My Inquiry
My Account
Diodes Incorporated DSS5240Y-7
- Part No.:
- DSS5240Y-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DSS5240Y-7.pdf
- Description:
- TRANS PNP 40V 2A SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:7,389
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DSS5240Y-7 from Diodes Incorporated is a PNP bipolar junction transistor in SOT-363 package, rated for -40 V VCEO, -2 A continuous collector current, and ultra-low -100 mV VCE(sat) at IC = -100 mA / IB = -1 mA. It serves as a low-power switching and amplification device in compact DC-DC bias networks, LED current sinks, and level-shifting interfaces.
For engineers reviewing the DSS5240Y-7 datasheet, DSS5240Y-7 pinout, DSS5240Y-7 application, or DSS5240Y-7 equivalent, this part supports high-efficiency discrete switching where low saturation voltage, thermal robustness to +150°C, and RoHS-compliant green packaging are critical selection criteria.
Technical Context
This PNP transistor uses epitaxial planar die construction to achieve stable hFE of 300–450 (at IC = -100 mA) and fT of 100–220 MHz, enabling use in medium-speed switching and analog amplification up to ~100 MHz. Its -220 mΩ RCE(sat) at IC = -500 mA confirms low conduction loss under moderate load conditions.
Thermal performance is defined by RθJA = 200°C/W on FR-4 PCB with minimum pad layout, supporting operation across -55°C to +150°C ambient. Safe operating area (SOA) data shows capability for pulsed IC up to -3 A with tp = 100 µs, validating transient switching integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40 V - Maximum allowable collector-emitter voltage before breakdown; defines safe DC blocking capability in negative-rail switch configurations. |
| IC (continuous) | -2 A - Continuous collector current rating; sets upper limit for steady-state load switching in power management circuits. |
| VCE(sat) | -100 mV @ IC = -100 mA / IB = -1 mA - Ultra-low saturation voltage minimizes power loss and self-heating in high-duty-cycle switching. |
| hFE | 300–450 @ VCE = -2 V, IC = -100 mA - High DC current gain enables efficient base drive with minimal control current. |
| fT | 100–220 MHz - Current gain-bandwidth product supports RF-coupled preamplifier stages and fast digital switching up to ~50 MHz. |
| RθJA | 200°C/W - Junction-to-ambient thermal resistance on standard FR-4; determines temperature rise per watt dissipated in PCB-mounted design. |
Pinout & Package
Package: SOT-363 (SC-70-6), surface-mount, 6-pin plastic case with matte tin-plated copper alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitting terminal for PNP current flow | Connected to higher potential rail; anchors current path in common-emitter or common-base topologies. |
| 2 (Base) | Control input for transistor conduction | Receives negative bias current to turn on; requires current-limiting resistor in series for reliable drive. |
| 3 (Collector) | Current sink node | Connected to load and ground return; carries full switched current with minimal voltage drop when saturated. |
| 4 (Emitter) | Second emitter (dual-emitter configuration) | Enables dual-output or differential sensing; electrically isolated from Pin 1 but same material structure. |
| 5 (Base) | Second base terminal | Independent control for second transistor section; allows two independent PNP switches in one package. |
| 6 (Collector) | Second collector node | Provides second independent current-sink path; supports dual-channel load control without cross-talk. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VCE(sat) | -100 mV at light load ensures <10 mW conduction loss in 100 mA bias circuits, reducing thermal stress in space-constrained layouts. |
| Dual PNP structure in SOT-363 | Two independent PNP transistors share one 6-pin package, cutting board area by ~40% vs. discrete SOT-23 solutions. |
| Green, halogen-free construction | UL 94V-0 molded compound with no antimony or halogens meets IPC-1752A Class 1 reporting and automotive ELV compliance. |
| ESD robustness | 8 kV HBM and 400 V MM ratings allow direct handling in non-ESD-controlled assembly environments without gate protection. |
Applications
| LED Current Sink | DC-DC Feedback Bias |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a shared 3.3 V or 5 V rail with precise current limiting. IC Role / Device Role / Timing Role: PNP current sink controlling LED anode-to-rail current via emitter-follower configuration. Use Value: -100 mV VCE(sat) preserves >97% of supply headroom for LED forward voltage, enabling tighter current regulation. |
Use Scenario: Providing bias current to optocoupler input or error amplifier reference in isolated flyback converters. IC Role / Device Role / Timing Role: Low-leakage PNP switch enabling accurate feedback loop startup and stable regulation under light load. Use Value: -50 nA ICBO at 150°C prevents false triggering in high-temp industrial power supplies. |
| Level-Shifting Interface | Load Switch Control |
