Description
Delta Electronics SMP-53BH AT Computer Power Supply 52W 100-240V Rev B0 1991
The Delta Electronics SMP-53BH is a 52.64W AT form factor power supply built for vintage desktop computers requiring the older AT connector standard. It features a universal wide-range input (100–240V AC) that makes it compatible with both North American and international mains voltages, and it delivers regulated DC outputs across multiple voltage rails via an AT motherboard connector and Molex 4-pin peripheral leads.
Specifications & What's Included
- Manufacturer: Delta Electronic Ind. Co., Ltd.
- Model: SMP-53BH
- Revision: Rev B0
- Form Factor: AT (legacy desktop)
- Total Output Power: 52.64W
- Input Voltage: 100–240V AC (universal)
- Input Current: 1.5A
- Input Frequency: 47–63Hz
- Output +12V: 0.92A
- Output -5V: 0.5A
- Output -12V: 0.3A
- Input Connector: IEC C14 (standard 3-pin AC inlet)
- Output: AT motherboard connector + Molex 4-pin peripheral leads (wire harness included)
- Certifications: CSA
- Country of Manufacture: Taiwan, R.O.C.
- Date Code: 9106 (June 1991)
Applications
The AT power supply form factor preceded the now-universal ATX standard and was the dominant desktop PC power connector format through the mid-1990s. AT supplies like the SMP-53BH powered computers using the original IBM AT-style cases and motherboards — systems such as 286, 386, and early 486 desktop PCs — connecting via a split two-piece AT motherboard power connector rather than the single ATX 20/24-pin plug that replaced it around 1995. Today these units are sought by vintage PC enthusiasts restoring period-correct builds, by hobbyists maintaining legacy industrial or embedded systems that retained AT-style power headers, and by technicians needing a direct replacement for a failed AT PSU in an older machine. The SMP-53BH's wide 100–240V input range is a practical advantage over earlier single-voltage AT supplies, giving it more flexibility in varied power environments.
This Delta Electronics SMP-53BH 52W AT power supply has been bench-tested at our facility and is in good working condition. The unit shows light cosmetic wear typical of pulled surplus equipment — minor scuffing on the metal housing and some age to the orange warning label — but is clean overall. The output wire harness with AT motherboard and Molex 4-pin peripheral connectors is intact and present. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Delta Electronics |
Model: |
SMP-53BH |
MPN: |
SMP-53BH |
Secondary Model: |
SMP-53BB |
Hardware Revision: |
Rev B0 |
Type: |
AT Computer Power Supply |
Form Factor: |
AT |
Maximum Output Power: |
52.64W |
Input Voltage: |
100-240V AC |
Input Current: |
1.5A |
Input Frequency: |
47-63Hz |
Output +12V: |
0.92A |
Output -5V: |
0.5A |
Output -12V: |
0.3A |
Power Requirements: |
100-240V AC, 1.5A, 47-63Hz |
Main Connector: |
AT Motherboard Connector |
Peripheral Connectors: |
Molex 4-pin peripheral |
Modular: |
No |
Country/Region of Manufacture: |
Taiwan |
Date Code: |
9106 (June 1991) |
Certifications: |
CSA |
SKU: |
21705 |
Seller Notes: |
Includes output wire harness with AT motherboard and Molex peripheral connectors. |
Condition Notes: |
This Delta Electronics SMP-53BH 52W AT power supply has been bench-tested at our facility and is in good working condition. Shows light cosmetic wear; output wire harness is intact. Please view our photos and contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |