1641-682K Shielded Molded Inductor - Equivalent & Substitute Parts

Part Overview

The 1641-682K is a 6.8 µH shielded molded inductor manufactured by API Delevan Inc., designed for through-hole axial mounting in electronic circuits requiring fixed inductance with moderate current handling. The component features an iron core with 285 mA current rating and operates across a wide temperature range of -55°C to 105°C. As an active product with 837 units in stock, finding equivalent or substitute components becomes necessary for supply chain continuity, design flexibility, or specific compliance requirements such as RoHS certification.

Substiute Parts

1641-682K

API Delevan Inc.In Stock: 9351641-682K Datasheet

Current PartRFQ

1641R-682K

API Delevan Inc.In Stock: 16681641R-682K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1641R-682K qualifies as a direct equivalent substitute for the 1641-682K based on matching electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

• Inductance Value: Both parts specify 6.8 µH with ±10% tolerance
• Current Rating: Both rated at 285 mA saturation current
• DC Resistance: Both specified at 1.02Ohm maximum
• Frequency Performance: Identical Q factor (50 @ 7.9MHz) and self-resonant frequency (55 MHz)
• Operating Temperature: Both operate from -55°C to 105°C
• Mechanical Compatibility: Identical axial through-hole package and physical dimensions (0.162" Dia x 0.410" L)
• Shielding and Core: Both feature shielded molded construction with iron cores
• Series Relationship: The 1641R designation represents an updated variant within the API Delevan 1641 series

Parameter Comparison

Engineering Selection Recommendations

The 1641R-682K serves as a functionally equivalent substitute for the 1641-682K across all electrical, mechanical, and thermal specifications. The primary distinction between these components is regulatory compliance status: the 1641R-682K carries ROHS3 compliance, whereas the 1641-682K is RoHS non-compliant.

For applications or markets requiring RoHS3 compliance, the 1641R-682K is the appropriate selection. For legacy designs or non-regulated applications where RoHS compliance is not a requirement, either part number may be used. Both components are active products with established supply availability, and the substitution is direct without circuit modification or performance adjustment.

Frequently Asked Questions (FAQ)

Q: Can the 1641R-682K replace the 1641-682K in existing designs?

A: Yes. The 1641R-682K is electrically and mechanically identical to the 1641-682K. All inductance, current, resistance, frequency, and temperature specifications match exactly. Direct substitution is possible without circuit changes.

Q: What is the difference between 1641-682K and 1641R-682K?

A: The primary difference is RoHS compliance status. The 1641R-682K is ROHS3 compliant, while the original 1641-682K is non-compliant. Electrically and mechanically, both components are equivalent.

Q: Are the physical dimensions identical?

A: Yes. Both parts share the same axial through-hole package with dimensions of 0.162" diameter by 0.410" length (4.11mm x 10.41mm).

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements. If RoHS3 compliance is required, specify the 1641R-682K. If RoHS compliance is not a requirement, either part number is acceptable from an engineering standpoint.

Q: Do both parts operate over the same temperature range?

A: Yes. Both the 1641-682K and 1641R-682K operate from -55°C to 105°C, making them suitable for the same thermal environments.

Q: Is the Q factor the same for both inductors?

A: Yes. Both components exhibit a Q factor of 50 at 7.9 MHz and a self-resonant frequency of 55 MHz.