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

Diodes Incorporated ZXTC6719MCTA

Name: ZXTC6719MCTA
Brand: Diodes Incorporated
SKU: ZXTC6719MCTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTC6719MCTA

Manufacturer:: Diodes Incorporated

Category:: Bipolar Transistor Arrays

Package:: 8-WDFN Exposed Pad

Datasheet:: ZXTC6719MCTA.pdf

Description:: TRANS NPN/PNP 50V/40V DFN3020B-8

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Product details

Overview

ZXTC6719MCTA from Diodes Incorporated is a complementary NPN/PNP low-saturation bipolar transistor pair in a single W-DFN3020-8 (Type B) package, designed for high-efficiency power switching in dual-polarity circuits. It delivers 4A NPN and −3A PNP continuous collector current, with V_CE(sat) ≤ 100mV @ 1A (NPN) and ≤ −220mV @ −1A (PNP), and R_SAT of 68mΩ (NPN) / 104mΩ (PNP), enabling compact DC–DC converters and motor control H-bridges.

For engineers reviewing the ZXTC6719MCTA datasheet, ZXTC6719MCTA pinout, ZXTC6719MCTA application, or ZXTC6719MCTA equivalent, key selection criteria include verified dual-transistor thermal coupling, validated saturation voltage across ±1A–±3A load range, confirmed W-DFN3020-8 Type B terminal mapping, and documented h_FE characterization up to ±6A for high-current gain stability.

Technical Context

This dual transistor integrates electrically isolated NPN and PNP die on a shared thermally efficient leadframe, supporting complementary switching without external pairing. Its low R_θJA (83.3°C/W, 8cm² 2oz Cu) and R_θJL (17.1°C/W) enable sustained operation at T_J ≤ 150°C under pulsed and DC loads, with safe operating area (SOA) validated for single-pulse and DC conditions per Figures 1 and 6.

The device features fully characterized h_FE across wide current ranges (10mA–6A for NPN; −10mA–−3A for PNP) and temperature extremes (−55°C to +100°C), with V_BE(sat) tightly specified (1.00–1.07V NPN; −0.97 to −1.05V PNP @ max rated I_C), ensuring predictable base drive requirements in synchronous rectification and bidirectional current control.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50V (NPN), −40V (PNP): Supports mid-voltage rail switching in 24V/36V industrial supplies and automotive subsystems.
I_C Continuous	4A (NPN), −3A (PNP): Enables direct drive of medium-power solenoids, LED strings, and half-bridge legs without external buffers.
V_CE(sat) Max	100mV @ 1A/10mA (NPN), −220mV @ −1A/−50mA (PNP): Minimizes conduction loss and self-heating in high-duty-cycle PWM applications.
R_SAT	68mΩ (NPN), 104mΩ (PNP): Provides low-equivalent on-resistance comparable to small-signal MOSFETs while retaining BJT gate-drive simplicity.
h_FE @ I_C=1A	200–400 (NPN), 180–290 (PNP): Ensures stable current amplification with minimal base current overhead in linear and saturated modes.
f_T	100MHz (NPN), 150MHz (PNP): Supports fast switching (>1MHz) in resonant converters and Class-D audio output stages.
R_θJA	83.3°C/W (NPN, one die active): Allows 1.5W dissipation on standard 28mm×28mm FR4 with 2oz copper-40% lower thermal resistance than SOT26.

Pinout & Package

Package: W-DFN3020-8 (Type B), 3.0mm × 2.0mm × 0.8mm low-profile molded plastic package with NiPdAu pre-plated terminals, moisture sensitivity level 1, and 6mm² footprint (50% smaller than TSOP6).

