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Diodes Incorporated DDTC124TE-7
- Part No.:
- DDTC124TE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTC124TE-7.pdf
- Description:
- TRANS PREBIAS NPN 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:5,631
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Product details
Overview
DDTC124TE-7 from Diodes Incorporated is an NPN pre-biased transistor in SOT523 package with integrated 22 kΩ base bias resistor (R1 only), rated for 50 V VCEO, 100 mA IC(MAX), and 150 mW power dissipation; used in compact logic-level switching and signal conditioning circuits in automotive body control modules and portable power management.
For engineers reviewing the DDTC124TE-7 datasheet, DDTC124TE-7 pinout, DDTC124TE-7 application, or DDTC124TE-7 equivalent, key selection criteria include verified R1 tolerance (±30%), guaranteed hFE range (100–600), AEC-Q101 qualification, SOT523 thermal resistance (833 °C/W), and saturation voltage under 0.3 V at IC/IB = 2.5 mA/0.25 mA.
Technical Context
This device implements a single-NPN transistor with monolithic integration of one external-base biasing resistor (R1), eliminating discrete bias network design effort. It operates as a digital switch with defined turn-on threshold and predictable saturation behavior across -55°C to +150°C ambient range.
The R1-only topology supports direct interfacing with 3.3 V and 5 V logic outputs without additional current-limiting resistors. Its 22 kΩ nominal R1 value sets base drive current for reliable switching at IC ≤ 2.5 mA while maintaining low input power consumption and stable hFE-dependent gain control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with safety margin. |
| IC(MAX) | 100 mA - Continuous collector current limit; supports driving small relays, LEDs, or MOSFET gates in low-power control paths. |
| R1 (Nominal) | 22 kΩ - Integrated base bias resistor; sets IB ≈ 0.25 mA when driven from 5 V, enabling clean logic-level switching. |
| hFE | 100–600 - DC current gain range at IC = 1 mA, VCE = 5 V; ensures consistent switching performance across production lots. |
| VCE(sat) | ≤ 0.3 V at IC/IB = 2.5 mA/0.25 mA - Low saturation voltage minimizes power loss and heat generation in active-switching mode. |
| PD | 150 mW - Power dissipation rating on FR-4 board; defines maximum continuous switching duty cycle at ambient temperatures up to 85°C. |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.55 mm), moisture sensitivity level 1, matte tin terminations, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink terminal | Connected to ground or low-side return path; provides reference for base bias current flow through R1. |
| Base (B) | Control input node | Internally connected to R1; accepts logic-level voltage to enable transistor conduction without external resistor. |
| Collector (C) | Current source output | Drives load between VCC and collector; supports active pull-up or high-side switching configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including BCM, lighting control, and sensor interface modules requiring PPAP documentation. |
| R1-only bias architecture | Reduces BOM count by eliminating external base resistor; simplifies PCB layout and improves assembly yield in space-constrained designs. |
| Green, halogen-free construction | Meets RoHS 3 (2015/863/EU) and IATF 16949 manufacturing requirements; supports sustainability compliance in Tier-1 automotive supply chains. |
| 833 °C/W RθJA | Thermal resistance enables operation up to +150°C junction temperature with minimal derating on standard FR-4 layouts. |
Applications
| Automotive Door Module Switching | USB Port Power Control |
|---|---|
Use Scenario: Controlling window lift motor enable signals and mirror fold/unfold actuators in door ECUs. IC Role / Device Role / Timing Role: NPN pre-biased switch providing logic-compatible gate drive to downstream MOSFETs or relay coils. Use Value: 22 kΩ R1 ensures precise base current limiting for repeatable turn-on timing and reduced EMI during actuator activation. | Use Scenario: Enabling/disabling VBUS power to USB peripherals in portable docking stations. IC Role / Device Role / Timing Role: Low-side switch isolating USB power rail from host controller GPIO pins. Use Value: 0.3 V VCE(sat) limits insertion loss to <1% at 100 mA load, preserving USB 2.0 voltage compliance. |
| Smart Home Sensor Interface | Industrial PLC Input Conditioning |
