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Diodes Incorporated 2DA1774Q-7
- Part No.:
- 2DA1774Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
2DA1774Q-7.pdf
- Description:
- TRANS PNP 50V 0.15A SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:154
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Product details
Overview
2DA1774Q-7 from Diodes Incorporated is a 60V PNP small-signal transistor in SOT523 package, rated for -150mA continuous collector current, -50V VCEO, and 150mW power dissipation, with hFE = 120–270 at -1mA/-6V, used in automotive sensor interface and low-power switching circuits.
For engineers reviewing the 2DA1774Q-7 datasheet, 2DA1774Q-7 pinout, 2DA1774Q-7 application, or 2DA1774Q-7 equivalent, key selection criteria include its AEC-Q101 qualification, ultra-small SOT523 footprint, -60V VCBO breakdown rating, ESD HBM tolerance of 4kV, and complementary NPN pairing with 2DC4617Q.
Technical Context
This PNP bipolar junction transistor operates in linear amplification and saturated switching modes, with guaranteed DC current gain across three gain bins (Q/R/S) and specified saturation voltage of ≤ -0.5V at -50mA/-5mA drive. Its thermal resistance of 833°C/W reflects performance on minimal 1oz copper FR-4 layouts.
Designed for high-reliability automotive applications, it meets JEDEC standards referenced in AEC-Q101, features halogen- and antimony-free "Green" molding compound (UL 94V-0), and supports moisture sensitivity level 1 per J-STD-020 - enabling reflow compatibility without dry-pack requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -50 V: Maximum safe collector-emitter voltage before breakdown under open-base conditions |
| IC (cont) | -150 mA: Continuous collector current handling capacity at 25°C ambient |
| PD | 150 mW: Power dissipation limit on standard PCB layout; derates linearly above 25°C |
| hFE | 120–270: DC current gain range at VCE = -6V, IC = -1mA, defining bias stability in amplifier stages |
| fT | 140 MHz: Current gain-bandwidth product indicating usable frequency limit for small-signal amplification |
| VCE(sat) | ≤ -0.5 V: Saturation voltage at IC = -50mA/IB = -5mA, critical for low-loss switching in digital logic interfaces |
| ESD HBM | 4,000 V: Human Body Model withstand level, supporting robust handling in automotive assembly lines |
Pinout & Package
SOT523 is a 3-pin ultra-small surface-mount plastic package measuring 1.60 × 1.60 × 0.75 mm (L × W × H), with matte tin-plated leads solderable per MIL-STD-202, Method 208, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current exit node in PNP operation; connected to higher potential rail in common-emitter switch configurations |
| 2 (Base) | B | Control terminal; negative bias relative to emitter required to forward-bias base-emitter junction |
| 3 (Collector) | C | Current entry node; tied to load or signal source in switching or amplification topologies |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including PPAP capability and IATF 16949 manufacturing |
| Ultra-small SOT523 footprint | 1.6 × 1.6 mm outline enables high-density routing in space-constrained ECUs and ADAS modules |
| High VCBO (-60V) | Supports operation in 42V automotive systems and transient-tolerant industrial control inputs |
| Halogen- and antimony-free "Green" compound | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm for eco-compliant production |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving window lift motor enable signals and door lock actuator coils in body control modules. IC Role / Device Role / Timing Role: PNP switch controlling 12V/24V loads via microcontroller GPIO with inverted logic. Use Value: -50V VCEO and -60V VCBO ensure immunity to load-dump transients up to ISO 7637-2 Pulse 5a. |
Use Scenario: Level-shifting and signal inversion between 3.3V microcontrollers and 5V/12V analog sensor outputs. IC Role / Device Role / Timing Role: Discrete PNP inverter stage providing rail-to-rail output swing and fast edge response. Use Value: 140 MHz fT and ≤ -0.5V VCE(sat) support clean 100 kHz PWM modulation for analog sensor excitation. |
| Portable Medical Monitor | Smart Lighting Control |
Use Scenario: Isolating and buffering biopotential amplifier enable lines in battery-powered ECG front-ends. IC Role / Device Role / Timing Role: Low-leakage PNP switch enabling/disabling analog signal paths with minimal offset injection. Use Value: -100 nA ICBO and -100 nA IEBO prevent leakage-induced baseline drift in high-impedance measurement nodes. |
