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Diodes Incorporated DDTC124GUA-7
- Part No.:
- DDTC124GUA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- -
- Datasheet:
-
DDTC124GUA-7.pdf
- Description:
- TRANS PREBIAS NPN 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,874
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Product details
Overview
DDTC124GUA-7 from Diodes Incorporated is an NPN pre-biased small-signal transistor with built-in 22 kΩ bias resistor (R2 only), rated for 50 V VCEO, 100 mA IC, and 200 mW PD, used in digital switching and level-shifting circuits in portable consumer electronics and industrial control interfaces.
For engineers reviewing the DDTC124GUA-7 datasheet, DDTC124GUA-7 pinout, DDTC124GUA-7 application, or DDTC124GUA-7 equivalent, key selection criteria include verified R2 value (22 kΩ ±30%), hFE = 56 at 5 mA/5 V, VCE(sat) ≤ 0.3 V at IC = 10 mA/IB = 0.5 mA, ESD robustness per JEDEC JS-001, and SOT-323 thermal performance (RθJA = 625 °C/W on FR4).
Technical Context
This device integrates a single NPN silicon epitaxial planar transistor with a dedicated base-emitter bleeder resistor (R2 = 22 kΩ), eliminating external bias components in low-power digital interface stages. It operates within -55°C to +150°C and supports DC switching up to 250 MHz fT.
No complementary PNP is integrated; DDTA-series parts are required for push-pull configurations. The SOT-323 package enables high-density placement while maintaining 94V-0 flammability rating and moisture sensitivity level 1 compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum allowable collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (max) | 100 mA - Continuous collector current limit defining safe switching capacity for logic-level loads. |
| PD | 200 mW - Power dissipation limit on standard FR4 PCB, dictating thermal derating above 25°C ambient. |
| hFE | 56 - DC current gain at IC = 5 mA, VCE = 5 V, enabling predictable base drive sizing. |
| R2 | 22 kΩ ±30% - Integrated base-emitter resistor value, reducing BOM count and layout area for digital input buffering. |
| VCE(sat) | ≤0.3 V @ IC=10 mA/IB=0.5 mA - Low saturation voltage ensures minimal voltage drop and power loss in ON-state switching. |
| fT | 250 MHz - Gain-bandwidth product confirming suitability for high-speed digital signal routing up to ~10–20 MHz edge rates. |
Pinout & Package
Package: SOT-323 - ultra-small surface-mount plastic package (2.0–2.2 mm × 1.15–1.35 mm × 0.25–0.40 mm height), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Reference node for bias network; connects to ground or low-side return path in switch configurations. |
| 2 (Base) | Base terminal | Input node tied internally to R2; accepts TTL/CMOS-compatible logic signals without external pull-up/down. |
| 3 (Collector) | Collector terminal | Output node driving load; supports open-collector outputs, LED drivers, or microcontroller GPIO isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated R2 bias resistor | 22 kΩ ±30%, eliminating need for discrete base resistor and reducing PCB footprint by ≥2 components. |
| Epitaxial planar die construction | Ensures consistent hFE distribution and stable VCE(sat) across production lots and temperature ranges. |
| Lead-free/RoHS-compliant packaging | Molded "Green" compound (halogen-free, Sb2O3-free post-2006), compliant with IPC/JEDEC J-STD-020C Level 1. |
| Low VCE(sat) | ≤0.3 V at rated IC/IB, minimizing conduction loss in battery-powered sensor interface and indicator circuits. |
Applications
| Microcontroller GPIO Interface | LED Driver Circuit |
|---|---|
Use Scenario: Driving 5 V logic-level peripherals from 3.3 V MCU outputs with level translation and current amplification. IC Role / Device Role / Timing Role: Digital switch providing current gain and voltage isolation between incompatible logic families. Use Value: Enables reliable ON/OFF control without external bias resistors, reducing component count and layout complexity. | Use Scenario: Switching low-current indicator LEDs (≤20 mA) in handheld medical devices and instrumentation panels. IC Role / Device Role / Timing Role: Constant-current sink switch with predictable turn-on threshold and low saturation loss. Use Value: Maintains LED brightness consistency across supply voltage variation (3–5.5 V) due to stable hFE and R2 tolerance. |
| Industrial Sensor Signal Conditioning | USB Port Over-Current Protection Enable |
Use Scenario: Buffering digital output signals from Hall-effect or proximity sensors before feeding into PLC input modules. IC Role / Device Role / Timing Role: Noise-immune digital buffer isolating sensitive analog front-end from noisy digital backplane. Use Value: R2 integration suppresses false triggering from EMI-induced base transients, improving system reliability. | Use Scenario: Enabling/disabling USB VBUS power path via host controller GPIO in embedded USB hubs and docking stations. IC Role / Device Role / Timing Role: High-side enable switch controlling PMOS gate drive in USB power delivery circuitry. Use Value: Fast turn-on (ton < 50 ns typical) and low leakage (<0.5 μA ICBO) ensure precise VBUS sequencing and standby current compliance. |
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 |
|---|---|---|---|
| DDTC114GUA-7 | R2 = 10 kΩ (vs. 22 kΩ); hFE min = 30 (vs. 56); higher base current draw at same VIN. | Better suited for lower-VCC (2.5–3.3 V) logic systems requiring stronger base drive. | Select when interfacing with weak-drive MCUs or needing faster turn-on at cost of higher quiescent current. |
| DDTC144GUA-7 | R2 = 47 kΩ (vs. 22 kΩ); hFE min = 68 (vs. 56); lower base current, higher VBE(on) threshold. | Optimized for 5 V CMOS inputs with tighter noise margins and reduced base loading. | Choose for noise-sensitive environments or where input leakage must be minimized below 100 nA. |
Compared with DDTC114GUA-7 and DDTC144GUA-7, DDTC124GUA-7 offers balanced base resistance and gain for general-purpose 3.3/5 V digital interfacing-delivering optimal trade-off between speed, drive strength, and power efficiency without overdesigning R2 for specific voltage rails.
