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Diodes Incorporated DDTC124XE-7-F
- Part No.:
- DDTC124XE-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
DDTC124XE-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:5
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Product details
Overview
DDTC124XE-7-F from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated R1=22kΩ and R2=47kΩ bias resistors, designed for digital switching applications requiring precise input threshold control. It delivers 50mA max output current, 150mW power dissipation, and operates across -55°C to +150°C, commonly used in automotive body control modules for LED driver enable logic.
For engineers reviewing the DDTC124XE-7-F datasheet, DDTC124XE-7-F pinout, DDTC124XE-7-F application, or DDTC124XE-7-F equivalent, key selection criteria include verified VI(on)=1.4V @ IO=2mA, VO(on)=0.3V @ IO=2mA, GI=68 at 5mA, R1/R2 ratio tolerance of ±20%, and AEC-Q101 qualification status for automotive use.
Technical Context
This device integrates a monolithic NPN transistor with two non-matching on-chip resistors (R1=22kΩ, R2=47kΩ), enabling direct TTL/CMOS-level interface without external bias components. Its internal resistor network configures it as a single-stage inverter with defined turn-on/off thresholds and guaranteed saturation under specified load conditions.
The SOT523 package supports high-density PCB layouts with thermal resistance RθJA=833°C/W on FR-4 board, and the device meets AEC-Q101 stress testing requirements for automotive electronics, including temperature cycling, HTRB, and ESD robustness per JESD22-A114.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R1 (Nominal) | 22kΩ - sets input current limit and defines VI(on) threshold |
| R2 (Nominal) | 47kΩ - provides base-emitter feedback path for stable saturation |
| VI(on) | 1.4V @ IO=2mA - ensures reliable turn-on with standard 1.8V/3.3V logic outputs |
| VO(on) | 0.3V @ IO=2mA - guarantees low saturation voltage for efficient switching |
| GI (DC Current Gain) | 68 @ VCE=5V, IO=5mA - enables predictable drive capability into moderate loads |
| Max Output Current | 50mA - supports driving small relays, LEDs, or logic inputs directly |
| Power Dissipation | 150mW - limits continuous operation to ≤100mA average load in ambient ≤+85°C |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 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 node | Connected to ground or logic low reference; forms common return for R2 and transistor emitter |
| 2 (Collector) | Switched output node | Drives load to VCC when transistor is saturated; open-collector compatible |
| 3 (Base) | Bias input node | Receives input signal through R1; internally connected to R2 and transistor base |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R1≠R2 bias network | Eliminates need for external resistors while ensuring precise VI(on)/VI(off) hysteresis |
| AEC-Q101 qualified | Validated for automotive under-hood and cabin applications per stress test requirements |
| Green, halogen-free construction | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500ppm and Sb <1000ppm |
| SOT523 footprint compatibility | Enables drop-in replacement for other pre-biased transistors in space-constrained designs |
| Guaranteed VO(on) ≤0.3V | Ensures minimal power loss and heat generation during active switching |
Applications
| Automotive Body Control Unit | Industrial PLC Input Module |
|---|---|
|
Use Scenario: Level-shifting and noise-immune signal conditioning for door lock actuator enable signals. IC Role / Device Role / Timing Role: Digital switch translating 3.3V microcontroller GPIO to 12V load control path. Use Value: Eliminates discrete resistor network, reduces BOM count by 2 components, and improves ESD immunity via integrated structure. |
Use Scenario: Isolating field sensor inputs (e.g., proximity switches) from 24V DC PLC backplane. IC Role / Device Role / Timing Role: Input stage translator converting industrial 24V logic to 3.3V/5V MCU-compatible levels. Use Value: Provides defined VI(on)=1.4V threshold and VI(off)=0.4V hysteresis, rejecting line noise up to ±1.0V. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Interface |
|
Use Scenario: Enabling sequential power-up of display backlight and motor drivers in smart washing machines. IC Role / Device Role / Timing Role: Logic-controlled enable gate for DC-DC converter enable pins. Use Value: Delivers consistent 50mA sink capability with VO(on) ≤0.3V, minimizing enable delay variation across temperature. |
