Diodes Incorporated DZT5401-13

Overview

DZT5401-13 from Diodes Incorporated is a 150V PNP small-signal transistor in SOT223 package, rated for -600mA collector current and -150V V_CEO, optimized for medium-power switching and linear amplification in industrial power supplies and analog signal conditioning circuits.

For engineers reviewing the DZT5401-13 datasheet, DZT5401-13 pinout, DZT5401-13 application, or DZT5401-13 equivalent, key selection criteria include high-voltage PNP switching capability, thermal performance on FR-4 PCBs, complementary pairing with DZT5551, and RoHS-compliant green packaging for automotive-qualified designs.

Technical Context

This PNP bipolar junction transistor operates with verified breakdown ratings of -160V V_CBO, -150V V_CEO, and -6V V_EBO, supporting stable operation across -65°C to +150°C junction temperature range. Its f_T of 100–300 MHz and h_FE of 50–240 (at IC = -1mA to -50mA) enable use in both DC switching and RF-amplifier front-ends up to VHF.

Thermal design is defined by R_θJA = 125°C/W (MRP layout) or 62.5°C/W (enhanced 50mm × 50mm copper), with 1W power dissipation at T_A = +25°C. Saturation behavior is characterized at -0.2V V_CE(sat) (IC = -10mA/IB = -1mA) and -0.5V (IC = -50mA/IB = -5mA), confirming low-loss switching performance.

Key Specifications

Pinout & Package

Package: SOT223 - Surface-mount plastic package with integrated heat sink tab (pin 3), rated for 1W dissipation under defined PCB copper conditions. Moisture sensitivity level 1 per J-STD-020; matte tin-plated leads meet MIL-STD-202 solderability requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power switching applications.

Compared with DZT5401-13, MJD44H11T4G trades board space for higher voltage safety margin, while ZTX653 sacrifices voltage rating for compactness and RF linearity-making DZT5401-13 the balanced choice for 100–120 V industrial switching with thermal and compliance requirements.

Availability

DZT5401-13 is available at Aetrix Electronics and suitable for industrial power supplies, PLC output modules, and sensor signal conditioning requiring stable component supply, long-term lifecycle support, and automotive-qualified manufacturing traceability.

Supply support for DZT5401-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, automotive, and computing markets with ISO/TS 16949-certified facilities.

DZT5401-13 belongs to Diodes' high-voltage PNP transistor product line, engineered for robust medium-power switching and amplification in harsh-environment applications where voltage margin, thermal stability, and green compliance are critical.

FAQ

What is the maximum continuous collector current for DZT5401-13 at 70°C ambient?

At T_A = +70°C, derating begins at 125°C/W: maximum allowable power drops to 0.64 W, limiting continuous I_C to approximately -400 mA assuming V_CE(sat) ≈ -0.3 V. This is confirmed by Figure 4 in DS31218 Rev. 4-2, which shows V_CE(sat) rise above 400 mA at elevated temperatures.

Is DZT5401-13 qualified to AEC-Q101 for automotive use?

DZT5401-13 is not pre-qualified to AEC-Q101 in its standard form; however, Diodes offers automotive-grade variants (e.g., DZT5401Q-13) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. Standard DZT5401-13 may be used in non-safety-critical automotive subsystems pending customer qualification.

How does the SOT223 thermal pad affect PCB layout requirements?

The SOT223 collector/tab (pin 3) must be soldered to ≥250 mm² of 1 oz copper on inner or outer layer to achieve the 62.5°C/W R_θJA rating. Thermal vias (≥4×0.3 mm) beneath the tab are recommended to transfer heat to internal planes, per Diodes' suggested pad layout in DS31218 Figure 6.

Can DZT5401-13 replace DZT5551 in a circuit?

No-DZT5401-13 is PNP while DZT5551 is NPN; they are complementary, not interchangeable. Swapping them would invert logic polarity and likely cause circuit failure. They are designed for paired use in push-pull stages, not substitution. Pinouts also differ: DZT5551 has emitter on pin 1, base on pin 2, collector/tab on pin 3-same physical layout but opposite polarity.