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Bourns 2322-H 680µH Toroidal Inductor Equivalent & Substitute Parts
Part Overview
The Bourns 2322-H is a 680µH unshielded toroidal inductor rated for 3.4A continuous current with 150mOhm maximum DC resistance. This through-hole component features an iron powder core and operates across the -55°C to 105°C temperature range. The 2322-H is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. The 2322-H-RC provides a direct functional equivalent with improved product status and compliance profile.
Substiute Parts
Key Parameters
| Parameter | Value | Specification Basis |
|---|---|---|
| Inductance | 680 µH | Core requirement for circuit function |
| Current Rating | 3.4 A | Thermal and saturation performance |
| DC Resistance (DCR) | 150 mOhm Max | Power loss and efficiency |
| Tolerance | ±15% | Circuit tolerance stack-up |
| Core Material | Iron Powder | Magnetic performance and frequency response |
| Shielding | Unshielded | EMI characteristics and form factor |
| Mounting Type | Through Hole | PCB assembly compatibility |
| Package / Case | Radial, Horizontal (Open) | Physical footprint and orientation |
| Operating Temperature | -55°C ~ 105°C | Environmental performance envelope |
| Inductance Test Frequency | 1 kHz | Measurement standard |
Substitute Part Grouping Explanation
The 2322-H-RC qualifies as a direct substitute based on identical electrical and mechanical parameters across all critical specifications. Substitution logic is determined by the following key parameters:
- Inductance Value: Both parts specify 680µH at 1kHz test frequency
- Current Rating: Both rated for 3.4A continuous operation
- DC Resistance: Both maintain 150mOhm maximum DCR
- Tolerance: Both specified at ±15%
- Core Material & Type: Both use iron powder toroidal construction
- Shielding Configuration: Both are unshielded
- Mounting & Package: Both are through-hole, radial horizontal (open) configuration
- Temperature Range: Both operate -55°C to 105°C
- Physical Dimensions: Both measure 1.280" diameter × 0.650" seated height
The 2322-H-RC differs only in product status (active vs. obsolete) and compliance certifications, with no electrical or mechanical parameter variance.
Parameter Comparison
| Parameter | 2322-H (Main Part) | 2322-H-RC (Substitute) | Match Status |
|---|---|---|---|
| Inductance | 680 µH | 680 µH | Identical |
| Current Rating (Amps) | 3.4 A | 3.4 A | Identical |
| DC Resistance (DCR) | 150 mOhm Max | 150 mOhm Max | Identical |
| Tolerance | ±15% | ±15% | Identical |
| Core Material | Iron Powder | Iron Powder | Identical |
| Type | Toroidal | Toroidal | Identical |
| Shielding | Unshielded | Unshielded | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | Radial, Horizontal (Open) | Radial, Horizontal (Open) | Identical |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 105°C | Identical |
| Inductance Test Frequency | 1 kHz | 1 kHz | Identical |
| Size / Dimension | 1.280" Dia (32.51mm) | 1.280" Dia (32.51mm) | Identical |
| Height - Seated (Max) | 0.650" (16.51mm) | 0.650" (16.51mm) | Identical |
| Product Status | Obsolete | Active | Different |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Different |
| Packaging | Not specified | Bulk | Different |
Engineering Selection Recommendations
The 2322-H-RC is the appropriate selection for new designs and ongoing production requirements. This recommendation is based on the following factors:
Product Status: The 2322-H-RC maintains active product status with confirmed inventory availability (1349 pcs), whereas the 2322-H is classified as obsolete. Active status ensures continued manufacturing support and supply chain reliability.
Regulatory Compliance: The 2322-H-RC achieves ROHS3 compliance, meeting current environmental and regulatory requirements for component procurement. The 2322-H is RoHS non-compliant, which may restrict use in regulated applications and procurement frameworks.
Electrical & Mechanical Equivalence: All functional parameters are identical between the two parts. The 2322-H-RC provides complete electrical and mechanical interchangeability with zero parameter deviation.
Supply Chain Continuity: The 2322-H-RC offers superior supply chain stability through active manufacturing status and higher inventory levels, reducing procurement risk for production schedules.
Frequently Asked Questions (FAQ)
Q: Can the 2322-H-RC be used as a direct replacement for the 2322-H in existing designs?
A: Yes. The 2322-H-RC is electrically and mechanically identical to the 2322-H across all specified parameters. PCB footprint, lead configuration, and mounting orientation are unchanged. No circuit redesign or board layout modification is required.
Q: What are the key parameters that determine substitution eligibility?
A: Substitution is determined by matching inductance value (680µH), current rating (3.4A), DC resistance (150mOhm max), tolerance (±15%), core material (iron powder), shielding configuration (unshielded), mounting type (through-hole), package style (radial horizontal open), and operating temperature range (-55°C to 105°C). All parameters must align for direct substitution.
Q: Does the packaging difference (bulk vs. unspecified) affect component performance?
A: No. Packaging refers to the quantity and format of shipment (bulk tape, tube, or reel), not the component itself. The electrical and mechanical specifications of the inductor remain identical regardless of packaging format.
Q: Why is RoHS3 compliance important for the 2322-H-RC?
A: RoHS3 compliance indicates the component meets current environmental and hazardous substance restrictions required by many procurement standards and regulatory frameworks. This status is essential for applications subject to environmental regulations or customer compliance requirements.
Q: Are there any frequency-dependent performance differences between these parts?
A: No. Both parts are specified at the same inductance test frequency (1kHz). The iron powder toroidal core construction is identical, ensuring equivalent frequency response characteristics across the operating range.
Q: What is the physical footprint compatibility between these parts?
A: Both parts are identical in physical dimensions: 1.280" diameter with 0.650" maximum seated height. Through-hole radial lead configuration and horizontal orientation are unchanged, ensuring 100% PCB footprint compatibility.
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