My Inquiry
My Account
Diodes Incorporated DDTC123EE-7
- Part No.:
- DDTC123EE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTC123EE-7.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDTC123EE-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated 2.2 kΩ bias resistors (R1 = R2), designed for digital switching and level translation in low-power logic interfaces. It delivers 100 mA output current, 0.3 V saturation voltage at 20 mA, and operates across –55°C to +150°C for automotive and industrial control applications.
For engineers reviewing the DDTC123EE-7 datasheet, DDTC123EE-7 pinout, DDTC123EE-7 application, or DDTC123EE-7 equivalent, key selection criteria include input threshold voltage (VI(on) ≤ 3 V), low-output saturation (VO(on) ≤ 0.3 V), DC current gain (GI ≥ 20), thermal resistance (RθJA = 833 °C/W), and AEC-Q101 qualification readiness.
Technical Context
This device integrates a single NPN transistor with matched on-chip base bias resistors (R1 = R2 = 2.2 kΩ), eliminating external components for clean digital input-to-collector switching. Its internal resistor ratio tolerance (0.8–1.2%) ensures consistent turn-on behavior across temperature.
The SOT523 package enables high-density PCB layouts while maintaining 150 mW power dissipation capability under FR-4 mounting conditions. Transition frequency fT = 250 MHz supports fast edge response in signal routing and GPIO buffering applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1, R2 Nominal Value | 2.2 kΩ - Enables direct TTL/CMOS-level input drive without external bias network |
| VO(on) | ≤ 0.3 V at IO = 20 mA - Ensures low-loss switching in 3.3 V and 5 V logic systems |
| IO (Max) | 100 mA - Supports driving small relays, LEDs, or MOSFET gates in compact control circuits |
| GI (DC Current Gain) | ≥ 20 at VCE = 5 V, IC = 20 mA - Guarantees reliable saturation with modest base current |
| VI(on) | ≤ 3 V - Confirms robust turn-on with standard microcontroller GPIO outputs |
| PD | 150 mW - Limits thermal rise in space-constrained SOT523 footprint |
| fT | 250 MHz - Supports signal integrity in sub-100 ns switching applications |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic case (1.60 mm × 1.60 mm × 0.75 mm), moisture sensitivity level 1, matte tin-plated leads, weight ≈ 0.002 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Input reference / GND node | Connected internally to ground via R2; serves as common return for bias network |
| 2 (Collector) | Switched output terminal | Drives load between VCC and this pin; rated for 50 V and 100 mA continuous |
| 3 (Base) | Control input node | Receives logic-level signal; internally biased through R1 to enable transistor conduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1 = R2 bias network | 2.2 kΩ ±30% - Reduces BOM count and layout area vs. discrete transistor + two resistors |
| Low VCE(sat) | ≤ 0.3 V at IC/IB = 20 - Minimizes power loss and heat generation in always-on control paths |
| AEC-Q101 readiness | Qualified per AEC-Q101 requirements - Validated for automotive-grade reliability and PPAP support |
| Green compound & RoHS compliance | Halogen- and antimony-free, <900 ppm Br/Cl, <1000 ppm Sb - Meets global environmental regulations |
| High-temperature operation | –55°C to +150°C junction range - Suitable for under-hood and industrial ambient environments |
Applications
| Automotive Door Module Control | Industrial PLC Input Buffering |
|---|---|
Use Scenario: Driving window lift motor enable signals from MCU GPIOs in door control units. IC Role / Device Role / Timing Role: Digital switch translating 3.3 V logic to 12 V load interface with current limiting. Use Value: Eliminates need for external base resistors and reduces PCB area by >30% versus discrete solution. |
Use Scenario: Isolating and conditioning 24 V sensor inputs before feeding into PLC logic controllers. IC Role / Device Role / Timing Role: Level-shifting and current-limiting interface between field sensors and microcontroller inputs. Use Value: Provides predictable 0.3 V saturation and 100 mA drive margin under wide temperature variation. |
| Consumer Appliance Motor Driver Stage | Medical Diagnostic Equipment Signal Routing |
Use Scenario: Enabling small BLDC fan drivers in smart HVAC systems using 5 V MCU outputs. IC Role / Device Role / Timing Role: High-speed switching element controlling gate drive enable path for external MOSFETs. Use Value: 250 MHz fT ensures minimal propagation delay (<10 ns) in critical timing paths. |
Use Scenario: Routing isolated status signals from patient monitoring sensors to central processing unit. IC Role / Device Role / Timing Role: Low-leakage (IO(off) ≤ 0.5 µA) digital isolator for safety-critical signal paths. Use Value: Maintains <0.5 µA off-state leakage at 50 V VCC, supporting IEC 60601 creepage requirements. |
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 |
|---|---|---|---|
| DDTC143EE-7-F | R1 = R2 = 4.7 kΩ; higher input impedance; VI(on) up to 30 V | Better suited for 12 V–24 V logic interfaces; lower base current draw | Select when interfacing with higher-voltage microcontrollers or open-drain drivers |
| NSV123EUXV6T1G | Same SOT-523 package; R1 = R2 = 2.2 kΩ; AEC-Q101 qualified; tighter R tolerance (±20%) | Higher production consistency for automotive Tier-1 programs requiring PPAP documentation | Choose for new automotive designs requiring certified change control and full traceability |
Compared with DDTC123EE-7, DDTC143EE-7-F offers higher input voltage tolerance but reduced drive strength, while NSV123EUXV6T1G provides tighter resistor matching and formal AEC-Q101 certification-making it preferable for safety-critical automotive deployments.
