Diodes Incorporated ZXTS1000E6TC

Overview

ZXTS1000E6TC from Diodes Incorporated (formerly Zetex) is a monolithic PNP bipolar transistor and Schottky barrier diode in a single SOT23-6 package, rated for V_CEO = −12 V, I_C = −1.25 A (transistor), and V_R = 40 V, I_F = 0.5 A (diode), optimized for low-saturation switching in DC–DC converters and mobile interface protection.

For engineers reviewing the ZXTS1000E6TC datasheet, ZXTS1000E6TC pinout, ZXTS1000E6TC application, or ZXTS1000E6TC equivalent, key selection criteria include verified V_CE(sat) ≤ −240 mV at I_C = −1.25 A / I_B = −100 mA, h_FE ≥ 300 at I_C = −10 mA, and Schottky V_F ≤ 640 mV at I_F = 1 A - all confirmed under pulsed test conditions per Issue 1 (Nov 2000) datasheet.

Technical Context

This dual-die device integrates a high-gain PNP transistor with a fast-recovery Schottky diode sharing thermal and layout advantages of a compact 6-pin SOT23 package. The transistor supports I_C up to −1.25 A with V_CE(sat) as low as −185 mV (I_C = −1 A, I_B = −50 mA) and f_T = 220 MHz, while the diode delivers t_rr = 10 ns and C_D = 20 pF at V_R = 30 V.

Thermal resistance is specified as R_θJA = 113 °C/W when both dies are active on a 25 mm × 25 mm FR4 PCB with 1 oz copper, enabling stable operation up to T_j = 125 °C. Absolute maximum ratings are strictly segregated: transistor V_CEO = −12 V, diode V_R = 40 V, with no shared voltage derating between elements.

Key Specifications

Pinout & Package

Package: SOT23-6 (6-lead surface-mount plastic package per JEDEC TO-236AB); dimensions: 2.80–3.00 mm × 2.60–3.00 mm × 0.90–1.45 mm height; marking "1000" on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP + Schottky integrated switching applications.

Compared with ZXTS1000E6TA, the E6TC offers 3.3× higher reel quantity (10,000 vs. 3,000) with identical performance; versus DMBT3725A, it trades higher voltage/current headroom for guaranteed pin compatibility and proven 12 V DC–DC fit in space-constrained mobile designs.

Availability

ZXTS1000E6TC is available at Aetrix Electronics and suitable for mobile telecomms, PCMCIA/SCSI interface protection, and DC–DC conversion applications requiring stable component supply, long-lifecycle support, and traceable sourcing from original manufacturer stock.

Supply support for ZXTS1000E6TC 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 acquired Zetex plc in 2008 and maintains legacy Zetex product lines including high-performance discrete transistors and integrated solutions for power management and signal integrity.

The ZXTS series was developed specifically for space-constrained, high-efficiency DC–DC conversion and interface protection in portable electronics, emphasizing low V_CE(sat), fast switching, and monolithic integration to replace multi-component solutions.

FAQ

What is the maximum continuous power dissipation for ZXTS1000E6TC with both dies active?

The datasheet specifies 0.885 W maximum power dissipation when both the PNP transistor and Schottky diode are simultaneously conducting, measured on a 25 mm × 25 mm FR4 PCB with 1 oz copper in still air. This value corresponds to R_θJA = 113 °C/W and assumes T_amb = 25 °C; derating is required above that ambient temperature per the thermal resistance curve.

Is the Schottky diode electrically isolated from the transistor terminals?

No - the Schottky diode cathode is internally connected to the transistor collector (pin 3), and the anode is on pin 4. This configuration enables automatic clamping of inductive transients at the collector node without external wiring, but prevents independent use of the diode in non-clamp topologies such as standalone freewheeling.

Can ZXTS1000E6TC operate reliably at −40 °C ambient?

Yes - the device is qualified for operation from −55 °C to +150 °C storage and −40 °C to +125 °C junction temperature. Electrical characteristics including h_FE, V_CE(sat), and V_F are characterized down to −55 °C in the datasheet, confirming stable gain and low saturation voltage across the full industrial temperature range.

Does the "1000" marking on the package correspond to the full part number?

Yes - the top-side marking "1000" is the standardized device code for ZXTS1000E6, as confirmed in the package drawing and ordering information table. It is not a date code or lot identifier; all ZXTS1000E6 variants (E6TA, E6TC) share this marking regardless of reel size or packaging format.