Request Quote
(Ships tomorrow)
70F683AI-RC Equivalent & Substitute Parts
Part Overview
The 70F683AI-RC is a 6.8 mH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 43 mA maximum current with 78 Ohm DC resistance. This component is classified as obsolete, making identification of suitable equivalent parts essential for ongoing design support and production continuity. The part operates across a temperature range of -55°C to 105°C and meets ROHS3 compliance requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 6.8 mH |
| Inductance Tolerance | ±5% |
| Current Rating | 43 mA |
| DC Resistance (DCR) | 78 Ohm Max |
| Core Type | Drum Core, Wirewound |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package | Axial |
| Operating Temperature | -55°C to 105°C |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the 70F683AI-RC is determined by the following critical parameters:
- Inductance Value: Must be 6.8 mH (primary electrical requirement)
- Mounting Type: Must be Through Hole to maintain PCB compatibility
- Package Type: Must be Axial to fit existing board layouts
- Shielding: Must be Unshielded to match electromagnetic characteristics
- Current Rating: Must meet or exceed 43 mA minimum requirement
- DC Resistance: Lower DCR values are acceptable as they represent improved performance
- Operating Temperature Range: Must encompass or exceed the -55°C to 105°C specification
- RoHS Compliance: Must maintain ROHS3 compliance status
Two substitute parts meet these criteria: AIAP-02-682K (Abracon LLC) and B82145A1685J000 (EPCOS - TDK Electronics).
Parameter Comparison
| Parameter | 70F683AI-RC (Bourns) | AIAP-02-682K (Abracon) | B82145A1685J000 (EPCOS) |
|---|---|---|---|
| Inductance | 6.8 mH | 6.8 mH | 6.8 mH |
| Inductance Tolerance | ±5% | ±10% | ±5% |
| Current Rating (Amps) | 43 mA | 150 mA | 130 mA |
| DC Resistance (DCR) | 78 Ohm Max | 16.3 Ohm Max | 28.5 Ohm Max |
| Core Type | Drum Core, Wirewound | Wirewound | Drum Core, Wirewound |
| Shielding | Unshielded | Unshielded | Unshielded |
| Operating Temperature | -55°C to 105°C | -40°C to 85°C | -55°C to 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | Axial | Axial | Axial |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active | Active |
Engineering Selection Recommendations
AIAP-02-682K (Abracon LLC) is suitable for applications where the original 70F683AI-RC is no longer available. This part exceeds the current rating requirement (150 mA vs. 43 mA) and provides significantly lower DC resistance (16.3 Ohm vs. 78 Ohm). The inductance tolerance is wider (±10% vs. ±5%), and the operating temperature range is narrower (-40°C to 85°C vs. -55°C to 105°C). This substitute is appropriate for applications operating within the -40°C to 85°C range where the tighter tolerance of the original is not critical.
B82145A1685J000 (EPCOS - TDK Electronics) is suitable for applications requiring extended temperature performance. This part maintains the ±5% inductance tolerance of the original, exceeds the current rating (130 mA vs. 43 mA), and provides lower DC resistance (28.5 Ohm vs. 78 Ohm). The operating temperature range extends to 125°C, providing superior high-temperature capability. Both parts are active products with established supply chains.
Selection between the two substitutes depends on application-specific requirements: AIAP-02-682K for standard temperature range applications with lower resistance priority, or B82145A1685J000 for extended temperature range applications with tolerance matching.
Frequently Asked Questions (FAQ)
Q: Can AIAP-02-682K be used in applications requiring the full -55°C to 105°C temperature range?
A: No. AIAP-02-682K operates only to -40°C minimum and 85°C maximum. Applications requiring the full original temperature range must use B82145A1685J000.
Q: Does the lower DC resistance of the substitute parts affect circuit performance?
A: Lower DC resistance reduces power dissipation in the inductor. Circuit behavior depends on whether the original 78 Ohm resistance was a design requirement or a tolerance specification. Verify that the lower resistance values do not alter intended circuit impedance or filtering characteristics.
Q: Are the substitute parts physically compatible with the original PCB layout?
A: Both substitutes use axial through-hole packaging. Physical dimensions differ: AIAP-02-682K measures 0.252" Dia x 0.551" L, and B82145A1685J000 measures 0.256" Dia x 0.472" L, compared to the original 0.310" Dia x 0.380" L. Verify that board hole spacing and component clearances accommodate the substitute dimensions.
Q: What is the significance of the inductance tolerance difference?
A: The original 70F683AI-RC and B82145A1685J000 both specify ±5% tolerance, while AIAP-02-682K specifies ±10%. For applications where inductance value precision is critical to circuit function, B82145A1685J000 maintains the original tolerance specification.
Q: Are all substitute parts RoHS compliant?
A: Yes. Both AIAP-02-682K and B82145A1685J000 are ROHS3 compliant, matching the original part's compliance status.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts