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Diodes Incorporated DSS5220T-7
- Part No.:
- DSS5220T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DSS5220T-7.pdf
- Description:
- TRANS PNP 20V 2A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
DSS5220T-7 from Diodes Incorporated is a 20V PNP low-saturation bipolar junction transistor in SOT23 package, rated for −2A continuous collector current and −3A peak pulse current, with VCE(sat) < −150 mV at −1A and RCE(sat) = 113 mΩ, deployed in automotive load switching and power management circuits.
For engineers reviewing the DSS5220T-7 datasheet, DSS5220T-7 pinout, DSS5220T-7 application, or DSS5220T-7 equivalent, key selection criteria include verified PNP saturation voltage under −1A/−2A loads, thermal resistance (RθJA = 209°C/W on minimal pad), AEC-Q101 qualification status, and SOT23 lead-free compliance per RoHS 3 and J-STD-020 Level 1.
Technical Context
This PNP transistor operates as a high-current, low-VCE(sat) switch in DC-DC converter output stages and automotive body control modules. Its hFE ranges from 150 to 225 across −100mA to −2A collector currents at VCE = −2V, supporting stable gain in linear and saturated switching modes.
With fT = 100 MHz, Ccbo = 50 pF, and switching times (ton = 190 ns, toff = 205 ns) measured at −10V VCC, it delivers fast turn-on/off performance suitable for PWM-driven 12V/24V systems while maintaining robust ESD immunity (HBM = 4 kV, MM = 400 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −20 V - Maximum allowable collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (continuous) | −2 A - Continuous DC collector current capability without thermal derating on standard PCB layout. |
| VCE(sat) | < −150 mV @ −1A/−50mA - Ensures minimal conduction loss and heat generation in high-duty-cycle switching. |
| RCE(sat) | 113 mΩ - Equivalent on-resistance enabling precise power loss calculation in load-switching designs. |
| hFE | 150–225 - DC current gain range across −100mA to −2A, supporting predictable base drive sizing. |
| RθJA | 209 °C/W - Junction-to-ambient thermal resistance on minimal 1oz copper PCB, defining max ambient temperature for safe operation. |
| ESD HBM | 4,000 V - Human Body Model rating confirming robustness against handling-induced electrostatic discharge. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal; connects to higher potential rail in PNP switching applications. |
| 2 (Base) | B | Control input; requires negative current relative to emitter to saturate transistor. |
| 3 (Collector) | C | Current sink terminal; connects to load and ground return path in typical high-side switch topology. |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation voltage | VCE(sat) ≤ −150 mV at −1A enables <150 mW conduction loss, reducing thermal stress in compact layouts. |
| High current capability | −2A continuous rating supports direct driving of solenoids, relays, and LED arrays without external amplification. |
| Automotive-grade reliability | Qualified per AEC-Q101 (DSS5220TQ variant); manufactured in IATF 16949-certified facilities with PPAP support. |
| Green packaging | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb), UL 94V-0 rated. |
Applications
| Automotive Body Control Module | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Switching 12V loads such as door locks, window motors, and interior lighting in vehicle BCMs. IC Role / Device Role / Timing Role: High-side PNP switch controlling current flow from battery to load. Use Value: Low VCE(sat) minimizes voltage drop and self-heating during sustained actuation cycles. |
Use Scenario: Active synchronous rectification or post-regulation switching in isolated flyback or buck-derived converters. IC Role / Device Role / Timing Role: Low-loss power switch in secondary-side regulation path. Use Value: 113 mΩ RCE(sat) reduces conduction loss by >30% versus standard PNP transistors at −2A. |
| Smart Home Power Distribution Unit | Medical Portable Device Load Management |
Use Scenario: Controlled power enable/disable for USB-C PD accessories, fans, and sensors in residential hubs. IC Role / Device Role / Timing Role: Precision current-controlled switch with defined saturation behavior. Use Value: Tight hFE consistency (150–225) ensures repeatable base drive design across production lots. |
