Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Model | 1336-BDB-SP34C |
| OEM Assembly Number | 74101-169-64 |
| Product Type | Gate Driver PC Board |
| Drive Family | 1336 AC Drives |
| Compatible Drive Families | 1336 Plus / Plus II / Impact / Force |
| Voltage Class | 460 VAC |
| Power Rating | 150 HP |
| Frame | E-Frame |
| Board Revision | C |
| Primary Function | Power-device gate control |
| Installation | Internal 1336 drive assembly |
| Status | Legacy / discontinued |
The available documentation consistently identifies 1336-BDB-SP34C as a gate-driver board, with 74101-169-64 as its associated board number.
One caution: some online listings incorrectly describe this part as a complete AC drive or give unrelated voltage/frequency specifications. Those descriptions conflict with the more specific spare-parts records identifying SP34C as a gate driver board. For procurement purposes, the latter identification is the technically useful one.
Application Scenarios & Pain Points
When a high-power 1336 drive stops switching correctly, the gate-driver PCB deserves attention alongside the IGBT/SCR power section. A replacement board alone does not necessarily cure the failure—especially if the original board was damaged by a failed power device.
1336-BDB-SP34C
Typical Applications
- 1336 Plus / Plus II Drives: Used as a gate-driver assembly in compatible 460 VAC drive configurations, including 150 HP applications.
- 1336 Impact and Force Drives: Available technical descriptions associate SP34C with these legacy 1336 families as well.
- Drive Repair Programs: Useful where the main control board remains serviceable but the gate-drive section has failed.
- Legacy Motor-Control Systems: Particularly relevant for plants maintaining older large-motor drives where a complete modernization would require changes to the motor-control cabinet and application software.
Field Case:
A common mistake is to install a replacement gate board immediately after a drive reports a power-stage fault. First inspect the associated power semiconductors, DC bus condition, gate-drive supplies, and board connectors. Otherwise, the replacement PCB may be exposed to the same fault that damaged the original.
Related Products
- Allen-Bradley 1336-BDB-SP37C — A related 1336 gate-driver board often referenced with later/higher-power configurations. It should not be substituted for SP34C without matching the drive’s exact voltage, frame, and horsepower.
- Allen-Bradley 1336-BDB-SP38D — Gate-driver board associated with a 460 VAC / 200 HP 1336STEF application. The higher horsepower rating makes it a different application from SP34C.
- Allen-Bradley 1336-BDB-SP39C — Another 1336 gate-driver variant associated with a higher-power 460 VAC application. It is not an automatic substitute for SP34C.
- Allen-Bradley 1336-BDB-SP30C — Earlier 1336 gate-driver board with OEM number 74101-169-54. It belongs to the same general gate-drive component family but has different application identification.
- Allen-Bradley 1336-BDB-SP31D — Related gate-driver assembly, identified as 74101-169-55. The different board number indicates a different application/configuration.
- Allen-Bradley 1336-BDB-SP41C — Another 1336 gate-driver board, identified as 74101-169-66. Similar function, but the complete drive application must be checked.
- Allen-Bradley 1336-BDB-SP43A — Related gate-driver assembly with 74101-169-83 identification. Useful as a family reference, not as a direct replacement without engineering verification.
- Allen-Bradley 1336-BDB-SP46C — Another 1336 gate-driver variant, listed with 74101-169-59. Its application differs from .
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do Not Match Only on “1336-BDB”
The 1336-BDB family contains numerous SP variants. is specifically associated with 74101-169-64.
How to avoid it: Match the complete SP number + revision + OEM assembly number + drive catalog number.
⚠️ Verify the 460 VAC / 150 HP Application
A physically similar gate board from another horsepower class can still be electrically wrong.
How to avoid it: Confirm the drive’s input voltage, horsepower, frame size, and exact 1336 family before installation. Do not use generic claims such as “fits all 1336 drives.”
⚠️ Check the Power Section Before Installing the Replacement
A failed SCR/IGBT or abnormal DC-bus condition can damage the gate-driver circuit again.
How to avoid it: With power isolated and the DC bus verified at zero, inspect the power devices, gate connections, fuses, connectors, and signs of carbonization or overheated solder joints before fitting the replacement.
Frequently Asked Questions (FAQ)
What is Allen-Bradley 1336-BDB-?
It is an Allen-Bradley 1336-series gate-driver PC board, associated with compatible 1336 AC drives. Available records identify the board as 74101-169-64 and associate it with a 460 VAC, 150 HP application.
What drive voltage and horsepower is 1336-BDB- for?
The available technical identification specifies 460 VAC and 150 HP, with an E-Frame drive application.
That is an important distinction when comparing against other 1336-BDB boards.
Is 1336-BDB- a complete AC drive?
No. It is a gate-driver PCB, not a complete inverter or drive cabinet. Some low-quality listings incorrectly label it as an AC drive and publish unrelated operating specifications.
For purchasing, specify “Gate Driver PC Board” and provide the complete part number.
What is the OEM number for 1336-BDB-?
The available spare-parts documentation lists 74101-169-64 alongside .
When sourcing a replacement, supplying both identifiers is preferable.
Can I replace with another 1336-BDB board?
Not without verification. The 1336-BDB family contains many electrically different variants. For example, the same spare-parts documentation distinguishes SP30C, SP31D, , SP38D, SP39C, SP41C, SP43A, and SP46C by separate assembly numbers.
The correct replacement should be established from the complete drive catalog number, not from physical appearance alone.
What should I request when buying a refurbished ?
Ask for:
- Actual PCB photographs.
- marking.
- 74101-169-64 identification.
- Revision information.
- Connector and terminal inspection.
- Gate-drive circuit test results.
- Fuse and protection-circuit inspection.
- Power-stage compatibility verification.
- Functional test report.
- Warranty terms.
For this board, “powers on” is not a meaningful acceptance criterion by itself. A proper test should establish that the gate-drive circuitry operates correctly under an appropriate test setup and that no underlying power-device fault remains in the host drive.
