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STMicroelectronics STS05DTP03
- Part No.:
- STS05DTP03
- Manufacturer:
- STMicroelectronics
- Category:
- Bipolar Transistor Arrays
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
STS05DTP03.pdf
- Description:
- TRANS NPN/PNP 30V 5A 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,551
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Product details
Overview
STS05DTP03 from STMicroelectronics is a dual NPN-PNP complementary power bipolar transistor in SO-8 package, designed for push-pull or totem-pole output stages. It delivers 5 A continuous collector current per transistor, 0.25 V typical VCE(sat) at 1 A/10 mA drive, and DC current gain ≥100 at 1 A, enabling efficient MOSFET/IGBT gate driving in motor and solenoid control circuits.
For engineers reviewing the STS05DTP03 datasheet, STS05DTP03 pinout, STS05DTP03 application, or STS05DTP03 equivalent, key selection criteria include complementary NPN/PNP pairing in a single SO-8, low saturation voltage under high-current switching, thermal derating in dual-operation mode, and suitability for discrete gate-driver stages requiring matched gain and timing symmetry.
Technical Context
The STS05DTP03 integrates two monolithically isolated bipolar transistors - Q1 (NPN) and Q2 (PNP) - on a single die with electrically separated terminals, enabling true complementary switching without cross-conduction risk. Its SO-8 dual-island layout supports independent thermal and electrical routing for each transistor.
It operates with VCEO = ±30 V, IC = ±5 A, and junction temperature up to 150 °C. Thermal resistance rises from 62.5 °C/W (single operation) to 78 °C/W (coupled operation), reflecting shared substrate heating effects during simultaneous conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | ±30 V - Supports rail-to-rail switching across 24 V industrial bus systems without breakdown. |
| IC (continuous) | ±5 A - Sustains full-load current for driving medium-power MOSFET gates or small solenoids directly. |
| VCE(sat) @ 1 A | 0.25 V (NPN), –0.25 V (PNP) - Minimizes conduction loss and self-heating in high-duty-cycle totem-pole outputs. |
| hFE @ 1 A | ≥100 - Ensures sufficient base drive margin with standard microcontroller GPIO or logic-level drivers. |
| PTOT (dual op.) | 1.6 W - Defines maximum combined dissipation when both transistors switch synchronously on PCB copper area ≥1 inch². |
| Rthj-amb | 78 °C/W - Requires thermal pad design and airflow planning for ambient >60 °C operation. |
Pinout & Package
STS05DTP03 uses an SO-8 package with dual-island construction: pins 1–4 serve Q1 (NPN), pins 5–8 serve Q2 (PNP), with physically separated emitter/collector pads to prevent latch-up and enable independent layout routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Q1 C) | NPN collector | Main current sink node; routed to load or MOSFET gate pull-down path. |
| 2 (Q1 B) | NPN base | Logic-level input; requires ~10 mA drive for full saturation at 5 A. |
| 3 (Q1 E) | NPN emitter | Common emitter reference for Q1; tied to ground or low-side return path. |
| 4 (NC) | No connect | Thermally isolated pad; not bonded - must remain unconnected per datasheet. |
| 5 (Q2 C) | PNP collector | Main current source node; connected to supply rail or MOSFET gate pull-up path. |
| 6 (Q2 B) | PNP base | Inverted logic input; driven low to turn on; compatible with open-drain controllers. |
| 7 (Q2 E) | PNP emitter | Common emitter reference for Q2; tied to VCC or high-side supply rail. |
| 8 (NC) | No connect | Thermally isolated pad; not bonded - must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary NPN-PNP pairing | Matched VCE(sat), hFE, and switching times enable symmetrical totem-pole output with minimal shoot-through risk. |
| Dual-island SO-8 layout | Electrically isolated collector/emitter pads allow independent thermal management and PCB trace routing for each transistor. |
| Low VCE(sat) at high current | 0.25 V at 1 A/10 mA ensures <125 mW conduction loss per transistor - critical for thermally constrained gate drivers. |
| High DC current gain | hFE ≥100 at 1 A enables direct drive from 3.3 V/5 V MCUs without external pre-driver stages. |
Applications
| Motor Driver Stage | MOSFET Gate Driver |
|---|---|
Use Scenario: Driving brushed DC motors in industrial actuators with PWM-controlled H-bridge half-bridge outputs. IC Role / Device Role / Timing Role: Acts as discrete totem-pole output stage replacing integrated driver ICs; provides fast turn-on/turn-off of external power MOSFETs. Use Value: Enables precise dead-time control and reduces gate-drive loop inductance by locating transistors adjacent to MOSFETs. | Use Scenario: Level-shifting and amplifying MCU GPIO signals to fully enhance/deplete power MOSFETs in SMPS half-bridge topologies. IC Role / Device Role / Timing Role: Functions as complementary emitter-follower buffer with matched rise/fall characteristics. Use Value: Delivers ±5 A peak gate current with <100 ns propagation delay asymmetry - minimizing cross-conduction losses. |
| IGBT Gate Driver | Relay/Solenoid Interface |
Use Scenario: Driving the gate of 600 V IGBTs in motor inverters where isolation and high dV/dt immunity are required. IC Role / Device Role / Timing Role: Provides robust, low-impedance push-pull current sourcing/sinking to charge/discharge IGBT Miller capacitance rapidly. Use Value: Reduces switching transition time by >40% vs. resistor-based gate drives, lowering IGBT switching losses. | Use Scenario: Directly energizing 24 V DC relays and solenoids in PLC I/O modules with overcurrent protection. IC Role / Device Role / Timing Role: Serves as high-current switch with built-in gain - replaces discrete transistor + base resistor combinations. Use Value: Eliminates 4–6 passive components per channel while maintaining 100% duty-cycle capability and thermal safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary bipolar transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STB120NF10L | Single N-channel MOSFET (100 V, 120 A); no PNP complement; requires external level-shifting for high-side drive. | Not suitable for totem-pole configuration without added circuitry; better for high-efficiency, low-frequency switching only. | Select only if replacing entire gate-driver topology with synchronous rectification and dedicated high-side drivers. |
| BC846BPDW1T1G | Small-signal dual NPN-PNP (100 mA max); 10× lower current rating; SO-8 but non-island layout. | Limited to signal-level interfacing; cannot sustain motor or relay loads. | Use only for logic buffering or low-power sensor interface - not for power switching. |
Compared with STB120NF10L and BC846BPDW1T1G, STS05DTP03 uniquely delivers matched high-current complementary bipolar switching in a thermally optimized SO-8 dual-island package - essential for discrete totem-pole gate drivers where gain, saturation voltage, and thermal independence are co-dependent design requirements.
Availability
STS05DTP03 is available at Aetrix Electronics and suitable for motor control, industrial relay interfaces, and MOSFET/IGBT gate-driving applications requiring stable component supply and long-term obsolescence management support.
Supply support for STS05DTP03 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for industrial, automotive, and consumer markets.
The STS05DTP03 belongs to ST's legacy power bipolar transistor family, engineered specifically for discrete high-current gate-driving and electromechanical actuation where complementary symmetry, thermal separation, and low saturation voltage are critical.
FAQ
Is STS05DTP03 still in active production?
No - STMicroelectronics has marked STS05DTP03 as obsolete per its official product status documentation dated March 2009. Aetrix Electronics maintains legacy inventory and offers extended lifecycle sourcing, including traceable batch data and engineering support for redesign evaluation.
Can STS05DTP03 be used in surface-mount reflow processes?
Yes - the SO-8 package is RoHS-compliant and qualified for standard lead-free reflow profiles (peak temperature ≤260 °C, 60-second duration). The dual-island thermal design requires careful stencil aperture sizing to avoid solder bridging between isolated pads.
What is the maximum safe operating frequency for STS05DTP03 in totem-pole mode?
Based on measured resistive-load switching times in the datasheet (Figures 6–7, 12–13), STS05DTP03 supports reliable operation up to 100 kHz with proper base drive and layout. Above this, Miller capacitance effects and thermal accumulation require derating or forced-air cooling.
Does STS05DTP03 require external base resistors?
Yes - base resistors are mandatory to limit IB to ≤1 A (absolute max) and ensure stable hFE-based biasing. Typical values range from 220 Ω (for 5 V MCU drive) to 470 Ω (for 3.3 V), selected using VBE(sat) = 1.0 V and target IB = IC / hFE(min).
STS05DTP03 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- 1 NPN, 1 PNP
- Current - Collector (Ic) (Max):
- 5A
- Voltage - Collector Emitter Breakdown (Max):
- 30V
- Vce Saturation (Max) @ Ib, Ic:
- 700mV @ 250mA, 5A
- Current - Collector Cutoff (Max):
- 1µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1A, 2V
- Power - Max:
- 2W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
STS05DTP03 FAQ
1.How can I place an order for STS05DTP03 through Aetrix?
Please submit a Request for Quotation (RFQ) for STS05DTP03 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 STS05DTP03 reliable?
The price and inventory of STS05DTP03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STS05DTP03 is usually 5 days.
3.What payment methods are accepted for STS05DTP03?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STS05DTP03 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STS05DTP03?
STS05DTP03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STS05DTP03 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 STS05DTP03?
For technical support, including STS05DTP03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STS05DTP03 requirements.
6.How does Aetrix verify that STS05DTP03 is sourced from the original manufacturer or authorized distributors?
All STS05DTP03 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 STS05DTP03 meets industry standards.
7.What is the process for return or replacement of STS05DTP03?
All STS05DTP03 units undergo pre-shipment inspection (PSI). If there is an issue with STS05DTP03, 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 STS05DTP03 part is unused and in its original packaging.
Return procedure for STS05DTP03:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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