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ROHM Semiconductor BD49E45G-MTR — Discrete Semiconductors
ROHM Semiconductor

ROHM BD49E45G-MTR Voltage Detector, 4.5V Threshold, AEC-Q100

MPNBD49E45G-MTR
End of Life

ROHM BD49E45G-MTR, Automotive AEC-Q100 Voltage Detector, 1 Channel, Active Low, Push-Pull Output, 4.5V Threshold, -40°C to 105°C, SC-74A SOT-753 5-SSOP.

$0.73Ref. price · indicative, final on quote
BD49E45G-MTR datasheet
PackagingSC-74A, SOT-753
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BD49E45G-MTR Technical Specifications
ParameterValue
TypeVoltage Detector
SeriesAutomotive, AEC-Q100, BD49Exxx-M
Mounting typeSurface Mount
Voltage - threshold4.5V
Number of voltages monitored1
Operating temperature-40°C ~ 105°C (TA)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTape & Reel (TR); Cut Tape (CT)
CaseSC-74A, SOT-753

Product details

4.5V threshold — which rail it monitors

The BD49E45G-MTR is a single-channel voltage detector from ROHM's BD49Exxx-M series, qualified to AEC-Q100 for automotive use. Its 4.5V threshold is set for monitoring a nominal 5V supply rail, asserting a reset when the rail drops below that level.

Active-low push-pull — no external pull-up

The reset output is active-low push-pull (totem pole), meaning it drives both high and low without requiring an external pull-up resistor. This simplifies the BOM and saves a resistor slot on dense automotive PCBs.

Temperature grade and deployment

The AEC-Q100 qualification adds the stress-tested reliability required for production automotive modules.

Package and footprint

Supplied in a 5-pin SC-74A (SOT-753) surface-mount package, also designated as 5-SSOP. The small footprint fits space-constrained ECU layouts. Available in Tape & Reel for automated assembly.

Frequently asked questions

Is BD49E45G-MTR suitable for automotive applications?

Yes.

Does BD49E45G-MTR have a push-pull or open-drain output?

Push-pull (totem pole) output — it drives both high and low without an external pull-up resistor.

What is the equivalent part for BD49E45G-MTR?

The closest functional peer is BD4929G-TR from the same BD49xxx family, but its threshold voltage differs — BD4929G-TR monitors a different rail. Verify the trip point before substituting.