When looking at Sunon fans you will find that some have a four digit prefix, such as 4145/MF30101V1-1000U-A99 compared to MF30101V1-1000U-A99.
The four digit prefix is a control number that indicates the fan has been customized in some way but the number does not necessarily refer to a specific customization, they are used by Sunon to know how to build each fan. In this case the customized version has had a 2 position rectangular connector added to the leads, the original has 2 bare wire leads as can be seen on the datasheets. Please view this video for more information.
Available Customized Sunon Fans
| Digi-Key Part Number | Manufacturer Part Number |
|---|---|
| 259-2023-ND | 4127/MF30060V1-1000U-A99 |
| 259-2066-ND | 4084/MF80251V3-1000U-G99 |
| 259-2036-ND | 4143/MF60151VX-1000U-A99 |
| 259-2032-ND | 4138/MF25060V2-1000U-A99 |
| 259-2038-ND | 4145/MF30101V1-1000U-A99 |
| 259-4891HQ-EFP5D62B1-1C01U-G99-ND | 4891HQ-EFP5D62B1-1C01U-G99 |
| 259-4513HQ/MH40201V3-C03A-E99-ND | 4513HQ/MH40201V3-C03A-E99 |
| 259-2028-ND | 4133/MF40201VX-1000U-G99 |
| 259-4518HQ/EF50151B1-Q04A-A99-ND | 4518HQ/EF50151B1-Q04A-A99 |
| 259-4519HQ/MF80250V4-1Q02A-A99-ND | 4519HQ/MF80250V4-1Q02A-A99 |
| 259-4511HQ/MF80250V4-1Q02A-F99-ND | 4511HQ/MF80250V4-1Q02A-F99 |
| 259-4512HQ/MF50150V3-C01A-F99-ND | 4512HQ/MF50150V3-C01A-F99 |
| 259-4556HQ/EG50040S1-C912-S9A-ND | 4556HQ/EG50040S1-C912-S9A |
| 259-4517HQ/PF40201B1-1Q01A-A99-ND | 4517HQ/PF40201B1-1Q01A-A99 |
| 259-4558HQ/EG50060S1-C322-S9A-ND | 4558HQ/EG50060S1-C322-S9A |
| 259-4548HQ/EG50040S1-CG61-S9A-ND | 4548HQ/EG50040S1-CG61-S9A |
| 259-4890HQ-EFK6B51B1-1C01U-G99-ND | 4890HQ-EFK6B51B1-1C01U-G99 |
| 259-2022-ND | 4125/MF25101V2-1000U-A99 |
| 259-2042-ND | 4149/EF80251S1-1000U-A99 |
| 259-2044-ND | 4151/MF50100V1-1000U-A99 |
| 259-2043-ND | 4150/MF40100V1-1000U-A99 |
| 259-4553HQ/EG75070S1-C394-G99-ND | 4553HQ/EG75070S1-C394-G99 |
| 259-4555HQ/MG75090V1-1C090-S9A-ND | 4555HQ/MG75090V1-1C090-S9A |
| 259-2024-ND | 4129/HA40201V4-1000U-A99 |
| 259-2026-ND | 4131/MF50101V1-1000U-A99 |
| 259-2034-ND | 4140/MF40101VX-1000U-A99 |
| 259-4507HQ/MF40101V1-1Q04A-G99-ND | 4507HQ/MF40101V1-1Q04A-G99 |
| 259-4508HQ/MF40201V1-1D02A-G99-ND | 4508HQ/MF40201V1-1D02A-G99 |
| 259-2030-ND | 4136/MF92251V1-1000U-A99 |
| 259-2040-ND | 4147/MF80252V1-1000U-A99 |
| 259-2031-ND | 4137/MF40202V2-1000U-A99 |
| 259-2035-ND | 4142/MF40202V1-1000U-A99 |
| 259-1657-ND | 3161/MEC0251V1-000U-G99 |
| 259-2025-ND | 4130/MF25100V1-1000U-A99 |
| 259-2027-ND | 4132/MF30100V1-1000U-A99 |
| 259-2029-ND | 4134/MF25100V2-1000U-A99 |
| 259-2021-ND | 4124/MF25101V1-1000U-A99 |
| 259-2033-ND | 4139/MF30101V2-1000U-A99 |
| 259-4509HQ/PF40201B1-1Q01A-G99-ND | 4509HQ/PF40201B1-1Q01A-G99 |
| 259-1815-ND | 3660HQ-HA50151V4-1Q01U-Q99 |
| 259-4515HQ/MF40101V1-1Q04A-A99-ND | 4515HQ/MF40101V1-1Q04A-A99 |
| 259-4557HQ/EG50050S1-C711-S9A-ND | 4557HQ/EG50050S1-C711-S9A |
| 259-4550HQ/EG50060S1-C391-S9A-ND | 4550HQ/EG50060S1-C391-S9A |
| 259-4520HQ/MF50150V3-C01A-A99-ND | 4520HQ/MF50150V3-C01A-A99 |
| 259-4510HQ/EF50151B1-Q04A-F99-ND | 4510HQ/EF50151B1-Q04A-F99 |
| 259-4549HQ/EG50060S1-C331-S9A-ND | 4549HQ/EG50060S1-C331-S9A |
| 259-4552HQ/EG75050S1-C070-S9A-ND | 4552HQ/EG75050S1-C070-S9A |
| 259-4551HQ/EG75050S1-C031-S9A-ND | 4551HQ/EG75050S1-C031-S9A |
| 3249/UB5U3-500-ND | 3249/UB5U3-500 |
| 259-2041-ND | 4148/MF60252V1-1000U-A99 |
| 259-2037-ND | 4144/MF80252V3-1000U-A99 |