NP06DB680M Equivalent & Substitute Parts

Part Overview

The NP06DB680M is a 68 µH shielded inductor manufactured by Taiyo Yuden, rated for 700 mA continuous current with a maximum DC resistance of 450 mOhm. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The part features surface mount packaging in a nonstandard 7.50mm × 7.30mm footprint with a maximum seated height of 3.20mm, operating across the temperature range of -25°C to 105°C.

Substiute Parts

NP06DB680M

Taiyo YudenIn Stock: 1217NP06DB680M Datasheet

Current PartRFQ

7447789168

Würth ElektronikIn Stock: 604267447789168 Datasheet

SimilarRFQ

SRR0603-680KL

Bourns Inc.In Stock: 1264SRR0603-680KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NP06DB680M is determined by strict alignment of the following electrical and mechanical parameters:

Electrical Criteria:

• Inductance value of 68 µH at 1 kHz test frequency
• Current rating equal to or greater than 700 mA
• DC resistance within acceptable operating limits
• Shielded construction to maintain electromagnetic isolation
• Operating temperature range encompassing or exceeding -25°C to 105°C

Mechanical Criteria:

• Surface mount mounting type
• Nonstandard package footprint compatibility
• Physical dimensions and seated height suitable for PCB integration
• Moisture sensitivity level of 1 (Unlimited)

Compliance Criteria:

• REACH Unaffected status
• EAR99 export classification
• HTSUS code 8504.50.4000

The substitute parts identified below meet these criteria with variations in DC resistance, current saturation ratings, and self-resonant frequency that remain within acceptable engineering tolerances for this inductor category.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Würth Elektronik 7447789168

The 7447789168 is the preferred substitute for the NP06DB680M. This part maintains the 68 µH inductance specification with ±20% tolerance matching the original component. The current rating of 740 mA exceeds the original 700 mA requirement, providing operational margin. The DC resistance of 520 mOhm is marginally higher than the original 450 mOhm specification but remains within acceptable limits for inductor applications. The part is classified as Active product status with AEC-Q200 ratings, ensuring long-term availability and quality assurance. The extended operating temperature range of -40°C to 125°C provides superior thermal coverage compared to the original -25°C to 105°C range. RoHS3 compliance and REACH Unaffected status confirm regulatory alignment.

Secondary Substitute: Bourns Inc. SRR0603-680KL

The SRR0603-680KL provides an alternative substitute with identical 68 µH inductance but with tighter ±10% tolerance. The current rating of 400 mA is significantly lower than the original 700 mA specification, restricting this part to applications with reduced current demands. The DC resistance of 900 mOhm is substantially higher than the original component, resulting in increased power dissipation. The smaller footprint of 6.50mm × 6.50mm may offer space advantages in compact designs but requires PCB layout verification. This part is Active status with RoHS3 compliance and REACH Unaffected status. The corner terminal configuration differs from standard terminal arrangements and requires design consideration.

Selection Criteria Summary:

• For applications requiring full 700 mA current capacity: Select 7447789168
• For applications with reduced current requirements below 400 mA: SRR0603-680KL is acceptable
• For designs with space constraints: SRR0603-680KL offers reduced footprint
• For thermal performance: Both substitutes support extended temperature ranges exceeding the original specification

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 7447789168 directly replace the NP06DB680M in all applications?

A: The 7447789168 meets or exceeds all critical electrical parameters of the NP06DB680M, including inductance value, current rating, and operating temperature range. Physical dimensions are comparable (7.30mm × 7.30mm versus 7.50mm × 7.30mm), with seated height of 3.50mm versus 3.20mm. PCB layout verification is required to confirm clearance compatibility in space-constrained designs.

Q: What is the impact of the higher DC resistance in the SRR0603-680KL?

A: The SRR0603-680KL exhibits 900 mOhm maximum DC resistance compared to 450 mOhm in the original NP06DB680M. This doubling of resistance results in increased power dissipation according to P = I²R. For a 700 mA application, this represents an additional 220 mW of dissipation. The SRR0603-680KL is suitable only for applications with current demands below 400 mA.

Q: Are there thermal considerations when substituting these parts?

A: Both substitute parts support extended operating temperature ranges (-40°C to 125°C) compared to the original specification (-25°C to 105°C). The Würth Elektronik 7447789168 includes AEC-Q200 automotive-grade ratings, indicating enhanced thermal stability. Higher DC resistance in the SRR0603-680KL generates additional heat; thermal management analysis is required for high-current applications.

Q: What is the significance of the corner terminal configuration in the SRR0603-680KL?

A: The SRR0603-680KL features corner terminals rather than standard terminal placement. This configuration affects PCB pad layout and solder joint geometry. Design files and footprint libraries must be updated to accommodate this terminal arrangement. Mechanical stress analysis may be required to ensure solder joint reliability.

Q: How do the self-resonant frequencies compare across these parts?

A: The NP06DB680M exhibits a self-resonant frequency of 8.1 MHz, while the 7447789168 operates at 11.5 MHz and the SRR0603-680KL at 10 MHz. Higher self-resonant frequencies indicate improved high-frequency performance. For applications operating near or above 8 MHz, the substitute parts provide extended usable frequency range.

Q: Are all three parts compliant with current regulatory requirements?

A: All three parts maintain REACH Unaffected status and EAR99 export classification. The Würth Elektronik 7447789168 and Bourns Inc. SRR0603-680KL are both RoHS3 compliant. The original NP06DB680M is classified as obsolete; substitution with active-status parts ensures compliance with current supply chain and regulatory requirements.

Q: What inventory considerations apply to these substitutes?

A: The Würth Elektronik 7447789168 maintains substantial inventory of 60,380 pieces in active production status, ensuring long-term availability. The Bourns Inc. SRR0603-680KL has 1,234 pieces available. The original NP06DB680M, though showing 1,112 pieces in stock, is obsolete and subject to discontinuation without notice.