| Part Number | M550B128M040TS | M550B128M050TS | 
|---|---|---|
| Manufacturer | KEMET | KEMET | 
| Category | Tantalum - Polymer Capacitors | Tantalum - Polymer Capacitors | 
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| Product Status | Active | Active | 
| Capacitance | 1200 µF | 1200 µF | 
| Tolerance | ±20% | ±20% | 
| Voltage - Rated | 40 V | 50 V | 
| Type | Hermetically Sealed | Hermetically Sealed | 
| ESR (Equivalent Series Resistance) | 20mOhm @ 100kHz | 15mOhm @ 100kHz | 
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 105°C | 
| Lifetime @ Temp. | 2000 Hrs @ 85°C | 2000 Hrs @ 85°C | 
| Mounting Type | Chassis Mount | Chassis Mount | 
| Package / Case | M55 Module | M55 Module | 
| Size / Dimension | 2.051" L x 1.992" W (52.10mm x 50.60mm) | 2.051" L x 1.992" W (52.10mm x 50.60mm) | 
| Height - Seated (Max) | 0.520" (13.20mm) | 0.520" (13.20mm) | 
| Lead Spacing | - | - | 
| Manufacturer Size Code | B | B | 
| Ratings | - | - | 
| Features | High Reliability | High Reliability |