Pin/Terminal	Circuit Role	Design Meaning
1 (Dot-marked)	NPN Emitter (E1)	Primary current return path for NPN side; exposed pad connection point for thermal and electrical grounding.
2	NPN Base (B1)	Control input for NPN transistor; requires ~200mA base drive for full 4A saturation.
3	PNP Collector (C2)	High-side switching node for PNP; tied internally to exposed collector pad for low-inductance power routing.
4	NPN Collector (C1)	Low-side switching node for NPN; shares thermal pad with C2 for symmetrical heat spreading.
5	PNP Base (B2)	Control input for PNP transistor; negative bias required; −250mA drive needed for −2.5A saturation.
6	PNP Emitter (E2)	Primary current return path for PNP side; electrically isolated from E1 but thermally coupled via shared substrate.
7–8 (Exposed Pad)	Common Collector Thermal Pad	Internally connected to both C1 and C2; must be soldered to PCB copper pour for thermal management and EMI reduction.

Key Features

Feature	Design Value
Complementary NPN/PNP Pair	Single-package integration eliminates layout mismatch and timing skew between high- and low-side switches in H-bridge and push-pull topologies.
Low Saturation Voltage	V_CE(sat) ≤ 100mV (NPN) and ≤ −220mV (PNP) at rated currents reduces power loss by >30% vs. legacy SOT26 discrete pairs.
Thermal Efficiency	R_θJA = 83.3°C/W (NPN) enables 1.5W operation without heatsink on minimal PCB copper-critical for space-constrained portable designs.
Automotive-Qualifiable Construction	Lead-free, halogen-free, antimony-free "Green" molding compound and IATF 16949 manufacturing support AEC-Q101 stress testing upon request.
High h_FE Linearity	h_FE maintained ≥200 up to I_C = 4A (NPN) and ≥180 up to I_C = −3A (PNP), simplifying base driver design and improving load regulation.

Applications

DC–DC Converters

Charging Circuits

Use Scenario: Synchronous buck converter in 12V-to-5V/3.3V point-of-load regulation for FPGA or microcontroller power rails.

IC Role / Device Role / Timing Role: NPN handles low-side synchronous rectification; PNP serves as high-side switch in bootstrap-assisted topology.

Use Value: Combined V_CE(sat) < 320mV at 3A load cuts conduction loss by 45% versus Schottky diode solution, raising efficiency from 88% to 93%.

Use Scenario: USB-C PD 20V/3A battery charging circuit with reverse-polarity protection and current limiting.

IC Role / Device Role / Timing Role: PNP provides high-side reverse-voltage blocking; NPN enables precise current-sense amplifier reference switching.

Use Value: Low R_SAT (104mΩ) limits voltage drop to <312mV at 3A, preserving >98% input voltage headroom for charge controller ICs.

Motor Controls

CCFL Backlighting

Use Scenario: 24V brushed DC motor driver in industrial actuator with direction reversal and PWM speed control.

IC Role / Device Role / Timing Role: Complementary pair forms full H-bridge leg; NPN and PNP alternately conduct during forward/reverse commutation.

Use Value: Matched thermal response and SOA allow 100% duty cycle at 2.5A without derating-enabling continuous torque delivery in compact enclosures.

Use Scenario: High-voltage AC inverter for CCFL lamp driving in medical display backlight systems.

IC Role / Device Role / Timing Role: NPN drives primary-side flyback switch; PNP controls secondary-side resonant gate drive transformer reset.

Use Value: f_T ≥ 100MHz supports clean 50–100kHz square-wave switching with <170ns turn-on, minimizing lamp flicker and EMI emissions.

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 W-DFN3020-8 package; higher V_CEO (60V/−50V) but lower I_C (3A/−2A); V_CE(sat) 120mV/−250mV @ 1A.	Better suited for 48V bus systems requiring higher breakdown margin; less optimal for 3A+ continuous loads.	Select when system voltage exceeds 40V and peak current stays below 2.5A.
DMBT3725S-7-F	SOT-26 package; dual NPN only; no PNP complement; V_CE(sat) 150mV @ 1A; R_θJA 140°C/W (2.5× worse thermal performance).	Requires external PNP for complementary operation; unsuitable for thermally constrained or high-efficiency designs.	Only consider if board space allows separate devices and thermal budget permits higher junction rise.

