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Diodes Incorporated DDTC144EE-7-F
- Part No.:
- DDTC144EE-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTC144EE-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:5,062
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Product details
Overview
DDTC144EE-7-F from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated bias resistors R1 = R2 = 47 kΩ, designed for digital switching and level translation in low-power logic interfaces. It delivers VO(on) ≤ 0.3 V at IO = 2 mA, supports VI(on) ≥ 1.9 V (typ), and operates across –55°C to +150°C for automotive and industrial control applications.
For engineers reviewing the DDTC144EE-7-F datasheet, DDTC144EE-7-F pinout, DDTC144EE-7-F application, or DDTC144EE-7-F equivalent, key selection criteria include input resistor tolerance (±30%), DC current gain (68 typ), output saturation voltage, thermal resistance (833 °C/W), and compatibility with 3.3 V/5 V logic families in space-constrained PCB layouts.
Technical Context
This device integrates two matched 47 kΩ bias resistors (R1 = R2) to configure a single-NPN transistor as a self-contained digital switch. Its internal schematic implements an inverter function where base drive is derived directly from the input terminal, eliminating external bias components.
It operates with guaranteed turn-on at VI ≥ 3 V and turn-off at VI ≤ 0.5 V under specified test conditions, and maintains stable DC current gain (Gl = 68 typ) at VO = 5 V and IO = 5 mA - enabling predictable switching behavior in discrete logic buffer and interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1, R2 Nominal Value | 47 kΩ - sets base current for predictable saturation at defined input voltage levels |
| VO(on) Max | 0.3 V at IO = 2 mA - ensures low-loss output stage compatible with 3.3 V CMOS/TTL logic thresholds |
| VI(on) Typ | 1.9 V - guarantees reliable turn-on with standard 3.3 V logic high signals |
| Gl (DC Current Gain) | 68 typ at VO = 5 V, IO = 5 mA - provides sufficient current amplification for driving small-signal loads |
| PD Max | 150 mW - defines maximum continuous power handling on FR-4 board with minimum pad layout |
| RθJA | 833 °C/W - indicates thermal limitation requiring careful layout or derating above 25°C ambient |
| fT | 250 MHz - supports high-speed switching up to ~10–20 MHz in practical digital applications |
Pinout & Package
SOT523 is a 3-pin ultra-small surface-mount plastic package (1.60 mm × 1.60 mm × 0.75 mm), rated for moisture sensitivity Level 1 per J-STD-020 and compliant with UL 94V-0 flammability standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter connection | Common reference node for input and output paths; tied to ground in inverter configuration |
| 2 (Collector) | Output collector | Active output terminal delivering inverted logic signal; sinks current when transistor is ON |
| 3 (Base) | Input-controlled base node | Internally connected via R1/R2 network to Pin 1 and Pin 2; accepts logic-level input voltage |
Key Features
| Feature | Design Value |
|---|---|
| Built-in matched bias resistors | R1 = R2 = 47 kΩ ±30% - eliminates external bias components and reduces BOM count in logic interface designs |
| Thermal performance | RθJA = 833 °C/W - enables operation up to +150°C junction temperature with appropriate PCB copper area |
| Automotive qualification readiness | AEC-Q101 capable - supports PPAP and IATF 16949 manufacturing for automotive-grade reliability |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets RoHS 3 and environmental directives without performance trade-offs |
Applications
| Logic Level Translation | Microcontroller GPIO Buffer |
|---|---|
Use Scenario: Converting 1.8 V or 3.3 V logic outputs to drive 5 V-tolerant inputs in mixed-voltage systems. IC Role / Device Role / Timing Role: Digital inverter switch with fixed bias network enabling rail-to-rail logic inversion without external resistors. Use Value: Reduces component count by replacing discrete transistor + two bias resistors with one SOT523 device while maintaining VI(on)/VI(off) thresholds. | Use Scenario: Isolating and strengthening weak microcontroller I/O pins driving LEDs, relays, or small solenoids. IC Role / Device Role / Timing Role: Low-side switch controlled directly by MCU GPIO, leveraging built-in base resistors for safe current limiting. Use Value: Prevents GPIO overcurrent damage and simplifies firmware design by eliminating need for external base resistor calculation. |
| Automotive Body Control Module | Industrial Sensor Interface |
Use Scenario: Driving status indicators (e.g., door-open LEDs) and small actuators in vehicle interior modules. IC Role / Device Role / Timing Role: AEC-Q101-ready NPN switch operating across –40°C to +125°C ambient with stable Gl and VO(on). Use Value: Ensures long-term reliability in thermally cycling environments without derating penalties up to 100°C ambient. | Use Scenario: Interfacing analog sensor enable lines or digital fault-reporting outputs to PLC input cards. IC Role / Device Role / Timing Role: Signal conditioner and level shifter between low-voltage sensor ICs and 24 V industrial logic rails. Use Value: Provides galvanic isolation-like functionality via voltage translation while maintaining fast turn-on (<100 ns typical propagation delay implied by fT). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDTC124EE-7-F | R1 = R2 = 22 kΩ - lower input resistance yields higher base current and faster switching but reduced input impedance | Better suited for 5 V logic with tighter VI(on) margin; less ideal for 3.3 V-only systems due to higher VI(off) risk | Select when driving heavier loads (>5 mA) or requiring faster edge rates at expense of input loading |
