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Diodes Incorporated 2DD2679-13
- Part No.:
- 2DD2679-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
2DD2679-13.pdf
- Description:
- TRANS NPN 30V 2A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,148
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Product details
Overview
2DD2679-13 from Diodes Incorporated is a low VCE(SAT) NPN surface-mount transistor in SOT89-3L package, rated for 30 V VCEO, 2 A continuous IC, and 0.9 W power dissipation on standard FR-4 PCB. It delivers 270–680 hFE at 200 mA and achieves 80–370 mV VCE(SAT) at IC = 1.5 A / IB = 75 mA, enabling efficient medium-power switching in DC-DC converter output stages.
For engineers reviewing the 2DD2679-13 datasheet, 2DD2679-13 pinout, 2DD2679-13 application, or 2DD2679-13 equivalent, key selection criteria include verified VCE(SAT) performance under pulsed 1.5 A load, thermal resistance of 139 °C/W (standard layout), complementary PNP pairing with 2DB1714, and RoHS-compliant matte tin plating over copper leadframe.
Technical Context
This NPN bipolar junction transistor uses epitaxial planar die construction to ensure stable gain and low saturation voltage across temperature. Its design targets medium-power linear and switching roles where precise current control and thermal management on compact PCBs are critical.
The device operates across –55 °C to +150 °C junction temperature range and supports pulsed IC up to 4 A. Its fT of 240 MHz at VCE = 2 V / IC = 100 mA enables use in high-speed switching applications requiring fast turn-on/turn-off response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum safe collector-emitter voltage before breakdown under DC conditions |
| IC (continuous) | 2 A - Continuous collector current rating on standard FR-4 PCB with minimal copper |
| VCE(SAT) | 80–370 mV @ IC=1.5 A, IB=75 mA - Low conduction loss enabling high-efficiency switching |
| hFE | 270–680 @ VCE=2 V, IC=200 mA - Stable DC current gain for predictable base drive sizing |
| fT | 240 MHz @ VCE=2 V, IC=100 mA - Bandwidth sufficient for >100 kHz PWM switching |
| RθJA | 139 °C/W - Thermal resistance defining junction-to-ambient rise per watt on recommended pad layout |
| Package | SOT89-3L - Surface-mount outline with exposed collector tab for thermal relief and mechanical stability |
Pinout & Package
SOT89-3L package features an exposed collector tab for enhanced thermal conduction and mechanical anchoring. Molded green compound meets UL 94V-0 flammability rating; moisture sensitivity level is J-STD-020D Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (left) | Collector | Main current-carrying terminal; electrically connected to exposed metal tab for heat sinking |
| Pin 2 (center) | Emitter | Current return path; tied to ground or low-side reference in common-emitter configurations |
| Pin 3 (right) | Base | Control input; requires ~75 mA drive for full saturation at 1.5 A collector load |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(SAT) | 80 mV typical at IC=1.5 A - Reduces conduction loss and self-heating in high-duty-cycle operation |
| Epitaxial planar die | Stable hFE and VBE(ON) across temperature - Enables consistent base drive design from –55 °C to +150 °C |
| RoHS-compliant plating | Matte tin annealed over copper - Ensures solderability per MIL-STD-202 Method 208 and eliminates lead contamination risk |
| Complementary PNP pair | 2DB1714 available - Supports push-pull or H-bridge topologies without cross-manufacturer qualification effort |
Applications
| DC-DC Converter Output Stage | LED Driver Switch |
|---|---|
Use Scenario: High-current buck converter output switch handling 1–2 A load with 100–500 kHz PWM. IC Role / Device Role / Timing Role: Main NPN switching transistor controlling energy transfer to output inductor and capacitor. Use Value: 80 mV typical VCE(SAT) minimizes I²R losses and maintains <1.5 W junction temperature rise at full load. | Use Scenario: Constant-current LED string driver with analog dimming via base current modulation. IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink regulating forward current through high-brightness LEDs. Use Value: 270–680 hFE allows precise current setting with low-base-drive overhead and stable thermal behavior. |
| Industrial Relay Driver | Motor Control Interface |
