CD104NP-101KC Equivalent & Substitute Parts

Part Overview

The CD104NP-101KC is a 100 µH unshielded surface mount inductor manufactured by Sumida America Components Inc. This fixed inductor is designed for applications requiring 740 mA current handling capability with a maximum DC resistance of 344mOhm. The component operates across the temperature range of -40°C to 100°C and is RoHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or performance optimization within the specified electrical and mechanical parameters.

Substiute Parts

CD104NP-101KC

Sumida America Components Inc.In Stock: 809CD104NP-101KC Datasheet

Current PartRFQ

SDR1045-101K

Bourns Inc.In Stock: 1294SDR1045-101K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD104NP-101KC is determined by the following critical parameters:

Primary Electrical Criteria:

• Inductance value: 100 µH with ±10% tolerance
• Shielding classification: Unshielded
• Current rating capability: minimum 740 mA
• DC resistance: maximum 344mOhm

Mechanical Criteria:

• Mounting type: Surface Mount
• Package classification: Nonstandard
• Physical dimensions compatible with 10.00mm x 9.00mm footprint and 4.50mm maximum height

Environmental & Compliance Criteria:

• Operating temperature range: -40°C to 100°C minimum
• RoHS3 compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part SDR1045-101K meets these criteria with equivalent inductance and tolerance specifications, surface mount configuration, and compliance certifications. The substitute demonstrates higher current rating (1.1 A) and saturation current (1.3 A), providing design margin for applications requiring the CD104NP-101KC.

Parameter Comparison

Engineering Selection Recommendations

CD104NP-101KC Selection Criteria:

• Primary choice when DC resistance specification of 344mOhm maximum is critical to circuit performance
• Required when PCB layout constraints limit component height to 4.50mm maximum
• Specified when footprint is restricted to 10.00mm x 9.00mm dimensions

SDR1045-101K Selection Criteria:

• Suitable substitute when higher current rating (1.1 A) provides design margin for load transients
• Applicable when extended operating temperature range (-40°C to 125°C) is required
• Acceptable when PCB layout accommodates 10.00mm x 10.00mm footprint and 4.80mm height
• Appropriate for applications where higher DC resistance (540mOhm) does not compromise thermal or efficiency requirements

Both components maintain RoHS3 compliance, MSL Level 1 rating, and equivalent inductance specifications. Selection between these parts depends on specific circuit requirements regarding current handling, thermal dissipation, and physical constraints.

Frequently Asked Questions (FAQ)

Q: Can SDR1045-101K directly replace CD104NP-101KC in all applications?

A: SDR1045-101K is electrically compatible for inductance value and tolerance. However, verify three factors: (1) DC resistance increase from 344mOhm to 540mOhm does not exceed thermal budget; (2) PCB layout accommodates 10.00mm x 10.00mm footprint and 4.80mm height versus original 10.00mm x 9.00mm and 4.50mm; (3) current rating of 1.1 A meets or exceeds circuit requirements.

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

A: CD104NP-101KC specifies 344mOhm maximum DC resistance, while SDR1045-101K specifies 540mOhm maximum. Higher DC resistance increases power dissipation at rated current. At 740 mA, CD104NP-101KC dissipates approximately 188 mW maximum, while SDR1045-101K dissipates approximately 296 mW maximum. Verify thermal performance in target application.

Q: Are the physical dimensions interchangeable?

A: No. CD104NP-101KC measures 10.00mm x 9.00mm with 4.50mm maximum height. SDR1045-101K measures 10.00mm x 10.00mm with 4.80mm maximum height. PCB layout and clearance requirements must accommodate these dimensional differences. Verify component placement and surrounding circuit elements before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CD104NP-101KC and SDR1045-101K are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both carry EAR99 ECCN classification and 8504.50.4000 HTSUS code.

Q: What is the difference in self-resonant frequency?

A: CD104NP-101KC has a self-resonant frequency of 9.42 MHz, while SDR1045-101K has 9.7 MHz. This difference is minimal and does not significantly impact performance in most applications. For high-frequency circuits near these resonant points, verify frequency response characteristics.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. If DC resistance must remain below 350mOhm or height is constrained to 4.50mm, specify CD104NP-101KC. If higher current margin or extended temperature range is beneficial, SDR1045-101K is acceptable provided dimensional and thermal constraints are satisfied.