Use Scenario: Interfacing isolated patient-monitoring sensor outputs to low-voltage analog front-end circuitry. IC Role / Device Role / Timing Role: Safe, low-leakage signal buffer between high-impedance sensor nodes and ADC input stages. Use Value: IO(off) ≤0.5μA at VCC=50V ensures negligible loading on sensitive biopotential sensors. |
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 |
|---|---|---|---|
| DDTC124YK-7-F | R1=22kΩ, R2=22kΩ (R1=R2); VI(on)=1.3V @ IO=2mA; GI=160 | Better for symmetric threshold applications; higher gain but less noise margin | Select when matched R1/R2 required for rail-to-rail logic translation |
| NSVD124XDTV6T1G | Same R1/R2 values; AEC-Q101 qualified; VO(on)=0.25V @ IO=2mA; PD=200mW | Higher power handling and lower saturation voltage; larger SOT-23-3 footprint | Choose when thermal margin is critical or SOT-23 layout already exists |
Compared with DDTC124XE-7-F, DDTC124YK-7-F offers higher current gain but reduced input hysteresis, while NSVD124XDTV6T1G provides superior thermal performance at the cost of board area-making the original optimal for space-constrained automotive modules needing balanced threshold behavior.
Availability
DDTC124XE-7-F is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC input modules, consumer appliance power sequencing, and medical diagnostic equipment interfaces requiring stable component supply and long-term lifecycle support.
Supply support for DDTC124XE-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This part belongs to the DDTC (R1≠R2 Series) pre-biased transistor family, engineered specifically for automotive and industrial digital switching where precise input threshold control and resistor ratio stability are critical.
FAQ
What is the maximum operating voltage for DDTC124XE-7-F?
The absolute maximum supply voltage (VCC) is 50V between collector and emitter. The input voltage (VIN) rating is -10V to +40V relative to emitter, validated per DS30314 Rev.10. Exceeding these limits risks permanent damage to the integrated resistors or transistor junction.
Is DDTC124XE-7-F qualified for automotive applications?
Yes-DDTC124XE-7-F is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. It undergoes stress testing including HTGB, HTRB, TCT, and ESD per JESD22 standards, making it suitable for under-hood and cabin systems requiring PPAP documentation.
How does the R1≠R2 configuration affect switching behavior?
The asymmetric resistor network (R1=22kΩ, R2=47kΩ) creates intentional hysteresis: VI(on)=1.4V and VI(off)=0.4V. This prevents oscillation near threshold and improves noise immunity compared to R1=R2 devices, especially in electrically noisy automotive environments.
Can DDTC124XE-7-F replace a discrete transistor + two resistors?
Yes-it replaces one NPN transistor and two external bias resistors in standard digital switch configurations. The integrated structure ensures matched temperature coefficients and eliminates placement errors, reducing assembly steps and improving reliability in high-volume production.
DDTC124XE-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- DDTC (R1 R2 SERIES) E
- 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):
- 22 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
DDTC124XE-7-F FAQ
1.How can I place an order for DDTC124XE-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC124XE-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 DDTC124XE-7-F reliable?
The price and inventory of DDTC124XE-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 DDTC124XE-7-F is usually 5 days.
3.What payment methods are accepted for DDTC124XE-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC124XE-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC124XE-7-F?
DDTC124XE-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC124XE-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 DDTC124XE-7-F?
For technical support, including DDTC124XE-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC124XE-7-F requirements.
6.How does Aetrix verify that DDTC124XE-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC124XE-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 DDTC124XE-7-F meets industry standards.
7.What is the process for return or replacement of DDTC124XE-7-F?
All DDTC124XE-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC124XE-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 DDTC124XE-7-F part is unused and in its original packaging.
Return procedure for DDTC124XE-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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