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Diodes Incorporated DXT751-13
- Part No.:
- DXT751-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
DXT751-13.pdf
- Description:
- TRANS PNP 60V 3A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
DXT751-13 from Diodes Incorporated is a low VCE(SAT) PNP bipolar junction transistor in SOT89-3L package, rated for -60 V VCEO, -3 A continuous collector current, and 1 W power dissipation at TA = 25°C; used as medium-power switching or linear amplification device in DC-DC converters, LED drivers, and load switch circuits.
For engineers reviewing the DXT751-13 datasheet, DXT751-13 pinout, DXT751-13 application, or DXT751-13 equivalent, key selection criteria include verified VCE(SAT) ≤ -0.3 V at IC = -3 A / IB = -300 mA, hFE ≥ 40 at IC = -2 A, thermal resistance RθJA = 125 °C/W on FR-4, and RoHS-compliant matte tin plating over copper leadframe.
Technical Context
This PNP transistor employs epitaxial planar die construction for stable gain and low saturation voltage. Its complementary NPN counterpart is DXT651, enabling matched pair design in push-pull or H-bridge configurations.
Rated for operation from -55°C to +150°C, it supports high-reliability industrial switching with pulsed switching times of ton = 45 ns and toff = 200 ns under defined conditions (IC = -500 mA, VCC = -10 V, IB1 = IB2 = -50 mA), and exhibits fT = 100–145 MHz at VCE = -10 V, IC = -50 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -60 V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC (cont) | -3 A - continuous DC collector current capability without derating at TA = 25°C |
| VCE(SAT) | -0.3 V max at IC = -3 A / IB = -300 mA - enables <1.0 W conduction loss in high-current switching |
| hFE | 40 min at IC = -2 A - ensures sufficient base drive margin for saturated switching at high load currents |
| RθJA | 125 °C/W - thermal resistance from junction to ambient on standard FR-4 PCB per AP02001 layout |
| fT | 100 MHz min - usable for audio-frequency amplification and moderate-speed digital switching |
| toff | 200 ns - supports PWM operation up to ~500 kHz with controlled turn-off delay |
Pinout & Package
Package: SOT89-3L - surface-mount plastic case with exposed collector tab for thermal enhancement; UL 94V-0 rated, moisture sensitivity level 1, weight ≈ 0.072 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Main current exit path; connected to higher potential rail in PNP switching applications |
| 2 (Base) | B | Control terminal requiring negative bias relative to emitter to enable conduction |
| 3 (Collector) | C | Main current entry path; electrically tied to exposed metal tab for heatsinking |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(SAT) | ≤ -0.3 V @ IC = -3 A - reduces conduction losses by >40% vs. standard PNP transistors at same current |
| Epitaxial planar die | Stable hFE across temperature and current - enables predictable base drive design in production |
| SOT89-3L thermal performance | Exposed collector tab + RθJA = 125 °C/W - allows 1 W dissipation without external heatsink on standard PCB |
| RoHS & "Green" compliance | Lead-free matte tin plating, halogen-free molding compound - meets IPC-J-STD-020C Level 1 and environmental procurement requirements |
Applications
| DC-DC Converter Switching Stage | LED Constant-Current Driver |
|---|---|
Use Scenario: High-efficiency buck or boost converter output stage operating at 100–500 kHz PWM frequency with 1–3 A load current. IC Role / Device Role / Timing Role: PNP switching transistor controlling current flow into inductive energy storage element; driven by complementary logic-level signal. Use Value: Low VCE(SAT) minimizes I²R losses during on-state, improving efficiency by ≥2% at 2 A load versus standard PNP alternatives. | Use Scenario: Constant-current sink for high-brightness white LEDs in automotive interior lighting or industrial status indicators. IC Role / Device Role / Timing Role: Linear current regulator configured in emitter-follower mode with precision sense resistor feedback. Use Value: Tight hFE distribution (70–300) and low VBE(ON) (-0.8 to -1.0 V) enable accurate current setting with minimal base drive overhead. |
| Industrial Load Switch | Audio Amplifier Output Stage |
