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Diodes Incorporated DXTN22040CFGQ-7
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- Part No.:
- DXTN22040CFGQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- 8-PowerVDFN
- Datasheet:
-
DXTN22040CFGQ-7.pdf
- Description:
- TRANS NPN 40V 2A POWERDI3
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
DXTN22040CFGQ from Diodes Incorporated is a 40V NPN low-VCE(sat) transistor in PowerDI3333-8 package, rated for 2A continuous collector current and 3A peak pulse current, with VCE(sat) < 220 mV at 1 A, BVCEO > 40 V, and AEC-Q101 qualified for automotive use in DC-DC converters and supply-line switching.
For engineers reviewing the DXTN22040CFGQ datasheet, DXTN22040CFGQ pinout, DXTN22040CFGQ application, or DXTN22040CFGQ equivalent, this part supports high-density power switching where low saturation voltage, thermal efficiency, and wettable flank optical inspection are critical design requirements.
Technical Context
This NPN bipolar junction transistor delivers high-current switching performance with thermally optimized PowerDI3333-8 packaging enabling RθJL = 7.4 °C/W and RθJA = 55 °C/W on 25 mm × 25 mm 2 oz copper PCBs. Its hFE ranges from 329 (IC = 100 mA) to 80 (IC = 2 A), supporting stable gain across load conditions.
With fT = 200 MHz, tstorage = 728 ns, and fast switching times (trise = 2.9 ns, tfall = 32.6 ns), it operates efficiently in medium-frequency switching applications such as LDO regulation and LCD backlight drivers while maintaining robust ESD protection (HBM = 4 kV, CDM = 1 kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 V - Maximum allowable collector-emitter voltage before breakdown; enables use in 36 V automotive systems with margin. |
| IC | 2 A continuous - Sustains steady-state load current without derating at TA = 25 °C on adequate copper area. |
| VCE(sat) | < 220 mV @ 1 A - Minimizes conduction loss and self-heating in high-duty-cycle switching nodes. |
| hFE | 329 @ IC = 100 mA - Ensures reliable base drive margin for low-power control logic interfacing. |
| RθJL | 7.4 °C/W - Low junction-to-leads thermal resistance enables direct heat transfer from collector tab to PCB copper. |
| ESD HBM | 4,000 V - Meets JEDEC JESD22-A114; reduces risk of handling damage during SMT assembly. |
Pinout & Package
Package: PowerDI®3333-8 (SWP, Type UX), surface-mount, thermally enhanced plastic case with wettable flank leads and matte tin plating for automated optical inspection and solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (E) | Emitter | Primary current return path; tied to ground or low-side reference in common-emitter switch configurations. |
| Pin 2 (B) | Base | Control input requiring ~100 mA drive for full saturation at 2 A collector current. |
| Pins 3–5 (C) | Collector (3-terminal parallel) | High-current output node; electrically and thermally connected to exposed metal tab for efficient heat dissipation. |
| Pins 6–8 (E) | Emitter (3-terminal parallel) | Redundant emitter connections reduce bond wire inductance and improve current sharing in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 180 mV typical at IC = 1 A - Reduces power loss by >30% vs. standard 300 mV transistors in 1 A switching paths. |
| AEC-Q101 qualification | Qualified for automotive applications with PPAP capability and IATF16949 manufacturing - supports Tier-1 supply chain compliance. |
| Wettable flank leads | Side-wettable terminations enable AOI verification of solder fillet integrity - improves first-pass yield in high-reliability SMT lines. |
| Green compound & lead-free | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb); RoHS 3 compliant - meets global environmental mandates. |
Applications
| DC-DC Conversion | Supply Line Switching |
|---|---|
Use Scenario: Step-down buck converter output stage in automotive infotainment power supplies. IC Role / Device Role / Timing Role: Low-side synchronous rectifier switch replacing Schottky diode to reduce conduction loss. Use Value: 220 mV VCE(sat) cuts I²R losses by ~45% vs. 450 mV diode at 1.5 A, improving efficiency by 1.8% at 12 V input. |
Use Scenario: Reverse-polarity and overvoltage protection circuit in vehicle body control modules. IC Role / Device Role / Timing Role: High-current NPN switch controlling 12 V supply rail to downstream ECUs. Use Value: 2 A continuous rating and 40 V VCEO support 24 V truck systems with transient margin; RθJL = 7.4 °C/W prevents thermal shutdown under sustained load. |
| Low Dropout Regulation | LCD Backlighting |
Use Scenario: Pass element in linear regulator supplying 3.3 V to microcontroller core from 5 V rail in ADAS camera module. IC Role / Device Role / Timing Role: Adjustable series pass transistor with external base bias network. Use Value: Low VCE(sat) allows <100 mV dropout at 500 mA, enabling stable regulation even as input decays to 3.4 V. |
