IBM 00J0254 Processor Voltage Regulator Module (VRM)

Here are the technical specifications and detailed details for the IBM 00J0254 Processor Voltage Regulator Module (VRM) / VPD Card.

Core Overview

• Manufacturer: IBM

• Product Type: Processor Voltage Regulator Module (VRM) / Vital Product Data (VPD) Assembly

• Design Classification: High-Availability Power Regulation & Telemetry

• CCIN (Customer Card Identification Number): 2B50

Part Number Cross-Reference (FRU / Substitutes)

The 00J0254 part number belongs to the same hardware ecosystem as the 74Y9189 and 00E7160/00E7162 series but features specialized EEPROM routing to store system configuration variables alongside direct voltage conversion.

• Primary Part Number (MPN): 00J0254

• Associated Component IDs: VRA004 Series / 2B50 Architecture Group

• Cross-Family Functionality: Co-exists or alternates with high-capacity VRM profiles (74Y9189, 00E7160, 00E7162) depending on the exact processor card drawing load.

Hardware Compatibility

This module is tailored for mid-to-late generation IBM Power Systems (POWER7 / POWER7+) infrastructure. It interfaces with specific CPU sockets and system backplanes to regulate low-voltage rails:

• IBM Power 720 Express:

  • Machine Type-Model (MTM): 8202-E4D

• IBM Power 740 Express:

  • Machine Type-Model (MTM): 8205-E6C

  • Machine Type-Model (MTM): 8205-E6D

(Note: In POWER7+ configurations, this card acts simultaneously as a point-of-load regulator and a tracking module for the CPU sub-plane).

Physical Specifications

• Form Factor: Proprietary Plug-in Server VRM Module with integrated vertical blade connector profile.

• Dimensions: Approx. 15.0 cm x 13.0 cm x 4.0 cm

• Weight: ~0.28 kg to 0.50 kg (varies depending on specific server-chassis mounting brackets attached).