Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Model | 1336-BDB-SP5D |
| Product Type | Gate Driver PCB |
| Drive Family | 1336STE / 1336F |
| Voltage Class | 460 VAC |
| Power Rating | 25 HP |
| 1336STE Compatibility | Series C and later |
| 1336F Compatibility | Series A and later |
| Primary Function | Power-device gate control |
| Installation | Internal 1336 drive assembly |
| Related Previous Revision | 1336-BDB-SP5C |
| Current Replacement for SP5C | 1336-BDB-SP5D |
| Status | Legacy / service part |
Rockwell’s published spare-parts list specifically describes 1336-BDB-SP5D as a PCB, Gate Driver, 1336STE, 460V, 25 HP, Series C & up, and also identifies the 1336F 460 V, 25 HP Series A-and-up application.
One useful procurement distinction: current legacy-part listings can also identify SP5D under the broader 1336STG gate-drive family. That does not mean every 1336STG application is interchangeable with SP5D. Match the original drive catalog number and power rating before approving the substitution.
Application Scenarios & Pain Points
With a legacy 1336 drive, a switching fault is rarely isolated to one PCB. The gate-driver board works directly with the drive’s power section, so a damaged IGBT or abnormal DC-bus condition can take out a replacement board if the underlying failure is missed.
Typical Applications
- 1336STE Drives: The primary documented application is 460 VAC / 25 HP / Series C and later.
- 1336F Drives: Rockwell’s parts list also identifies the SP5D for 460 VAC / 25 HP / Series A and later 1336F drives.
- Legacy Motor-Control Cabinets: Useful for maintaining installed 1336 equipment where replacing the entire drive would introduce mechanical, electrical, and commissioning work.
- Drive Repair and Spare Stock: A tested SP5D makes sense as a shelf spare when a plant still has multiple compatible 25 HP 460 V drives in operation.
Field Case:
A technician sees a drive with no normal motor output and assumes the main control board has failed. The faster route is often to check the gate-drive section and power devices first. If the DC bus, power transistors, gate-drive supply, and control signals are healthy, then the becomes a much more defensible replacement target.
1336-BDB-SP5D
Related Products
- Allen-Bradley 1336-BDB-SP5C — Earlier SP5 gate-driver revision. Rockwell lists SP5C as obsolete and specifies as its replacement. It is relevant when identifying an existing older board, but is the preferred later revision where the drive configuration permits it.
- Allen-Bradley 1336-BDB-SP4D — 460 VAC gate-driver PCB for 1336STE, 20 HP applications. Same general function, but lower power rating than .
- Allen-Bradley 1336-BDB-SP6D — 460 VAC gate-driver PCB for 1336STE, 30 HP applications. It is the next power class above and should not be treated as a direct substitute.
- Allen-Bradley 1336-BDB-SP3D — 460 VAC gate-driver PCB for 1336STE, 15 HP applications. Appropriate for smaller drives in the same general family.
- Allen-Bradley 1336-BDB-SP2D — Gate-driver PCB for 1336ST, 460 VAC, 10 HP applications. Its drive family and power class differ from .
- Allen-Bradley 1336-BDB-SP7D — 575 VAC gate-driver PCB for 1336ST, 7.5 HP. Similar function but a different voltage class, so it is not an replacement.
- Allen-Bradley 1336-BDB-SP17D — 460 VAC gate-driver PCB for a 1336STEF, 40 HP application. It belongs to the higher-power STEF group.
- Allen-Bradley 1336-BDB-SP38D — 460 VAC gate-driver PCB for a 1336STEF, 200 HP drive. Same basic gate-drive function, radically different power application.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do Not Substitute by Horsepower Alone
is documented for 25 HP / 460 VAC, but the drive family and revision also matter. A 25 HP board from another 1336 variant is not automatically equivalent.
How to avoid it: Record the complete drive catalog number, voltage, horsepower, series/revision, and existing gate-board number before ordering.
⚠️ SP5C and Are Revision-Specific
Rockwell identifies SP5C as obsolete and replaced by .
How to avoid it: If the existing board says , verify that the complete drive configuration accepts the replacement rather than assuming the suffix change is the only consideration.
⚠️ Check the Power Stage Before Installing the Board
Gate-driver failures can be secondary damage. A shorted power device or abnormal gate circuit can destroy a replacement PCB during startup.
How to avoid it: With the drive fully isolated, verify the DC bus is discharged, inspect the power semiconductors, check gate-drive wiring, inspect connectors for heat damage, and identify the original failure mechanism before energization.
Frequently Asked Questions (FAQ)
What is Allen-Bradley 1336-BDB-?
It is a gate-driver PCB for legacy Allen-Bradley 1336 AC drives. The documented application is 1336STE, 460 VAC, 25 HP, Series C and later, with an additional 1336F, 460 VAC, 25 HP, Series A and later application.
What voltage and horsepower is 1336-BDB- rated for?
The key application specification is 460 VAC and 25 HP. The correct drive family and series must also be confirmed; horsepower alone is insufficient for a safe replacement decision.
Can 1336-BDB- be replaced with ?
Rockwell’s spare-parts documentation identifies 1336-BDB- as obsolete and as its replacement.
Still, verify the complete drive configuration before installation, particularly when the original drive is an older Series A/B/C unit.
Can I use 1336-BDB-SP6D instead of ?
Not as a routine substitution. SP6D is specified for 1336STE, 460 VAC, 30 HP, while is for the 25 HP class.
The physical similarity between adjacent gate-driver boards should not be treated as proof of electrical compatibility.
What should I request when buying a refurbished 1336-BDB-?
Request:
- Actual PCB photographs.
- Clear marking.
- Board revision and manufacturing markings.
- Drive application being used for the test.
- Gate-drive functional test results.
- Power-device compatibility verification.
- Connector inspection.
- Evidence of thermal/physical inspection.
- Test report.
- Warranty terms.
A basic continuity or visual test has limited value here. The useful acceptance test is one that verifies the gate-drive circuitry under an appropriate test arrangement.
Is 1 still a current product?
It is a legacy 1336 drive spare part rather than a current-generation drive PCB. Rockwell’s published spare-parts documentation is an older reference, but it clearly establishes the ‘s intended application and its relationship to the obsolete .
For procurement, preserve the complete part number and drive catalog number in the purchase record. That is more reliable than ordering simply by the description “1336 gate driver board.”
