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Bourns 9230-92 1 mH Axial Inductor Equivalent & Substitute Parts
Part Overview
The Bourns 9230-92 is a 1 mH unshielded molded inductor rated for 38 mA with 72 Ohm maximum DC resistance, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -55°C to 125°C with a self-resonant frequency of 3.4 MHz and quality factor of 30 at 790 kHz.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 1 mH |
| Inductance Tolerance | ±10% |
| Current Rating | 38 mA |
| DC Resistance (DCR) | 72 Ohm Max |
| Q @ Frequency | 30 @ 790 kHz |
| Self-Resonant Frequency | 3.4 MHz |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package | Axial |
| Physical Dimensions | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) |
| Operating Temperature Range | -55°C ~ 125°C |
Substitute Part Grouping Explanation
Substitute parts for the Bourns 9230-92 are classified based on strict electrical and mechanical parameter alignment:
Direct Substitute (Identical Specifications): The 9230-92-RC from Bourns Inc. maintains all electrical parameters of the original part (1 mH inductance, 38 mA current rating, 72 Ohm DCR, 30 Q @ 790 kHz) with identical physical dimensions and temperature range. The primary difference is packaging format (bulk versus tape & reel) and product status (active versus obsolete). RoHS3 compliance is an additional benefit.
Similar Substitutes (Reduced Current Rating): Parts from API Delevan Inc. (1025-92K, 1025R-92K, ER1025-92KM, ER1025-92KP, ER1025-92KR) share the same inductance value (1 mH), tolerance (±10%), DC resistance (72 Ohm max), Q factor (30 @ 790 kHz), self-resonant frequency (3.4 MHz), core material (ferrite), shielding (unshielded), mounting type (through hole), package style (axial), and physical dimensions (0.095" Dia x 0.250" L). However, these parts are rated for 28 mA maximum current, which is 26% lower than the original 38 mA rating. Additionally, the operating temperature range is limited to -55°C ~ 105°C, reducing the upper temperature capability by 20°C.
Parameter Comparison
| Parameter | 9230-92 (Bourns) | 9230-92-RC (Bourns) | 1025-92K (API Delevan) | 1025R-92K (API Delevan) | ER1025-92KM (API Delevan) | ER1025-92KP (API Delevan) | ER1025-92KR (API Delevan) |
|---|---|---|---|---|---|---|---|
| Inductance | 1 mH | 1 mH | 1 mH | 1 mH | 1 mH | 1 mH | 1 mH |
| Inductance Tolerance | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% |
| Current Rating (mA) | 38 | 38 | 28 | 28 | 28 | 28 | 28 |
| DC Resistance (DCR) | 72 Ohm Max | 72 Ohm Max | 72 Ohm Max | 72 Ohm Max | 72 Ohm Max | 72 Ohm Max | 72 Ohm Max |
| Q @ Frequency | 30 @ 790 kHz | 30 @ 790 kHz | 30 @ 790 kHz | 30 @ 790 kHz | 30 @ 790 kHz | 30 @ 790 kHz | 30 @ 790 kHz |
| Self-Resonant Frequency | 3.4 MHz | 3.4 MHz | 3.4 MHz | 3.4 MHz | 3.4 MHz | 3.4 MHz | 3.4 MHz |
| Core Material | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
| Shielding | Unshielded | Unshielded | Unshielded | Unshielded | Unshielded | Unshielded | Unshielded |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Axial | Axial | Axial | Axial | Axial | Axial | Axial |
| Physical Dimensions | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) |
| Operating Temperature Range | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| RoHS Status | RoHS non-compliant | RoHS3 Compliant | RoHS non-compliant | RoHS3 Compliant | RoHS non-compliant | RoHS non-compliant | RoHS non-compliant |
Engineering Selection Recommendations
For Direct Replacement (No Design Changes Required): The Bourns 9230-92-RC is the primary substitute, offering identical electrical and thermal specifications with the advantage of active product status and RoHS3 compliance. This part is suitable for applications requiring the full 38 mA current rating and extended temperature operation to 125°C.
For Applications with Reduced Current Headroom: API Delevan parts (1025-92K, 1025R-92K, ER1025-92KM, ER1025-92KP, ER1025-92KR) are suitable only when circuit current requirements do not exceed 28 mA. These parts are active products with established supply chains. The 1025R-92K offers RoHS3 compliance. The temperature range limitation to 105°C must be evaluated against application requirements.
Packaging Considerations: The 9230-92-RC is available in bulk packaging. API Delevan alternatives offer multiple packaging options: 1025-92K (standard), 1025R-92K (bulk), ER1025-92KM (tape & reel), ER1025-92KP (tape & reel), and ER1025-92KR (cut tape). Packaging selection depends on production volume and assembly process requirements.
Frequently Asked Questions (FAQ)
Q: Can the API Delevan 1025-92K be used as a direct replacement for the Bourns 9230-92?
A: The 1025-92K shares all electrical parameters except current rating. It is suitable only if circuit current does not exceed 28 mA. The operating temperature range is also reduced to -55°C ~ 105°C. If the application requires the full 38 mA rating or operation above 105°C, the Bourns 9230-92-RC is the appropriate choice.
Q: What is the difference between the various API Delevan ER1025 part numbers?
A: The ER1025-92KR, ER1025-92KP, and ER1025-92KM variants are electrically identical but differ in packaging format. ER1025-92KR is supplied in cut tape, ER1025-92KP in tape & reel, and ER1025-92KM in tape & reel. All three are rated for 28 mA and operate to 105°C maximum.
Q: Is RoHS compliance a factor in selecting a substitute?
A: RoHS compliance status is determined by application requirements and regional regulations. The Bourns 9230-92-RC and API Delevan 1025R-92K are RoHS3 compliant. The original 9230-92 and other API Delevan variants are RoHS non-compliant. This distinction is relevant for applications subject to RoHS directives.
Q: Can I use the 1025R-92K in place of the 9230-92-RC?
A: The 1025R-92K is electrically compatible with the 9230-92-RC for applications with current requirements not exceeding 28 mA and operating temperatures not exceeding 105°C. Both are RoHS3 compliant and available in bulk packaging. The choice between them depends on supplier availability and cost considerations.
Q: What are the key parameters that determine substitutability?
A: Substitutability is determined by inductance value (1 mH), inductance tolerance (±10%), DC resistance (72 Ohm max), core material (ferrite), shielding (unshielded), mounting type (through hole), package style (axial), and physical dimensions (0.095" Dia x 0.250" L). Current rating and operating temperature range are critical constraints that may limit substitution options depending on application requirements.
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