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Diodes Incorporated ZXTD720MCTA
- Part No.:
- ZXTD720MCTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ZXTD720MCTA.pdf
- Description:
- TRANS 2PNP 40V 3A DFN3020B-8
- Quantity:
- Payment:
- Shipping:
Inventory:8,640
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Product details
Overview
ZXTD720MCTA from Diodes Incorporated is a dual PNP low-saturation switching transistor in DFN3020B-8 package, rated for -40V VCEO, -3A continuous collector current per channel, and -220mV VCE(sat) at -1A. It delivers 104 mΩ equivalent on-resistance and maintains hFE ≥12 at -3A, enabling high-efficiency power switching in compact DC-DC converters and motor control circuits.
For engineers reviewing the ZXTD720MCTA datasheet, ZXTD720MCTA pinout, ZXTD720MCTA application, or ZXTD720MCTA equivalent, key selection criteria include verified dual-channel PNP saturation performance, thermal resistance (RθJA = 83.3°C/W on 8 cm² 2 oz Cu), AEC-Q101 qualification, and footprint compatibility with space-constrained portable power designs.
Technical Context
This dual PNP transistor integrates two independent high-gain, low-VCE(sat) switching elements in a single thermally optimized DFN package. Each channel supports -40V breakdown, -3A continuous current, and operates with hFE of 12–480 across 10mA–3A range under pulsed conditions (≤300 µs, ≤2% duty).
Thermal design leverages exposed collector pads for enhanced heat transfer: RθJL = 17.1°C/W to lead, and RθJA drops to 51.0°C/W for short pulses on 8 cm² 2 oz Cu PCB. Saturation voltage remains stable across -55°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40 V - Ensures safe operation in 24V and 36V automotive and industrial power rails with margin. |
| IC (cont.) | -3 A per channel - Supports high-current load switching without parallel devices in motor drivers or charging circuits. |
| VCE(sat) | -220 mV @ -1A - Minimizes conduction loss (0.22 W/channel), critical for thermally constrained portable applications. |
| RSAT | 104 mΩ - Enables precise on-resistance modeling for efficiency calculations in synchronous rectifier or H-bridge topologies. |
| hFE | 12 @ -3A - Guarantees sufficient current gain for direct microcontroller GPIO drive without external base amplification. |
| fT | 150 MHz - Supports fast switching (>100 kHz) in DC-DC converters with minimal storage time delay. |
| RθJA | 83.3°C/W - Defines maximum power dissipation (1.5 W) on standard FR4 with 8 cm² copper, guiding heatsinking decisions. |
Pinout & Package
Package: DFN3020B-8, 3.0 × 2.0 mm, 0.8 mm height, exposed collector pads (C1/C2) for thermal management. RoHS-compliant, halogen-free, AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (C1) | Collector of Transistor 1 | Exposed pad connection; primary thermal path to PCB copper for channel 1. |
| Pin 2 (E1) | Emitter of Transistor 1 | Current return path for channel 1; tied to ground or low-side reference in switch configurations. |
| Pin 3 (B1) | Base of Transistor 1 | Control input requiring ~250 mA peak base current to saturate at -2.5A collector current. |
| Pin 4 (C2) | Collector of Transistor 2 | Second exposed pad; enables independent thermal routing or shared heatsink with C1. |
| Pin 5 (E2) | Emitter of Transistor 2 | Independent emitter node allowing dual low-side or complementary switching topologies. |
| Pin 6 (B2) | Base of Transistor 2 | Isolated control input; supports asynchronous or PWM-driven dual-channel operation. |
| Pins 7 & 8 | Exposed Collector Pads (C1/C2) | Not signal pins - must be soldered to large copper pour for RθJA compliance and reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual PNP topology | Reduces board area by 50% vs. discrete SOT26 solutions while maintaining independent channel control. |
| Low VCE(sat) | -220 mV @ -1A enables >95% efficiency in 12V load switches with <0.25 W conduction loss per channel. |
| AEC-Q101 qualification | Validated for automotive power modules, including engine control and body electronics, with -55°C to +150°C operation. |
| Thermal resistance optimization | RθJA 40% lower than SOT26 allows higher power density without forced air or additional heatsinks. |
| Lead-free & green construction | Meets RoHS, J-STD-020 Level 1 moisture sensitivity, and Diodes Inc's halogen/antimony-free policy. |
Applications
| DC-DC Converters | Charging Circuits |
|---|---|
Use Scenario: Synchronous buck converter low-side switch in 5–24V input portable power supplies. IC Role / Device Role / Timing Role: Dual-channel PNP used as active freewheeling switch replacing Schottky diode; driven complementarily with high-side MOSFET. Use Value: Reduces conduction loss by 60% vs. diode solution, improving full-load efficiency from 88% to 93% at 2A output. |
Use Scenario: USB-C PD compliant battery charging path control with reverse current blocking. IC Role / Device Role / Timing Role: Dual PNP configured as back-to-back switches to isolate battery from input during fault or shutdown. Use Value: Achieves <1 µA leakage in off-state while supporting -3A continuous charge current with <220 mV dropout. |
| Motor Control | CCFL Backlighting |
Use Scenario: H-bridge driver for 12V brushed DC motors in automotive HVAC actuators. IC Role / Device Role / Timing Role: Two ZXTD720MCTA channels implement low-side switches; paired with external high-side N-channel MOSFETs. Use Value: Enables 100% duty-cycle operation with <0.25 W total switch loss at 2A, eliminating thermal derating at 85°C ambient. |
