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Diodes Incorporated DDTD123YC-7-F
- Part No.:
- DDTD123YC-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTD123YC-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,614
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Product details
Overview
DDTD123YC-7-F from Diodes Incorporated is an NPN pre-biased transistor in SOT23 package, featuring integrated 2.2kΩ and 10kΩ bias resistors, 500mA output current capability, VCEO = 40V, and VCE(sat) ≤ 0.3V at IC = 50mA/IB = 2.5mA - used for compact logic-level switching in automotive body control modules.
For engineers reviewing the DDTD123YC-7-F datasheet, DDTD123YC-7-F pinout, DDTD123YC-7-F application, or DDTD123YC-7-F equivalent, key selection criteria include input voltage range (–5V to +12V), DC current gain (hFE = 100–600), thermal resistance (RθJA = 500°C/W), and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This device integrates base-emitter and base-collector biasing resistors (R1 = 2.2kΩ, R2 = 10kΩ) to eliminate external components in digital switching circuits. It operates as a single-transistor load switch with defined turn-on threshold (VIN(on) = 3.0V at IO = 20mA) and guaranteed saturation under logic-driven conditions.
The SOT23 package enables high-density PCB layouts while maintaining thermal performance up to +150°C junction temperature. Its complementary PNP counterpart is DDTB123YC-7-F, supporting push-pull configurations in level-shifting and interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum collector-emitter voltage before breakdown; supports 24V automotive rail switching with margin. |
| IC | 500 mA - Continuous collector current rating; enables direct driving of small relays or LEDs without external amplification. |
| VCE(sat) | ≤ 0.3 V @ IC/IB = 50mA/2.5mA - Low saturation voltage minimizes power loss and self-heating in high-duty-cycle switching. |
| hFE | 100–600 - DC current gain range ensures reliable turn-on across process variation and temperature extremes (–55°C to +150°C). |
| R1, R2 | 2.2kΩ / 10kΩ - Integrated bias network sets precise base drive ratio; eliminates two external resistors and layout area. |
| PD | 250 mW - Power dissipation limit on FR4 board; defines maximum continuous switching frequency at rated load. |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for bias network; connects to ground or low-side return path in common-emitter configuration. |
| 2 (Base) | Input node | Access point to internal R1–R2 divider; accepts TTL/CMOS logic-level signals directly without series resistor. |
| 3 (Collector) | Output node | High-current switched output; sinks up to 500mA to load when biased via Pin 2, with VCE(sat) ≤ 0.3V. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistors | R1 = 2.2kΩ, R2 = 10kΩ - eliminates discrete bias network, reducing BOM count and PCB footprint by ≥2 components. |
| AEC-Q101 qualified | Qualified for automotive applications - meets stress testing requirements for temperature cycling, HTRB, and ESD per AEC-Q101 Rev D. |
| Green RoHS compliance | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) - satisfies EU ELV and OEM chemical content restrictions. |
| SOT23 thermal performance | RθJA = 500°C/W on FR4 - enables operation at full 500mA load up to +85°C ambient with standard PCB layout. |
Applications
| Automotive Door Module Switching | Industrial PLC Input Conditioning |
|---|---|
Use Scenario: Driving window lift motor enable lines and mirror fold/unfold actuators in door control units. IC Role / Device Role / Timing Role: NPN pre-biased switch translating 3.3V/5V microcontroller GPIO to 12V/24V load control with fast turn-on (tON < 100ns typical). Use Value: Eliminates need for external base resistor and pull-down, reducing component count and improving EMI immunity via controlled edge rates. | Use Scenario: Converting 24V industrial sensor outputs to 3.3V/5V logic levels for FPGA or MCU inputs. IC Role / Device Role / Timing Role: Level-shifting interface with built-in hysteresis via R1/R2 feedback, enabling noise-immune signal conditioning. Use Value: Provides defined input threshold (VIN(on) = 3.0V) and guaranteed off-state leakage (<0.5µA), replacing discrete transistor + resistor networks. |
| LED Driver for Dashboard Backlight | USB Port Over-Current Protection Enable |
Use Scenario: Constant-current LED string switching in instrument cluster backlighting with PWM dimming. IC Role / Device Role / Timing Role: Low-saturation load switch controlling LED cathode path; handles 350mA peak current during PWM pulses. Use Value: VCE(sat) ≤ 0.3V limits power loss to <105mW at 350mA, avoiding thermal derating in confined dashboard space. | Use Scenario: Enabling/disabling USB VBUS power path in embedded host controllers based on enumeration status. IC Role / Device Role / Timing Role: High-side switch controller driver - drives gate of external P-channel MOSFET via open-collector output stage. Use Value: Integrated R1/R2 ensures clean logic-level translation from 1.8V/3.3V USB controller to MOSFET gate, preventing partial turn-on. |
