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PD104R-683K Equivalent & Substitute Parts
Part Overview
The PD104R-683K is a 68 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications. This component features a 940 mA current rating, 220 mOhm maximum DC resistance, and operates across the temperature range of -55°C to 125°C. The part is currently active in production and RoHS3 compliant, making it suitable for modern electronic assemblies requiring fixed inductance in compact form factors.
Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting packaging and environmental requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 68 µH |
| Inductance Tolerance | ±10% |
| Current Rating | 940 mA |
| DC Resistance (Max) | 220 mOhm |
| Core Type | Ferrite, Unshielded Drum Core |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C to 125°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the PD104R-683K is determined by the following critical parameters:
- Inductance Value: Must be 68 µH with ±10% tolerance
- Current Rating: Must support minimum 940 mA continuous current
- DC Resistance: Must not exceed 220 mOhm maximum
- Core Material & Shielding: Ferrite, unshielded drum core construction
- Mounting Configuration: Surface mount, nonstandard package
- Environmental Compliance: RoHS3 compliant, MSL 1 rating
- Operating Temperature: Must support -55°C to 125°C range
The SDR1006-680KL meets these substitution criteria with equivalent inductance, superior current handling capability, and matching DC resistance specification.
Parameter Comparison
| Parameter | PD104R-683K (Main) | SDR1006-680KL (Substitute) | Compatibility |
|---|---|---|---|
| Manufacturer | API Delevan Inc. | Bourns Inc. | Different manufacturer |
| Inductance | 68 µH | 68 µH | Equivalent |
| Inductance Tolerance | ±10% | ±10% | Equivalent |
| Current Rating (Amps) | 940 mA | 1.1 A | Substitute exceeds requirement |
| DC Resistance (Max) | 220 mOhm | 220 mOhm | Equivalent |
| Core Type | Ferrite, Unshielded Drum Core | Ferrite, Unshielded Drum Core | Equivalent |
| Shielding | Unshielded | Unshielded | Equivalent |
| Mounting Type | Surface Mount | Surface Mount | Equivalent |
| Operating Temperature Range | -55°C to 125°C | -40°C to 125°C | Substitute range narrower at low end |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Equivalent |
| Package / Case | Nonstandard | Nonstandard | Equivalent |
| Size / Dimension (L x W) | 0.386" x 0.346" (9.80mm x 8.79mm) | 0.386" x 0.386" (9.80mm x 9.80mm) | Width dimension differs |
| Height - Seated (Max) | 0.157" (4.00mm) | 0.228" (5.80mm) | Substitute is taller |
| Product Status | Active | Active | Both in production |
Engineering Selection Recommendations
The SDR1006-680KL qualifies as a functional substitute for the PD104R-683K based on electrical parameter equivalence and compliance certifications. Both components are active products with RoHS3 compliance and MSL 1 ratings.
Selection between these parts should account for the following:
- Current Margin: The SDR1006-680KL provides 160 mA additional current capacity beyond the 940 mA requirement, offering design margin for transient conditions.
- Temperature Range: The PD104R-683K supports operation at -55°C, while the SDR1006-680KL minimum is -40°C. Applications requiring -55°C operation must use the PD104R-683K.
- Physical Dimensions: The SDR1006-680KL is 1.8 mm wider and 1.8 mm taller than the PD104R-683K. PCB layout constraints must be evaluated for compatibility.
- DC Resistance: Both parts meet the 220 mOhm maximum specification identically.
Frequently Asked Questions (FAQ)
Q: Can the SDR1006-680KL replace the PD104R-683K in all applications?
A: Electrical substitution is valid for inductance, current rating, and DC resistance. Physical dimensions differ; verify PCB layout accommodates the larger footprint. If operation below -40°C is required, the PD104R-683K must be used.
Q: What is the significance of the current rating difference?
A: The PD104R-683K is rated for 940 mA, while the SDR1006-680KL is rated for 1.1 A. The substitute provides additional current capacity. Both meet the 220 mOhm DC resistance specification at their respective current ratings.
Q: Are there packaging differences between these parts?
A: Both components use nonstandard surface mount packages with tape and reel packaging. Physical dimensions differ: the SDR1006-680KL is wider (9.80mm vs 8.79mm) and taller (5.80mm vs 4.00mm). Verify PCB layout compatibility before substitution.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the PD104R-683K and SDR1006-680KL are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings.
Q: What is the inductance tolerance for these parts?
A: Both components have ±10% inductance tolerance at 1 kHz test frequency, ensuring equivalent performance within specified limits.
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