HCT-502 Equivalent & Substitute Parts Reference

Part Overview

The HCT-502 is a fixed shielded toroidal inductor manufactured by API Delevan Inc., designed for surface mount applications requiring high current handling and low DC resistance. This component operates across a wide temperature range (-30°C to 130°C) and is classified as Active product status. Alternative equivalent parts may be required due to inventory constraints, specific application requirements, or design modifications that permit inductance value adjustments within acceptable circuit parameters.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Inductance	8.4	µH	Core specification; determines circuit resonance and filtering characteristics
Current Rating	10.8	A	Maximum continuous current; critical for thermal and saturation performance
DC Resistance (DCR)	8.3	mOhm Max	Power loss and thermal dissipation; affects efficiency
Shielding	Shielded	—	Electromagnetic interference containment; affects circuit layout and crosstalk
Mounting Type	Surface Mount	—	PCB assembly compatibility
Package Dimensions	0.740" × 0.740" × 0.400" (18.80mm × 18.80mm × 10.16mm)	—	Physical footprint and height clearance on PCB
Operating Temperature Range	-30°C to 130°C	—	Environmental performance envelope

Substitute Part Grouping Explanation

Substitution analysis for the HCT-502 is based on the following critical parameters:

Inductance Value: The HCT-502 specifies 8.4 µH. Substitute parts must maintain inductance within circuit design tolerances. The PE-53682NL operates at 4.7 µH, representing a 44% reduction in inductance value.

Current Rating: The HCT-502 is rated for 10.8 A continuous current. Substitute parts must meet or exceed this current handling requirement to prevent thermal stress and saturation. The PE-53682NL is rated for 10.4 A, which is 0.4 A below the primary part specification.

DC Resistance: Both parts specify 8.3 mOhm maximum DCR, ensuring equivalent power dissipation and thermal characteristics.

Shielding Configuration: The HCT-502 is shielded; the PE-53682NL is unshielded. This represents a functional difference affecting electromagnetic compatibility and circuit isolation.

Physical Footprint: Both parts share identical lateral dimensions (0.740" × 0.740" / 18.80mm × 18.80mm), with height differences of 0.010" (0.25mm).

Mounting and Package: Both are surface mount components with nonstandard package geometry.

Parameter Comparison

Parameter	HCT-502 (Main Part)	PE-53682NL (Substitute)	Compatibility Notes
Manufacturer	API Delevan Inc.	Pulse Electronics	Different manufacturers; cross-qualification required
Inductance	8.4 µH	4.7 µH	Significant reduction; circuit impact assessment required
Current Rating	10.8 A	10.4 A	0.4 A margin reduction
DC Resistance (DCR)	8.3 mOhm Max	8.3 mOhm Max	Equivalent
Shielding	Shielded	Unshielded	Different EMI containment; layout considerations required
Mounting Type	Surface Mount	Surface Mount	Compatible
Lateral Dimensions	0.740" × 0.740" (18.80mm × 18.80mm)	0.740" × 0.740" (18.80mm × 18.80mm)	Identical footprint
Height (Seated Max)	0.400" (10.16mm)	0.390" (9.91mm)	0.010" (0.25mm) difference; acceptable for most applications
Operating Temperature	-30°C to 130°C	-40°C to 130°C	PE-53682NL extends lower temperature range by 10°C
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Regulatory difference; PE-53682NL meets current environmental standards
Product Status	Active	Active	Both actively manufactured

Engineering Selection Recommendations

Primary Consideration - Inductance Specification: The PE-53682NL operates at 4.7 µH compared to the HCT-502's 8.4 µH. This 44% reduction in inductance value directly affects circuit performance in filtering, impedance matching, and resonant frequency applications. Substitution is permissible only when circuit design tolerances explicitly allow for inductance values in the 4.7 µH range or when the application permits inductance reduction without performance degradation.

Current Rating Assessment: The PE-53682NL current rating of 10.4 A is 0.4 A below the HCT-502 specification. For applications operating near the 10.8 A maximum, this margin reduction may introduce thermal stress. Substitution is acceptable for applications with peak current demands below 10.4 A.

Shielding Implications: The HCT-502 provides shielded construction; the PE-53682NL is unshielded. In circuits sensitive to electromagnetic interference or requiring isolation from adjacent components, the unshielded substitute may introduce coupling effects. Shielding differences require circuit-level EMI analysis.

Regulatory and Compliance Status: The PE-53682NL achieves ROHS3 compliance, whereas the HCT-502 is RoHS non-compliant. For applications subject to RoHS requirements, the PE-53682NL satisfies current environmental regulations. Both parts are REACH Unaffected and classified as EAR99.

Physical Compatibility: Identical lateral footprints (18.80mm × 18.80mm) ensure PCB layout compatibility. The 0.25mm height difference is negligible for standard surface mount assembly processes.

Temperature Range: The PE-53682NL extends the lower operating temperature to -40°C, providing enhanced performance in cold environment applications compared to the HCT-502's -30°C minimum.

Frequently Asked Questions (FAQ)

Q: Can the PE-53682NL directly replace the HCT-502 in all applications?

A: No. The PE-53682NL differs in three critical parameters: inductance (4.7 µH vs. 8.4 µH), shielding (unshielded vs. shielded), and current rating (10.4 A vs. 10.8 A). Direct substitution is valid only when the circuit design explicitly permits these parameter variations and has been verified to function within the PE-53682NL's specifications.

Q: What is the impact of the inductance difference?

A: The 44% reduction in inductance value (from 8.4 µH to 4.7 µH) affects circuit resonance, filtering characteristics, and impedance matching. Applications dependent on the 8.4 µH specification will experience altered performance. Circuit simulation or empirical testing is necessary to determine acceptability in specific designs.

Q: Does the unshielded construction of the PE-53682NL affect performance?

A: Shielding differences impact electromagnetic interference containment and component isolation. In circuits with tight EMI requirements or high-density component placement, the unshielded PE-53682NL may introduce coupling effects not present with the shielded HCT-502. Application-specific EMI analysis is required.

Q: Are the physical dimensions compatible?

A: Yes. Both parts share identical lateral dimensions (18.80mm × 18.80mm) and are surface mount components. The 0.25mm height difference is within standard PCB assembly tolerances and does not affect mechanical compatibility.

Q: What is the significance of the RoHS compliance difference?

A: The PE-53682NL is ROHS3 compliant; the HCT-502 is not. For applications or markets requiring RoHS compliance, the PE-53682NL satisfies regulatory requirements. The HCT-502 may be restricted in certain jurisdictions or procurement environments.

Q: Can the PE-53682NL handle the same current as the HCT-502?

A: The PE-53682NL is rated for 10.4 A, which is 0.4 A below the HCT-502's 10.8 A rating. For applications operating below 10.4 A, the PE-53682NL is suitable. Applications requiring the full 10.8 A capability should use the HCT-502 or equivalent parts with matching current ratings.

Q: What is the temperature range difference?

A: The PE-53682NL operates from -40°C to 130°C, extending 10°C lower than the HCT-502's -30°C to 130°C range. For cold environment applications, the PE-53682NL provides enhanced low-temperature performance.

Q: Are there any packaging or inventory considerations?

A: The HCT-502 is supplied in Bulk packaging with 714 pieces in stock. The PE-53682NL is supplied in Tube packaging with 1079 pieces in stock. Packaging format may affect handling, storage, and assembly processes.

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