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Diodes Incorporated DSS5220TQ-7
- Part No.:
- DSS5220TQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DSS5220TQ-7.pdf
- Description:
- TRANS PNP 20V 2A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
DSS5220TQ from Diodes Incorporated is a 20V PNP low-saturation transistor in SOT23 package, designed for high-current switching in automotive and industrial power control circuits. It delivers -2A continuous collector current, -150mV VCE(sat) at -1A, and 113mΩ equivalent on-resistance, enabling efficient low-voltage load switching in battery-powered ECUs and motor drivers.
For engineers reviewing the DSS5220TQ datasheet, DSS5220TQ pinout, DSS5220TQ application, or DSS5220TQ equivalent, key selection criteria include its AEC-Q101 qualification, -20V BVCEO, thermal resistance of 104°C/W (on 25mm×25mm copper), and IATF16949-certified manufacturing - critical for automotive-grade reliability and thermal design validation.
Technical Context
The DSS5220TQ is a silicon PNP bipolar junction transistor optimized for low-VCE(sat) operation under high DC and pulsed loads. Its hFE ranges from 150 to 225 across -100mA to -2A collector currents, supporting stable current gain in linear and saturated switching modes.
It features robust transient thermal response (RθJA = 104°C/W on 25mm×25mm PCB) and JEDEC Class 3A HBM ESD rating (4kV), making it suitable for environments with electrical noise and thermal cycling - such as automotive body control modules and industrial solenoid drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -20V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC (continuous) | -2A - Sustained DC load current capability without derating on standard PCB layout |
| VCE(sat) | <-150mV @ -1A, -50mA IB - Enables <150mW conduction loss per switch at 1A, reducing heat generation |
| RCE(sat) | 113mΩ - Low equivalent on-resistance supports high-efficiency switching in low-voltage (<5V) systems |
| hFE | 150–225 - Stable DC current gain across 100mA–2A range, simplifying base drive design |
| TJ range | -55°C to +150°C - Full operational temperature support for under-hood automotive applications |
| ESD HBM | 4,000V - Robust electrostatic immunity for assembly and field operation in unshielded environments |
Pinout & Package
Package: SOT23 - Surface-mount, 3-pin plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, weight ≈ 0.008g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal; connects to positive rail in high-side switch configurations |
| 2 (Base) | B | Control input; requires ~100mA drive for full saturation at -2A IC |
| 3 (Collector) | C | Load connection point; ties to switched load (e.g., relay coil, LED string, motor winding) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP capability and IATF16949 manufacturing - ensures supply chain traceability and failure rate compliance |
| Low RCE(sat) | 113mΩ enables <226mW conduction loss at -2A, reducing heatsink requirements in space-constrained modules |
| VCE(sat) < -150mV | Minimizes voltage drop across transistor in saturation, preserving headroom in 3.3V/5V logic-controlled systems |
| Green, RoHS-compliant | Halogen- and antimony-free formulation (<900ppm Br/Cl, <1000ppm Sb) meets global environmental compliance mandates |
Applications
| Automotive Body Control Module | Industrial Solenoid Driver |
|---|---|
Use Scenario: Controlling door lock actuators and window lift motors in 12V vehicle architectures. IC Role / Device Role / Timing Role: High-side PNP switch managing up to 2A inductive loads with fast turn-off (toff = 205ns) to suppress back-EMF spikes. Use Value: -20V BVCEO and 4kV HBM withstand load dump transients and ESD events during assembly and service. | Use Scenario: Driving 24V DC solenoids in programmable logic controller (PLC) output stages. IC Role / Device Role / Timing Role: Power switch interfacing microcontroller GPIOs to external inductive loads via base resistor network. Use Value: 113mΩ RCE(sat) limits self-heating to <50°C rise at 2A on minimal copper, eliminating need for thermal vias. |
| USB-C Power Delivery Load Switch | Smart Lighting Dimming Circuit |
