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| Part Number | 125ESE | 125E |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing |
| Series | 125SE | 125 |
| Packaging | Bulk | Bulk |
| Product Status | Active | Active |
| Turns Ratio - Primary:Secondary | - | - |
| Impedance - Primary (Ohms) | 2.5k ~ 10k | 1.2k ~ 25k |
| Impedance - Secondary (Ohms) | 4 ~ 32 | 1.5 ~ 15 |
| DC Resistance (DCR) - Primary | 100.5Ohm | - |
| DC Resistance (DCR) - Secondary | 590mOhm | - |
| Transformer Type | General Purpose | General Purpose |
| Frequency Range | 100Hz ~ 15kHz | 150Hz ~ 15kHz |
| Frequency Response | ±1dB | ±1dB |
| Voltage - Isolation | 1500V @ 1 Second | - |
| Insertion Loss | - | - |
| Return Loss | - | - |
| Power Level | 15W | 15W |
| Operating Temperature | - | - |
| Approval Agency | - | - |
| Mounting Type | Chassis Mount | Chassis Mount |
| Size / Dimension | 4.500" L x 2.360" W (114.30mm x 59.94mm) | 3.690" L x 2.000" W (93.73mm x 50.80mm) |
| Height - Seated (Max) | 2.940" (74.68mm) | 2.310" (58.67mm) |
| Termination Style | Wire Leads | Wire Leads |
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