Availability
DDTC124GUA-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical device indicators, and USB peripheral power management requiring stable component supply and long-term obsolescence mitigation.
Supply support for DDTC124GUA-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, specializing in high-reliability, energy-efficient components for industrial, computing, and consumer markets.
The DDTC (R2-only series) UA family targets space-constrained digital interface applications, delivering pre-biased transistor functionality with guaranteed R2 tolerance and extended temperature operation (-55°C to +150°C).
FAQ
What is the exact value and tolerance of the internal bias resistor R2 in DDTC124GUA-7?
The internal R2 resistor is 22 kΩ with a tolerance of ±30%, confirmed in the Electrical Characteristics table on page 2 of DS30324 Rev. 7-2. This value is laser-trimmed during wafer sort and validated per lot release testing, ensuring consistent base biasing across operating temperatures.
Can DDTC124GUA-7 replace a standard 2N3904 with external base resistor in existing designs?
Yes, but only if the original design uses a 22 kΩ base resistor and operates within 50 V/100 mA limits. Pin compatibility (SOT-323, E-B-C) allows direct substitution, though hFE and VCE(sat) differ-verify switching speed and saturation margin under actual load conditions.
Is DDTC124GUA-7 qualified for automotive applications per AEC-Q101?
No-DDTC124GUA-7 is not AEC-Q101 qualified. It meets industrial temperature range (-55°C to +150°C) and RoHS requirements, but lacks stress test reports, failure analysis data, and part-specific PPAP documentation required for automotive use.
Does the SOT-323 package support reflow soldering per JEDEC J-STD-020?
Yes-the SOT-323 package is rated for moisture sensitivity level 1 and fully compatible with standard lead-free reflow profiles (peak 260°C, 30 sec max). Diodes Inc. specifies full compliance with MIL-STD-202 Method 208 for solderability and AP02001 pad layout for thermal reliability.
DDTC124GUA-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:
- -
DDTC124GUA-7 FAQ
1.How can I place an order for DDTC124GUA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDTC124GUA-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 DDTC124GUA-7 reliable?
The price and inventory of DDTC124GUA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDTC124GUA-7 is usually 5 days.
3.What payment methods are accepted for DDTC124GUA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDTC124GUA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDTC124GUA-7?
DDTC124GUA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDTC124GUA-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 DDTC124GUA-7?
For technical support, including DDTC124GUA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDTC124GUA-7 requirements.
6.How does Aetrix verify that DDTC124GUA-7 is sourced from the original manufacturer or authorized distributors?
All DDTC124GUA-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 DDTC124GUA-7 meets industry standards.
7.What is the process for return or replacement of DDTC124GUA-7?
All DDTC124GUA-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDTC124GUA-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 DDTC124GUA-7 part is unused and in its original packaging.
Return procedure for DDTC124GUA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDTC124GUA-7 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
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DTC114EKAT146
Rohm Semiconductor
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DDTD113ZC-7-F
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DRDNB16W-7
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PDTC114ET,215
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PDTC143ZT,215
Nexperia USA Inc.
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PDTC143ET,215
Nexperia USA Inc.
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PDTC143XT,215
Nexperia USA Inc.
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MMUN2211LT1G
onsemi
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PDTC144ET,215
Nexperia USA Inc.
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PDTC124ET,215
Nexperia USA Inc.
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