Use Scenario: Enabling/disabling 5V/3A USB-C power paths in portable docking stations. IC Role / Device Role / Timing Role: Low-loss series pass element controlled by MCU with precise VCE(sat) stability over temperature. Use Value: -150mV VCE(sat) at -1A preserves >97% voltage efficiency, meeting USB PD voltage tolerance specs. | Use Scenario: PWM-controlled dimming of high-brightness LED strings in architectural lighting fixtures. IC Role / Device Role / Timing Role: Fast-switching PNP driver stage amplifying microcontroller PWM signals to drive 1–2A LED loads. Use Value: 100MHz fT and 49ns fall time ensure clean PWM edge fidelity up to 20kHz, eliminating visible flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP low-saturation transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMT3005LPS-7 | PNP MOSFET (not BJT); RDS(on) = 45mΩ @ VGS = -4.5V; no base current required | Lower gate drive complexity but higher cost; less tolerant of voltage overshoot during inductive turn-off | Select when minimizing base drive power and achieving sub-50mΩ on-resistance is prioritized over cost and ruggedness |
| MMDT5401-7 | PNP BJT; lower IC = -200mA, VCE(sat) = -300mV @ -10mA; not AEC-Q101 qualified | Suitable only for signal-level switching; lacks thermal and automotive qualification for power loads | Use only in non-automotive, low-current (<200mA), non-safety-critical signal routing |
Compared with DMT3005LPS-7 and MMDT5401-7, the DSS5220TQ uniquely balances automotive qualification, -2A current handling, and -150mV saturation voltage in SOT23 - making it the only option among the three qualified for under-hood 12V load switching with validated thermal performance.
Availability
DSS5220TQ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC output stages, and USB-C power delivery load switching requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance across production batches.
Supply support for DSS5220TQ 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 devices, with operations certified to IATF16949 and ISO9001 standards.
The DSS5220TQ belongs to Diodes' Automotive-Grade Power Transistor product line, engineered specifically for high-reliability, low-saturation switching in 12V/24V automotive and industrial control systems.
FAQ
What is the maximum allowable continuous collector current for DSS5220TQ?
The DSS5220TQ supports -2A continuous collector current at TA = +25°C on a 25mm × 25mm 1oz copper PCB. Derating is required above +25°C ambient; at +100°C, max IC drops to approximately -1.1A based on its 104°C/W RθJA and 1.2W PD limit.
Is DSS5220TQ suitable for high-frequency PWM switching?
Yes - with a transition frequency fT of 100MHz and measured switching times (toff = 205ns, tf = 49ns), the DSS5220TQ supports clean PWM operation up to 20kHz in LED dimming and motor control, provided base drive strength and PCB layout minimize parasitic inductance.
Does DSS5220TQ require a base resistor, and what value is recommended?
Yes - a base resistor is required to limit base current. For -2A IC with hFE ≥150, minimum IB = -13.3mA is needed. With VBE(sat) ≈ -1.1V and 3.3V GPIO drive, a 165Ω resistor delivers -13.3mA; 150Ω is recommended for margin, yielding ~-14.7mA IB.
How does the DSS5220TQ's AEC-Q101 qualification impact its use in non-automotive designs?
AEC-Q101 qualification ensures extended temperature operation (-55°C to +150°C), enhanced ESD robustness (4kV HBM), and rigorous process controls - benefits that directly improve reliability in demanding industrial, medical, and outdoor equipment, even when automotive certification isn't mandated.
DSS5220TQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 100mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 225 @ 100mA, 2V
- Power - Max:
- 600 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DSS5220TQ-7 FAQ
1.How can I place an order for DSS5220TQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSS5220TQ-7 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 DSS5220TQ-7 reliable?
The price and inventory of DSS5220TQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSS5220TQ-7 is usually 5 days.
3.What payment methods are accepted for DSS5220TQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSS5220TQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSS5220TQ-7?
DSS5220TQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSS5220TQ-7 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 DSS5220TQ-7?
For technical support, including DSS5220TQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSS5220TQ-7 requirements.
6.How does Aetrix verify that DSS5220TQ-7 is sourced from the original manufacturer or authorized distributors?
All DSS5220TQ-7 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 DSS5220TQ-7 meets industry standards.
7.What is the process for return or replacement of DSS5220TQ-7?
All DSS5220TQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DSS5220TQ-7, 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 DSS5220TQ-7 part is unused and in its original packaging.
Return procedure for DSS5220TQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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