Allen-Bradley 1336-BDB-SP17D | 1336STEF Drive PCB

Description

Key Technical Specifications

Rockwell’s spare-parts list specifically identifies 1336-BDB-SP17D as “PCB, Gate Driver, 1336STEF, 460V, 40 HP” and lists the obsolete SP17A/C versions as replaced by SP17D.

One secondary technical listing gives broader drive-system data, including 460 VAC input, 40 HP, three-phase operation, and compatibility across several frame configurations. Those details describe the associated drive system rather than independent operating capabilities of the PCB, so they should be treated accordingly.

Application Scenarios & Pain Points

A 40 HP drive is often tied to equipment that cannot simply sit idle while a discontinued PCB is sourced. Pumps, fans, conveyors, compressors, and process machinery can all turn a relatively small board failure into several hours of troubleshooting.

Typical Applications

• 1336STEF Drives: The primary documented application is 460 VAC / 40 HP service.
• Legacy Motor Control: Useful for maintaining installed 1336 equipment where changing the complete drive would mean cabinet modifications, control rewiring, or commissioning work.
• Power-Stage Troubleshooting: Appropriate when the logic/control section appears functional but the drive is not correctly commanding its switching devices.
• Plant Spare Stock: A tested SP17D can serve as a shelf spare for facilities with multiple compatible 1336STEF drives.

Field Case:
A technician may see the keypad and control logic operating normally while the motor remains stationary. Before replacing SP17D, check the DC bus, switching devices, gate-drive supply, and board connectors. A shorted power transistor can make a replacement gate board fail immediately after energization.

1336-BDB-SP17D

Related Products

• 1336-BDB-SP17A — Earlier SP17 gate-driver revision. Rockwell lists it as obsolete and replaced by SP17D. Useful for identifying an original board during legacy repair.
• 1336-BDB-SP17C — Earlier revision of the same SP17 gate-driver family. It is also listed as obsolete and replaced by .
• 1336-BDB-SP18D — Gate-driver PCB for 1336STEF, 460 VAC, 50 HP. It is the next higher power class and should not be substituted solely because the board family is similar.
• 1336-BDB-SP19D — Gate-driver PCB for 1336STEF, 460 VAC, X60 HP. Intended for a higher-power configuration than .
• 1336-BDB-SP28D — Gate-driver PCB for 1336STEF, 460 VAC, 60 HP. Same general function, different drive power application.
• 1336-BDB-SP29D — Gate-driver PCB for 1336STEF, 460 VAC, 75 HP. Useful when comparing the larger 1336STEF gate-driver range.
• 1336-BDB-SP30D — Gate-driver PCB for 1336STEF, 460 VAC, 100 HP. Its higher power application makes it unsuitable as a casual substitute.
• 1336-BDB-SP37D — Gate-driver PCB for 1336STEF, 460 VAC, 150 HP. Same board function but intended for a substantially larger drive.

The Engineer’s Guide: Field Pitfalls to Avoid

⚠️ Do Not Order by “1336-BDB” Alone

The 1336-BDB family contains numerous power-specific boards. is specifically documented for 1336STEF, 460 VAC, 40 HP.

How to avoid it: Record the complete drive catalog number, voltage, horsepower, series, and existing PCB marking before releasing the purchase order.

⚠️ Do Not Treat the PCB’s Rating as a Standalone Drive Rating

A gate-driver board is part of the drive’s switching architecture. Published listings sometimes combine board specifications with system-level specifications.

How to avoid it: Use the host drive nameplate and Rockwell parts documentation as the primary compatibility references. The PCB should be identified as a gate-driver board, not a complete 40 HP VFD.

⚠️ Check the Power Section Before Installing

A damaged IGBT, gate circuit, or DC-bus condition can take out a replacement board.

How to avoid it: Lock out the drive, verify the DC bus is fully discharged, inspect the power devices and gate wiring, check connectors for heat damage, and determine the original failure mechanism before energizing the replacement.

Frequently Asked Questions (FAQ)

What is Allen-Bradley 1336-BDB-?

It is a gate-driver printed circuit board for the Allen-Bradley 1336STEF drive family, specifically documented for 460 VAC, 40 HP applications.

What drive is 1336-BDB- designed for?

The strongest Rockwell documentation identifies it for 1336STEF, 460 VAC, 40 HP service. One kit is specified per drive.

Can replace 1336-BDB-SP17A or SP17C?

Yes. Rockwell’s parts documentation identifies SP17A/C as obsolete and replaced by .

Even so, verify the host drive’s exact catalog number and series before installation, particularly on older equipment.

Is 1336-BDB- a complete 40 HP VFD?

No. It is a gate-driver PCB installed inside the 1336 drive. It does not contain the complete drive power section, control interface, enclosure, or motor terminals.

Can I substitute SP18D for ?

Not as a routine replacement. SP18D is documented for 1336STEF, 460 VAC, 50 HP, while is for 40 HP.

Similar physical construction does not establish electrical compatibility.

What should I request when purchasing a refurbished 1336-BDB-?

Ask for:

1. Actual PCB photographs.
2. Clear marking.
3. Board revision information.
4. Connector and terminal inspection.
5. Evidence of inspection for heat damage and oxidation.
6. Gate-drive functional test results.
7. Host-drive configuration used for testing.
8. Test report.
9. Warranty terms.

A continuity check alone is not enough. The meaningful question is whether the gate-drive circuitry has been tested under an appropriate electrical test arrangement.

Is still a current product?

It is a legacy/discontinued component. Rockwell’s spare-parts documentation identifies as the replacement for the obsolete SP17A/C versions, while current secondary listings also classify as discontinued.

For procurement, retain the complete identification and verify the actual PCB marking before accepting surplus or refurbished stock.