Availability
DDTC123EE-7 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input stages, and consumer appliance motor driver circuits requiring stable component supply and long-term lifecycle assurance.
Supply support for DDTC123EE-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, specializing in high-reliability components for automotive, industrial, and computing markets.
This part belongs to the DDTC (R1 = R2 Series) pre-biased transistor family, engineered specifically for simplified digital switching in space-constrained, thermally demanding applications where board area and assembly cost are critical.
FAQ
What is the maximum collector-emitter voltage rating for DDTC123EE-7?
The absolute maximum VCE rating is 50 V, verified in the Absolute Maximum Ratings table (DS30313 Rev. 16-2, page 2). This rating applies across the full operating temperature range (–55°C to +150°C) and defines the upper limit for safe DC voltage applied between collector and emitter terminals.
Does DDTC123EE-7 require external bias resistors?
No. The device integrates matched 2.2 kΩ base-emitter and base-resistor networks (R1 = R2), enabling direct connection of logic-level inputs to pin 3 (base) without external components. This configuration is confirmed in the schematic diagram and electrical characteristics section of DS30313.
Is DDTC123EE-7 qualified for automotive use?
While not pre-certified to AEC-Q101 in the base part number, DDTC123EE-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request. Diodes explicitly states that automotive-grade versions are available with specific change control-confirmable via direct engagement with their automotive sales team.
What is the thermal resistance (RθJA) of DDTC123EE-7 in standard FR-4 layout?
RθJA is 833 °C/W when mounted on an FR-4 PCB with minimum recommended pad layout, as specified in the Thermal Characteristics table (DS30313 Rev. 16-2, page 2). This value assumes no copper pour or thermal vias beyond the standard SOT523 footprint.
DDTC123EE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 2.2 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 20 @ 20mA, 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
DDTC123EE-7 FAQ
1.How can I place an order for DDTC123EE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC123EE-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 DDTC123EE-7 reliable?
The price and inventory of DDTC123EE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC123EE-7 is usually 5 days.
3.What payment methods are accepted for DDTC123EE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC123EE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC123EE-7?
DDTC123EE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC123EE-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 DDTC123EE-7?
For technical support, including DDTC123EE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC123EE-7 requirements.
6.How does Aetrix verify that DDTC123EE-7 is sourced from the original manufacturer or authorized distributors?
All DDTC123EE-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 DDTC123EE-7 meets industry standards.
7.What is the process for return or replacement of DDTC123EE-7?
All DDTC123EE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC123EE-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 DDTC123EE-7 part is unused and in its original packaging.
Return procedure for DDTC123EE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC123EE-7 Tags
-
MUN5211T1G
onsemi
-
DTC043ZEBTL
Rohm Semiconductor
-
DTC114EKAT146
Rohm Semiconductor
-
DDTD113ZC-7-F
Diodes Incorporated
-
DRDNB16W-7
Diodes Incorporated
-
PDTC114ET,215
Nexperia USA Inc.
-
PDTC143ZT,215
Nexperia USA Inc.
-
PDTC143ET,215
Nexperia USA Inc.
-
PDTC143XT,215
Nexperia USA Inc.
-
MMUN2211LT1G
onsemi
-
PDTC144ET,215
Nexperia USA Inc.
-
PDTC124ET,215
Nexperia USA Inc.
Tech Hub
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…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
