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Diodes Incorporated DDC144EU-7
- Part No.:
- DDC144EU-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DDC144EU-7.pdf
- Description:
- TRANS 2NPN PREBIAS 0.2W SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:9,035
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Product details
Overview
DDC144EU-7 from Diodes Incorporated is a dual NPN pre-biased small-signal transistor in SOT-363 package, featuring integrated 22 kΩ and 47 kΩ bias resistors (R1/R2), 50 V VCEO, 30 mA continuous output current per element, and 200 mW total power dissipation. It is used for level-shifting and digital switching in compact logic interface circuits.
For engineers reviewing the DDC144EU-7 datasheet, DDC144EU-7 pinout, DDC144EU-7 application, or DDC144EU-7 equivalent, key selection criteria include input voltage thresholds (VIN(OFF) = 0.5 V, VIN(ON) = 1.9 V), low saturation voltage (VCE(SAT) = 0.3 V @ IC/IB = 2.5 mA/0.25 mA), resistor tolerance (±30% R1, ±20% R2/R1), and thermal resistance (625 °C/W).
Technical Context
This device integrates two independent NPN transistors with monolithic bias networks-each channel includes series base resistor (R1) and base-emitter resistor (R2)-enabling direct TTL/CMOS-compatible switching without external bias components. It operates across –55 °C to +150 °C and supports rail-to-rail input swing up to +40 V.
The transistor exhibits DC current gain (hFE) of 68 min at IC = 5 mA, VCE = 5 V, and a gain-bandwidth product (fT) of 250 MHz under VCE = 10 V, IE = –5 mA conditions-suitable for medium-speed digital signal routing and load driving.
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 |
| IO (per element) | 30 mA - continuous output current capability; sufficient for LED drivers and logic buffer loads |
| VCE(SAT) | 0.3 V @ IC/IB = 2.5 mA/0.25 mA - low saturation loss preserves drive efficiency in active-low switches |
| VIN(OFF) / VIN(ON) | 0.5 V / 1.9 V - TTL-compatible input thresholds ensure reliable logic-level recognition |
| R1 / R2 | 22 kΩ / 47 kΩ - factory-trimmed internal bias network eliminates 4 external resistors per channel |
| PD (total) | 200 mW - derates linearly above 25 °C ambient; requires minimal PCB copper area for thermal management |
| fT | 250 MHz - supports signal integrity in <50 MHz digital clock distribution and pulse shaping |
Pinout & Package
SOT-363 (SC-88) surface-mount package: 6-pin, dual-transistor configuration with common emitter layout; moisture sensitivity level 1 (J-STD-020C); RoHS-compliant matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter 1) | Emitter terminal for first NPN transistor | Common reference node for channel 1; tied to ground or low-side return path |
| 2 (Base 1) | Input node connected to internal R1–R2 divider | Accepts logic-level signals directly; no external pull-up/down required |
| 3 (Collector 1) | Output node for first transistor | Drives loads up to 30 mA; compatible with open-collector interfaces |
| 4 (Emitter 2) | Emitter terminal for second NPN transistor | Independent low-side switch node; electrically isolated from pin 1 |
| 5 (Base 2) | Input node connected to internal R1–R2 divider | Matches pin 2 electrical behavior; enables synchronous dual-channel control |
| 6 (Collector 2) | Output node for second transistor | Provides redundant or complementary switching path; shares same package thermal mass |
Key Features
| Feature | Design Value |
|---|---|
| Dual NPN with matched bias network | Two independent channels share identical R1/R2 values (22 kΩ/47 kΩ), enabling consistent turn-on behavior across temperature |
| Low VCE(SAT) at rated current | 0.3 V saturation voltage minimizes power loss in high-duty-cycle switching applications like LED multiplexing |
| Wide operating temperature range | –55 °C to +150 °C junction rating supports under-hood automotive and industrial motor-control environments |
| Lead-free and RoHS compliant | Matte tin finish meets IPC-J-STD-020C Level 1 reflow profile; suitable for standard Pb-free assembly processes |
| High fT with low COB | 250 MHz gain-bandwidth and low output capacitance (<15 pF) preserve edge fidelity in fast digital transitions |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Driving discrete solenoids and indicator LEDs from microcontroller GPIO pins in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Dual-channel level-shifting switch translating 3.3 V/5 V logic to 24 V field-side loads. Use Value: Eliminates four external bias resistors per channel, reducing BOM count and PCB footprint by >30% versus discrete transistor solutions. | Use Scenario: Controlling door lock actuators and interior lighting via CAN-linked MCU outputs in BCM modules. IC Role / Device Role / Timing Role: Low-power, thermally robust interface between 5 V MCU outputs and 12 V automotive loads. Use Value: 150 °C max junction temperature ensures reliability in sealed, non-ventilated BCM enclosures near engine compartments. |
| Consumer Appliance Control Boards | Medical Diagnostic Instrumentation |
