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| Part Number | ER1840-20JR | 
| Datasheet | ER1840-20JR datasheet | 
| Description | FIXED IND 3.9UH 870MA 155 MOHM | 
| Manufacturer | API Delevan Inc. | 
| Series | ER1840 | 
| Part Status | Active | 
| Type | Molded | 
| Material - Core | Iron | 
| Inductance | 3.9µH | 
| Tolerance | ±5% | 
| Current Rating | 870mA | 
| Current - Saturation | - | 
| Shielding | Unshielded | 
| DC Resistance (DCR) | 155 mOhm Max | 
| Q @ Freq | 30 @ 7.9MHz | 
| Frequency - Self Resonant | 65MHz | 
| Ratings | - | 
| Operating Temperature | -55°C ~ 105°C | 
| Inductance Frequency - Test | 7.9MHz | 
| Features | - | 
| Mounting Type | Through Hole | 
| Package / Case | Axial | 
| Supplier Device Package | - | 
| Size / Dimension | 0.187" Dia x 0.437" L (4.75mm x 11.10mm) | 
| Height - Seated (Max) | - |