Use Scenario: Current sink for white LED strings in instrument cluster backlighting. IC Role / Device Role / Timing Role: Constant-current switch driven by PWM controller to modulate brightness. Use Value: Fast tfall = 32.6 ns and tstorage = 728 ns ensure clean PWM edges up to 20 kHz, eliminating visible flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DXTP22040CFGQ | Complementary PNP device with identical VCEO, IC, and package; VEC(sat) = 220 mV @ 1 A. | Used in complementary emitter-follower or H-bridge topologies requiring matched NPN/PNP pairs. | Select when designing push-pull or bridge circuits needing symmetrical saturation behavior. |
| ZXTN2020ZTA | SOT-89 package, 20 V VCEO, 3 A IC, VCE(sat) = 150 mV @ 1 A; no AEC-Q101 qualification. | Limited to non-automotive industrial or consumer power rails ≤ 16 V. | Choose only for cost-sensitive, non-automotive designs where 40 V rating and automotive qualification are unnecessary. |
Compared with DXTP22040CFGQ, DXTN22040CFGQ provides essential NPN polarity for low-side switching; versus ZXTN2020ZTA, it trades slightly higher VCE(sat) for 2× voltage rating, AEC-Q101 compliance, and superior thermal performance via PowerDI3333-8's collector-tab cooling.
Availability
DXTN22040CFGQ is available at Aetrix Electronics and suitable for automotive power management, DC-DC conversion, and LCD backlighting applications requiring stable component supply, AEC-Q101 compliance, and long-term production continuity.
Supply support for DXTN22040CFGQ 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-performance, high-reliability components for automotive, industrial, and computing markets.
DXTN22040CFGQ belongs to Diodes' Power Transistor product line, engineered specifically for high-efficiency, thermally constrained switching in automotive and industrial power systems where low VCE(sat) and AEC-Q101 validation are mandatory.
FAQ
What is the maximum operating temperature for DXTN22040CFGQ?
The DXTN22040CFGQ has an operating junction temperature range of –55 °C to +150 °C. Its thermal resistance RθJA is 55 °C/W when mounted on 25 mm × 25 mm 2 oz copper, allowing safe operation at 1.1 W power dissipation up to +125 °C ambient with appropriate PCB layout.
Is DXTN22040CFGQ pin-compatible with standard SOT-23 or TO-252 transistors?
No - DXTN22040CFGQ uses the proprietary PowerDI3333-8 (SWP, Type UX) package with 8 terminals and an exposed collector tab. It is not mechanically or electrically pin-compatible with SOT-23, TO-252, or other common transistor packages; PCB layout must follow Diodes' recommended pad dimensions.
Does DXTN22040CFGQ require a heatsink in typical automotive applications?
Not typically - its RθJL = 7.4 °C/W enables direct thermal coupling to PCB copper. With ≥25 mm² of 2 oz copper connected to the collector tab, it dissipates 1.1 W at <30 °C rise above ambient, eliminating need for external heatsinks in most 2 A switching applications.
How does the wettable flank feature improve manufacturing yield?
The wettable flank geometry on all eight leads allows automated optical inspection (AOI) systems to verify solder fillet formation on side surfaces, detecting insufficient solder, bridging, or tombstoning with >99.5% accuracy - reducing rework in high-volume automotive SMT lines.
DXTN22040CFGQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-PowerVDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 50nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 500mA, 2V
- Power - Max:
- 1.1 W
- Frequency - Transition:
- 200MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- PowerDI3333-8 (SWP) Type UX
DXTN22040CFGQ-7 FAQ
1.How can I place an order for DXTN22040CFGQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DXTN22040CFGQ-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 DXTN22040CFGQ-7 reliable?
The price and inventory of DXTN22040CFGQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DXTN22040CFGQ-7 is usually 5 days.
3.What payment methods are accepted for DXTN22040CFGQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DXTN22040CFGQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DXTN22040CFGQ-7?
DXTN22040CFGQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DXTN22040CFGQ-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 DXTN22040CFGQ-7?
For technical support, including DXTN22040CFGQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DXTN22040CFGQ-7 requirements.
6.How does Aetrix verify that DXTN22040CFGQ-7 is sourced from the original manufacturer or authorized distributors?
All DXTN22040CFGQ-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 DXTN22040CFGQ-7 meets industry standards.
7.What is the process for return or replacement of DXTN22040CFGQ-7?
All DXTN22040CFGQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DXTN22040CFGQ-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 DXTN22040CFGQ-7 part is unused and in its original packaging.
Return procedure for DXTN22040CFGQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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