Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Part Number | 1336-BDB-SP44C |
| Product Type | Gate Driver PC Board |
| Drive Family | Bulletin 1336 |
| Rated Voltage Reference | 460 VAC |
| Horsepower Reference | 350 HP |
| Primary Function | Gate-drive control for power switching devices |
| Board Number Reference | 74101-169-58 |
| PCB Revision Example | Rev. 13 has been documented |
| Installation | Internal 1336 drive assembly |
| Application | High-power AC motor drives |
| Lifecycle | Legacy / obsolete hardware |
| Condition | New Surplus / Tested Refurbished |
The strongest product-specific listing identifies 1336-BDB-SP44C as a PCB, Gate Driver, Series 1336, 460 VAC, 50/60 Hz, 350 horsepower.
A separate actual-board record identifies 74101-169-58 and Rev 13, which is useful when comparing physical stock against an installed board.
I would not rely on generic online claims such as “3.3 V input,” “20 kHz switching,” or “DIN-rail mounting” for this part. Those specifications appear on secondary pages without credible evidence that they describe the actual 1336-BDB-SP44C assembly.
Application Scenarios & Pain Points
A gate-driver fault on a large legacy drive is expensive to troubleshoot because the symptoms can overlap with failures in the IGBT/power module, DC bus, control board, or gate wiring. Swapping the PCB first is often the wrong diagnostic sequence.
Typical Applications
- High-Power 1336 Drives: The published specification associates this board with 460 VAC, 350 HP applications.
- Motor-Control Power Sections: The board handles the gate-drive side of the power conversion circuitry, making it directly relevant when a drive has power-stage switching faults.
- Legacy Plant Equipment: Suitable as a repair spare where an existing 1336 drive remains operationally important and replacing the complete drive would require mechanical, electrical, and commissioning work.
- Drive Overhaul Projects: A known-good BDB board can be useful during refurbishment when the existing board has burned components, damaged gate circuitry, or failed electrical testing.
Field Case:
On a high-power drive, a burned gate-driver board is sometimes only the visible casualty. Check the associated power semiconductors before installing the replacement. A shorted device can put excessive stress back onto the new board during the first energization.
1336-BDB-SP44C
Related Products
- Allen-Bradley 1336-BDB-SP30C — Another 1336 gate-driver PCB, but associated with a different drive rating/application. It should not be substituted for SP44C simply because both carry the BDB designation.
- Allen-Bradley 1336-BDB-SP30D — Related/later BDB designation. The exact voltage, horsepower, frame, and revision requirements must be checked before considering it as a replacement.
- Allen-Bradley 1336-BDB-SP44D — Closely related SP44-series gate-driver designation. It is a logical replacement candidate to investigate, but the complete drive catalog number and board revision must be confirmed before installation.
- Allen-Bradley 1336-MCB Series — Main control boards used in 1336 drives. These handle higher-level drive control and are functionally different from the BDB gate-driver board.
- Allen-Bradley 1336S-MCB-SP1B — Main control PCB for 1336S B-H frame drives. Useful as a related legacy-drive reference, but it is not a substitute for the 1336-BDB-SP44C.
- Allen-Bradley 1336-BDB-SP44C 74101-169-58 — The same primary board identified by an internal PCB number. When sourcing used stock, comparing this number can help confirm that the physical assembly corresponds to the requested part.
- Allen-Bradley 1336 Power Components — Associated power-stage assemblies must be inspected when a BDB has failed. The gate board and power semiconductor section should be treated as one troubleshooting chain.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do Not Treat SP44C as a Generic 1336 Gate Board
The BDB family contains multiple rating-specific boards. The identification is tied to a particular high-power application; published data identifies 460 VAC / 350 HP.
How to avoid it: Record the complete drive nameplate information before ordering—voltage, horsepower, frame, series, and catalog number.
⚠️ Check the PCB Number and Revision
Actual-board records identify 74101-169-58, including a documented Rev. 13 example.
How to avoid it: Ask the supplier for clear photographs of the PCB marking, revision, connectors, and component side. Do not approve a replacement from the external part number alone.
⚠️ Test the Power Stage Before Energizing a Replacement Board
A failed IGBT or other power device can be the reason the original gate board failed.
How to avoid it: With power fully isolated and the DC bus safely discharged, check the associated power devices and gate circuits according to the applicable service procedure. Do not simply install the replacement and apply full line voltage.
Frequently Asked Questions (FAQ)
What is Allen-Bradley 1336-BDB-?
It is a Gate Driver PC Board used within the power electronics of a Bulletin 1336 AC drive. Available product-specific information identifies the version with 460 VAC and 350 HP.
What voltage and horsepower is associated with?
The strongest available specification identifies it as 460 VAC, 50/60 Hz, 350 HP.
For procurement, treat those figures as application-identification data rather than assuming the board can be used in every 460 VAC 1336 drive.
Is a PLC or I/O module?
No. It is a gate-driver PCB for a 1336 AC drive. Its job is associated with controlling the power-switching section, not processing PLC I/O.
Is the same as 1336-BDB-SP30C?
No. Both are BDB gate-driver boards, but the part numbers distinguish different drive applications. The SP30C, for example, has a different rating/application identification from the .
Do not cross-substitute them based solely on the common 1336-BDB prefix.
What PCB number should I look for?
One documented physical board carries 74101-169-58, with a Rev. 13 example reported.
When buying used or surplus stock, request a photograph of this marking along with the complete label.
Can 1336-BDB-SP44D replace ?
It may be a replacement candidate, but I would not approve it without checking the specific 1336 drive configuration and documentation. A suffix change can represent a hardware revision rather than a universal compatibility statement.
What should I request when buying a refurbished ?
Ask for:
- Actual PCB photographs
- Complete part-number marking
- 74101-169-58 or other board identification
- PCB revision
- Connector condition
- Inspection for burned gate components
- Power-stage compatibility confirmation
- Functional test evidence
- ESD-safe handling
- Warranty terms
For this type of board, “powers on” is not a meaningful standalone acceptance test. The useful test is performed in an appropriate 1336 drive environment or with a documented electrical test procedure.
