PDTC123JU

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PDTC123JU

PDTC123J SERIES - NPN RESISTOR-E

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  • Mfr. Parte #PDTC123JU
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Descripción general

Description

PDTC123JU is a digital transistor (NPN) with an integrated base-bias resistor. It lets you drive a load directly from a logic output without an external base resistor. When the input is high, the transistor turns on and sinks current through the load; when the input is low, it turns off. The “JU” suffix usually denotes a RoHS-compliant package/version (often SOT-23) and specifies a particular base-resistor value variant. Typical uses include LED drivers, small relays, and microcontroller interfacing. Exact electrical ratings (max Vce, Ic, base resistor value, switching speed) vary by variant, so consult the manufacturer’s datasheet for the PDTC123JU to get the precise numbers for your design. If you share the exact datasheet or vendor, I can summarize the full specifications.

Features

PDTC123JU is a digital transistor (NPN) with built-in bias resistors. Key features:
- Built-in base resistor and base-emitter pull-down for easy microcontroller interfacing
- No external base resistor needed
- TTL/CMOS compatible input, low drive current required
- Suitable for switching moderate loads directly (typical Ic in the tens of mA range; check exact variant)
- Low Vce(sat) when on; fast switching
- Wide Vceo rating (around 60 V common for this family)
- Packaged in a small surface-mount package (SOT-23) with Pb-free option
Applications include LED indicators, signal switching, and interfacing microcontrollers to simple loads. Note: exact Ic, Vceo, and package details can vary by manufacturer; consult the specific datasheet for PDTC123JU.

Package

PDTC123JU is supplied in a SOT-23 (3-pin) surface-mount package.

Pinout

PDTC123JU is a 3‑pin device (SOT‑23). Pins: 1 = Base, 2 = Collector, 3 = Emitter. Function: an NPN "digital" transistor (bipolar transistor with built‑in base resistor and usually a base‑emitter pulldown) used as a compact low‑part‑count switching/amplifying transistor.

Manufacturer

Manufacturer: Diodes Incorporated (Diodes, Inc.).
What kind of company: Diodes Incorporated is a global semiconductor manufacturer and designer specializing in discrete components and analog/logic ICs — e.g., diodes, transistors (including digital transistors like the PDTC series), MOSFETs, power-management and interface products.

Application

PDTC123JU is an NPN digital transistor with a built-in base resistor. Applications: direct MCU drive of low-current loads; LEDs/indicator drives; switching small relay coils or solenoids; interfacing TTL/CMOS logic to higher-current devices; driving optocouplers; general-purpose switching in consumer electronics and automotive. Benefits: fewer external components, simpler drive, and controlled base current for reliable operation.

Equivalent

I can’t reliably map PDTC123JU without the manufacturer/datasheet. If it’s a PDTC‑series NPN digital transistor (SOT‑23 with built‑in base resistor), common equivalents are: DTC123/PDTC123 (same family), DTC114/DTC114E, or a 2N3904 plus the proper base resistor. Please provide the PDTC123JU datasheet or manufacturer for an exact drop‑in equivalent.

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