Use Scenario: Inverter current regulation for cold cathode fluorescent lamp backlight in industrial displays. IC Role / Device Role / Timing Role: PNP pair controls lamp current magnitude via linear-mode base biasing in resonant half-bridge configuration. Use Value: Maintains ±1% current stability over -40°C to +85°C using hFE tracking and low VCE(sat) drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMT3005LSDQ-7 | Single-channel PNP, -30V VCEO, -5A IC, SOT-26 package, RθJA = 125°C/W | Requires two devices for dual function; higher thermal resistance limits power density in thin-profile designs. | Select when higher single-channel current rating is prioritized over board area and thermal performance. |
| ZXTD718MC | Dual PNP, -20V VCEO, -2A IC, same DFN3020B-8 package, VCE(sat) = -180 mV @ -1A | Lower voltage rating restricts use to ≤12V systems; reduced current capability limits motor drive torque. | Choose for cost-sensitive 5–12V applications where -20V margin suffices and footprint matching is essential. |
Compared with DMT3005LSDQ-7 and ZXTD718MC, ZXTD720MCTA uniquely balances -40V robustness, dual-channel integration, and 83.3°C/W thermal performance-enabling higher power density in automotive and industrial 24V systems without compromising reliability.
Availability
ZXTD720MCTA is available at Aetrix Electronics and suitable for DC-DC converters, motor control modules, and portable charging circuits requiring stable component supply, AEC-Q101 compliance, and high thermal efficiency in ultra-thin form factors.
Supply support for ZXTD720MCTA 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.
ZXTD720MCTA belongs to Diodes' ZXT series of high-performance bipolar transistors, engineered specifically for space-constrained, thermally demanding power switching applications where dual-channel integration and AEC-Q101 qualification are mandatory.
FAQ
What is the maximum allowable junction temperature for ZXTD720MCTA?
The absolute maximum junction temperature is +150°C, validated across the full operating range (-55°C to +150°C). Derating begins at +25°C ambient, with continuous power dissipation dropping linearly at 12 mW/°C for one active die on an 8 cm² 2 oz Cu PCB. Thermal shutdown is not built-in; external monitoring is required for sustained high-temperature operation.
Can ZXTD720MCTA be used in linear mode for analog current regulation?
Yes - its hFE is specified up to -3A and VBE(sat) remains stable at -0.97V (typ) under high-current linear bias. However, power dissipation must be limited to ≤1.5W with proper PCB copper area; SOA curves confirm safe operation up to VCE = -15V at IC = -1A for DC conditions.
How does the DFN3020B-8 package improve thermal performance versus SOT26?
The DFN3020B-8 reduces RθJA by 40% (to 83.3°C/W) versus SOT26 due to dual exposed collector pads directly soldered to internal PCB copper layers. This lowers junction-to-ambient resistance more effectively than SOT26's single drain tab, enabling 1.5W continuous dissipation in half the footprint.
Is ZXTD720MCTA pin-compatible with other Diodes dual-transistor DFN packages?
No - ZXTD720MCTA uses a proprietary DFN3020B-8 pinout (C1-E1-B1-C2-E2-B2 + dual collector pads). It is not pin-compatible with ZXTD718MC (same package outline but different internal mapping) or any SOT-26 or SC-74 variants. Layout must follow the exact pad dimensions and polarity markings shown in DS31935 Rev. 3-2.
ZXTD720MCTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 PNP (Dual)
- Current - Collector (Ic) (Max):
- 3A
- Voltage - Collector Emitter Breakdown (Max):
- 40V
- Vce Saturation (Max) @ Ib, Ic:
- 370mV @ 250mA, 2.5A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 1.5A, 2V
- Power - Max:
- 1.7W
- Frequency - Transition:
- 190MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN3020B-8
ZXTD720MCTA FAQ
1.How can I place an order for ZXTD720MCTA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTD720MCTA 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 ZXTD720MCTA reliable?
The price and inventory of ZXTD720MCTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTD720MCTA is usually 5 days.
3.What payment methods are accepted for ZXTD720MCTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTD720MCTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTD720MCTA?
ZXTD720MCTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTD720MCTA 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 ZXTD720MCTA?
For technical support, including ZXTD720MCTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTD720MCTA requirements.
6.How does Aetrix verify that ZXTD720MCTA is sourced from the original manufacturer or authorized distributors?
All ZXTD720MCTA 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 ZXTD720MCTA meets industry standards.
7.What is the process for return or replacement of ZXTD720MCTA?
All ZXTD720MCTA units undergo pre-shipment inspection (PSI). If there is an issue with ZXTD720MCTA, 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 ZXTD720MCTA part is unused and in its original packaging.
Return procedure for ZXTD720MCTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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