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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Bipolar Transistor Arrays

Diodes Incorporated ZXTC6718MCTA

Name: ZXTC6718MCTA
Brand: Diodes Incorporated
SKU: ZXTC6718MCTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTC6718MCTA

Manufacturer:: Diodes Incorporated

Category:: Bipolar Transistor Arrays

Package:: 8-WDFN Exposed Pad

Datasheet:: ZXTC6718MCTA.pdf

Description:: TRANS NPN/PNP 20V W-DFN3020-8

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXTC6718MCTA from Diodes Incorporated is a complementary dual NPN/PNP low-saturation transistor pair in a W-DFN3020-8 Type B package, rated for ±20V V_CEO, delivering 4.5A NPN and −3.5A PNP continuous collector current with V_CE(sat) ≤ 150mV (NPN) and ≤ −220mV (PNP) at 1A, optimized for high-efficiency DC–DC converters and motor control switches.

For engineers reviewing the ZXTC6718MCTA datasheet, ZXTC6718MCTA pinout, ZXTC6718MCTA application, or ZXTC6718MCTA equivalent, this device offers verified AEC-Q101 qualification, low-profile 0.8mm height, 6 mm² footprint, and characterized h_FE up to 6A - critical for compact, thermally constrained power switching designs.

Technical Context

This dual-transistor die integrates matched NPN and PNP silicon on a single substrate, enabling complementary switching without external pairing. Its W-DFN3020-8 Type B package features exposed collector pads on both sides for enhanced thermal conduction, with R_θJA as low as 51.0°C/W under 10 cm² 1 oz copper conditions.

The device supports high-current gain retention (h_FE ≥ 150 at IC = −2A for PNP; ≥ 200 at IC = 2A for NPN) and fast switching (t_on = 170 ns NPN / 40 ns PNP), with pulsed characterization per Note 12 (≤300 µs, ≤2% duty cycle) ensuring reliability in PWM-driven power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	NPN: 20V; PNP: −20V - defines maximum safe blocking voltage across collector-emitter in active switching.
I_C (cont.)	NPN: 4.5A; PNP: −3.5A - continuous current capability at T_A = 25°C with specified PCB copper area.
V_CE(sat) @ 1A	NPN: ≤150 mV; PNP: ≤−220 mV - enables <150 mW conduction loss per transistor at 1A, reducing heat generation.
R_SAT	NPN: 47 mΩ; PNP: 64 mΩ - equivalent on-resistance derived from V_CE(sat)/I_C, used for power loss modeling.
h_FE @ 6A	NPN: ≥180; PNP: ≥30 - confirmed current gain at high drive, supporting stable base drive design up to full rated current.
R_θJA	51.0°C/W (NPN, 10 cm² 1 oz Cu) - enables 2.45W dissipation before junction exceeds 150°C ambient.
Package	W-DFN3020-8 Type B - 3.0 × 2.0 mm body, 0.8 mm height, dual exposed collector pads for thermal management.

Pinout & Package

W-DFN3020-8 Type B is a bottom-terminated, leadless package with two exposed collector pads (C1/C2), designed for solder-reflow assembly and high thermal efficiency. Pin 1 is marked by a dot on top surface; terminals are arranged to support complementary emitter-follower or push-pull configurations.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (NPN C1)	NPN Collector	Primary NPN output node; electrically connected to exposed pad C1 for low-inductance, high-current path.
Pin 2 (NPN E1)	NPN Emitter	Reference terminal for NPN emitter-follower or common-emitter operation; tied to system ground in low-side switch.
Pin 3 (NPN B1)	NPN Base	Control input for NPN; requires current-limited drive (IB ≤ 1A) to achieve full saturation at 4.5A I_C.
Pin 4 (PNP C2)	PNP Collector	Primary PNP output node; electrically connected to exposed pad C2 - independent of C1 but same potential when used in complementary pair.
Pin 5 (PNP E2)	PNP Emitter	Reference terminal for PNP; typically connected to positive rail in high-side switch configuration.
Pin 6 (PNP B2)	PNP Base	Control input for PNP; negative drive required; IB ≤ −350 mA needed for full −3.5A saturation.
Exposed Pad C1	NPN Collector Thermal Pad	Direct thermal path to PCB; must be soldered to large copper pour for R_θJL = 17.1°C/W performance.
Exposed Pad C2	PNP Collector Thermal Pad	Independent thermal pad for PNP side; enables symmetrical thermal layout in dual-switch designs.

Key Features

Feature	Design Value
Complementary NPN/PNP Pair	Single-package integration eliminates matching drift and layout asymmetry between discrete transistors.
AEC-Q101 Qualified	Validated for automotive power modules requiring −40°C to +125°C operation and PPAP compliance.
Low-Profile 0.8 mm Height	Enables use in ultra-thin portable electronics (e.g., smartphone LED backlight drivers) where Z-height is constrained.
6 mm² Footprint	50% smaller than SOT26/TSOP6 - saves board space in multi-rail DC–DC converters and battery management systems.
Halogen- & Antimony-Free "Green"	Meets JEDEC J-STD-020 Level 1 moisture sensitivity and EU RoHS 2011/65/EU exemptions.

Applications

DC–DC Converters

Motor Control

Use Scenario: Synchronous buck converter output stage operating at 500 kHz with 12V input and 3.3V/5A output.

IC Role / Device Role / Timing Role: NPN handles low-side synchronous rectification; PNP provides gate drive or auxiliary bias switching.