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 |
|---|---|---|---|
| DDTD123TC-7-F | R1 = 2.2kΩ, R2 = open - no emitter-base resistor; requires external pull-down for stable off-state. | Used where external bias control is preferred; lacks internal R2 for enhanced noise immunity. | Select when designing for adjustable threshold or when using external feedback networks. |
| NSVD123YWT1G | Same R1/R2 values (2.2kΩ/10kΩ), but hFE min = 80 vs. 100; not AEC-Q101 qualified. | Targeted at commercial-grade consumer electronics; lacks automotive stress test validation. | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not required. |
Compared with DDTD123TC-7-F, DDTD123YC-7-F provides superior noise immunity via integrated R2; compared with NSVD123YWT1G, it delivers higher minimum hFE and certified automotive reliability - critical for safety-critical body electronics.
Availability
DDTD123YC-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, LED backlight drivers, and USB power management systems requiring stable component supply and long-term lifecycle support.
Supply support for DDTD123YC-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 part belongs to the DDTD series of pre-biased transistors, designed specifically for reducing design complexity in logic-level interface and load-switching applications across automotive and industrial control systems.
FAQ
What is the maximum operating temperature for DDTD123YC-7-F?
The device supports junction temperatures from –55°C to +150°C. Its thermal resistance (RθJA = 500°C/W) allows full 500mA operation up to +85°C ambient on standard FR4 PCB with recommended pad layout. Derating begins above +85°C ambient per Figure 1 in DS30384 Rev. 12-2.
Does DDTD123YC-7-F require an external base resistor?
No. It integrates both R1 (2.2kΩ) and R2 (10kΩ) internally, enabling direct connection of logic-level signals to Pin 2 (Base) without external bias components. This eliminates risk of incorrect resistor selection and reduces PCB area by ~2.5 mm².
Is DDTD123YC-7-F qualified for automotive use?
Yes. Diodes Incorporated qualifies this part to AEC-Q101 standards for discrete semiconductors. It undergoes stress testing including HTGB, HTRB, temperature cycling, and ESD per Rev D, and is manufactured in IATF 16949-certified facilities.
How does the input voltage range affect system compatibility?
Its specified input voltage range of –5V to +12V (Pin 1 to Pin 2) ensures compatibility with 3.3V, 5V, and 12V logic families. The –5V reverse rating protects against transient negative spikes in automotive environments, while +12V supports direct connection to vehicle battery-sensed signals without level shifters.
DDTD123YC-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 2.2 kOhms
- Resistor - Emitter Base (R2):
- 10 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 50mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 2.5mA, 50mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 200 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTD123YC-7-F FAQ
1.How can I place an order for DDTD123YC-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTD123YC-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 DDTD123YC-7-F reliable?
The price and inventory of DDTD123YC-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 DDTD123YC-7-F is usually 5 days.
3.What payment methods are accepted for DDTD123YC-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTD123YC-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTD123YC-7-F?
DDTD123YC-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTD123YC-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 DDTD123YC-7-F?
For technical support, including DDTD123YC-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTD123YC-7-F requirements.
6.How does Aetrix verify that DDTD123YC-7-F is sourced from the original manufacturer or authorized distributors?
All DDTD123YC-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 DDTD123YC-7-F meets industry standards.
7.What is the process for return or replacement of DDTD123YC-7-F?
All DDTD123YC-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTD123YC-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 DDTD123YC-7-F part is unused and in its original packaging.
Return procedure for DDTD123YC-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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