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Diodes Incorporated DST3906DJ-7
- Part No.:
- DST3906DJ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- SOT-963
- Datasheet:
-
DST3906DJ-7.pdf
- Description:
- TRANS 2PNP 40V 200MA SOT-963
- Quantity:
- Payment:
- Shipping:
Inventory:3,202
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Product details
Overview
DST3906DJ-7 from Diodes Incorporated is a dual PNP bipolar junction transistor in ultra-small SOT963 package, rated for -40V VCEO, -200mA IC, and 300mW power dissipation. It features epitaxial planar die construction, matte tin–annealed terminals, and is optimized for high-density automated assembly in low-power switching and signal amplification circuits.
For engineers reviewing the DST3906DJ-7 datasheet, DST3906DJ-7 pinout, DST3906DJ-7 application, or DST3906DJ-7 equivalent, key selection criteria include its dual PNP configuration, -40V breakdown rating, low VCE(SAT) of -0.25V at -10mA/-1mA, thermal resistance of 417°C/W on FR-4, and RoHS-compliant green packaging.
Technical Context
The DST3906DJ-7 integrates two matched PNP transistors in a single 6-pin SOT963 package with shared emitter configuration per device (pins 1–2–3 and 4–5–6). Its design supports low-voltage, low-current switching with hFE ranging 60–300 across -100µA to -100mA IC, and fT = 300MHz at -20V VCE, -10mA IC.
Thermal performance is defined by RθJA = 417°C/W (FR-4, min pad layout) and transient capability up to 1W peak for 100µs pulses. ESD robustness includes 4kV HBM and 400V MM ratings, supporting handling in standard manufacturing environments without special precautions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -40V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter mode. |
| IC (max) | -200mA - Continuous DC collector current limit per transistor; defines maximum load drive capability. |
| PD | 300mW - Steady-state power dissipation on FR-4 PCB with minimum recommended pad layout. |
| VCE(SAT) | -0.25V @ -10mA/-1mA - Low saturation voltage enables efficient switching in battery-powered logic interfaces. |
| hFE | 60–300 - DC current gain range across operating currents; supports stable biasing from microamp to milliamp levels. |
| fT | 300MHz - Unity-gain frequency confirms suitability for RF preamplifier and high-speed digital switching up to ~100MHz. |
| RθJA | 417°C/W - Thermal resistance determines junction temperature rise under load; requires thermal-aware PCB layout. |
Pinout & Package
Package: SOT963 - ultra-compact 6-pin surface-mount package (1.0 × 1.0 × 0.45 mm), molded green plastic, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (Transistor 1) | Common emitter terminal for first PNP; connects to reference rail or ground in sink-switching configurations. |
| 2 | Base (Transistor 1) | Control input for first transistor; requires negative bias relative to emitter to turn on. |
| 3 | Collector (Transistor 1) | Output node for first transistor; sinks current when active; connected to load supply rail. |
| 4 | Emitter (Transistor 2) | Emitter for second independent PNP; electrically isolated from Pin 1; enables dual-channel operation. |
| 5 | Base (Transistor 2) | Independent control input; allows asynchronous switching of second transistor without crosstalk. |
| 6 | Collector (Transistor 2) | Second output node; supports redundant or complementary signal paths in compact space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual PNP topology | Two fully isolated transistors in one SOT963 footprint-reduces board area by >40% vs. discrete SOT23 solutions. |
| Green, halogen-free construction | <900ppm Br/Cl, <1000ppm Sb-meets global environmental compliance (RoHS 2, JEDEC J-STD-020 Level 1). |
| Low VCE(SAT) | -0.25V at -10mA/-1mA-minimizes conduction loss in 3.3V/5V logic-level switching applications. |
| High fT | 300MHz-supports fast edge rates in pulse generation, LED dimming, and small-signal amplification. |
| Matte tin–annealed leads | Solderable per MIL-STD-202 Method 208-ensures reliable reflow and wave solder joint integrity. |
Applications
| LED Driver Circuit | Level-Shifting Interface |
|---|---|
Use Scenario: Driving multiple low-current indicator LEDs from a 3.3V microcontroller GPIO with active-low control. IC Role / Device Role / Timing Role: PNP switch sinking current from VCC through LED to GPIO pin; operates in saturation region for minimal voltage drop. Use Value: Dual configuration allows simultaneous control of two independent LED strings using one compact device, reducing BOM count and routing complexity. | Use Scenario: Translating 1.8V logic outputs to 5V-tolerant inputs in mixed-voltage MCU systems. IC Role / Device Role / Timing Role: PNP-based level shifter with base driven by low-voltage signal; collector pulled to 5V, emitter outputs shifted level. Use Value: Enables bidirectional or unidirectional translation without external pull-ups; VCE(SAT) ≤ -0.4V ensures clean high-level output at 5V rail. |
| Load Switch for Sensor Bias | Current Mirror Reference |
