Diodes Incorporated DPLS350Y-13

Overview

DPLS350Y-13 from Diodes Incorporated is a 50V PNP low-saturation power transistor in SOT89 package, designed for high-current switching in automotive and industrial power control circuits. It delivers -3A continuous collector current, -5A peak pulse current, 2W power dissipation, V_CE(sat) < -180mV @ -1A, and R_CE(sat) = 67mΩ @ -2A - enabling efficient load switching in DC-DC converters and motor drivers.

For engineers reviewing the DPLS350Y-13 datasheet, DPLS350Y-13 pinout, DPLS350Y-13 application, or DPLS350Y-13 equivalent, key selection criteria include verified PNP polarity, SOT89 thermal performance with exposed collector pad, AEC-Q101 qualification, low R_CE(sat) at high I_C, and precise V_BE(sat) behavior across temperature.

Technical Context

This device operates as a high-reliability PNP bipolar junction transistor optimized for linear and saturated switching modes. Its -50V V_CEO rating supports robust operation in 24V and 48V industrial bus systems, while its h_FE ≥ 200 at -1A ensures stable base drive efficiency under load.

Thermal design leverages the SOT89's exposed collector pad: R_θJL = 5.7°C/W enables direct heat transfer to PCB copper, and R_θJA drops from 125°C/W (15mm² copper) to 62.5°C/W (50mm² copper), supporting sustained 2W dissipation in thermally managed layouts.

Key Specifications

Pinout & Package

Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal conduction. Dimensions per AP02002: 4.50 × 2.50 × 1.50 mm (L × W × H), weight ≈ 0.052 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZTX951 and MJD2955T4G, DPLS350Y-13 uniquely balances AEC-Q101 reliability, SOT89 compactness, sub-200mV saturation, and 67mΩ on-resistance - making it optimal for space-constrained, thermally demanding automotive and industrial switching where both efficiency and qualification matter.

Availability

DPLS350Y-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and motor driver half-bridges requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance across production batches.

Supply support for DPLS350Y-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 automotive, industrial, and computing markets with ISO/TS 16949 and ISO 14001 certifications.

The DPLS350Y belongs to Diodes' AEC-Q101-qualified power transistor product line, engineered specifically for high-current, thermally efficient switching in harsh-environment automotive and industrial control systems.

FAQ

What is the maximum allowable junction temperature for DPLS350Y-13?

The absolute maximum operating junction temperature is +150°C, with storage temperature range also specified from -55°C to +150°C. Derating begins above +25°C ambient: power dissipation must be reduced linearly to zero at +150°C case temperature when mounted on 50mm² copper, per Figure 3 in DS31149 Rev. 9-2.

Can DPLS350Y-13 be used in parallel configurations?

Parallel operation is not recommended due to inherent h_FE variation (200–450) and negative temperature coefficient of V_CE(sat), which can cause current imbalance. For higher current needs, Diodes recommends using a single higher-rated device such as the DPLS350Y's companion NPN counterpart or a dedicated power module.

Is the exposed collector pad electrically isolated from other pins?

No - the exposed collector pad is electrically connected to Pin 3 (Collector). It must be routed to the same net as the collector terminal and may serve as the primary thermal path to PCB copper; isolation would compromise both electrical function and thermal performance.

Does DPLS350Y-13 require a heatsink in standard SOT89 mounting?

A dedicated heatsink is not required if mounted on ≥50mm² of 1oz copper, where R_θJA = 62.5°C/W allows full 2W dissipation at +25°C ambient. For higher ambient temperatures or smaller copper areas, thermal simulation using the provided transient impedance curves (Figure 3, DS31149 p.3) is essential to verify safe operation.