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Diodes Incorporated DXT5401-13
- Part No.:
- DXT5401-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
DXT5401-13.pdf
- Description:
- TRANS PNP 150V 0.6A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
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Product details
Overview
DXT5401-13 from Diodes Incorporated is a 150V PNP small-signal transistor in SOT89 package, rated for -600mA collector current and -150V VCEO, designed for medium-power switching and linear amplification in industrial power supplies and analog signal conditioning circuits.
For engineers reviewing the DXT5401-13 datasheet, DXT5401-13 pinout, DXT5401-13 application, or DXT5401-13 equivalent, key selection criteria include breakdown voltage margin, saturation voltage at high IC, thermal resistance (125°C/W), DC current gain variation across operating current, and SOT89 thermal pad layout compatibility.
Technical Context
This PNP bipolar junction transistor operates with emitter-grounded configuration in switching and Class-A amplifier topologies. Its -150V VCEO rating supports operation in flyback snubbers and high-side switch drivers, while its fT of 100–300 MHz enables stable gain up to mid-VHF range under bias conditions.
The device exhibits hFE = 50–240 across IC = -1mA to -50mA and VCE = -5V, with VCE(SAT) ≤ -0.5V at IC = -50mA/IB = -5mA - enabling low-loss conduction in pulse-width modulated loads and relay drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -150 V: Enables safe operation in 100–120V AC line-derived DC rails with margin against transients. |
| IC | -600 mA: Supports continuous load switching up to ~0.6A in TO-220-replacement applications using SOT89 thermal pad. |
| PD | 1 W @ TA = +25°C: Requires minimum recommended pad (MRP) on 1oz copper for full derating per Fig. 1. |
| RθJA | 125 °C/W: Limits usable power to ~400 mW at 70°C ambient without heatsinking. |
| fT | 100–300 MHz: Validates suitability for RF pre-driver stages and broadband audio output buffering. |
| VBE(SAT) | -1.0 V max @ IC = -50mA: Ensures predictable base drive requirements in saturated-switch designs. |
| hFE | 50–240: Provides design flexibility across bias points - e.g., hFE ≈ 200 at IC = -10mA for low-distortion amplifiers. |
Pinout & Package
SOT89 package with exposed collector tab (pin 1), emitter (pin 2), and base (pin 3) - thermally optimized for PCB copper pour attachment. Molded green compound, UL 94V-0 rated, 0.055g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Tab) | Collector | Electrically and thermally connected to metal tab; must be soldered to copper pour for thermal management and electrical reference. |
| Pin 2 | Emitter | Common reference node in common-emitter configurations; ties directly to ground or negative rail in PNP switching. |
| Pin 3 | Base | Current-controlled input; requires series resistor to limit IB and ensure saturation or linear operation per hFE curve. |
Key Features
| Feature | Design Value |
|---|---|
| High breakdown voltage | VCEO = -150 V provides >2× margin over 60–75V industrial bus rails, reducing need for external clamping. |
| High current capability | IC = -600 mA allows direct driving of solenoids, relays, and LED strings without secondary gain stages. |
| Thermally enhanced SOT89 | Exposed collector tab enables 1W dissipation with proper PCB layout - outperforms standard SOT23 by >3× power handling. |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb), meeting IPC-1752A Tier 2 reporting requirements. |
Applications
| Industrial Power Supply Control | Linear Audio Amplifier Stage |
|---|---|
Use Scenario: Regulating auxiliary 12–24V rails in DIN-rail mounted SMPS units with wide input range. IC Role / Device Role / Timing Role: PNP pass transistor in series-regulator topology, sinking current from unregulated rail to output. Use Value: -150V VCEO withstands reflected spikes during transformer reset; -0.5V VCE(SAT) minimizes dropout and heat generation at 400mA load. | Use Scenario: Output stage in low-noise instrumentation-grade headphone amplifier with ±15V rails. IC Role / Device Role / Timing Role: Complementary PNP emitter-follower driver paired with DXT5551 NPN for Class-AB push-pull output. Use Value: hFE ≥ 200 at IC = -10mA ensures stable bias current matching; NF ≤ 8 dB preserves SNR in 20Hz–20kHz band. |
| DC Motor Direction Control | High-Voltage Logic Interface |