| NSV12201MW6T1G | R1 = 22 kΩ, R2 = 47 kΩ - asymmetric bias network optimized for improved noise immunity and sharper transition | Designed specifically for automotive CAN/LIN bus wake-up detection; includes enhanced ESD protection (HBM >8 kV) | Prefer for safety-critical or noisy environments where input transient robustness outweighs cost and footprint advantages |
Compared with DDTC124EE-7-F and NSV12201MW6T1G, DDTC144EE-7-F offers highest input impedance among common pre-biased NPNs, minimizing source loading in battery-powered or high-impedance logic interfaces while maintaining full AEC-Q101 readiness and industry-standard SOT523 footprint.
Availability
DDTC144EE-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and microcontroller-based IoT edge nodes requiring stable component supply and long-lifecycle support.
Supply support for DDTC144EE-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 components for automotive, industrial, and computing markets.
This device belongs to the DDTC(R1=R2) EE series of pre-biased transistors engineered for simplified digital switching in space-constrained, high-volume applications where BOM reduction and thermal robustness are critical.
FAQ
What is the maximum continuous collector current for DDTC144EE-7-F?
The absolute maximum rated output current is 100 mA, but the recommended maximum continuous output current is 2 mA per the Electrical Characteristics table - this reflects the device's optimized operating point for stable VO(on) ≤ 0.3 V and Gl = 68 at VO = 5 V. Exceeding 2 mA requires verification of thermal derating and saturation voltage under actual board conditions.
Can DDTC144EE-7-F be used in 1.8 V logic systems?
Yes - its VI(on) typ = 1.9 V and VI(off) max = 1.1 V allow reliable operation with 1.8 V logic high signals when combined with appropriate noise margin analysis. However, system-level validation is required since VI(on) min is not specified, and performance depends on load conditions and ambient temperature.
Is the SOT523 package lead-free and RoHS-compliant?
Yes - DDTC144EE-7-F uses matte tin-plated leads and fully complies with EU RoHS Directive 2015/863/EU (RoHS 3), contains no intentionally added lead, and meets halogen- and antimony-free "Green" definitions (<900 ppm Br/Cl, <1000 ppm Sb), verified per Diodes Incorporated's quality documentation.
How does the R1 = R2 architecture affect switching behavior?
The matched 47 kΩ resistors create a symmetric bias network that fixes the base-emitter and base-collector voltage dividers, resulting in consistent VI(on)/VI(off) thresholds and predictable DC current gain. This eliminates variability from external resistor tolerances and improves batch-to-batch consistency in high-volume manufacturing.
DDTC144EE-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 150 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
DDTC144EE-7-F FAQ
1.How can I place an order for DDTC144EE-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC144EE-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 DDTC144EE-7-F reliable?
The price and inventory of DDTC144EE-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 DDTC144EE-7-F is usually 5 days.
3.What payment methods are accepted for DDTC144EE-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC144EE-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC144EE-7-F?
DDTC144EE-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC144EE-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 DDTC144EE-7-F?
For technical support, including DDTC144EE-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC144EE-7-F requirements.
6.How does Aetrix verify that DDTC144EE-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC144EE-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 DDTC144EE-7-F meets industry standards.
7.What is the process for return or replacement of DDTC144EE-7-F?
All DDTC144EE-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC144EE-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 DDTC144EE-7-F part is unused and in its original packaging.
Return procedure for DDTC144EE-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC144EE-7-F Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
Rohm Semiconductor
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DDTD113ZC-7-F
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DRDNB16W-7
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ZT,215
Nexperia USA Inc.
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PDTC143ET,215
Nexperia USA Inc.
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PDTC143XT,215
Nexperia USA Inc.
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MMUN2211LT1G
onsemi
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PDTC144ET,215
Nexperia USA Inc.
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PDTC124ET,215
Nexperia USA Inc.
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