| MM5034N | | part details | | NSC | | 90 | | Ships Today | | 10 |
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| SAB-C503-LN | | part details | | Siemens | | 9501 | | Avail | | 198 |
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| 503LT | | part details | | RS PRO | | | Avail | | 62 |
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| MC503L | | part details | | MOTOROL | | | Avail | | 44 |
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| MC503L | | part details | | MOTOROLA | | | Avail | | 29 |
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| ODDM-503-LP | | part details | | tom@electronics-direct.co | | | Avail | | 11 |
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| CSE-503L-200B | | part details | | SUPERMICRO | | N/A | | Avail | | 9 |
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| SI503L | | part details | | | 01 | | Avail | | 8 |
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| EPM503LC-15 | | part details | | ALTERA | | | Avail | | 4 |
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| GDP503L220V | | part details | | Carlo Gavazzi | | | Avail | | 4 |
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