Schematic Symbol for 5V Relay Modular: 5V relay re-usable,...

Flyback Diode Replacement Inquiry

jharwinbarrozo

@library find replacement for flyback diode @D1

84 days

copilot

worked for 1:07

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Library

Below is a table of candidate flyback diode replacements from the search results that you can consider for replacing D1:

Table

Part Name	Part Uid	MPN	Datasheet URL	Package Code
MP9989GS-Z	45acba38-87e0-46fc-8c9a-91c45c047b4f	MP9989GS-Z	Datasheet	SOIC-8_MP9989_MNP
MP6919GS-P	3ef6c832-f884-40a4-9669-7130dd14d8a6	MP6919GS-P	Datasheet	SOIC-8_MP6919GS-Z_MNP
MP9989GS-P	e2287cda-ba0f-4065-ba7b-52d0a4e87470	MP9989GS-P	Datasheet	(Same as MP9989GS-Z family)
MP6972GS-Z	01f0b1ac-532c-4bcf-9a8e-59fe7223478e	MP6972GS-Z	Datasheet	SOIC-8_MP6972_MNP
MP6919GS	00cd39b3-5ba5-4c06-b144-85d268ab1843	MP6919GS	Datasheet	SOIC-8_MP6919GS-Z_MNP

Each of these candidates is designed for flyback (freewheel) applications with integrated MOSFETs offering low resistance and high reliability. Please review their datasheets and confirm that the electrical parameters (such as voltage rating, current handling, and package type) meet your design requirements before applying a change.

Let me know which one you'd like to use as the replacement for D1 or if you need additional filtering.

84 days

jharwinbarrozo

can i use LBZT52C2V4T1G?

84 days

copilot

worked for 0:48

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Library

The exact part LBZT52C2V4T1G wasn't found in the library; however, there are similar parts available (such as LBZT52C22T1G, LBZT52C27T1G, LBZT52C20T1G, and LBZT52C24T1G).

Before replacing D1, please note the following:

Device Type & Application: The LBZT52 series are Zener diodes rather than conventional flyback (freewheeling) diodes. Zener diodes are typically used for voltage clamping rather than for handling inductive flyback currents.
Electrical Characteristics: For flyback diode applications (such as protecting a relay coil), you typically want a diode with a low forward voltage drop and a fast recovery time. Zener behavior might not provide the needed conduction characteristics for flyback energy dissipation.
Suitability: If your design specifically requires a diode that clamps voltage at a lower level using its zener breakdown, one of the LBZT52 variants might work. However, if the goal is to safely shunt the inductive spike from a relay coil, a standard fast recovery or Schottky diode is usually preferred.

Do you want to review one of the similar LBZT52 parts or would you prefer to consider another type of diode for the flyback protection?

84 days

jharwinbarrozo

what about MMSZ5248B?

84 days

copilot

worked for 0:15

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MMSZ5248B is a Schottky diode that has fast recovery characteristics and a low forward voltage drop, which makes it well-suited for flyback (freewheeling) applications such as protecting relay coils.

Before replacing D1 with this diode, please verify that its voltage and current ratings match the requirements of your relay module design (e.g., peak reverse voltage and forward current ratings). If the electrical parameters align with your design criteria, it can be considered a viable replacement.

Would you like to proceed with suggesting this replacement?

Proceed with replacement

Verify ratings

Confirm parameter match

84 days

INDICATOR LED

VCC

Manufacturer Part Number

SRD-05VDC-SL-C

Manufacturer Part Number

1N4148WS-7

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