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Diodes Incorporated DDC124EH-7
- Part No.:
- DDC124EH-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays, Pre-Biased
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DDC124EH-7.pdf
- Description:
- TRANS 2NPN PREBIAS 0.15W SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:3,098
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Product details
Overview
DDC124EH-7 from Diodes Incorporated is an NPN pre-biased dual small-signal transistor in SOT-563 package, featuring integrated 22 kΩ and 22 kΩ bias resistors (R1 = R2), 50 V VCEO, 30 mA IO, 0.3 V VCE(sat) at IC/IB = 2.5 mA/0.25 mA, and 150 mW PD. It enables compact logic-level switching in space-constrained digital interface circuits.
For engineers reviewing the DDC124EH-7 datasheet, DDC124EH-7 pinout, DDC124EH-7 application, or DDC124EH-7 equivalent, key selection criteria include input threshold voltage (VIN(OFF) = 0.5 V, VIN(ON) = 1.9 V at VO = 0.3 V), output saturation performance, dual-transistor integration in 1.6 mm × 1.2 mm footprint, and RoHS-compliant green construction.
Technical Context
This dual NPN transistor integrates two identical pre-biased elements sharing common emitter terminals, each with matched 22 kΩ base resistors (R1, R2) enabling direct TTL/CMOS-level drive without external bias networks. It operates as a current-controlled switch with guaranteed hFE ≥ 56 at IC = 5 mA, VCE = 5 V.
The device supports rail-to-rail input operation from –10 V to +40 V, delivers 30 mA output current per channel, and maintains VCE(sat) ≤ 0.3 V under specified drive conditions. Thermal resistance is 833 °C/W on FR4 board, limiting continuous dissipation to 150 mW at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 3.3 V and 5 V logic rails with margin. |
| IO | 30 mA - Per-channel output current capability; sufficient for LED driving and low-power relay control. |
| VCE(sat) | 0.3 V at IC/IB = 2.5 mA/0.25 mA - Low saturation voltage minimizes power loss in switching applications. |
| R1 / R2 | 22 kΩ / 22 kΩ - Matched internal base bias resistors eliminate need for external components in digital interface designs. |
| PD | 150 mW - Power dissipation limit at TA = 25 °C; derates linearly above 25 °C per Fig. 1. |
| VIN(OFF) / VIN(ON) | 0.5 V / 1.9 V - Input thresholds compatible with standard CMOS/TTL logic families for clean switching. |
| Package | SOT-563 - 6-pin ultra-small surface-mount package (1.6 mm × 1.2 mm × 0.6 mm); suitable for high-density PCB layouts. |
Pinout & Package
SOT-563 package: 6-pin, dual-row, lead-free matte tin finish over copper leadframe; UL 94V-0 rated molded plastic body; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Transistor 1 | Common emitter connection for first NPN element; tied internally to Pin 4 in dual configuration. |
| 2 | Base of Transistor 1 | Connected to internal 22 kΩ resistor (R1); accepts logic-level input directly. |
| 3 | Collector of Transistor 1 | Output node for first channel; sinks up to 30 mA when saturated. |
| 4 | Emitter of Transistor 2 | Common emitter connection for second NPN element; tied internally to Pin 1. |
| 5 | Base of Transistor 2 | Connected to internal 22 kΩ resistor (R2); independent input for second channel. |
| 6 | Collector of Transistor 2 | Output node for second channel; electrically isolated from Pin 3. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NPN with matched bias resistors | Two independent switching channels share common emitter (Pins 1 & 4), each with dedicated 22 kΩ base resistors-reduces BOM count by 4 passive components per channel. |
| Low-input-threshold logic compatibility | VIN(OFF) = 0.5 V ensures reliable turn-off with weak pull-downs; VIN(ON) = 1.9 V guarantees activation from 3.3 V CMOS outputs. |
| Ultra-compact SOT-563 footprint | 1.6 mm × 1.2 mm body size saves >60% board area versus SO-8 or SC-70-6 alternatives while maintaining thermal performance. |
| Green, RoHS-compliant construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); fully compliant with EU RoHS 2 Directive 2011/65/EU. |
Applications
| LED Driver Interface | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a microcontroller with limited GPIO current capability. IC Role / Device Role: Dual-channel current-sinking switch translating logic-high signals into LED-on states. Use Value: Eliminates four external base resistors; 30 mA per channel supports standard 20 mA LEDs with headroom. |
Use Scenario: Adding discrete logic-level outputs to resource-constrained MCUs (e.g., 8-bit PIC or ARM Cortex-M0+). IC Role / Device Role: Level-shifting buffer amplifying weak MCU outputs to drive higher-capacitance loads or 5 V peripherals. Use Value: VIN(OFF)/VIN(ON) thresholds ensure noise immunity; 0.3 V VCE(sat) preserves signal swing integrity. |
| Industrial Sensor Interface | Consumer Appliance Control Logic |
Use Scenario: Isolating and conditioning open-collector sensor outputs (e.g., Hall effect or reed switches) in factory automation systems. IC Role / Device Role: Signal conditioning stage converting floating sensor signals into clean, rail-referenced logic levels. Use Value: –10 V to +40 V input range accommodates noisy industrial environments; dual channels support redundant sensing paths. |
