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Diodes Incorporated ZDT6702TC
- Part No.:
- ZDT6702TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- SOT-223-8
- Datasheet:
-
ZDT6702TC.pdf
- Description:
- TRANS NPN/PNP DARL 60V 1.75A SM8
- Quantity:
- Payment:
- Shipping:
Inventory:9,916
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Product details
Overview
ZDT6702TC from Diodes Incorporated is a complementary medium-power Darlington transistor pair (NPN+PNP) in a single SM-8 surface-mount package, rated for ±60 V VCEO, ±1.75 A continuous collector current, and 2.25 W dissipation per die. It delivers high DC current gain (hFE up to 13k at 10mA), low saturation voltage (VCE(sat) = 0.83 V @ 0.5A), and fast switching (ton = 0.5 µs), enabling use in automotive relay drivers and industrial motor control interfaces.
For engineers reviewing the ZDT6702TC datasheet, ZDT6702TC pinout, ZDT6702TC application, or ZDT6702TC equivalent, key selection criteria include complementary Darlington pairing, SM-8 thermal performance (55.6 °C/W RθJA), AEC-Q101 qualification readiness, and dual-die thermal derating behavior under simultaneous conduction.
Technical Context
The ZDT6702TC integrates matched NPN and PNP Darlington transistors on one die substrate, sharing common thermal mass but electrically isolated. Each transistor features built-in base-emitter resistors for simplified biasing and exhibits high hFE across wide current ranges (5k–13k for NPN; 2k–8k for PNP) with consistent VBE(sat) ≈ 1.68 V (NPN) and −1.7 V (PNP) at full rated current.
Its SM-8 package enables dual-transistor functionality in footprint-constrained PCB layouts while maintaining separate thermal paths-allowing independent power handling up to 2.25 W per device or combined 2.75 W when both operate at balanced duty cycles. Switching performance is specified under pulsed conditions (300 µs, ≤2% duty cycle) to preserve junction temperature integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | ±60 V - Supports 48 V industrial bus and 12/24 V automotive loads with margin against inductive kickback |
| IC (continuous) | ±1.75 A - Drives solenoids, small motors, or LED arrays without external heat sinking at ambient ≤50°C |
| hFE | 5k–13k (NPN), 2k–8k (PNP) - Reduces required base drive current by >10× vs. single-stage BJTs |
| VCE(sat) | 0.83–1.28 V (NPN), −0.86–−1.28 V (PNP) - Limits conduction loss to <2.2 W at 1.75 A, easing thermal design |
| ton/toff | 0.5 / 2.1 µs (NPN), 0.75 / 1.2 µs (PNP) - Enables PWM operation up to ~500 kHz with controlled edge rates |
| RθJA | 55.6 °C/W (single die), 45.5 °C/W (both on) - Requires ≥2 in² copper pour for full-power operation per JEDEC J-STD-020 |
| TJ range | −55 to +150 °C - Qualified for under-hood automotive environments and industrial enclosures |
Pinout & Package
Package: SM-8, 8-pin surface-mount molded plastic (UL 94V-0), matte tin-plated leads, 0.117 g weight, compatible with reflow per JEDEC J-STD-020 (260°C/30 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NPN Emitter | Common emitter reference for NPN Darlington stage; tied to ground or low-side return path |
| 2 | NPN Base | Control input for NPN output; internal resistor network simplifies driver interface |
| 3 | NPN Collector | High-current switched output node for NPN side; connects to load anode or VCC rail |
| 4 | Thermal Pad (exposed) | Primary thermal path to PCB copper; must be soldered to solid thermal plane for rated power |
| 5 | PNP Collector | High-current switched output node for PNP side; connects to load cathode or ground return |
| 6 | PNP Base | Control input for PNP output; internally biased for direct logic-level drive compatibility |
| 7 | PNP Emitter | Common emitter reference for PNP Darlington stage; ties to VCC or high-side supply rail |
| 8 | NC (No Connect) | Unused terminal; left unconnected per datasheet; no internal bonding or function |
Key Features
| Feature | Design Value |
|---|---|
| Complementary Darlington Pair | Single SM-8 package integrates matched NPN and PNP devices with symmetrical breakdown and gain specs, eliminating layout mismatch and thermal tracking errors |
| Integrated Base Resistors | Eliminates need for external bias resistors-reduces BOM count and PCB area while ensuring stable turn-on/turn-off thresholds |
| AEC-Q101 Readiness | Manufactured in IATF 16949-certified facilities with PPAP capability; supports automotive qualification pathways for body electronics and chassis modules |
| Dual-Die Thermal Management | Independent thermal resistance values (55.6/45.5 °C/W) allow accurate junction temperature prediction whether operating single- or dual-sided |
| High Gain at High Current | hFE ≥ 5k maintained at IC = 1.75 A, enabling efficient drive of 1 A+ loads with microcontroller GPIO-level base current |
Applications
| Automotive Relay Driver | Industrial Solenoid Interface |
|---|---|
Use Scenario: Driving 12 V/24 V automotive relays in door lock, window lift, or lighting control modules. IC Role / Device Role / Timing Role: Complementary Darlington switch providing low-loss, high-gain interface between MCU GPIO and relay coil. Use Value: Eliminates need for discrete driver stages; VCE(sat) < 0.9 V at 0.5 A reduces coil heating and extends relay life. | Use Scenario: Controlling pneumatic/hydraulic solenoids in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Medium-power bidirectional switching element handling 1.5 A inductive loads with flyback protection. Use Value: Dual-die structure allows alternating NPN/PNP activation for H-bridge-like directional control without cross-conduction risk. |
| DC Motor Direction Control | LED Array Power Switch |