Use Value: V_CE(sat) ≤ 150 mV reduces conduction loss by >40% vs. standard 200 mV MOSFETs at 1A, improving efficiency above 92%.

Use Scenario: H-bridge driver for 12V brushed DC motor in automotive seat adjuster module.

IC Role / Device Role / Timing Role: Complementary pair forms half-bridge legs; PNP drives high-side, NPN drives low-side with matched timing.

Use Value: Matched t_on/t_off (170 ns / 40 ns) minimizes shoot-through risk during PWM transitions at 20 kHz.

Charging Circuits

LED Backlighting

Use Scenario: USB-C PD 20W charger with programmable current limit and foldback protection.

IC Role / Device Role / Timing Role: PNP acts as precision current-sense shunt switch; NPN enables fast fault shutdown path.

Use Value: h_FE ≥ 30 at −6A ensures reliable current limiting down to 50 mV sense voltage without external op-amp.

Use Scenario: 10-segment white LED backlight for automotive instrument cluster with dimming via PWM.

IC Role / Device Role / Timing Role: NPN serves as low-side LED string switch; PNP supplies regulated bias to LED driver IC.

Use Value: 0.8 mm profile allows placement beneath display stack-up; R_θJA = 51.0°C/W sustains 2.45W dissipation at 70°C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTD6718MC	Same die, different marking; identical electrical specs and package.	No functional difference; DB2 marking code applies to both.	Select based on distributor stock availability - no design impact.
DMT6009LSDQ	Complementary MOSFET pair (60V, 9.5A/−7.5A); higher V_DS, lower R_DS(on), but larger SO-8 package.	Better for >30V systems; unsuitable for space-constrained 0.8 mm Z-height designs.	Choose only if voltage rating >25V or R_DS(on) <10 mΩ is mandatory; adds 1.2 mm height and 3× footprint.

Compared with ZXTD6718MC (identical function) and DMT6009LSDQ (MOSFET-based), ZXTC6718MCTA uniquely delivers AEC-Q101-compliant bipolar switching in a 0.8 mm, 6 mm² footprint - essential for cost-sensitive, thermally dense automotive and portable power stages where gate drive complexity must be minimized.

Availability

ZXTC6718MCTA is available at Aetrix Electronics and suitable for DC–DC converters, motor control modules, and LED backlighting circuits requiring stable component supply, AEC-Q101 qualification, and low-profile thermal management.

Supply support for ZXTC6718MCTA 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 power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.

The ZXTC6718MCTA belongs to Diodes' low-saturation bipolar transistor product line, engineered specifically for high-current, low-V_CE(sat) switching in space-constrained power conversion and motor drive applications.

FAQ

What is the maximum allowable junction temperature for ZXTC6718MCTA?

The absolute maximum junction temperature is +150°C, as specified in the Thermal Characteristics table. Operation beyond this limit risks permanent degradation of h_FE and increased V_CE(sat). Derating curves show that at 100°C ambient, maximum continuous power drops to ~1.13W (NPN) or ~0.8W (PNP) on 8 cm² 2 oz copper.

Can ZXTC6718MCTA be used in linear regulator applications?

No - it is not characterized or rated for linear operation. The Safe Operating Area (SOA) graphs show V_CE(sat)-limited boundaries only; sustained operation in the active region (e.g., pass transistor) exceeds thermal limits due to lack of SOA derating data beyond pulse conditions. Use only in saturated switching mode.

How is pin 1 identified on the W-DFN3020-8 Type B package?

Pin 1 is marked by a laser-etched dot located at the top-left corner of the package's top surface, adjacent to the NPN collector (C1) terminal. The pinout follows standard DFN orientation: pins numbered counter-clockwise starting from the dot, with exposed pads C1 and C2 centered beneath pins 1 and 4 respectively.

Is ZXTC6718MCTA compatible with lead-free reflow profiles?

Yes - it is qualified for standard IPC/JEDEC J-STD-020 Class 3 peak reflow temperatures up to 260°C. The NiPdAu terminal finish ensures solderability, and moisture sensitivity level is rated at Level 1 (unlimited floor life at ≤30°C/60% RH), eliminating bake requirements prior to assembly.

ZXTC6718MCTA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-WDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: 1 NPN, 1 PNP

Current - Collector (Ic) (Max):: 4.5A, 3.5A

Voltage - Collector Emitter Breakdown (Max):: 20V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 125mA, 4.5A / 300mV @ 350mA, 3.5A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2A, 2V / 150 @ 2A, 2V

Power - Max:: 1.7W

Frequency - Transition:: 140MHz, 180MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: W-DFN3020-8

ZXTC6718MCTA FAQ

1.How can I place an order for ZXTC6718MCTA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTC6718MCTA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ZXTC6718MCTA reliable?

The price and inventory of ZXTC6718MCTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTC6718MCTA is usually 5 days.

3.What payment methods are accepted for ZXTC6718MCTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTC6718MCTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTC6718MCTA?

ZXTC6718MCTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTC6718MCTA order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ZXTC6718MCTA?

For technical support, including ZXTC6718MCTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTC6718MCTA requirements.

6.How does Aetrix verify that ZXTC6718MCTA is sourced from the original manufacturer or authorized distributors?

All ZXTC6718MCTA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZXTC6718MCTA meets industry standards.

7.What is the process for return or replacement of ZXTC6718MCTA?

All ZXTC6718MCTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTC6718MCTA, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ZXTC6718MCTA part is unused and in its original packaging.

Return procedure for ZXTC6718MCTA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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