Use Scenario: Battery-powered infusion pump motor enable and diagnostic load switching. IC Role / Device Role / Timing Role: Safety-critical load isolation switch with validated ESD immunity. Use Value: 4 kV HBM ESD rating prevents field failures during assembly and end-user handling. |
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 |
|---|---|---|---|
| DMT3005LKQ-7 | −30V VCEO, −3.5A IC, RCE(sat) = 85 mΩ, AEC-Q101 qualified, same SOT23-3 package. | Higher voltage/current headroom; suited for 24V commercial vehicles and industrial PLC outputs. | Select when system voltage exceeds 20V or peak load current approaches −3A. |
| MMDT3906-7 | −40V VCEO, −200mA IC, VCE(sat) = −300 mV @ −50mA, lower power, non-automotive grade. | Limited to low-power signal switching; lacks AEC-Q101 qualification and thermal robustness. | Use only in cost-sensitive consumer electronics where −2A capability and automotive reliability are unnecessary. |
Compared with DMT3005LKQ-7, DSS5220T-7 offers tighter VCE(sat) control at mid-range currents but lower voltage margin; versus MMDT3906-7, it delivers 10× higher current capacity and certified automotive robustness at comparable footprint.
Availability
DSS5220T-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converter output stages, and smart home power distribution units requiring stable component supply and full RoHS 3 compliance.
Supply support for DSS5220T-7 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 DSS5220T belongs to Diodes' Automotive-Grade Power Transistor product line, engineered specifically for high-reliability, low-loss switching in 12V/24V automotive and industrial power systems.
FAQ
What is the maximum operating temperature for DSS5220T-7?
The DSS5220T-7 has an operating junction temperature range of −55°C to +150°C. Its thermal resistance (RθJA = 209°C/W on minimal pad layout) means that at 600 mW power dissipation, the junction rises ~125°C above ambient-so maximum ambient must be limited to +25°C for safe operation at full IC.
Is DSS5220T-7 qualified for automotive use?
The DSS5220T-7 is not AEC-Q101 qualified; however, its automotive-compliant variant DSS5220TQ is fully qualified and manufactured in IATF 16949-certified facilities. The standard DSS5220T-7 shares identical electrical specs and package but lacks PPAP documentation and change control required for automotive production.
How does the SOT23 pinout align with PCB layout requirements?
The SOT23 top-view pinout is E-B-C (pin 1–2–3). Recommended pad dimensions per Diodes' outline are C = 2.0 mm × 0.8 mm, X1 = 1.35 mm, Y = 0.9 mm, Y1 = 2.9 mm. Thermal relief and solder mask clearance must follow J-STD-020 Level 1 guidelines to ensure reflow reliability and thermal performance.
Can DSS5220T-7 replace a MOSFET in high-side switching applications?
No-it is a bipolar transistor requiring continuous base current to maintain saturation, unlike MOSFETs that are voltage-driven. For equivalent functionality, base drive circuitry must deliver −100mA to −200mA (per hFE and IC requirements), increasing system complexity versus gate-driven solutions.
DSS5220T-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 @ 500mA, 2V
- Power - Max:
- 1.2 W
- 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
DSS5220T-7 FAQ
1.How can I place an order for DSS5220T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSS5220T-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 DSS5220T-7 reliable?
The price and inventory of DSS5220T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSS5220T-7 is usually 5 days.
3.What payment methods are accepted for DSS5220T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSS5220T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSS5220T-7?
DSS5220T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSS5220T-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 DSS5220T-7?
For technical support, including DSS5220T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSS5220T-7 requirements.
6.How does Aetrix verify that DSS5220T-7 is sourced from the original manufacturer or authorized distributors?
All DSS5220T-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 DSS5220T-7 meets industry standards.
7.What is the process for return or replacement of DSS5220T-7?
All DSS5220T-7 units undergo pre-shipment inspection (PSI). If there is an issue with DSS5220T-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 DSS5220T-7 part is unused and in its original packaging.
Return procedure for DSS5220T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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