My Inquiry
My Account
Diodes Incorporated DDTC115GCA-7-F
- Part No.:
- DDTC115GCA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC115GCA-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDTC115GCA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor in SOT-23 package with built-in 100 kΩ bias resistor (R2 only), 50 V VCEO, 100 mA IC(max), and hFE = 82 at 5 mA/5 V, used for digital switching in portable logic interface circuits.
For engineers reviewing the DDTC115GCA-7-F datasheet, DDTC115GCA-7-F pinout, DDTC115GCA-7-F application, or DDTC115GCA-7-F equivalent, key selection criteria include R2-only bias topology, guaranteed hFE minimum, VCEO/VCBO rating, thermal derating on FR4, and RoHS-compliant green molding compound.
Technical Context
This device integrates a single NPN silicon epitaxial planar transistor with one external-base biasing resistor (R2) connected between base and emitter - no R1 - enabling simplified high-side switch or inverter configurations. It operates as a digital on/off switch rather than linear amplifier, with VCE(sat) ≤ 0.3 V at IC = 10 mA/IB = 0.5 mA.
The 100 kΩ ±30% R2 resistor sets fixed bias current, eliminating external base resistors in level-shifting and GPIO-driven load control. Its fT = 250 MHz supports fast edge transitions in 3.3 V/5 V logic interfacing, while ESD robustness and moisture sensitivity level 1 ensure manufacturability in automated SMT lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports rail-to-rail switching up to 5 V logic with margin for transients |
| IC(max) | 100 mA - drives LED strings, small relays, or logic-level MOSFET gates directly |
| hFE | 82 min @ 5 mA/5 V - ensures reliable saturation with low base drive current |
| R2 | 100 kΩ ±30% - eliminates need for external base resistor in digital switch designs |
| VCE(sat) | ≤ 0.3 V @ IC = 10 mA/IB = 0.5 mA - minimizes power loss and self-heating in active state |
| PD | 200 mW - limits continuous dissipation; requires thermal pad layout per AP02001 for full rating |
| TJ | −55 °C to +150 °C - enables operation in automotive under-hood and industrial control environments |
Pinout & Package
SOT-23 plastic surface-mount package (JEDEC TO-236AB), 3-terminal, lead-free matte tin plating over Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for R2; connects to ground or low-side return path |
| 2 (Base) | Base terminal | Input control node; internally connected to R2 top end |
| 3 (Collector) | Collector terminal | Switched output node; connects to load and positive supply rail |
Key Features
| Feature | Design Value |
|---|---|
| R2-only bias network | Single 100 kΩ resistor from base to emitter - reduces BOM count and PCB area vs. dual-resistor bias |
| Green RoHS compliance | Halogen-, antimony-, and lead-free molding compound (Date Code V9+), meeting IPC-J-STD-020D level 1 |
| Guaranteed hFE min | 82 at 5 mA/5 V - ensures predictable saturation across temperature and process variation |
| Low VCE(sat) | ≤ 0.3 V - maintains <10 mW conduction loss at 10 mA, critical for battery-powered devices |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving 2–3 mA indicator LEDs from 3.3 V MCU outputs with limited sink/source capability. IC Role / Device Role / Timing Role: Digital switch configured as low-side driver with fixed R2 bias enabling direct GPIO connection. Use Value: Eliminates external base resistor; VCE(sat) ≤ 0.3 V ensures >95% LED forward voltage utilization. | Use Scenario: Level-shifting 1.8 V/3.3 V logic signals to 5 V peripherals in space-constrained IoT nodes. IC Role / Device Role / Timing Role: Inverting buffer with hFE ≥ 82 ensuring clean logic transition at 10 MHz edges. Use Value: fT = 250 MHz supports rise/fall times <3.5 ns, preserving signal integrity without added capacitance. |
| Small Relay Interface | Load Switch for Sensor Modules |
Use Scenario: Controlling 5 V, 30 mA coil relays in industrial PLC I/O modules. IC Role / Device Role / Timing Role: High-side switch (collector to VCC, emitter to relay coil) with R2 bias simplifying drive circuitry. Use Value: 50 V VCEO withstands relay flyback spikes; 100 mA IC rating provides 3× safety margin. | Use Scenario: Enabling/disabling 3.3 V sensor subcircuits (e.g., analog front-ends) during sleep mode. IC Role / Device Role / Timing Role: Low-leakage enable switch with IEBO = 30 μA max at VEB = 4 V, minimizing standby current. Use Value: IEBO ≤ 58 μA ensures <0.2 μA total quiescent draw per switch in multi-channel systems. |
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 |
|---|---|---|---|
| NSBC114XV6T1G | R2 = 10 kΩ (not 100 kΩ); hFE min = 30; same SOT-23 package | Designed for higher base drive current; unsuitable where low IB is required | Select only if driving from high-current sources (e.g., 5 V TTL) and lower gain is acceptable |
| EMH1151T2G | R2 = 100 kΩ but includes R1 (dual-resistor); hFE min = 68; same VCEO/IC | Offers tighter bias stability via R1+R2 divider; larger footprint (SOT-363) | Choose when precise base current control is needed and board space allows dual-resistor topology |
Compared with NSBC114XV6T1G and EMH1151T2G, DDTC115GCA-7-F uniquely delivers 100 kΩ R2-only bias with highest guaranteed hFE (82) in SOT-23, optimizing for low-drive, high-gain digital switching where minimal component count is critical.