Use Scenario: Driving MOSFET gate resistors and LED string current sense shunts in DALI-compatible lighting drivers. IC Role / Device Role / Timing Role: Biasing network component and active pull-up in digital control logic with 3.3V/5V mixed-voltage domains. Use Value: hFE binning (Q/R/S) allows precise current mirror matching across multiple channels in multi-zone dimming systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2DC4617Q-7-F | Complementary NPN type; VCEO = +50V, hFE = 120–270, same SOT523 package | Used where NPN topology required (e.g., low-side switching, emitter-follower buffers) | Select when circuit requires NPN polarity or complementary pair design with 2DA1774Q-7 |
| BC807-40,215 | Higher hFE (250–630), same VCEO (-45V), but only AEC-Q100 qualified (not Q101), SOT23 package | Larger footprint; not qualified to AEC-Q101; lower VCBO (-50V vs. -60V) | Choose only if higher gain is prioritized over automotive qualification and transient margin |
Compared with 2DC4617Q-7-F and BC807-40,215, the 2DA1774Q-7 uniquely combines AEC-Q101 qualification, -60V VCBO, and SOT523 miniaturization - making it optimal for space-constrained, high-transient automotive signal conditioning where PNP polarity is mandatory.
Availability
2DA1774Q-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical monitoring systems requiring stable component supply and full traceability.
Supply support for 2DA1774Q-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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The 2DA1774Q-7 belongs to Diodes' AEC-Q101-qualified small-signal transistor family, engineered specifically for automotive signal switching, sensor interfacing, and power management functions in harsh-environment ECUs.
FAQ
Is the 2DA1774Q-7 pin-compatible with other SOT523 PNP transistors?
Yes - the 2DA1774Q-7 uses standard SOT523 pinout (Emitter-Base-Collector on pins 1-2-3), matching industry-standard layout footprints. Its mechanical dimensions (1.60 × 1.60 × 0.75 mm) and lead finish comply with JEDEC MO-203AB, ensuring drop-in replacement compatibility with other SOT523-packaged PNP devices on verified board layouts.
What is the maximum operating temperature for continuous use?
The 2DA1774Q-7 has an operating junction temperature range of -55°C to +150°C. At ambient temperatures above +25°C, power dissipation must be linearly derated from 150 mW using RθJA = 833°C/W, reaching zero dissipation at approximately +125°C ambient on standard PCB conditions.
Does the "Q" suffix indicate automotive qualification?
Yes - the "Q" in 2DA1774Q-7 denotes AEC-Q101 qualification. This part is manufactured in IATF 16949-certified facilities, supports PPAP documentation, and meets stress-test requirements for temperature cycling, humidity, and mechanical shock defined in AEC-Q101 Rev D.
Can this transistor replace a BC857 in existing designs?
Only with verification: while both are PNP SOT-23/SOT523 transistors, the 2DA1774Q-7 has higher VCBO (-60V vs. -50V), lower VCE(sat) (-0.5V vs. -0.65V), and tighter hFE binning, but differs in package size (SOT523 vs. SOT23). Layout redesign is required due to smaller footprint and different pad geometry.
2DA1774Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 150 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 1mA, 6V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
2DA1774Q-7 FAQ
1.How can I place an order for 2DA1774Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2DA1774Q-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 2DA1774Q-7 reliable?
The price and inventory of 2DA1774Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2DA1774Q-7 is usually 5 days.
3.What payment methods are accepted for 2DA1774Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2DA1774Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2DA1774Q-7?
2DA1774Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2DA1774Q-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 2DA1774Q-7?
For technical support, including 2DA1774Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2DA1774Q-7 requirements.
6.How does Aetrix verify that 2DA1774Q-7 is sourced from the original manufacturer or authorized distributors?
All 2DA1774Q-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 2DA1774Q-7 meets industry standards.
7.What is the process for return or replacement of 2DA1774Q-7?
All 2DA1774Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with 2DA1774Q-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 2DA1774Q-7 part is unused and in its original packaging.
Return procedure for 2DA1774Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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