Use Scenario: Bidirectional control of small brushed DC motors (e.g., HVAC actuators, seat adjusters) in embedded systems. IC Role / Device Role / Timing Role: Complementary output stage enabling forward/reverse polarity reversal via logic-controlled NPN/PNP conduction. Use Value: Matched VCE(sat) and hFE ensure symmetric motor torque and speed response in both directions. | Use Scenario: High-efficiency on/off switching of multi-segment LED arrays in signage or dashboard backlighting. IC Role / Device Role / Timing Role: Low-saturation, high-current switch managing up to 1.75 A per channel with minimal thermal rise. Use Value: 2.25 W per die rating supports sustained 100% duty-cycle operation with standard 2 in² PCB copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary Darlington switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTD6717E6TA | Lower VCEO (±30 V), higher fT (200 MHz), SOT-26 package | Better suited for high-frequency switching (>100 kHz) but limited to 30 V systems | Select when board space is critical and voltage stress <30 V; not suitable for 48 V or automotive battery transients |
| MMDT3904-7-F | Discrete NPN+PNP pair (no Darlington gain), SOT-363, max IC = ±200 mA | Lower current capacity, no integrated base resistors, requires external bias network | Choose for cost-sensitive, low-power (<200 mA) designs where Darlington gain is unnecessary and layout flexibility is prioritized |
Compared with ZXTD6717E6TA and MMDT3904-7-F, the ZDT6702TC uniquely balances 60 V robustness, 1.75 A drive, and integrated Darlington gain in one thermally optimized SM-8 package-making it optimal for medium-power automotive and industrial switching where reliability and simplicity outweigh ultra-high-speed or ultra-low-cost requirements.
Availability
ZDT6702TC is available at Aetrix Electronics and suitable for automotive relay drivers, industrial solenoid interfaces, DC motor direction controllers, and LED array power switches requiring stable component supply and long-term manufacturability.
Supply support for ZDT6702TC 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The ZDT6702TC belongs to Diodes' high-reliability discrete transistor portfolio, engineered specifically for automotive and industrial applications demanding robustness, thermal stability, and qualification-ready manufacturing processes.
FAQ
Is the ZDT6702TC qualified to AEC-Q101?
No, the ZDT6702TC itself is not AEC-Q101 certified, but Diodes states it is manufactured in IATF 16949-certified facilities and supports PPAP documentation. Customers requiring formal qualification must initiate a joint qualification program with Diodes; the device is explicitly designated "for automotive applications requiring specific change control."
What is the function of Pin 8 (NC) on the ZDT6702TC?
Pin 8 is a no-connect terminal with no internal bond wire or circuit connection. It is a mechanical placeholder in the SM-8 leadframe and must remain unconnected in PCB layout and assembly-soldering or routing to this pin may cause mechanical stress or unintended shorts.
Can both NPN and PNP transistors operate simultaneously in the ZDT6702TC?
Yes, both transistors can conduct simultaneously, but total power dissipation is limited to 2.75 W (not 4.5 W), and thermal resistance drops to 45.5 °C/W. Simultaneous operation increases junction temperature faster; design must verify TJ remains ≤150°C using actual duty cycle and ambient conditions.
Why does the datasheet state "NOT RECOMMENDED FOR NEW DESIGNS"?
This notice indicates Diodes has introduced newer-generation alternatives (e.g., higher-efficiency, smaller-footprint, or AEC-Q101-qualified successors). The ZDT6702TC remains fully supported for existing production and legacy designs, with no announced obsolescence date or last-time-buy announcement.
ZDT6702TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-223-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- 1 NPN, 1 PNP Darlington (Dual)
- Current - Collector (Ic) (Max):
- 1.75A
- Voltage - Collector Emitter Breakdown (Max):
- 60V
- Vce Saturation (Max) @ Ib, Ic:
- 1.28V @ 2mA, 1.75A
- Current - Collector Cutoff (Max):
- 500nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 5000 @ 500mA, 5V / 2000 @ 500mA, 5V
- Power - Max:
- 2.75W
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SM8
ZDT6702TC FAQ
1.How can I place an order for ZDT6702TC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZDT6702TC 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 ZDT6702TC reliable?
The price and inventory of ZDT6702TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZDT6702TC is usually 5 days.
3.What payment methods are accepted for ZDT6702TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZDT6702TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZDT6702TC?
ZDT6702TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZDT6702TC 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 ZDT6702TC?
For technical support, including ZDT6702TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZDT6702TC requirements.
6.How does Aetrix verify that ZDT6702TC is sourced from the original manufacturer or authorized distributors?
All ZDT6702TC 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 ZDT6702TC meets industry standards.
7.What is the process for return or replacement of ZDT6702TC?
All ZDT6702TC units undergo pre-shipment inspection (PSI). If there is an issue with ZDT6702TC, 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 ZDT6702TC part is unused and in its original packaging.
Return procedure for ZDT6702TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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