Use Scenario: Level-shifting and current amplification for PIR motion sensor outputs feeding microcontroller interrupt pins. IC Role / Device Role / Timing Role: Signal conditioner converting weak analog pulses into robust digital logic transitions. Use Value: Guaranteed hFE ≥100 ensures reliable triggering even at -40°C ambient, supporting wide industrial temperature operation. | Use Scenario: Isolating 24 V DC field inputs from 3.3 V FPGA I/O banks in modular PLC backplanes. IC Role / Device Role / Timing Role: Input stage translator protecting FPGA pins from overvoltage and reverse polarity transients. Use Value: 50 V VCBO and 5 V VEBO ratings provide margin against common-mode surges in noisy factory environments. |
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 |
|---|---|---|---|
| DDTC124TKA-7 | Same R1 = 22 kΩ, but in SOT-323 package (larger footprint, higher RθJA = 625 °C/W) | Preferred where manual rework or thermal margin >150 mW is required | Select when board layout allows larger package and higher power handling is needed. |
| NSV12400MT1G | R1 = 22 kΩ, but hFE min = 80 (vs. 100), and not AEC-Q101 qualified | Suitable for consumer-grade products without automotive qualification requirements | Choose for cost-sensitive non-automotive designs where qualification traceability is not mandatory. |
Compared with DDTC124TE-7, DDTC124TKA-7 offers better thermal performance in less space-constrained layouts, while NSV12400MT1G reduces cost at the expense of automotive compliance and minimum gain assurance.
Availability
DDTC124TE-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB power switches, smart home sensor interfaces, and industrial PLC input conditioning requiring stable component supply and full AEC-Q101 traceability.
Supply support for DDTC124TE-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, manufacturing, and sales operations across Asia, Europe, and North America.
The DDTC (R1-ONLY SERIES) E product line delivers pre-biased transistors optimized for automotive signal switching and logic interface applications, emphasizing AEC-Q101 reliability, green packaging, and SOT523 miniaturization.
FAQ
Is DDTC124TE-7 pin-compatible with other SOT523 pre-biased transistors?
Yes - DDTC124TE-7 uses standard SOT523 pinout (Emitter-Base-Collector, left-to-right top view), matching industry-standard layout for EBC configuration. Mechanical dimensions and pad recommendations align with JEDEC MO-203AB, ensuring drop-in replacement compatibility with other SOT523 NPN pre-biased devices.
What is the maximum operating temperature for DDTC124TE-7 in continuous switching mode?
The device supports junction temperatures up to +150°C, with derated power dissipation beginning at +85°C ambient. At 25°C ambient, full 150 mW is usable; at 85°C ambient, maximum allowable power drops to ~65 mW based on its 833 °C/W RθJA rating on FR-4 board.
Does DDTC124TE-7 require external biasing components?
No - it integrates a single 22 kΩ base bias resistor (R1) internally, eliminating the need for external base resistors in standard logic-driven switching applications. This simplifies design, reduces component count, and improves layout density in space-critical PCBs.
How does the ±30% R1 tolerance affect circuit performance?
The ±30% R1 tolerance directly impacts base current: at 5 V drive, IB ranges from 0.175 mA to 0.245 mA. This variation is accommodated by the specified hFE range (100–600), ensuring reliable saturation across all units without requiring design guard-banding for worst-case gain.
DDTC124TE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- Frequency - Transition:
- -
- Power - Max:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
DDTC124TE-7 FAQ
1.How can I place an order for DDTC124TE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC124TE-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 DDTC124TE-7 reliable?
The price and inventory of DDTC124TE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC124TE-7 is usually 5 days.
3.What payment methods are accepted for DDTC124TE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC124TE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC124TE-7?
DDTC124TE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC124TE-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 DDTC124TE-7?
For technical support, including DDTC124TE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC124TE-7 requirements.
6.How does Aetrix verify that DDTC124TE-7 is sourced from the original manufacturer or authorized distributors?
All DDTC124TE-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 DDTC124TE-7 meets industry standards.
7.What is the process for return or replacement of DDTC124TE-7?
All DDTC124TE-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC124TE-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 DDTC124TE-7 part is unused and in its original packaging.
Return procedure for DDTC124TE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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