Use Scenario: Enabling/disabling bias current to analog sensors (e.g., thermistors, photodiodes) during sleep cycles. IC Role / Device Role / Timing Role: High-side switch controlling sensor supply path; emitter tied to VBAT, collector feeds sensor network. Use Value: Low leakage ICEX ≤ -50nA preserves battery life in always-on monitoring nodes; dual structure supports separate enable for two sensor groups. | Use Scenario: Building matched current mirror pairs for precision analog front-ends in data acquisition ICs. IC Role / Device Role / Timing Role: Two transistors sharing identical process, temperature, and layout-enabling <1% current ratio mismatch at matched IC. Use Value: Monolithic matching eliminates inter-device variation; hFE consistency across -1mA to -10mA supports stable mirroring over wide dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3026LSD-13 | Single N-channel MOSFET (not bipolar); 30V VDS, 3.2A ID; gate-driven, no base current required. | Replaces PNP function only in low-side switching; cannot replicate high-side PNP sink topology without level-shifting circuitry. | Select only if redesign permits low-side load placement and gate drive availability; not drop-in compatible. |
| BC807-40DW-7 | Pin-compatible dual PNP in SOT363; same VCEO (-45V), higher IC (-500mA), larger package (2.1 × 1.25 mm). | Higher current capacity suits motor drivers or relay coils; larger footprint increases board area by ~2.5×. | Choose when higher current or legacy SOT363 compatibility is prioritized over miniaturization. |
Compared with BC807-40DW-7, DST3906DJ-7 saves >60% board area while maintaining matching performance at ≤200mA loads; versus DMN3026LSD-13, it retains native high-side switching capability without added gate-drive complexity.
Availability
DST3906DJ-7 is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, sensor bias load switches, and current mirror references requiring stable component supply and high-volume manufacturability.
Supply support for DST3906DJ-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 DST3906DJ belongs to Diodes' general-purpose bipolar transistor product line, engineered for space-constrained, cost-sensitive applications in consumer, computing, and industrial electronics where reliability, green compliance, and automated assembly compatibility are critical.
FAQ
What is the maximum operating temperature for DST3906DJ-7?
The DST3906DJ-7 has an operating junction temperature range of -55°C to +150°C, with storage temperature matching that span. Derated power dissipation begins above +25°C ambient, reaching zero at +150°C per Fig. 3 in the datasheet; thermal design must respect RθJA = 417°C/W on standard FR-4.
Is DST3906DJ-7 suitable for linear amplification?
Yes-the device specifies hFE across five current points (-100µA to -100mA) and provides hie = 2–12kΩ and hfe = 100–400, confirming usable small-signal gain. However, its primary qualification targets switching; for precision analog use, verify linearity and distortion at target bias points via characterization.
Does DST3906DJ-7 have built-in ESD protection?
The DST3906DJ-7 is rated for 4kV HBM and 400V MM ESD per JEDEC JESD22-A114/A115. These values reflect inherent junction robustness-not discrete on-chip protection diodes-so external clamping remains advisable in high-noise environments like industrial I/O ports.
Can DST3906DJ-7 replace a single SOT23 PNP transistor?
No-it contains two independent PNP transistors in one package and cannot be used as a direct replacement for a single-transistor SOT23 part without circuit modification. Its pinout (6-pin SOT963) is incompatible with 3-pin SOT23 footprints; redesign is required to utilize both transistors or isolate one channel.
DST3906DJ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-963
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 PNP (Dual)
- Current - Collector (Ic) (Max):
- 200mA
- Voltage - Collector Emitter Breakdown (Max):
- 40V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- 300mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-963
DST3906DJ-7 FAQ
1.How can I place an order for DST3906DJ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DST3906DJ-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 DST3906DJ-7 reliable?
The price and inventory of DST3906DJ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DST3906DJ-7 is usually 5 days.
3.What payment methods are accepted for DST3906DJ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DST3906DJ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DST3906DJ-7?
DST3906DJ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DST3906DJ-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 DST3906DJ-7?
For technical support, including DST3906DJ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DST3906DJ-7 requirements.
6.How does Aetrix verify that DST3906DJ-7 is sourced from the original manufacturer or authorized distributors?
All DST3906DJ-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 DST3906DJ-7 meets industry standards.
7.What is the process for return or replacement of DST3906DJ-7?
All DST3906DJ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DST3906DJ-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 DST3906DJ-7 part is unused and in its original packaging.
Return procedure for DST3906DJ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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