Use Scenario: Enabling/disabling display backlight segments and buzzer drivers in smart oven and washer UI boards. IC Role / Device Role / Timing Role: Compact dual-switch for pulsed DC loads requiring precise on/off timing and low standby leakage. Use Value: VIN(OFF) = 0.5 V guarantees zero false triggering from noise or floating inputs during sleep mode. | Use Scenario: Isolating microcontroller outputs from analog sensor excitation circuits in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Digitally controlled current source enable/disable switch with sub-1 µA off-state leakage. Use Value: IO(off) = 0.5 µA prevents unintended sensor biasing during measurement idle periods, preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN pre-biased transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DDC114EU-7 | R1/R2 = 10 kΩ/10 kΩ; higher input current (0.88 mA @ 5 V); lower VIN(OFF) (0.3 V) | Better suited for 1.8 V logic interfaces; less margin against noise-induced turn-on | Select when interfacing with low-voltage MCUs and noise-immunity is secondary to drive strength |
| DDC124EU-7 | R1/R2 = 22 kΩ/47 kΩ (same as DDC144EU-7); but rated for 50 mA IO and 70 mA peak | Higher output current supports heavier capacitive loads and faster switching in bus termination | Choose when driving >30 mA loads or requiring extended surge current capability without derating |
Compared with DDC144EU-7, DDC114EU-7 offers lower input threshold and higher drive current but reduced noise immunity, while DDC124EU-7 delivers identical biasing with greater output headroom-making it preferable for margin-critical industrial designs.
Availability
DDC144EU-7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and consumer appliance control boards requiring stable component supply and long-term manufacturability.
Supply support for DDC144EU-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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The DDC series targets space-constrained digital interface applications, delivering integrated biasing to replace discrete transistor-resistor combinations in logic translation, load switching, and signal conditioning circuits.
FAQ
What is the maximum allowable junction temperature for DDC144EU-7?
The absolute maximum junction temperature is +150 °C, verified per JEDEC JESD22-A108. Operation at this limit requires strict thermal design: ≤25 °C ambient with ≥1 cm² 2-oz copper pour per device, or active cooling. Derating begins at 25 °C ambient, with full 200 mW power dissipation only guaranteed below that point.
Can DDC144EU-7 be used in linear amplifier configurations?
No-it is optimized for saturated switching, not linear operation. Its internal bias network fixes base current, preventing stable Q-point control. The datasheet specifies parameters only under switching conditions (e.g., VCE(SAT), VIN(ON)), and no small-signal hfe or linearity data is provided. Use discrete transistors with external bias for amplification.
Is the SOT-363 package of DDC144EU-7 compatible with standard reflow profiles?
Yes-the device is qualified for IPC-J-STD-020C Level 1 moisture sensitivity and supports standard Pb-free reflow profiles (peak 260 °C, 60 sec max). Its thermal resistance (RJA = 625 °C/W) assumes mounting on FR4 with recommended pad layout per Diodes AP02001; deviation reduces thermal performance.
Does DDC144EU-7 support bidirectional signal routing?
No-it is unidirectional: emitter is input-referenced and collector is output-referenced. The internal R1–R2 network connects only from base to VCC and base to emitter; reverse biasing (e.g., applying voltage to collector while grounding emitter) risks exceeding BVEBO (5 V) or causing latch-up. Use dedicated analog switches for bidirectional paths.
DDC144EU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- 2 NPN - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 47kOhms
- Resistor - Emitter Base (R2):
- 47kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 68 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 200mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
DDC144EU-7 FAQ
1.How can I place an order for DDC144EU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC144EU-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 DDC144EU-7 reliable?
The price and inventory of DDC144EU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDC144EU-7 is usually 5 days.
3.What payment methods are accepted for DDC144EU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC144EU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC144EU-7?
DDC144EU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC144EU-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 DDC144EU-7?
For technical support, including DDC144EU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC144EU-7 requirements.
6.How does Aetrix verify that DDC144EU-7 is sourced from the original manufacturer or authorized distributors?
All DDC144EU-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 DDC144EU-7 meets industry standards.
7.What is the process for return or replacement of DDC144EU-7?
All DDC144EU-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDC144EU-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 DDC144EU-7 part is unused and in its original packaging.
Return procedure for DDC144EU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDC144EU-7 Tags
-
SMUN5311DW1T1G
onsemi
-
UMH9NTN
Rohm Semiconductor
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PUMH13,115
Nexperia USA Inc.
-
PUMD3-QX
Nexperia USA Inc.
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PUMD2,115
Nexperia USA Inc.
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RN4987FE,LF(CT
Toshiba Semiconductor and Storage
-
PUMD12,115
Nexperia USA Inc.
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PUMD9,115
Nexperia USA Inc.
-
PUMH9,115
Nexperia USA Inc.
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PUMD3,115
Nexperia USA Inc.
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DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
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