My Inquiry
My Account
Diodes Incorporated 2DA1201YQTC
- Part No.:
- 2DA1201YQTC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
2DA1201YQTC.pdf
- Description:
- TRANS PNP 120V 0.8A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:13
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
2DA1201YQTC from Diodes Incorporated is a 120V PNP silicon transistor in SOT89 package, rated for -800mA continuous collector current, -120V VCEO, and minimum hFE of 120 at -100mA, designed for high-voltage switching in automotive power management circuits.
For engineers reviewing the 2DA1201YQTC datasheet, 2DA1201YQTC pinout, 2DA1201YQTC application, or 2DA1201YQTC equivalent, key selection criteria include breakdown voltage margin, thermal resistance (RθJA = 83°C/W), SOA compliance at elevated ambient, AEC-Q101 qualification, and SOT89 lead-frame thermal performance under pulsed load conditions.
Technical Context
This PNP bipolar junction transistor operates with emitter-grounded configuration and supports high-voltage linear or saturated switching up to -120V collector-emitter potential. Its gain stability (hFE ≥ 120 @ -100mA) and low VCE(sat) (-1V @ -500mA/-50mA) enable efficient current control in DC-DC pre-regulators and load dump protection stages.
Thermally, it features RθJL = 18.3°C/W to leads and is characterized for operation from -55°C to +150°C. The device meets JEDEC JESD22-A114 HBM ESD rating ≥8kV and is qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -120 V - Withstands full automotive battery transients including load dump without breakdown |
| IC (cont.) | -800 mA - Supports medium-power switching loads such as solenoid drivers and fan controllers |
| hFE | 120–240 - Ensures stable base drive requirements across temperature and production lot variation |
| VCE(sat) | -1 V @ -500mA/-50mA - Limits conduction loss to ≤0.5W at rated current, easing thermal design |
| RθJA | 83 °C/W - Requires ≥25 mm × 25 mm 1 oz copper pad for safe 1.5W dissipation at +25°C ambient |
| fT | 160 MHz - Enables use in moderate-speed switching (≤100 kHz PWM) with controlled turn-off |
| ESD HBM | ≥8,000 V - Robust handling during automated assembly and board-level integration |
Pinout & Package
Package: SOT89 - Surface-mount plastic package with exposed collector tab for thermal conduction; 0.05 g mass; UL 94V-0 rated; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Current source terminal | Connected to higher potential rail; carries full load current into external load |
| Pin 2 (Base) | Control input | Receives negative bias current to saturate or cut off transistor; requires current-limiting resistor |
| Pin 3 (Collector) | Power return path | Internally connected to exposed metal tab; must be soldered to thermal pad for RθJL = 18.3°C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use per stress test requirements (HTOL, TC, HAST, etc.) |
| High BVCEO | -120 V rating provides 2× margin over 42V commercial truck systems and 3× over 12V/24V passenger vehicles |
| Green compound | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) compliant with automotive environmental mandates |
| Low RθJL | 18.3°C/W enables direct heat transfer from junction to PCB copper, reducing thermal bottleneck vs. RθJA-only paths |
Applications
| Automotive Load Dump Protection | Industrial DC-DC Pre-regulator |
|---|---|
Use Scenario: Protects downstream 5V/3.3V regulators from ISO 7637-2 Pulse 5a (120V transient) in vehicle power distribution modules. IC Role / Device Role / Timing Role: High-voltage PNP switch clamping transient energy to ground via Zener-controlled base bias. Use Value: Leverages -120V VCEO and 8kV HBM to absorb >100V spikes without failure, eliminating need for external TVS stacking. | Use Scenario: Regulates unregulated 24V industrial bus down to 15V intermediate rail before buck converter stage. IC Role / Device Role / Timing Role: Linear pass element operating in active region, controlled by error amplifier feedback loop. Use Value: Stable hFE (120–240) ensures predictable base drive across -40°C to +125°C, minimizing output drift. |
| Brushed DC Motor Brake Control | High-Side Solenoid Driver |
Use Scenario: Rapidly shorts motor terminals to ground during dynamic braking in HVAC actuators and seat adjusters. IC Role / Device Role / Timing Role: Fast-switching PNP configured as emitter-follower to sink brake current through motor windings. Use Value: 440 ns storage time and 42 ns fall time enable sub-1 µs turn-off, preventing back-EMF overshoot and MOSFET shoot-through risk. | Use Scenario: Drives 12V/500mA fuel injector or transmission solenoid in engine control units. IC Role / Device Role / Timing Role: High-side switch with emitter tied to battery rail, collector driving solenoid to ground. Use Value: -1V VCE(sat) at -500mA limits power loss to 500 mW, allowing operation without heatsink in sealed ECU enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX951 | VCEO = -100V, hFE = 100–300, RθJA = 125°C/W, SOT89 package | Lacks AEC-Q101 qualification; lower voltage margin reduces robustness against load dump | Acceptable for non-automotive industrial use where cost is prioritized over transient immunity |
| MJD127 | VCEO = -100V, IC = -2A, TO-252 package, RθJA = 60°C/W | Larger footprint and different thermal interface; not AEC-Q101 qualified in standard grade | Suitable when higher current headroom is needed but automotive qualification is waived |
Compared with ZTX951 and MJD127, the 2DA1201YQTC uniquely combines AEC-Q101 compliance, -120V rating, and SOT89 thermal efficiency-making it the only choice for space-constrained, thermally demanding automotive modules requiring guaranteed transient resilience.