Use Scenario: 24 V DC industrial control system driving solenoids, relays, or small motors with on/off control and reverse polarity protection. IC Role / Device Role / Timing Role: Medium-power high-side switch with integrated ESD protection and robust VCEO rating. Use Value: -60 V VCEO provides 150% safety margin against 24 V supply transients; SOT89-3L mounting supports automated reflow assembly. | Use Scenario: Class-A or AB output stage in low-voltage audio preamplifiers or headphone drivers delivering ≤1 W into 8 Ω loads. IC Role / Device Role / Timing Role: Linear amplification device biased in active region with fixed emitter resistor and collector load. Use Value: fT ≥ 100 MHz and low Cobo (30 pF) preserve bandwidth and phase margin up to 20 kHz with minimal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX751 | VCE(SAT) = -0.4 V max @ IC = -3 A; RθJA = 150 °C/W; same SOT89-3L footprint | Higher conduction loss and lower thermal capability limit use in sustained 3 A operation | Select when cost is prioritized over thermal margin and efficiency |
| MJD2955T4G | TO-220 package; VCE(SAT) = -1.2 V @ IC = -4 A; higher power rating but larger footprint | Requires heatsink for >1 W dissipation; incompatible with SMT-only assembly | Select only when board space permits through-hole mounting and >1.5 W dissipation is required |
Compared with ZTX751 and MJD2955T4G, DXT751-13 delivers superior thermal performance in SMT format and lowest VCE(SAT) among SOT89-packaged PNP transistors, making it optimal for space-constrained, high-efficiency medium-power switching where automated assembly is mandatory.
Availability
DXT751-13 is available at Aetrix Electronics and suitable for DC-DC converters, LED drivers, and industrial load switches requiring stable component supply, RoHS compliance, and SMT manufacturability.
Supply support for DXT751-13 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 Malaysia.
The DXT751 belongs to Diodes' low-saturation-voltage bipolar transistor product line, engineered specifically for high-efficiency medium-power switching in automotive, industrial, and consumer power management systems.
FAQ
What is the maximum allowable junction temperature for DXT751-13?
The DXT751-13 has an absolute maximum junction temperature of +150°C, consistent with its specified operating temperature range of -55°C to +150°C. Derating begins above 25°C ambient per Fig. 1, where power dissipation drops linearly to zero at +150°C ambient on FR-4 PCB with recommended pad layout.
Is DXT751-13 pin-compatible with its NPN complement DXT651?
No - DXT751-13 (PNP) and DXT651 (NPN) share identical SOT89-3L packaging and pin numbering (Emitter/Base/Collector), but their terminal polarities are reversed. Direct substitution requires circuit topology revision, not just pin-for-pin replacement.
Does DXT751-13 require external base current limiting in switching applications?
Yes - because it is a bipolar transistor, DXT751-13 requires externally calculated base resistor or current source to deliver sufficient IB (e.g., -300 mA for full saturation at IC = -3 A). The datasheet specifies hFE minimums across current ranges to guide this design.
Can DXT751-13 be used in linear amplifier configurations?
Yes - its specified hFE (70–300), fT (100–145 MHz), and low noise characteristics support Class-A and AB linear amplification. Stable operation requires proper DC biasing, thermal management, and emitter degeneration to avoid thermal runaway at high quiescent currents.
DXT751-13 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):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 500mA, 2V
- Power - Max:
- 1 W
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
DXT751-13 FAQ
1.How can I place an order for DXT751-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DXT751-13 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 DXT751-13 reliable?
The price and inventory of DXT751-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DXT751-13 is usually 5 days.
3.What payment methods are accepted for DXT751-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DXT751-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DXT751-13?
DXT751-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DXT751-13 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 DXT751-13?
For technical support, including DXT751-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DXT751-13 requirements.
6.How does Aetrix verify that DXT751-13 is sourced from the original manufacturer or authorized distributors?
All DXT751-13 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 DXT751-13 meets industry standards.
7.What is the process for return or replacement of DXT751-13?
All DXT751-13 units undergo pre-shipment inspection (PSI). If there is an issue with DXT751-13, 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 DXT751-13 part is unused and in its original packaging.
Return procedure for DXT751-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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