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| Part Number | MF-R050-2-99 | MF-R250-2-99 | MF-R090-2-99 | MF-R010-2-99 | MF-R020-2-99 | MF-R030-2-99 | MF-R040-2-99 | MF-R050-0-99 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Type | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 60V | 30V | 60V | 60V | 60V | 60V | 60V | 60V |
| Current - Max | 40 A | 40 A | 40 A | 40 A | 40 A | 40 A | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 500 mA | 2.5 A | 900 mA | 100 mA | 200 mA | 300 mA | 400 mA | 500 mA |
| Current - Trip (It) | 1 A | 5 A | 1.8 A | 200 mA | 400 mA | 600 mA | 800 mA | 1 A |
| Time to Trip | 4 s | 10.3 s | 7.2 s | 4 s | 2.2 s | 3 s | 3.8 s | 4 s |
| Resistance - Initial (Ri) (Min) | 410 mOhms | 25 mOhms | 140 mOhms | 2.5 Ohms | 1.5 Ohms | 760 mOhms | 520 mOhms | 410 mOhms |
| Resistance - Post Trip (R1) (Max) | 1.17 Ohms | 70 mOhms | 470 mOhms | 7.5 Ohms | 4.4 Ohms | 2.1 Ohms | 1.29 Ohms | 1.17 Ohms |
| Resistance - 25°C (Typ) | - | - | - | - | - | - | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - | - | - | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.311" Dia x 0.122" T (7.90mm x 3.10mm) | 0.472" L x 0.118" W (12.00mm x 3.00mm) | 0.461" L x 0.122" W (11.70mm x 3.10mm) | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.311" Dia x 0.122" T (7.90mm x 3.10mm) |
| Height - Seated (Max) | 0.539" (13.70mm) | 0.720" (18.30mm) | 0.657" (16.70mm) | 0.500" (12.70mm) | 0.500" (12.70mm) | 0.528" (13.40mm) | 0.539" (13.70mm) | 0.539" (13.70mm) |
| Thickness (Max) | - | - | - | - | - | - | - | - |
| Lead Spacing | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.201" (5.10mm) |
