Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Part Number | 1336-BDB-SP30C |
| Product Type | Gate Drive PCB / Spare Parts Kit |
| Drive Family | Bulletin 1336 |
| Compatible Series | 1336 PLUS, PLUS II, FORCE, IMPACT |
| Frame | Frame D |
| Drive Rating | 100 HP |
| Input Voltage Class | 460 VAC |
| Primary Function | Gate-drive interface for power switching devices |
| Board Category | Drive Power Electronics PCB |
| Replacement Reference | 1336-BDB-SP30D |
| Lifecycle | Discontinued / Obsolete |
| Installation | Internal 1336 drive assembly |
| ESD Sensitivity | Yes |
| Condition | New Surplus / Tested Refurbished |
The available technical records consistently identify 1336-BDB-SP30C as a gate-drive PCB associated with 100 HP, 460 VAC, Frame D drives. One source specifically lists compatibility with the 1336 PLUS, PLUS II, FORCE, and IMPACT families.
Application Scenarios & Pain Points
When a legacy 1336 drive faults at the power-switch level, replacing the complete drive is often far more disruptive than repairing the specific gate-drive assembly. The difficult part is identifying whether the failure is actually on the BDB board, in the power devices, control board, DC bus, or associated wiring.
Typical Applications
- 1336 PLUS Drives: Used as the gate-drive PCB in applicable Frame D configurations, particularly where the installed drive is rated around 100 HP at 460 VAC.
- 1336 PLUS II: The same spare-part designation is documented for compatible Frame D applications. Verify the complete drive catalog number before installation.
- 1336 FORCE / IMPACT: Applicable to documented Frame D configurations within these legacy drive families. The board should not be generalized to every horsepower or frame combination.
- Legacy Motor-Control Repair: Useful where the power section remains mechanically sound and replacement of the gate-drive PCB is more practical than replacing the entire drive.
Field Case:
A gate-drive board should not be condemned solely because the drive produces an overcurrent or power-stage fault. First check the DC bus, gate signals, power semiconductor condition, gate resistors, and visible PCB damage. A failed IGBT or SCR can take a replacement BDB board down again if the underlying fault is left in place.
1336-BDB-SP30C
Related Products
- Allen-Bradley 1336-BDB-SP30D — Later replacement designation for the SP30C according to available spare-parts records. Do not treat it as a blind drop-in until the drive’s exact catalog number and hardware requirements are confirmed.
- Allen-Bradley 1336-BDB-SP30B — Earlier/related gate-drive board designation in the same 1336 BDB family. Revision and drive-rating differences must be checked before substitution.
- Allen-Bradley 1336-BDB-SP44C — Another 1336 BDB gate-drive spare designation. It belongs to the same general gate-drive family but has different drive application requirements; it should not be selected simply because the PCB category matches.
- Allen-Bradley 1336-BDB-SP16A — Related 1336 gate-drive spare. Different rating/application designation; verify horsepower, voltage, and frame before considering it.
- Allen-Bradley 1336-BDB-SP20C — Another BDB-series gate-drive PCB. Functional similarity does not establish interchangeability.
- Allen-Bradley 1336-MCB-SP1 — Main control-board hardware for certain 1336 drive configurations. It performs the control function and is not a substitute for the BDB gate-drive PCB.
- Allen-Bradley 1336-MCB-SP2 — Another 1336 main-control-board configuration. Relevant when troubleshooting the control side rather than the gate-drive power stage.
- Allen-Bradley 1336S-MCB-SP1B — Main control PCB for 1336S B-H frame drives. It belongs to a related legacy drive ecosystem but is functionally different from the 1336-BDB-SP30C.
The Engineer’s Guide: Field Pitfalls to Avoid
⚠️ Do Not Confuse the Gate-Drive Board With the Main Control Board
The BDB assembly belongs to the gate-drive/power-switch interface. The MCB controls the drive’s higher-level operating functions.
How to avoid it: When troubleshooting, identify whether the failure is on the control side or power-switch gate-drive side before ordering a PCB.
⚠️ Verify 100 HP / 460 VAC / Frame D
The SP30C designation is not a universal 1336 gate-drive board. Available documentation specifically associates it with 100 HP, 460 VAC, Frame D applications.
How to avoid it: Read the complete drive nameplate. Record voltage, horsepower, frame, series, and catalog number before purchasing.
⚠️ Protect the Board From ESD
The gate-drive circuitry interfaces directly with sensitive power-switch control electronics. Static discharge can damage components without leaving an obvious mark.
How to avoid it: Use a grounded wrist strap, ESD-safe work surface, and static-protective packaging. Never handle the PCB by exposed contacts or component leads.
Frequently Asked Questions (FAQ)
What is Allen-Bradley 1336-BDB-SP30C?
It is a gate-drive PCB spare for specified Allen-Bradley Bulletin 1336 drives. Available records identify the part for 100 HP, 460 VAC, Frame D applications across the 1336 PLUS, PLUS II, FORCE, and IMPACT families.
What does the BDB board actually do?
The gate-drive board sits between low-level drive control signals and the power-switch circuitry. Its job is to generate the appropriate gate-drive signals needed to control the power switching devices.
That makes it fundamentally different from the main control PCB. A problem in this section can prevent the drive from producing usable motor output even when the keypad and control electronics appear normal.
Is 1336-BDB-SP30C suitable for any 1336 drive?
No. The available identification is specific to a particular application: 100 HP, 460 VAC, Frame D.
Do not select it merely because the installed drive carries the “1336” family name.
Has 1336-BDB- been discontinued?
Yes. Available records identify as obsolete, with 1336-BDB-SP30D listed as its replacement designation.
For an old production drive, the replacement designation still needs engineering verification rather than being accepted solely on the basis of a similar suffix.
Can I replace directly with SP30D?
Treat SP30D as a replacement candidate, not an automatic drop-in. Confirm the original drive catalog number, frame, voltage, horsepower, board mounting, connectors, and Rockwell documentation before installation.
This is particularly important when the existing drive has a long service history and may contain earlier hardware revisions.
What should I request when buying a refurbished ?
Ask for:
- Actual board photographs
- Complete marking
- Board revision/date code
- Connector photographs
- Inspection for burned gate resistors or cracked solder joints
- Power-stage interface inspection
- ESD-safe handling confirmation
- Functional test evidence
- Warranty terms
A simple “powers on” test is not meaningful for a standalone gate-drive PCB. The board should ideally be tested within an appropriate 1336 drive test setup.
What is the main risk when replacing this board?
The most serious risk is replacing the gate-drive PCB without correcting the original power-stage fault. If an IGBT, SCR, gate resistor, snubber component, or associated circuit is damaged, a replacement BDB board can be exposed to the same failure condition.
Before installation, inspect the complete power section—not just the PCB being replaced.