Use Scenario: Controlling solenoids, buzzers, and small relays in white goods and smart home devices. IC Role / Device Role: Low-voltage logic-controlled power switch interfacing between MCU and 5 V/12 V actuator subsystems. Use Value: 50 V VCEO rating provides margin against inductive kickback; 150 mW PD allows sustained duty-cycle operation. |
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 |
|---|---|---|---|
| DDC144EH-7 | R1 = 47 kΩ, R2 = 47 kΩ; higher input impedance; VIN(ON) = 1.9 V same, but IL = 0.18 mA at VI = 5 V (vs. 0.36 mA for DDC124EH-7) | Better suited for ultra-low-power standby interfaces where input current must be minimized. | Select when reducing MCU port loading is critical and slower edge rates are acceptable. |
| DDC114EH-7 | R1 = 10 kΩ, R2 = 10 kΩ; lower input impedance; IL = 0.88 mA at VI = 5 V; VIN(ON) = 3.0 V (higher threshold) | Requires stronger drive signal; better noise immunity in EMI-heavy environments. | Choose for noisy industrial settings where false triggering must be avoided despite higher input current demand. |
Compared with DDC144EH-7 and DDC114EH-7, the DDC124EH-7 strikes a balance: its 22 kΩ bias network delivers moderate input current (0.36 mA) with robust 1.9 V turn-on threshold, making it optimal for general-purpose 3.3 V/5 V digital interfacing without overloading drivers or sacrificing noise margin.
Availability
DDC124EH-7 is available at Aetrix Electronics and suitable for LED driver interfaces, microcontroller GPIO expansion, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for DDC124EH-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 consumer, industrial, and automotive markets.
The DDC series targets cost-sensitive, space-constrained digital interface applications-designed to replace discrete transistor-resistor combinations with standardized, tested, and qualified dual pre-biased devices.
FAQ
What is the maximum operating temperature for DDC124EH-7?
The DDC124EH-7 has an operating junction temperature range of –55 °C to +150 °C. Its thermal resistance (RθJA) is 833 °C/W on FR4 board with recommended pad layout; continuous power dissipation must be derated above 25 °C ambient per the curve in Figure 1 of DS30421 Rev. 5–2.
Can DDC124EH-7 be used with 3.3 V logic inputs?
Yes. With VIN(ON) = 1.9 V (measured at VO = 0.3 V, IO = 5 mA), the DDC124EH-7 reliably turns on from standard 3.3 V CMOS outputs. Its VIN(OFF) = 0.5 V also ensures full cutoff with typical 3.3 V logic low levels (≤ 0.4 V).
Are Pins 1 and 4 internally connected in DDC124EH-7?
Yes. The SOT-563 pinout shows Pins 1 and 4 as emitters of the two NPN transistors, and the schematic diagram in DS30421 confirms they are internally tied together as a common emitter node-enabling shared ground return or dual-sink configurations.
Does DDC124EH-7 require external pull-up resistors on its collector outputs?
No. As a current-sinking NPN switch, the DDC124EH-7 drives its collectors low when active. External pull-up resistors are required only if high-side logic polarity (active-high output) is needed; for active-low loads like LEDs or N-channel MOSFET gates, no pull-ups are necessary.
DDC124EH-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN - Pre-Biased (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 50V
- Resistor - Base (R1):
- 22kOhms
- Resistor - Emitter Base (R2):
- 22kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 56 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 500nA
- Frequency - Transition:
- 250MHz
- Power - Max:
- 150mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
DDC124EH-7 FAQ
1.How can I place an order for DDC124EH-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDC124EH-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 DDC124EH-7 reliable?
The price and inventory of DDC124EH-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDC124EH-7 is usually 5 days.
3.What payment methods are accepted for DDC124EH-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDC124EH-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDC124EH-7?
DDC124EH-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDC124EH-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 DDC124EH-7?
For technical support, including DDC124EH-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDC124EH-7 requirements.
6.How does Aetrix verify that DDC124EH-7 is sourced from the original manufacturer or authorized distributors?
All DDC124EH-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 DDC124EH-7 meets industry standards.
7.What is the process for return or replacement of DDC124EH-7?
All DDC124EH-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDC124EH-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 DDC124EH-7 part is unused and in its original packaging.
Return procedure for DDC124EH-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDC124EH-7 Tags
-
SMUN5311DW1T1G
onsemi
-
UMH9NTN
Rohm Semiconductor
-
PUMH13,115
Nexperia USA Inc.
-
PUMD3-QX
Nexperia USA Inc.
-
PUMD2,115
Nexperia USA Inc.
-
RN4987FE,LF(CT
Toshiba Semiconductor and Storage
-
PUMD12,115
Nexperia USA Inc.
-
PUMD9,115
Nexperia USA Inc.
-
PUMH9,115
Nexperia USA Inc.
-
PUMD3,115
Nexperia USA Inc.
-
DCX114EU-7-F
Diodes Incorporated
-
PUMD13,115
Nexperia USA Inc.
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