Availability
DDTC115GCA-7-F is available at Aetrix Electronics and suitable for LED indicator drivers, microcontroller GPIO expansion, and small relay interfaces requiring stable component supply across consumer, industrial, and automotive electronics programs.
Supply support for DDTC115GCA-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, cost-optimized components for power management, signal integrity, and protection.
This part belongs to the DDTC R2-Only Series - a family of pre-biased NPN transistors engineered specifically for reducing bill-of-materials count and PCB area in digital switching applications without compromising gain or voltage ratings.
FAQ
What is the function of the internal 100 kΩ resistor in DDTC115GCA-7-F?
The internal 100 kΩ resistor (R2) connects the base to the emitter, providing fixed base bias current without requiring an external resistor. This configuration enables direct connection to logic outputs and simplifies design of digital switches, inverters, and level shifters while maintaining guaranteed hFE performance across temperature.
Can DDTC115GCA-7-F be used in linear amplification applications?
No - this device is optimized and characterized for digital switching operation only. Its hFE is specified at IC = 5 mA/VCE = 5 V (saturation region), and no linearity, noise, or small-signal parameters (e.g., rπ, gm) are guaranteed. Use standard small-signal transistors like BC847 for analog amplification.
Is the SOT-23 package of DDTC115GCA-7-F compatible with standard pick-and-place equipment?
Yes - it uses JEDEC-standard SOT-23 (TO-236AB) dimensions with 0.95 mm pitch and 2.8–3.0 mm body length. The matte tin finish meets MIL-STD-202 solderability requirements, and moisture sensitivity level 1 allows unlimited floor life before reflow, supporting high-yield automated assembly.
How does the R2-only topology differ from dual-resistor pre-biased transistors?
R2-only devices like DDTC115GCA-7-F use only an emitter-base resistor, resulting in simpler biasing and lower input impedance. Dual-resistor types (e.g., EMH1151T2G) add a collector-base resistor (R1) for improved turn-off speed and leakage control - a trade-off that increases component count and footprint but enhances dynamic performance in high-frequency switching.
DDTC115GCA-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):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- -
- Resistor - Emitter Base (R2):
- 100 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 82 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA (ICBO)
- Frequency - Transition:
- 250 MHz
- Power - Max:
- 200 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDTC115GCA-7-F FAQ
1.How can I place an order for DDTC115GCA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC115GCA-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 DDTC115GCA-7-F reliable?
The price and inventory of DDTC115GCA-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 DDTC115GCA-7-F is usually 5 days.
3.What payment methods are accepted for DDTC115GCA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC115GCA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC115GCA-7-F?
DDTC115GCA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC115GCA-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 DDTC115GCA-7-F?
For technical support, including DDTC115GCA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC115GCA-7-F requirements.
6.How does Aetrix verify that DDTC115GCA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC115GCA-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 DDTC115GCA-7-F meets industry standards.
7.What is the process for return or replacement of DDTC115GCA-7-F?
All DDTC115GCA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC115GCA-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 DDTC115GCA-7-F part is unused and in its original packaging.
Return procedure for DDTC115GCA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC115GCA-7-F 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…
