Diodes Incorporated DXTN26070CY-13

Overview

DXTN26070CY-13 from Diodes Incorporated is an NPN power switching transistor in SOT89 package, rated for 70 V V_CEO, 2 A continuous collector current, and 300 mV V_CE(sat) at 1 A, optimized for DC-DC converter primary-side switching and LED driver high-side control in industrial power supplies.

For engineers reviewing the DXTN26070CY-13 datasheet, DXTN26070CY-13 pinout, DXTN26070CY-13 application, or DXTN26070CY-13 equivalent, key selection criteria include verified thermal resistance (R_θJL = 22 °C/W), pulsed I_CM capability (4 A), and lead-free, halogen-free "Green" compliance per JEDEC J-STD-020 Level 1 moisture sensitivity.

Technical Context

This device operates as a medium-voltage, medium-current bipolar junction transistor with h_FE ranging from 120 to 500 across IC = 1 mA–100 mA, enabling stable current amplification in linear and saturated switching modes. Its low V_CE(sat) (150–300 mV) and fast turn-on time (63 ns) support efficient on-state conduction and reduced switching losses in PWM-driven loads.

The SOT89 package features an exposed collector pad thermally coupled to PCB copper area, delivering R_θJA values from 178 °C/W (MRP layout) down to 60 °C/W (50 mm × 50 mm 1 oz copper), making thermal performance highly design-dependent and requiring validated pad layout per AP02001.

Key Specifications

Pinout & Package

Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal dissipation; dimensions per AP02002 (D = 4.50 mm, E = 2.50 mm, H = 4.10 mm); JEDEC-compliant moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZTX653 and MJD127, DXTN26070CY-13 delivers optimal balance of 70 V rating, 2 A current, and SOT89 thermal performance-enabling compact, self-cooled designs where board space and assembly height are constrained but 60 V+ operation is required.

Availability

DXTN26070CY-13 is available at Aetrix Electronics and suitable for industrial DC-DC converters, LED constant-current drivers, and automotive body control modules requiring stable component supply and long-term production continuity.

Supply support for DXTN26070CY-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, computing, and consumer markets since 1959.

The DXTN26070CY belongs to Diodes' high-voltage NPN transistor product line, engineered for robust switching performance in power conversion and load-driving applications where thermal efficiency and regulatory compliance are critical.

FAQ

What is the maximum allowable PCB copper area for thermal derating of DXTN26070CY-13?

The datasheet specifies four thermal test conditions: minimum recommended pad (MRP), 15 mm × 15 mm, 25 mm × 25 mm, and 50 mm × 50 mm 1 oz copper areas. The largest tested area is 50 mm × 50 mm, yielding R_θJA = 60 °C/W and P_D = 2.0 W. Larger copper areas may improve thermal performance but are not characterized in DS37664 Rev.1–2.

Can DXTN26070CY-13 be used in linear regulator applications?

Yes-it is rated for continuous operation in the active region with h_FE ≥120 at I_C = 100 mA and V_CE = 2 V. However, power dissipation must remain within derated limits: at T_A = 70°C, max P_D drops to ~0.8 W on MRP layout, limiting linear use to ≤400 mA at 2 V drop.

Is the exposed collector pad electrically isolated from other pins?

No-the exposed pad is internally connected to the collector terminal (Pin 3). It must be routed to the same net as Pin 3 and should not be grounded or tied to any other potential. This connection is essential for both electrical function and thermal performance.

Does DXTN26070CY-13 meet AEC-Q101 for automotive use?

No-this part is not AEC-Q101 qualified. While it operates across –55°C to +150°C and has 4 kV HBM ESD rating, Diodes Incorporated does not list it in their AEC-Q101 stress-tested portfolio. For automotive applications, consult Diodes' AEC-Q101-certified NPN transistors such as the DXT12070.