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Diodes Incorporated DDTA114TUA-7-F
- Part No.:
- DDTA114TUA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
DDTA114TUA-7-F.pdf
- Description:
- TRANS PREBIAS PNP 50V SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DDTA114TUA-7-F from Diodes Incorporated is a PNP pre-biased transistor in SOT323 package with single built-in bias resistor R1 = 10 kΩ, VCEO = −50 V, IC(max) = −100 mA, VCE(sat) = −0.3 V at IC/IB = −5 mA/−0.5 mA, and hFE = 100–600. It serves as a compact, RoHS-compliant switching element in low-power digital interface circuits.
For engineers reviewing the DDTA114TUA-7-F datasheet, DDTA114TUA-7-F pinout, DDTA114TUA-7-F application, or DDTA114TUA-7-F equivalent, key selection criteria include verified R1 tolerance (±30%), guaranteed VCE(sat) under defined drive conditions, hFE range at IC = −1 mA, thermal derating curve compliance, and SOT323 footprint compatibility with high-density PCB layouts.
Technical Context
This device integrates a single base-emitter pull-up resistor (R1 only, no R2), enabling simplified NPN/PNP logic-level translation and active-low switch control without external bias components. Its epitaxial planar construction ensures stable gain and low leakage across −55°C to +150°C operating range.
Designed for DC-coupled switching-not linear amplification-it delivers predictable saturation behavior with fixed IB/IC ratios, supporting reliable on/off operation in microcontroller GPIO-driven loads such as LED indicators, small-signal relays, and level-shifting buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum allowable collector-to-emitter voltage before breakdown; defines safe operating window for 3.3 V/5 V logic-controlled loads. |
| IC(max) | −100 mA: Absolute maximum continuous collector current; sets upper limit for driving LEDs or small solenoids directly. |
| VCE(sat) | −0.3 V @ IC/IB = −5 mA/−0.5 mA: Confirmed low saturation voltage ensures minimal power loss and heat generation during conduction. |
| hFE | 100–600 @ IC = −1 mA, VCE = −5 V: Wide DC current gain range supports robust turn-on margin across process and temperature variation. |
| R1 | 10 kΩ ±30%: Single integrated base bias resistor enables direct connection to logic outputs without external components. |
| PD | 200 mW @ TA = +25°C: Power dissipation limit governs thermal design when mounted on FR4 with minimum pad layout. |
Pinout & Package
SOT323 three-terminal surface-mount package: ultra-compact (2.15 mm × 2.10 mm × 0.95 mm), lead-free, halogen-free, moisture sensitivity level 1, and UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Connected to higher potential in PNP configuration; provides current return path for switched load. |
| 2 (Base) | Base terminal with internal R1 | Internally connected to emitter via 10 kΩ resistor; accepts logic-low signal to activate conduction. |
| 3 (Collector) | Collector terminal | Output node tied to load; sinks current when base is pulled low relative to emitter. |
Key Features
| Feature | Design Value |
|---|---|
| Single integrated bias resistor (R1 only) | Eliminates need for external base resistor in simple switching configurations, reducing BOM count and layout area. |
| Epitaxial planar die construction | Ensures consistent hFE, low leakage (ICBO, IEBO ≤ −0.5 μA), and stable performance over full temperature range. |
| RoHS 3 & "Green" compliant | Meets EU Directive 2015/863/EU with Br+Cl < 1500 ppm and Sb < 1000 ppm-required for automotive and industrial end-equipment. |
| SOT323 footprint | Standardized 3-pin package compatible with automated pick-and-place and reflow processes; supports high-density board designs. |
Applications
| LED Indicator Driver | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving status LEDs from 3.3 V or 5 V microcontroller outputs with active-low logic. IC Role / Device Role / Timing Role: PNP switch that sinks current from LED anode to ground when base is pulled low. Use Value: Eliminates external base resistor; VCE(sat) ≤ −0.3 V ensures >90% LED forward voltage utilization at 5 mA drive. | Use Scenario: Level translation between 1.8 V logic and 5 V peripheral enable lines. IC Role / Device Role / Timing Role: Active-low buffer isolating low-voltage MCU pins from higher-voltage subsystems. Use Value: Guaranteed hFE ≥ 100 at IC = −1 mA ensures reliable turn-on even with weak GPIO drive strength. |
| Small-Signal Relay Control | Power Rail Enable Switch |
Use Scenario: Controlling coil current of sub-100 mA signal relays in industrial I/O modules. IC Role / Device Role / Timing Role: Low-side switch replacing discrete BJT + resistor pair in relay driver stage. Use Value: IC(max) = −100 mA and −50 V VCEO support common 5 V/12 V relay coils with safety margin. | Use Scenario: Enabling/disabling auxiliary 3.3 V or 5 V power rails in portable electronics. IC Role / Device Role / Timing Role: High-side switch (emitter-connected to rail, collector to load) for controlled power sequencing. Use Value: R1 = 10 kΩ provides appropriate base current for fast, low-loss turn-on while limiting quiescent draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTA114YKA-7 | Same R1 = 10 kΩ, but SOT23 package (larger footprint, higher RθJA = 500°C/W vs. 625°C/W) | Less suitable for ultra-dense layouts; better thermal performance per watt due to larger copper exposure. | Select when board space allows and thermal margin is prioritized over miniaturization. |
