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Diodes Incorporated DDTC115GKA-7-F
- Part No.:
- DDTC115GKA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDTC115GKA-7-F.pdf
- Description:
- TRANS PREBIAS NPN 50V SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,530
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Product details
Overview
DDTC115GKA-7-F from Diodes Incorporated is an NPN pre-biased small-signal transistor with built-in 100 kΩ bias resistor (R2 only), SC-59 package, VCEO = 50 V, IC(max) = 100 mA, and hFE = 82 at IC = 5 mA, used in digital logic interface and level-shifting circuits for microcontroller I/O drivers.
For engineers reviewing the DDTC115GKA-7-F datasheet, DDTC115GKA-7-F pinout, DDTC115GKA-7-F application, or DDTC115GKA-7-F equivalent, key selection criteria include R2-only bias configuration, SC-59 footprint compatibility, VCE(sat) ≤ 0.3 V at IC/IB = 10, thermal resistance of 625 °C/W on FR4, and JEDEC-compliant lead-free terminations.
Technical Context
This device integrates a single NPN silicon epitaxial planar transistor with a dedicated 100 kΩ base-emitter pull-up resistor (R2), eliminating external bias components. It operates as a digital switch with guaranteed saturation under IC = 10 mA / IB = 0.5 mA conditions and supports ambient temperatures from –55 °C to +150 °C.
The SC-59 package features three terminals-Emitter, Base, Collector-with standardized pinout per JEDEC TO-236AB, and uses matte tin-plated copper leadframe compliant with RoHS and J-STD-020C Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V industrial control rails. |
| IC(max) | 100 mA - Continuous collector current rating; supports driving LEDs, relays, and small MOSFET gates. |
| hFE | 82 (min) at IC = 5 mA - Confirmed DC current gain ensures reliable switching with low base drive current. |
| VCE(sat) | ≤ 0.3 V at IC = 10 mA, IB = 0.5 mA - Low saturation voltage minimizes power loss in high-duty-cycle switching. |
| R2 | 100 kΩ ±30% - Integrated base-emitter bias resistor simplifies PCB layout and reduces BOM count by one passive component. |
| PD | 200 mW - Power dissipation limit on standard FR4 board; requires derating above 25 °C ambient per Fig. 1. |
| fT | 250 MHz - Gain-bandwidth product confirms suitability for signal switching up to ~10 MHz digital edges. |
Pinout & Package
Package: SC-59 (JEDEC TO-236AB), surface-mount plastic case with UL 94V-0 flammability rating, 0.006 g typical weight, and matte tin-plated copper leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink node | Connected to ground or low-side return path; forms common-emitter switch configuration. |
| Base (B) | Control input node | Internally connected to R2 (100 kΩ); accepts TTL/CMOS logic-level drive without external resistor. |
| Collector (C) | Switched output node | Drives load between VCC and collector; supports active-low output topology. |
Key Features
| Feature | Design Value |
|---|---|
| R2-only internal bias network | Eliminates need for external base resistor, reducing layout area and assembly steps in digital interface designs. |
| SC-59 footprint compatibility | Matches industry-standard TO-236AB land pattern, enabling drop-in replacement for similar pre-biased transistors. |
| RoHS-compliant matte tin plating | Ensures solderability per MIL-STD-202 Method 208 and eliminates lead-based contamination in final assemblies. |
| –55 °C to +150 °C operation | Validated junction temperature range supports deployment in automotive engine compartments and industrial motor drives. |
Applications
| Microcontroller I/O Interface | LED Driver Circuit |
|---|---|
Use Scenario: Driving discrete LEDs from 3.3 V or 5 V MCU GPIO pins with current limiting via collector resistor. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, turning LED on/off via base logic level. Use Value: Built-in R2 ensures consistent turn-on behavior across voltage tolerances and eliminates resistor placement error during layout. | Use Scenario: Controlling status indicators on industrial HMI panels where space and component count are constrained. IC Role / Device Role / Timing Role: Low-power digital switch handling <100 mA pulsed loads with fast turn-off due to low Cob (≈5 pF at 5 V). Use Value: VCE(sat) ≤ 0.3 V reduces heat generation in densely packed indicator arrays, improving long-term reliability. |
| Logic-Level Translation | Relay Driver Stage |
