Surge suppressors – QMSR
The QMSR surge suppressor family is described by the configuration-specific ratings in the following tables. Wide input-voltage range, No additional power supply required. Maximum output current: 2A, 3A, 4.5A, 5A, 10A. Input surge-voltage suppression. Refer to the selection table, pin assignments and application guidance for the selected configuration.
Input voltage (V)
Voltage drop (V)
Output current (A)
Ratings apply to the selected configuration. See the datasheet for test conditions and model designation notes.
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Surge suppressors - QMSR
The QMSR surge suppressor family is described by the configuration-specific ratings in the following tables. Wide input-voltage range, No additional power supply required. Maximum output current: 2A, 3A, 4.5A, 5A, 10A. Input surge-voltage suppression. Refer to the selection table, pin assignments and application guidance for the selected configuration.
- Wide input-voltage range, No additional power supply required
- Maximum output current: 2A, 3A, 4.5A, 5A, 10A
- Input surge-voltage suppression
- Spike/surge performance conforms to GJB 181-86, GJB 181A
Product Selection
| Model | Input voltage (V) | Voltage drop (V) | Output current (A) | Overvoltage surge clamping- voltage range (V) | Undervoltage transient clampi ng-voltage range (V) | Operating temperature (T) C | Case type |
|---|---|---|---|---|---|---|---|
| QMSR-2803AM | 8 to 36 | 0.6 | 3 | 34 to 44 | — | -55 to 105 | A |
| QMSR-2810BM | 8 to 36 | 0.6 | 10 | 34 to 44 | — | -55 to 105 | B |
| QMSR-2805CM | 8 to 36 | 0.6 | 5 | 34 to 44 | — | -55 to 105 | C |
| QMSR-2802SM | 18 to 36 | 0.5 | 2 | ≤40 | ≤23 | -55 to 105 | — |
| QMSR-2805SM | 18 to 36 | 1 | 4.5 | 36 to 40 | 17 to 21 | -55 to 85 | — |



Technical Data — QMSR
| Characteristic | Test temperature | Min. | Typ. | Max. | Unit | Conditions |
|---|---|---|---|---|---|---|
| Input voltage range | Room, High, Low | 8 | 28 | 36 | V | 28 series, see the product selection table |
| Voltage drop | Room, High, Low | — | — | 0.6 | V | see the product selection table |
| Input surge voltage | Room | — | — | 80 | V | Vt=50ms, interval 1 minutes, total 5 operations, full load |
| Surge-clamping voltage | Room | 34 | — | 44 | V | 28 series |
| Output current | Room, High, Low | see the pro duct s electio n table | full input-voltage range | |||
| Insulation resistance | Room | 100 | — | — | MΩ | 500Vdc, input/output to case |
| Steady-state operating-voltage range (VIN) | Room, High, Low | 18 | 28 | 36 | V | full load |
| overvoltage surge (in accordance with GJB 181-86) | Room, High, Low | — | — | 80 | V | full load, transient 50ms |
| undervoltage transient | Room, High, Low | 8 | — | — | V | full load, transient 1s |
| Interval between successive surges (in accordance with GJB 181-86, Input voltage 80Vdc/50ms) | Room, High, Low | 1 | — | — | min | full load, Overvoltage surge input |
| Number of overvoltage surges | Room, High, Low | — | — | 5 | operatio ns | full load, Overvoltage surge input |
| Undervoltage transient duration | Room, High, Low | — | — | 1 | s | full load, Undervoltage transient input |
| input - Output voltage difference ΔV | Room, High, Low | see the pro duct s electio n table | full load, outside the surge interval | |||
| Output voltage | Room, High, Low | — | VIN-Δ V | — | V | full load, Input voltage 18V to 36V |
| Output voltage | Room, High, Low | see the pro duct s electio n table | full load, input voltage during an undervoltage transient 8V to 18V | |||
| Output voltage | Room, High, Low | see the pro duct s electio n table | full load, input voltage during an overvoltage transient 36V to 80V | |||
| Output current | Room, High, Low | see the pro duct s electio n table | Input voltage 18V to 36V | |||
| Output power; QMSR-2802SM | Room, High, Low | — | — | 50 | W | Input voltage 80V/50ms |
| Output power; QMSR-2802SM | Room, High, Low | — | — | 36 | W | Input voltage 8V to 18V |
| Output power; QMSR-2805SM | Room, High, Low | — | — | 100 | W | Input voltage 80V/50ms |
| Output power; QMSR-2805SM | Room, High, Low | — | — | 80 | W | Input voltage 8V to 18V |
| Output voltage ripple | Room | — | — | 50 | mV | nominal input, 20MH bandwidth |
| Efficiency | Room | 96 | 98 | % | full load, nominal input | |
| Remote control logic a | Room, High, Low | ground to disa ble, en abled when open | positive logic, Logic reference ground COM | |||
| Start-up delay | Room | — | — | 50 | ms | |
| Isolation voltage | — | — | — | 500 | Vdc | input/output to case |
| Operating temperature (TC) | — | see the pro duct s electio n table | ||||
| Storage temperature | — | -55 | — | 125 | °C |
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