| NSV114T1T1G | Identical R1 = 10 kΩ, same SOT323, but hFE min = 80 (vs. 100) and VCE(sat) max = −0.4 V (vs. −0.3 V) | Marginally lower gain and higher saturation voltage may require validation in low-IB drive scenarios. | Acceptable where cost sensitivity outweighs marginal hFE/VCE(sat) trade-offs; verify with actual load conditions. |
Compared with DDTA114TUA-7-F, DDTA114YKA-7 offers improved thermal resistance but occupies more PCB area, while NSV114T1T1G matches footprint and bias value but has reduced DC gain and higher saturation voltage-both require case-specific validation for critical switching timing or power efficiency.
Availability
DDTA114TUA-7-F is available at Aetrix Electronics and suitable for LED indicator drivers, microcontroller GPIO interfaces, small-signal relay control, and power rail enable switches requiring stable component supply and AEC-Q200-aligned manufacturing.
Supply support for DDTA114TUA-7-F 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, specializing in high-reliability, industry-qualified components for automotive, industrial, and consumer markets.
This part belongs to the DDTA R1-only pre-biased transistor product line, engineered to reduce design complexity in digital switching applications by integrating precise biasing resistors into miniature packages.
FAQ
What is the function of the internal resistor R1 in DDTA114TUA-7-F?
R1 is a 10 kΩ resistor connecting the base to the emitter internally. It provides automatic base biasing so that applying a logic-low signal to the base (relative to emitter) turns the transistor fully on. This eliminates the need for an external pull-up or pull-down resistor in standard switching configurations, simplifying circuit design and saving board space.
Can DDTA114TUA-7-F be used in linear amplifier applications?
No-this device is optimized for switching operation, not linear amplification. Its datasheet specifies parameters like VCE(sat) and hFE under switching conditions (e.g., IC/IB = −5 mA/−0.5 mA), and lacks linearity, frequency response, or distortion specifications required for analog gain stages. Use standard general-purpose transistors for amplification.
Is DDTA114TUA-7-F qualified for automotive use?
The DDTA114TUA-7-F itself is not AEC-Q101 qualified, but Diodes offers automotive-grade variants (e.g., DDTA114TUAQ-7) with PPAP documentation, IATF 16949 manufacturing, and AEC-Q101 stress testing. For non-automotive industrial or consumer applications, this standard version meets RoHS 3, halogen-free, and green requirements.
How does the SOT323 package affect thermal performance?
The SOT323 package has a thermal resistance of RθJA = 625°C/W on FR4 with minimum recommended pads. At 200 mW maximum power dissipation, junction temperature rise can reach 125°C above ambient-so operation near maximum ratings requires careful thermal layout (e.g., added copper pour, reduced ambient temperature). Derating is mandatory above +25°C ambient per Figure 1.
DDTA114TUA-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 10 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 100µA, 1mA
- Current - Collector Cutoff (Max):
- 500nA (ICBO)
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
DDTA114TUA-7-F FAQ
1.How can I place an order for DDTA114TUA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTA114TUA-7-F 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 DDTA114TUA-7-F reliable?
The price and inventory of DDTA114TUA-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTA114TUA-7-F is usually 5 days.
3.What payment methods are accepted for DDTA114TUA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTA114TUA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTA114TUA-7-F?
DDTA114TUA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTA114TUA-7-F 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 DDTA114TUA-7-F?
For technical support, including DDTA114TUA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTA114TUA-7-F requirements.
6.How does Aetrix verify that DDTA114TUA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTA114TUA-7-F 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 DDTA114TUA-7-F meets industry standards.
7.What is the process for return or replacement of DDTA114TUA-7-F?
All DDTA114TUA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTA114TUA-7-F, 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 DDTA114TUA-7-F part is unused and in its original packaging.
Return procedure for DDTA114TUA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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