Use Scenario: Bidirectional H-bridge half-bridge leg for 24–48V brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: High-side PNP switch controlling motor phase connection to positive rail in discrete bridge implementation. Use Value: -160V VCBO prevents avalanche failure during inductive kickback; RθJA = 125°C/W allows 500mA continuous current with 25mm² copper pad. | Use Scenario: Level-shifting interface between 3.3V microcontroller GPIO and 48V PLC I/O backplane signals. IC Role / Device Role / Timing Role: Inverting open-collector driver translating logic-low to active-high 48V output with fast turn-off. Use Value: fT ≥ 100 MHz ensures <100 ns propagation delay; Cobo = 6 pF limits capacitive loading on high-impedance control lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD44H11T4G | VCEO = -80V, IC = -8A, TO-252 package, higher power but lower voltage rating. | Not suitable for >80V bus applications; better for high-current, low-voltage motor drives. | Select only if system voltage ≤ 60V and thermal mass permits TO-252 mounting. |
| ZTX951 | VCEO = -120V, IC = -1A, SOT89 package, hFE = 100–300, no specified fT. | Lacks guaranteed fT spec; acceptable for DC/low-frequency switching but not RF-audio. | Prefer when bandwidth is not critical and higher IC margin is needed within same footprint. |
Compared with DXT5401-13, MJD44H11T4G trades voltage headroom for current capacity and thermal mass, while ZTX951 offers higher IC but lacks verified RF performance - making DXT5401-13 optimal for 100–150V systems requiring both switching speed and ruggedness.
Availability
DXT5401-13 is available at Aetrix Electronics and suitable for industrial power supplies, analog signal conditioning, DC motor control, and high-voltage logic interfacing requiring stable component supply and long-term obsolescence planning.
Supply support for DXT5401-13 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 centers across Asia and manufacturing in China, Taiwan, and the US.
The DXT5401 belongs to Diodes' high-voltage PNP transistor product line, engineered specifically for robustness in industrial power conversion, motor control, and analog signal path applications where reliability under voltage stress is critical.
FAQ
What is the maximum safe operating voltage for DXT5401-13 in continuous DC applications?
The absolute maximum VCEO is -150 V, but continuous operation should be limited to ≤ -120 V to maintain reliability margin per JEDEC JESD78 guidelines. Derating is required above 70°C ambient due to RθJA = 125°C/W - at 100°C junction, max usable VCE drops to ~-95 V at IC = -500 mA.
Can DXT5401-13 replace a TO-92 transistor like BC557 in existing designs?
No - DXT5401-13 uses SOT89 with exposed collector tab and higher power dissipation capability; pinout differs (C-E-B vs. E-B-C), and thermal requirements demand PCB copper pour. Direct replacement requires board redesign, including pad layout, trace width, and base drive resistor recalculation for hFE variance.
Is the SOT89 package lead-free and RoHS 3 compliant?
Yes - DXT5401-13 is fully RoHS 3 compliant (2015/863/EU), with <900 ppm bromine/chlorine, <1000 ppm antimony, and zero intentionally added lead. Matte tin-plated leads meet MIL-STD-202 Method 208 solderability requirements.
What is the typical noise figure and where is it measured?
The noise figure is ≤ 8.0 dB, measured at VCE = -5.0 V, IC = -200 µA, RS = 10 Ω, and f = 1.0 kHz. This value applies to low-level signal amplification in audio and sensor front-ends where base resistance and flicker noise dominate.
DXT5401-13 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):
- 600 mA
- Voltage - Collector Emitter Breakdown (Max):
- 150 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 10mA, 5V
- Power - Max:
- 1 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
DXT5401-13 FAQ
1.How can I place an order for DXT5401-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DXT5401-13 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 DXT5401-13 reliable?
The price and inventory of DXT5401-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DXT5401-13 is usually 5 days.
3.What payment methods are accepted for DXT5401-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DXT5401-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DXT5401-13?
DXT5401-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DXT5401-13 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 DXT5401-13?
For technical support, including DXT5401-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DXT5401-13 requirements.
6.How does Aetrix verify that DXT5401-13 is sourced from the original manufacturer or authorized distributors?
All DXT5401-13 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 DXT5401-13 meets industry standards.
7.What is the process for return or replacement of DXT5401-13?
All DXT5401-13 units undergo pre-shipment inspection (PSI). If there is an issue with DXT5401-13, 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 DXT5401-13 part is unused and in its original packaging.
Return procedure for DXT5401-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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