components Inc.In Stock: 910CDRH73NP-100MC-B Datasheet

Current PartRFQ

P1166.103NLT

Pulse ElectronicsIn Stock: 2615P1166.103NLT Datasheet

SimilarRFQ

SRR0735A-100M

Bourns Inc.In Stock: 6230SRR0735A-100M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDRH73NP-100MC-B are qualified based on the following criteria:

Electrical Parameters (Primary):

• Inductance value: 10 µH ±20% tolerance
• Current rating: minimum 1.6 A (within acceptable operating margin)
• DC resistance: 70-72 mOhm maximum
• Shielding: Shielded construction required

Mechanical Parameters (Secondary):

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Physical dimensions: 7.30 x 7.30 mm footprint with height ≤ 3.70 mm maximum

Compliance Parameters:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited)
• Operating temperature range: minimum -40°C to 100°C

The two substitute parts identified meet these criteria with minor variations in current saturation ratings, self-resonant frequency, and operating temperature upper limits. These variations remain within acceptable engineering tolerances for equivalent substitution.

Parameter Comparison

Engineering Selection Recommendations

CDRH73NP-100MC-B (Primary Part): This Sumida inductor serves as the reference component with active production status and ROHS3 compliance. It is suitable for applications requiring the specified 10 µH inductance with 1.68 A current handling in the -40°C to 100°C temperature range.

P1166.103NLT (Pulse Electronics) - Substitute Option: This wirewound inductor provides equivalent inductance and tolerance with a slightly lower current rating of 1.6 A. The DC resistance of 70 mOhm is marginally lower than the main part. The extended operating temperature range to 130°C provides additional thermal margin. Physical dimensions are slightly larger (7.54 x 7.54 mm), requiring verification of PCB layout compatibility. ROHS3 compliance and MSL 1 rating are maintained.

SRR0735A-100M (Bourns) - Substitute Option: This drum core wirewound inductor offers the highest current rating at 2.1 A with identical DC resistance of 72 mOhm and matching footprint dimensions of 7.30 x 7.30 mm. The extended operating temperature range to 125°C and AEC-Q200 automotive qualification provide additional performance assurance. Height is marginally increased to 3.70 mm. ROHS3 compliance and MSL 1 rating are maintained.

All three parts maintain ROHS3 compliance, MSL 1 rating, and active production status, supporting long-term supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can P1166.103NLT be used as a direct replacement for CDRH73NP-100MC-B?

A: P1166.103NLT meets the core electrical requirements of 10 µH inductance, ±20% tolerance, and shielded construction. The current rating of 1.6 A is within acceptable margin of the 1.68 A specification. However, the footprint dimensions are 7.54 x 7.54 mm compared to 7.30 x 7.30 mm, requiring PCB layout verification before implementation.

Q: What is the primary difference between the Pulse Electronics and Bourns substitute parts?

A: The Bourns SRR0735A-100M provides higher current capacity (2.1 A versus 1.6 A) and maintains the identical 7.30 x 7.30 mm footprint as the original part. The Pulse Electronics P1166.103NLT offers lower DC resistance (70 mOhm) and extended temperature range to 130°C but requires larger PCB space.

Q: Are all three parts suitable for the same operating temperature range?

A: The CDRH73NP-100MC-B operates to 100°C maximum. Both substitute parts extend this range: P1166.103NLT to 130°C and SRR0735A-100M to 125°C. If the application requires operation only to 100°C, all three parts are compatible. Applications requiring higher temperature operation should select the appropriate substitute.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant with MSL 1 (Unlimited) rating. The Bourns part additionally carries AEC-Q200 automotive qualification, providing enhanced reliability documentation for automotive or high-reliability applications.

Q: What is the impact of DC resistance differences on circuit performance?

A: The DC resistance values are 72 mOhm (Sumida), 70 mOhm (Pulse), and 72 mOhm (Bourns). The 2 mOhm difference between Pulse and the other two parts represents approximately 2.8% variation and is negligible for most applications. Verify power dissipation requirements for current-critical designs.

Q: Can height differences affect PCB assembly?

A: The seated heights are 3.40 mm (Sumida), 3.51 mm (Pulse), and 3.70 mm (Bourns). These differences are within typical PCB clearance tolerances but should be verified against specific board design constraints, particularly in space-constrained applications or where components are mounted in close proximity.