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Diodes Incorporated 2DA1774S-7-F
- Part No.:
- 2DA1774S-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
2DA1774S-7-F.pdf
- Description:
- TRANS PNP 50V 0.15A SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:8,132
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Product details
Overview
2DA1774S-7-F 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. It delivers DC current gain (hFE) of 270–560 at VCE = -6V and IC = -1mA, with fT = 140MHz, suited for low-power switching and amplification in space-constrained automotive and industrial control circuits.
For engineers reviewing the 2DA1774S-7-F datasheet, 2DA1774S-7-F pinout, 2DA1774S-7-F application, or 2DA1774S-7-F equivalent, key selection criteria include its AEC-Q101 qualification, ultra-small SOT523 footprint, guaranteed hFE binning (S-grade), ESD robustness (4kV HBM), and thermal resistance of 833°C/W under standard PCB conditions.
Technical Context
This PNP bipolar junction transistor operates in active and saturation regions with defined breakdown limits: V(BR)CBO = -60V, V(BR)CEO = -50V, and V(BR)EBO = -6V. Its fT = 140MHz and Cobo = 4.0–5.0pF support high-frequency small-signal amplification up to ~100MHz in bias-stable configurations.
The device is characterized under pulsed test conditions (≤300µs pulse width, ≤2% duty cycle) for ON/OFF parameters and uses a standardized 1oz copper, single-sided FR-4 PCB layout for thermal ratings. Its JEDEC-compliant construction meets AEC-Q101 stress testing for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -50V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter configuration |
| IC (cont.) | -150mA - Continuous collector current limit defining maximum load drive capability at TA = 25°C |
| hFE | 270–560 - DC current gain range at VCE = -6V, IC = -1mA; enables precise biasing in amplifier stages |
| fT | 140MHz - Transition frequency where |hfe| = 1; confirms usable bandwidth for RF preamp or oscillator buffer roles |
| PD | 150mW - Power dissipation limit on standard PCB; derates linearly above 25°C ambient per Fig. 1 |
| RθJA | 833°C/W - Junction-to-ambient thermal resistance; determines temperature rise under given power load |
| ESD HBM | 4,000V - Human Body Model rating per JESD22-A114; supports handling without special ESD controls |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic case (1.60 × 1.60 × 0.75 mm), weight ≈ 0.002 g, UL 94V-0 rated, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current source terminal in PNP operation; connects to higher potential node in switching or amplification |
| 2 (Base) | B | Control input; negative base current (-IB) required to turn on; typical IB = -5mA for VCE(sat) spec |
| 3 (Collector) | C | Current sink terminal; connects to load or supply return; must remain ≤ -50V relative to emitter |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring PPAP-capable supply chain |
| High V(BR)CBO | -60V rating enables reliable operation in 48V system transients and noise-prone industrial bus environments |
| Three hFE bins (Q/R/S) | S-grade (270–560) ensures tighter gain matching for differential pairs or precision current mirrors |
| Green construction | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); compliant with RoHS 3 and automotive environmental mandates |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Driving LED status indicators and small solenoids in door latch assemblies with 12V battery supply and load dump transients. IC Role / Device Role / Timing Role: PNP switch controlling current path from battery to load; handles reverse-polarity protection and transient clamping via VCEO margin. Use Value: -60V VCBO withstands ISO 7637-2 Pulse 1 (−100V) with margin; SOT523 footprint saves PCB area in tight module layouts. | Use Scenario: Level-shifting and signal inversion between 3.3V microcontroller GPIO and 5V/12V analog sensor outputs in factory automation nodes. IC Role / Device Role / Timing Role: Active-low logic inverter and voltage translator; provides clean digital output with controlled edge rate via hFE-stabilized bias. Use Value: 140MHz fT supports >10MHz signal toggling; 4kV HBM protects against ESD during field sensor cable handling. |
| Portable Medical Monitor | Smart HVAC Actuator |
Use Scenario: Low-power alarm buzzer driver and LED backlight dimming control in battery-powered patient monitors. IC Role / Device Role / Timing Role: Saturation-mode switch enabling efficient current sourcing to piezo buzzers and discrete LEDs. Use Value: VCE(sat) ≤ -0.5V at IC/IB = -50mA/-5mA minimizes conduction loss; 150mW rating allows sustained operation within thermal budget. | Use Scenario: Controlling small DC motors and position feedback relays in residential HVAC damper actuators. IC Role / Device Role / Timing Role: High-side switch for motor enable/disable; interfaces with PWM controller to regulate actuator speed. Use Value: -150mA IC supports typical 100mA motor stall currents; AEC-Q101 qualification ensures reliability across temperature cycling in duct environments. |