Use Scenario: Driving 24 V DC coil relays in PLC I/O modules with 10–20 ms switching cycles. IC Role / Device Role / Timing Role: Medium-power interface transistor amplifying microcontroller GPIO to relay coil current. Use Value: 4 A peak pulse rating supports relay inrush currents without secondary protection components. | Use Scenario: Half-bridge low-side switch in brushed DC motor control for HVAC actuators or fans. IC Role / Device Role / Timing Role: Ground-referenced switching element enabling bidirectional motor control when paired with PNP high-side. Use Value: Complementary pairing with 2DB1714 simplifies matched drive design and thermal balancing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX851 | VCEO = 60 V, VCE(SAT) = 150–400 mV @ IC=1 A - Higher voltage rating but higher saturation voltage | Preferred in 48 V industrial systems; less optimal for 24 V/low-loss designs | Select when system bus voltage exceeds 30 V or when higher breakdown margin is required |
| MMBT4401 | IC = 600 mA, RθJA = 270 °C/W - Lower current and thermal capability than 2DD2679-13 | Suitable only for sub-1 A loads; insufficient for sustained 1.5 A switching | Use only in space-constrained, low-power signal-switching roles where 2DD2679-13's footprint is prohibitive |
Compared with ZTX851 and MMBT4401, the 2DD2679-13 uniquely balances 2 A continuous current, 30 V rating, and ultra-low 80 mV typical VCE(SAT) in SOT89-3L-making it optimal for thermally constrained 24 V medium-power switching where efficiency and reliability are co-prioritized.
Availability
2DD2679-13 is available at Aetrix Electronics and suitable for DC-DC converters, LED drivers, industrial relay interfaces, and motor control circuits requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for 2DD2679-13 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, industry-qualified components for automotive, industrial, and consumer markets.
The 2DD2679-13 belongs to Diodes' general-purpose bipolar transistor product line, engineered specifically for medium-power switching and amplification in thermally demanding surface-mount applications.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The 2DD2679-13 has an operating junction temperature range of –55 °C to +150 °C. For continuous operation, thermal design must ensure TJ remains ≤150 °C under worst-case ambient and power dissipation conditions, using the specified RθJA = 139 °C/W for standard PCB layout.
Is the 2DD2679-13 pin-compatible with other SOT89-3L transistors?
Yes-pin assignment (Collector–Emitter–Base) matches standard SOT89-3L orientation per JEDEC MO-220. However, electrical parameters such as hFE, VCE(SAT), and fT differ significantly across devices; direct substitution requires validation of gain, saturation voltage, and switching speed in the target circuit.
Does this transistor support pulsed operation beyond its continuous current rating?
Yes-the datasheet specifies ICM = 4 A peak pulse current under pulsed conditions (300 μs width, ≤2% duty cycle). This enables short-duration overload handling, such as relay coil inrush or motor startup surges, without exceeding safe SOA limits.
How does the "Green" molding compound affect PCB assembly?
The halogen-free, UL 94V-0 compliant green molding compound eliminates brominated flame retardants and ensures compatibility with lead-free reflow profiles. It exhibits no outgassing or delamination issues during standard IPC/JEDEC J-STD-020D Level 1 moisture exposure, supporting robust automated assembly.
2DD2679-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 370mV @ 75mA, 1.5A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 270 @ 200mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 240MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
2DD2679-13 FAQ
1.How can I place an order for 2DD2679-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2DD2679-13 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 2DD2679-13 reliable?
The price and inventory of 2DD2679-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2DD2679-13 is usually 5 days.
3.What payment methods are accepted for 2DD2679-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2DD2679-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2DD2679-13?
2DD2679-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2DD2679-13 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 2DD2679-13?
For technical support, including 2DD2679-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2DD2679-13 requirements.
6.How does Aetrix verify that 2DD2679-13 is sourced from the original manufacturer or authorized distributors?
All 2DD2679-13 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 2DD2679-13 meets industry standards.
7.What is the process for return or replacement of 2DD2679-13?
All 2DD2679-13 units undergo pre-shipment inspection (PSI). If there is an issue with 2DD2679-13, 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 2DD2679-13 part is unused and in its original packaging.
Return procedure for 2DD2679-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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