Use Scenario: Translating logic signals between 1.8 V microcontroller GPIO and 5 V peripheral enable lines. IC Role / Device Role / Timing Role: Active-low level shifter using common-emitter inversion with fixed base resistor network. Use Value: 220 MHz fT supports clean edge transitions up to 25 MHz, avoiding timing skew in synchronous interfaces. |
Use Scenario: Enabling/disabling 12 V solenoid drivers or relay coils in automotive body control modules. IC Role / Device Role / Timing Role: High-current PNP switch driving external N-channel MOSFET gate or directly sinking coil current. Use Value: -2 A IC rating and -350 mV VCE(sat) at -2 A ensure <700 mW dissipation during sustained actuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMT3005LSDQ-7 | Single PNP in SOT-23; VCE(sat) = -130 mV @ -500 mA; hFE = 200 min; no dual-transistor option. | Limited to single-channel use; smaller footprint but no functional redundancy or dual-load capability. | Select when board space is critical and only one switch is needed; avoid if dual-emitter isolation or matched pair behavior is required. |
| BC807-40DW-7 | Dual PNP in SOT-363; VCE(sat) = -250 mV @ -500 mA; hFE = 250–600; RoHS compliant but not halogen-free. | Higher saturation voltage increases conduction loss by ~150 mW at 500 mA; wider hFE spread affects drive consistency. | Acceptable for cost-sensitive consumer designs where thermal margin exceeds 15°C; not recommended for high-reliability industrial use. |
Compared with DMT3005LSDQ-7 and BC807-40DW-7, the DSS5240Y-7 uniquely combines dual-PNP integration, -100 mV VCE(sat) at low current, and halogen-free green construction-making it optimal for thermally constrained, dual-load, and environmentally regulated applications.
Availability
DSS5240Y-7 is available at Aetrix Electronics and suitable for LED driver circuits, DC-DC converter feedback networks, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS/halogen-free compliance.
Supply support for DSS5240Y-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 and manufacturing operations across Asia and the Americas.
The DSS5240Y belongs to Diodes' general-purpose bipolar transistor product line, engineered for high-reliability, low-voltage switching and amplification in space-constrained industrial, computing, and automotive subsystems.
FAQ
What is the maximum continuous collector current for DSS5240Y-7?
The DSS5240Y-7 is rated for -2 A continuous collector current at TA = 25°C with proper PCB thermal relief. Derating applies above 25°C ambient: power dissipation drops linearly to zero at 150°C, governed by its 200°C/W thermal resistance on FR-4 with minimum pad layout.
Does DSS5240Y-7 support dual independent switching functions?
Yes. The SOT-363 package contains two electrically isolated PNP transistors (Pins 1–3 and Pins 4–6), each with dedicated emitter, base, and collector terminals. No internal connection exists between the two sections, enabling true dual-channel operation without crosstalk.
What is the significance of the "ZP8" marking on DSS5240Y-7 reels?
"ZP8" is the Diodes Incorporated product type marking code printed on the device body and tape reels. It uniquely identifies the DSS5240Y-7 variant within the DSS52xx family and corresponds to the SOT-363 package, PNP polarity, and -40 V rating per the manufacturer's internal coding system.
How does the -5 V VEBO rating impact circuit design?
The -5 V emitter-base breakdown voltage limits reverse-bias voltage applied to the base-emitter junction. Exceeding this risks junction avalanche and permanent degradation. Designers must ensure base drive circuits never pull the base more than 5 V below emitter potential, especially during power sequencing or ESD events.
DSS5240Y-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 350mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 210 @ 1A, 2V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 220MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DSS5240Y-7 FAQ
1.How can I place an order for DSS5240Y-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSS5240Y-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 DSS5240Y-7 reliable?
The price and inventory of DSS5240Y-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSS5240Y-7 is usually 5 days.
3.What payment methods are accepted for DSS5240Y-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSS5240Y-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSS5240Y-7?
DSS5240Y-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSS5240Y-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 DSS5240Y-7?
For technical support, including DSS5240Y-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSS5240Y-7 requirements.
6.How does Aetrix verify that DSS5240Y-7 is sourced from the original manufacturer or authorized distributors?
All DSS5240Y-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 DSS5240Y-7 meets industry standards.
7.What is the process for return or replacement of DSS5240Y-7?
All DSS5240Y-7 units undergo pre-shipment inspection (PSI). If there is an issue with DSS5240Y-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 DSS5240Y-7 part is unused and in its original packaging.
Return procedure for DSS5240Y-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DSS5240Y-7 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