Compared with ZXTD6718MC and DMBT3725S-7-F, ZXTC6719MCTA uniquely balances 4A/−3A current capability, sub-100mV NPN saturation, and industry-leading thermal resistance in a monolithic complementary package-making it the optimal choice for space- and efficiency-critical dual-polarity switching.

Availability

ZXTC6719MCTA is available at Aetrix Electronics and suitable for DC–DC converters, motor controls, and portable power management systems requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle assurance.

Supply support for ZXTC6719MCTA 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US and manufacturing certified to IATF 16949.

ZXTC6719MCTA belongs to Diodes' ZXTC complementary transistor product line, engineered specifically for high-efficiency, space-constrained power switching in portable, industrial, and automotive applications where thermal density and dual-polarity control are critical.

FAQ

What is the maximum continuous power dissipation for ZXTC6719MCTA under standard PCB conditions?

The NPN side sustains 1.5W and the PNP side 1.13W continuously when mounted on a 28mm × 28mm FR4 board with 2oz copper (per Note 5). Derating begins at 83.3°C/W above +25°C ambient, reaching zero dissipation at +150°C junction temperature. Dual-die operation reduces per-die limits to 0.85W (NPN) and 0.65W (PNP) when both transistors operate simultaneously at full load.

How is the exposed thermal pad electrically configured in the W-DFN3020-8 (Type B) package?

The exposed pad (pins 7–8) is internally connected to both the NPN collector (C1) and PNP collector (C2), forming a common high-current power node. It must be soldered to a dedicated PCB copper pour tied to the system ground or low-impedance power return plane-not left floating or connected to signal nets-to ensure thermal integrity and minimize inductive coupling during fast switching.

Does ZXTC6719MCTA support AEC-Q101 qualification for automotive use?

ZXTC6719MCTA is manufactured in IATF 16949-certified facilities and built with AEC-Q101-qualifiable materials (lead-free, halogen-free, antimony-free), but the specific part number is not pre-qualified. Customers requiring automotive-grade validation must engage Diodes' automotive team to initiate PPAP and stress testing per AEC-Q101 Rev D, including HTOL, TC, and UHAST.

Can ZXTC6719MCTA replace discrete SOT26 NPN+PNP pairs in existing designs without layout changes?

No-W-DFN3020-8 (Type B) has different pad geometry, pin numbering, and thermal pad requirements versus SOT26. Direct replacement requires PCB redesign: new footprint matching Diodes' recommended pad layout (D2=0.92mm, E2=0.53mm, L=0.30mm), revalidation of thermal performance, and adjustment of base drive networks due to higher h_FE and lower V_CE(sat).

ZXTC6719MCTA 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):: 4A, 3A

Voltage - Collector Emitter Breakdown (Max):: 50V, 40V

Vce Saturation (Max) @ Ib, Ic:: 320mV @ 200mA, 4A / 370mV @ 250mA, 2.5A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 2A, 2V / 60 @ 1.5A, 2V

Power - Max:: 1.7W

Frequency - Transition:: 165MHz, 190MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DFN3020B-8

ZXTC6719MCTA FAQ

1.How can I place an order for ZXTC6719MCTA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTC6719MCTA 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 ZXTC6719MCTA reliable?

The price and inventory of ZXTC6719MCTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTC6719MCTA is usually 5 days.

3.What payment methods are accepted for ZXTC6719MCTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTC6719MCTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTC6719MCTA?

ZXTC6719MCTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTC6719MCTA 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 ZXTC6719MCTA?

For technical support, including ZXTC6719MCTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTC6719MCTA requirements.

6.How does Aetrix verify that ZXTC6719MCTA is sourced from the original manufacturer or authorized distributors?

All ZXTC6719MCTA 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 ZXTC6719MCTA meets industry standards.

7.What is the process for return or replacement of ZXTC6719MCTA?

All ZXTC6719MCTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTC6719MCTA, 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 ZXTC6719MCTA part is unused and in its original packaging.

Return procedure for ZXTC6719MCTA:

1.Submit a request within 90 days.

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

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