| PartNumber | HM78D-128221KLFTR | HM78D-128220MLFTR | HM78D-128270MLFTR |
| Description | Coupled Inductors 220uH 10% | Coupled Inductors 22uH 20% | Coupled Inductors 27uH 20% INDUCTOR |
| Manufacturer | TT Electronics | TT Electronics | TT Electronics/BI Magnetics |
| Product Category | Coupled Inductors | Coupled Inductors | Arrays, Signal Transformers |
| RoHS | Y | Y | - |
| Series | HM78D | HM78D | HM78D |
| Inductance Parallel | 220 uH | 22 uH | - |
| Inductance Series | 880 uH | 88 uH | - |
| Tolerance | 10 % | 20 % | ±20% |
| Maximum DC Current | 2.3 A | 6.8 A | 6.5 A |
| Maximum DC Resistance | 345 mOhms | 48 mOhms | 60 mOhms |
| Length | 12.5 mm | 12.5 mm | 12.5 mm |
| Width | 12.5 mm | 12.5 mm | 12.5 mm |
| Height | 8.05 mm | 8.05 mm | 0.317" (8.05mm) |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Reel | Reel | Tape & Reel (TR) |
| Product | Coupled Inductors | Coupled Inductors | Coupled Inductors |
| Termination Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Type | Surface Mount Coupled Inductor | Surface Mount Coupled Inductor | Surface Mount Coupled Inductor |
| Brand | BI Technologies / TT Electronics | BI Technologies / TT Electronics | - |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Product Type | Coupled Inductors | Coupled Inductors | - |
| Factory Pack Quantity | 500 | 500 | - |
| Subcategory | Inductors, Chokes & Coils | Inductors, Chokes & Coils | - |
| Operating Temperature Range | - | - | - 40 C to + 85 C |
| Package Case | - | - | Nonstandard |
| Operating Temperature | - | - | -40°C ~ 125°C |
| Mounting Type | - | - | Surface Mount |
| Size Dimension | - | - | 0.492" L x 0.492" W (12.50mm x 12.50mm) |
| Shielding | - | - | Shielded |
| Number of Coils | - | - | 2 |
| Inductance Connected In Series | - | - | 108μH |
| Inductance Connected In Parallel | - | - | 27μH |
| Current Rating Parallel | - | - | 4.7A |
| Current Rating Series | - | - | 2A |
| Current Saturation Parallel | - | - | 6.5A |
| Current Saturation Series | - | - | 3.4A |
| DC Resistance DCR Parallel | - | - | 60 mOhm |
| DC Resistance DCR Series | - | - | 240 mOhm |
| Inductance Parallel | - | - | 27 uH |
| Inductance Series | - | - | 108 uH |