Availability
2DA1201YQTC is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC-DC pre-regulation, brushed motor braking, and high-side solenoid driving requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 2DA1201YQTC 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 components for automotive, industrial, and computing markets.
The 2DA1201YQTC belongs to Diodes' AEC-Q101-qualified bipolar transistor product line, engineered specifically for high-voltage switching in harsh-environment automotive subsystems where voltage margin, thermal reliability, and process consistency are critical.
FAQ
What is the maximum allowable case temperature for continuous operation?
The 2DA1201YQTC has a maximum junction temperature of +150°C and is rated for operation up to +150°C case temperature when mounted on a 25 mm × 25 mm 1 oz copper pad. Derating begins above +85°C ambient, with maximum power dropping linearly to zero at +150°C ambient per the published derating curve.
Is the SOT89 package lead finish compatible with lead-free reflow processes?
Yes-the device features matte tin-plated leads qualified to MIL-STD-202, Method 208, and supports standard Pb-free reflow profiles (JEDEC J-STD-020). The moisture sensitivity level is Class 1, meaning floor life is unlimited at ≤30°C/60% RH, eliminating bake requirements prior to assembly.
How does the 2DA1201YQTC perform under repetitive pulse conditions?
Under pulsed conditions (≤300 µs width, ≤2% duty cycle), the device supports peak collector current up to -3A and maintains VCE(sat) ≤ -1.2V. Safe operating area curves confirm reliable operation at -80V/-1A pulses, making it suitable for PWM-driven inductive loads like fuel injectors and relays.
Can this transistor replace NPN devices in existing designs?
No-it is a PNP device and cannot directly substitute for NPN transistors without circuit topology changes. In high-side configurations, it replaces NPNs used with charge pumps or level shifters; polarity reversal of bias networks and load connections is mandatory to maintain correct conduction logic and avoid latch-up.
2DA1201YQTC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 800 mA
- Voltage - Collector Emitter Breakdown (Max):
- 120 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 100mA, 5V
- Power - Max:
- 1.5 W
- Frequency - Transition:
- 160MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
2DA1201YQTC FAQ
1.How can I place an order for 2DA1201YQTC through Aetrix?
Please submit a Request for Quotation (RFQ) for 2DA1201YQTC 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 2DA1201YQTC reliable?
The price and inventory of 2DA1201YQTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2DA1201YQTC is usually 5 days.
3.What payment methods are accepted for 2DA1201YQTC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2DA1201YQTC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2DA1201YQTC?
2DA1201YQTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2DA1201YQTC 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 2DA1201YQTC?
For technical support, including 2DA1201YQTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2DA1201YQTC requirements.
6.How does Aetrix verify that 2DA1201YQTC is sourced from the original manufacturer or authorized distributors?
All 2DA1201YQTC 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 2DA1201YQTC meets industry standards.
7.What is the process for return or replacement of 2DA1201YQTC?
All 2DA1201YQTC units undergo pre-shipment inspection (PSI). If there is an issue with 2DA1201YQTC, 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 2DA1201YQTC part is unused and in its original packaging.
Return procedure for 2DA1201YQTC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2DA1201YQTC Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
