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Bourns 2124-H Fixed Inductor Equivalent & Substitute Parts
Part Overview
The Bourns 2124-H is a 1 mH unshielded toroidal inductor rated for 1.3 A with a maximum DC resistance of 400 mOhm. This through-hole component operates across a temperature range of -55°C to 105°C and is part of the 2100 series. The 2124-H has reached obsolete status, making identification of active equivalent parts essential for ongoing production and design continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 1 mH |
| Inductance Tolerance | ±15% |
| Current Rating | 1.3 A |
| DC Resistance (Max) | 400 mOhm |
| Type | Toroidal |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package / Case | Radial, Horizontal (Open) |
| Operating Temperature Range | -55°C to 105°C |
| Inductance Test Frequency | 1 kHz |
| Size / Dimension | 0.860" Dia (21.84 mm) |
| Height - Seated (Max) | 0.450" (11.43 mm) |
Substitute Part Grouping Explanation
Substitution of the 2124-H is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for inductance value, tolerance, current rating, DC resistance, toroidal type, unshielded configuration, through-hole mounting, radial horizontal package orientation, operating temperature range, and physical dimensions. The 2124-H-RC meets all these criteria as a direct functional equivalent within the same 2100 series from Bourns Inc.
Parameter Comparison
| Parameter | 2124-H (Obsolete) | 2124-H-RC (Active) |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Series | 2100 | 2100 |
| Inductance | 1 mH | 1 mH |
| Inductance Tolerance | ±15% | ±15% |
| Current Rating (Amps) | 1.3 A | 1.3 A |
| DC Resistance (Max) | 400 mOhm | 400 mOhm |
| Type | Toroidal | Toroidal |
| Shielding | Unshielded | Unshielded |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Horizontal (Open) | Radial, Horizontal (Open) |
| Operating Temperature | -55°C to 105°C | -55°C to 105°C |
| Inductance Test Frequency | 1 kHz | 1 kHz |
| Size / Dimension | 0.860" Dia (21.84 mm) | 0.860" Dia (21.84 mm) |
| Height - Seated (Max) | 0.450" (11.43 mm) | 0.450" (11.43 mm) |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8504.50.4000 | 8504.50.4000 |
Engineering Selection Recommendations
The 2124-H-RC is the direct active equivalent for the obsolete 2124-H. All electrical and mechanical parameters are identical, ensuring drop-in compatibility in existing circuit designs. The 2124-H-RC offers the additional advantage of ROHS3 compliance, making it suitable for applications subject to RoHS regulations. Both parts maintain REACH Unaffected status and share the same ECCN and HTSUS classifications. Selection of the 2124-H-RC eliminates obsolescence risk while maintaining full functional equivalence.
Frequently Asked Questions (FAQ)
Q: Can the 2124-H-RC replace the 2124-H in existing designs? A: Yes. The 2124-H-RC is electrically and mechanically identical to the 2124-H across all specified parameters, including inductance, current rating, DC resistance, dimensions, and operating temperature range.
Q: What is the primary difference between these parts? A: The 2124-H is obsolete with RoHS non-compliant status, while the 2124-H-RC is an active product with ROHS3 compliance. Electrical and mechanical specifications are equivalent.
Q: Are there packaging differences between the 2124-H and 2124-H-RC? A: The 2124-H uses standard packaging, while the 2124-H-RC is supplied in bulk packaging. Both maintain identical component specifications and through-hole radial horizontal orientation.
Q: Does the 2124-H-RC meet regulatory requirements? A: The 2124-H-RC is ROHS3 compliant and REACH Unaffected, making it suitable for applications requiring these certifications. The obsolete 2124-H is RoHS non-compliant.
Q: Are the physical dimensions identical? A: Yes. Both parts share identical dimensions: 0.860" diameter (21.84 mm) and maximum seated height of 0.450" (11.43 mm).
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