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 |
|---|---|---|---|
| DXT3906-7 | SOT-323 package (larger footprint); hFE = 100–300 (lower gain bin); VCEO = -40V | Not suitable for 48V systems or designs requiring >120MHz fT | Select if board layout allows SOT-323 and gain tolerance ≥100 suffices |
| MMBT3906LT1G | SOT-23 package; hFE = 100–300; VCEO = -40V; no AEC-Q101 qualification | Lacks automotive qualification and higher-voltage margin needed for engine bay use | Prefer for cost-sensitive consumer applications where AEC-Q101 and -50V rating are not required |
Compared with DXT3906-7 and MMBT3906LT1G, the 2DA1774S-7-F offers superior voltage rating, tighter hFE binning, AEC-Q101 compliance, and smaller SOT523 footprint-making it optimal for space- and reliability-critical automotive and industrial signal switching.
Availability
2DA1774S-7-F is available at Aetrix Electronics and suitable for automotive door modules, industrial sensor interfaces, portable medical monitors, and smart HVAC actuators requiring stable component supply despite its obsolete status-supported via legacy inventory and cross-qualified alternatives.
Supply support for 2DA1774S-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The 2DA1774 series belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, engineered specifically for automotive body electronics and industrial control applications demanding high reliability, compact packaging, and consistent parametric performance across temperature.
FAQ
Is 2DA1774S-7-F still in production?
No-2DA1774S-7-F is marked "Obsolete" in Diodes' official ordering information. However, Aetrix Electronics maintains legacy stock and supports design continuity through verified cross-references and engineering guidance for migration paths to active equivalents like 2DA1774R-7-F or functionally aligned alternatives.
What does the "S" suffix indicate in 2DA1774S-7-F?
"S" denotes the highest hFE bin: 270–560 at VCE = -6V and IC = -1mA. This binning enables tighter matching in differential pairs, improved current mirror accuracy, and more predictable biasing in low-noise amplifier stages compared to Q (120–270) or R (180–390) grades.
Can 2DA1774S-7-F replace MMBT3906 in existing designs?
Yes, with caveats: both are PNP transistors, but 2DA1774S-7-F has higher VCEO (-50V vs. -40V), higher hFE, and AEC-Q101 qualification. The SOT523 footprint is smaller than SOT-23, so PCB redesign is required. Electrical substitution is viable where voltage margin and gain consistency are critical.
What is the meaning of "-7-F" in the part number?
"-7" indicates tape-and-reel packaging on a 7-inch reel; "-F" signifies Diodes' "Green" (halogen- and antimony-free) compliance per their internal specification. This marking confirms full RoHS 3 compliance and alignment with automotive environmental standards such as ELV and IMDS reporting requirements.
2DA1774S-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 270 @ 1mA, 6V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
2DA1774S-7-F FAQ
1.How can I place an order for 2DA1774S-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for 2DA1774S-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 2DA1774S-7-F reliable?
The price and inventory of 2DA1774S-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 2DA1774S-7-F is usually 5 days.
3.What payment methods are accepted for 2DA1774S-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2DA1774S-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2DA1774S-7-F?
2DA1774S-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2DA1774S-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 2DA1774S-7-F?
For technical support, including 2DA1774S-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2DA1774S-7-F requirements.
6.How does Aetrix verify that 2DA1774S-7-F is sourced from the original manufacturer or authorized distributors?
All 2DA1774S-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 2DA1774S-7-F meets industry standards.
7.What is the process for return or replacement of 2DA1774S-7-F?
All 2DA1774S-7-F units undergo pre-shipment inspection (PSI). If there is an issue with 2DA1774S-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 2DA1774S-7-F part is unused and in its original packaging.
Return procedure for 2DA1774S-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2DA1774S-7-F Tags
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