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BU4942F-TR The ROHM Semiconductor BU4942F-TR is a voltage detector IC designed for power-on reset functions. It features a 4.2V operating voltage and a 1-channel monitoring capability.
Mfr Part #:

BU4942F-TR

Available from 1 distributors
Mfr Name: ROHM Semiconductor
ROHM Semiconductor
The ROHM Semiconductor BU4942F-TR is a voltage detector IC designed for power-on reset functions. It features a 4.2V operating voltage and a 1-channel monitoring capability.
✓ Total Stock: 25 pcs
$ Price Range: $0.75

BU4942F-TR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
25 pcs
On Request
25 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BU4942F-TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Number of Voltages Monitored
Operating Temperature
Output
Reset
Supplier Device Package
Type
Voltage
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BU4942F-TR Description

Short technical summary and product information.

The BU4942F-TR from ROHM Semiconductor is a voltage detector IC belonging to the supervisor category. This component is designed for simple reset and power-on reset applications, monitoring a single voltage level of 4.2V.

 

Key electrical characteristics include an active high/active low reset output with a push-pull, totem pole configuration. The device operates within a temperature range of -40°C to 125°C (TA).

 

Packaged in a 4-SOP (SC-82) format, the BU4942F-TR is designed for surface mount installation. Its primary function is to ensure system stability by detecting voltage drops and initiating a reset signal when necessary.

 

This voltage detector is suitable for applications requiring reliable power supply monitoring and reset generation, contributing to the overall robustness of electronic systems.

BU4942F-TR Quick Information

Product Type: Voltage Detector
Canonical Name: ROHM Semiconductor BU4942F-TR Voltage Detector
Subcategory: Supervisors

BU4942F-TR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BU4942F-TR Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

BU4942F-TR Features

  • Simple reset/power-on reset supervisor IC
  • Monitors single 4.2V voltage channel
  • Active high and active low reset output
  • Push-pull totem pole output type
  • Operates from -40°C to 125°C

BU4942F-TR Applications

  • Power supply monitoring for microcontrollers
  • Reset control in battery-powered devices
  • Voltage monitoring in industrial control systems
  • Supervisor circuit for automotive electronics

BU4942F-TR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage for the BU4942F-TR?

The operating voltage for the BU4942F-TR is 4.2V.

How many voltage channels does the BU4942F-TR monitor?

The BU4942F-TR monitors one voltage channel.

What type of reset does the BU4942F-TR provide?

The BU4942F-TR provides a Simple Reset/Power-On Reset function.

What are the reset output conditions for the BU4942F-TR?

The reset output for the BU4942F-TR is Active High/Active Low.

What is the operating temperature range for the BU4942F-TR?

The operating temperature range for the BU4942F-TR is -40°C to 125°C (TA).

What package is the BU4942F-TR supplied in?

The BU4942F-TR is supplied in a 4-SOP package, specifically the SC-82.

How is the BU4942F-TR mounted?

The BU4942F-TR is designed for surface mount installation.

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