PD54R-683K Equivalent & Substitute Parts

Part Overview

The PD54R-683K is a 68 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications with a current rating of 630 mA and maximum DC resistance of 500mOhm. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor category.

Substiute Parts

PD54R-683K

API Delevan Inc.In Stock: 1244PD54R-683K Datasheet

Current PartRFQ

SDR0604-680KL

Bourns Inc.In Stock: 10245SDR0604-680KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PD54R-683K is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value must be 68 µH with ±10% tolerance
• Current rating must meet or exceed 630 mA continuous operation
• DC resistance must not exceed 500mOhm maximum
• Core material must be ferrite for equivalent magnetic performance
• Shielding configuration must remain unshielded

Mechanical Compatibility Criteria:

• Mounting type must be surface mount
• Package classification must be nonstandard drum core type
• Inductance test frequency must be 1 kHz

Compliance Criteria:

• RoHS3 compliance required
• Moisture sensitivity level MSL 1 (Unlimited) required
• REACH unaffected status required

The substitute part SDR0604-680KL meets all electrical, mechanical, and compliance requirements within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The SDR0604-680KL from Bourns Inc. is qualified as a substitute for the PD54R-683K based on the following factors:

Electrical Performance: Both components maintain 68 µH inductance with ±10% tolerance and ferrite core construction. The substitute part exhibits higher saturation current (840 mA versus 630 mA), providing additional margin. The DC resistance differential of 20 mOhm (520 mOhm maximum versus 500 mOhm maximum) represents a 4% increase and must be evaluated against circuit thermal and efficiency requirements.

Compliance Status: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility.

Temperature Consideration: The substitute part operates across -40°C to 125°C, which is narrower than the original -55°C to 125°C range. Applications requiring operation below -40°C must retain the PD54R-683K.

Current Rating: The substitute is rated 10 mA lower in continuous current (620 mA versus 630 mA). Circuit designs operating at or above 620 mA continuous current must verify margin requirements.

Frequently Asked Questions (FAQ)

Q: Can SDR0604-680KL replace PD54R-683K in all applications?

A: Substitution is valid when circuit operating current does not exceed 620 mA continuous and minimum operating temperature does not fall below -40°C. The 20 mOhm increase in DC resistance must be evaluated for thermal impact in power-sensitive applications.

Q: What is the significance of the DC resistance difference?

A: DC resistance directly affects power dissipation and thermal performance. At 630 mA, the PD54R-683K dissipates 198.45 mW maximum, while the SDR0604-680KL dissipates 200.24 mW maximum at 620 mA. The difference is approximately 1.8 mW, which is negligible in most applications but must be considered in thermally constrained designs.

Q: Are the physical dimensions compatible?

A: The substitute part is slightly larger (5.80mm x 5.80mm x 4.80mm versus 5.70mm x 5.11mm x 4.50mm). PCB layout and component clearance must be verified before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both PD54R-683K and SDR0604-680KL are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) rating, ensuring equivalent regulatory and environmental compliance.

Q: What is the saturation current difference and why does it matter?

A: The SDR0604-680KL has higher saturation current (840 mA versus 630 mA). This provides additional headroom against inductor saturation but does not change the continuous current rating, which remains the limiting factor for sustained operation.

Q: Can the substitute be used in low-temperature applications?

A: Applications requiring operation below -40°C must use the original PD54R-683K, which is rated to -55°C. The SDR0604-680KL minimum operating temperature is -40°C.