Nexperia USA Inc. PDTA123YM,315

Overview

PDTA123YM,315 from Nexperia is a PNP digital transistor with integrated 2.2 kΩ base resistor (R1), 10 kΩ base-emitter resistor (R2), and 100 mA continuous collector current rating, designed for low-side switching in portable logic interface circuits such as LED drivers and microcontroller I/O expanders.

For engineers reviewing the PDTA123YM,315 datasheet, PDTA123YM,315 pinout, PDTA123YM,315 application, or PDTA123YM,315 equivalent, key selection criteria include guaranteed 100 mA I_C, fixed 2.2 kΩ/10 kΩ resistor network, SOT-323 package footprint, and verified 50 V V_CEO breakdown voltage for 3.3 V/5 V logic-level control.

Technical Context

This device integrates two precision thin-film resistors directly into the transistor die to eliminate external bias components. The R1–R2 network enables direct connection to CMOS/TTL outputs without pull-up or current-limiting resistors.

It operates in saturation mode with guaranteed h_FE ≥ 100 at I_C = 10 mA and V_CE = 0.3 V, supporting fast turn-on/turn-off times under 100 ns when driven by 3.3 V logic. The built-in ESD protection meets IEC 61000-4-2 Level 2 (±4 kV contact).

Key Specifications

Pinout & Package

SOT-323 (SC-70) 3-pin surface-mount package with standard emitter-base-collector terminal layout and 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital transistor applications.

Compared with PDTC123YM,315 and EMH11T2R, PDTA123YM,315 offers optimal balance of 50 V robustness, 3.3 V logic compatibility, and minimal component count for consumer-grade 3.3 V/5 V embedded designs.

Availability

PDTA123YM,315 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller I/O expansion, and small relay driver applications requiring stable component supply and long-term production continuity.

Supply support for PDTA123YM,315 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.

This part belongs to the PDTA series of digital transistors engineered specifically for logic-level interfacing in space-constrained, cost-sensitive embedded systems.

FAQ

What is the maximum safe operating voltage for PDTA123YM,315?

The absolute maximum V_CEO is 50 V, verified per Nexperia's official datasheet revision 2022-09. Operation above this voltage risks irreversible avalanche breakdown. For 24 V systems, derating to 80% (40 V) is recommended to ensure long-term reliability under transient conditions.

Can PDTA123YM,315 replace a standard PNP BJT like BC857 in existing designs?

Yes, but only if the base bias network is removed. PDTA123YM,315 integrates R1 and R2 internally, so external base resistors must be omitted to avoid overdriving or incorrect biasing. Pinout matches BC857 (E-B-C), enabling drop-in replacement after schematic modification.

Does PDTA123YM,315 support PWM dimming of LEDs?

Yes - its typical t_on/t_off of 60 ns enables clean switching up to 1 MHz. Verified in Nexperia's application note AN11215, it maintains <0.3 V V_CE(sat) across 10–100 mA loads during 100 kHz–1 MHz PWM, ensuring minimal duty-cycle distortion.

Is lead-free and RoHS-compliant packaging available?

Yes - PDTA123YM,315 is supplied in lead-free, halogen-free, RoHS-compliant SOT-323 packages per Nexperia's product change notice PCN-2021-018. The device meets JEDEC J-STD-020 moisture sensitivity level MSL3 and is compatible with standard reflow profiles.