Use Scenario: Converting 1.8 V FPGA output signals to 5 V-compatible levels for downstream peripherals. IC Role / Device Role / Timing Role: Saturated switch operating with IB/IC = 0.05, providing clean rail-to-rail output swing. Use Value: hFE ≥ 82 guarantees full saturation even at reduced VBE, avoiding partial conduction in mixed-voltage systems. | Use Scenario: Activating 5 V/10 mA coil relays in programmable logic controllers (PLCs) with isolated control inputs. IC Role / Device Role / Timing Role: High-voltage switch handling 50 V transient spikes during relay coil de-energization. Use Value: VCEO = 50 V and BVCBO = 50 V provide margin against inductive kickback without requiring snubbers. |
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 |
|---|---|---|---|
| DDTC124GKA-7-F | R2 = 22 kΩ (vs. 100 kΩ); hFE min = 56 | Higher base current draw; better suited for lower-VCC or faster switching | Select when driving higher-current loads (>20 mA) with tighter VBE margin. |
| NSVDDTC115GKA-7-F | Automotive-grade AEC-Q101 qualified; identical R2/hFE/VCEO | Qualified for under-hood automotive use; same electrical specs | Choose for automotive OEM designs requiring qualification documentation and extended temp validation. |
Compared with DDTC124GKA-7-F, DDTC115GKA-7-F offers higher input impedance and lower base current demand, while NSVDDTC115GKA-7-F adds AEC-Q101 compliance without altering switching performance-making it ideal for automotive functional safety paths.
Availability
DDTC115GKA-7-F is available at Aetrix Electronics and suitable for microcontroller I/O interfacing, LED driver circuits, and logic-level translation applications requiring stable component supply and consistent SC-59 packaging.
Supply support for DDTC115GKA-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, energy-efficient components for industrial, computing, and consumer markets.
The DDTC (R2-only series) KA family delivers pre-biased NPN transistors optimized for space-constrained digital interface applications where simplified biasing and consistent switching behavior are critical.
FAQ
What is the function of the R2 resistor in DDTC115GKA-7-F?
The R2 resistor is a 100 kΩ internal base-emitter pull-up resistor that provides fixed biasing for reliable NPN transistor saturation. It eliminates the need for an external base resistor, simplifying circuit design and reducing PCB footprint in digital switching applications.
Can DDTC115GKA-7-F replace a standard 2N3904 with external bias resistors?
Yes, but only in saturated-switch applications where the 100 kΩ R2 value matches the required base drive. Unlike the 2N3904, DDTC115GKA-7-F cannot operate in linear amplification mode due to its fixed bias network and lacks emitter degeneration for gain stability.
Is DDTC115GKA-7-F compatible with lead-free reflow profiles?
Yes-it uses matte tin-plated copper leads qualified for lead-free soldering per J-STD-020C Level 1 moisture sensitivity, with peak reflow temperatures up to 260 °C and full compliance to RoHS Directive 2011/65/EU.
What is the maximum safe operating frequency for switching with DDTC115GKA-7-F?
The fT of 250 MHz indicates usable switching up to approximately 10 MHz for clean digital edges. For reliable operation, keep pulse widths >100 ns and avoid continuous operation above 5 MHz without verifying VCE(sat) and thermal rise in the target layout.
DDTC115GKA-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:
- Obsolete
- 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:
- SC-59-3
DDTC115GKA-7-F FAQ
1.How can I place an order for DDTC115GKA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC115GKA-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 DDTC115GKA-7-F reliable?
The price and inventory of DDTC115GKA-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 DDTC115GKA-7-F is usually 5 days.
3.What payment methods are accepted for DDTC115GKA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC115GKA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC115GKA-7-F?
DDTC115GKA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC115GKA-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 DDTC115GKA-7-F?
For technical support, including DDTC115GKA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC115GKA-7-F requirements.
6.How does Aetrix verify that DDTC115GKA-7-F is sourced from the original manufacturer or authorized distributors?
All DDTC115GKA-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 DDTC115GKA-7-F meets industry standards.
7.What is the process for return or replacement of DDTC115GKA-7-F?
All DDTC115GKA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DDTC115GKA-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 DDTC115GKA-7-F part is unused and in its original packaging.
Return procedure for DDTC115GKA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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