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Diodes Incorporated DCX55-13
- Part No.:
- DCX55-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
DCX55-13.pdf
- Description:
- TRANS NPN 60V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,290
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Product details
Overview
DCX55-13 from Diodes Incorporated is an NPN epitaxial planar silicon transistor in SOT89-3L package, rated for 60 V VCEO, 1 A continuous collector current, and 1 W power dissipation at 25°C ambient - designed for medium-power switching and linear amplification in industrial power supplies and motor control stages.
For engineers reviewing the DCX55-13 datasheet, DCX55-13 pinout, DCX55-13 application, or DCX55-13 equivalent, key selection criteria include its 100–250 hFE range at 150 mA, 0.5 V VCE(SAT) at 500 mA/50 mA drive, and thermal resistance of 125 °C/W - critical for thermally constrained PCB layouts and pulse-duty switching designs.
Technical Context
This discrete NPN bipolar junction transistor operates with a maximum collector-base voltage of 60 V and emitter-base voltage of 5 V, supporting stable biasing in common-emitter configurations. Its transition frequency of 200 MHz enables use in low-to-moderate RF amplification and fast-switching applications up to several hundred kHz.
The device features a lead-free, RoHS-compliant matte tin-plated copper leadframe and green molding compound (UL 94V-0), with moisture sensitivity level 1 per J-STD-020C - optimized for reflow soldering in automated SMT lines without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - supports operation in 48 V rail systems with safety margin against transients |
| IC (continuous) | 1 A - suitable for driving small relays, LED arrays, or gate resistors of power MOSFETs |
| PD @ 25°C | 1 W - requires minimal copper area (≥1.3 cm² on FR-4) for full-rated conduction |
| hFE | 100–250 @ IC = 150 mA - ensures reliable saturation with modest base drive in switching circuits |
| VCE(SAT) | ≤0.5 V @ IC = 500 mA, IB = 50 mA - limits conduction loss to ≤250 mW under typical switching conditions |
| RθJA | 125 °C/W - defines thermal derating slope: power must be reduced by 8 mW/°C above 25°C ambient |
Pinout & Package
Package: SOT89-3L - surface-mount plastic case with exposed collector tab for thermal enhancement; dimensions: 4.5 × 2.5 × 1.05 mm (L × W × H); UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Reference node for bias network; connected to ground or low-side return path in switching topologies |
| 2 (Base) | B | Current-controlled input; requires ~50 mA drive for full saturation at 500 mA collector load |
| 3 (Collector) | C | Main power terminal; electrically and thermally tied to exposed metal tab - must be routed to ground plane or heatsink pad |
Key Features
| Feature | Design Value |
|---|---|
| Epitaxial planar die construction | Ensures consistent hFE distribution and low leakage (ICBO ≤ 100 nA) across temperature range |
| Lead-free / RoHS-compliant plating | Matte tin annealed over copper - compatible with Pb-free reflow profiles (peak 260°C) without dewetting |
| Green molding compound | Halogen-free polymer meeting IEC 61249-2-21 - reduces corrosive gas emission during board assembly and field operation |
| Suitable for automated assembly | Standard SOT89-3L footprint and marking (N16) enable high-yield pick-and-place and AOI inspection |
Applications
| Industrial Power Supply Control | DC Motor Driver Stage |
|---|---|
Use Scenario: Switching regulation feedback loop and auxiliary bias winding control in 24–48 V offline SMPS. IC Role / Device Role / Timing Role: Medium-current NPN switch driving optocoupler LED or PWM controller enable pin. Use Value: Low VCE(SAT) minimizes standby power loss; 60 V rating accommodates reflected flyback spikes. | Use Scenario: H-bridge low-side driver for brushed DC motors in HVAC actuators and industrial valves. IC Role / Device Role / Timing Role: Discrete current sink for motor phase control, interfacing with microcontroller GPIO. Use Value: 1 A rating handles 500 mA stall currents; hFE consistency ensures predictable turn-on timing across units. |
| LED Current Regulation | Signal-Level Amplification |
Use Scenario: Constant-current source for high-brightness indicator LEDs in panel meters and PLC I/O modules. IC Role / Device Role / Timing Role: Linear pass element in emitter-follower configuration with precision sense resistor. Use Value: 1 W dissipation supports 100 mA @ 10 V drop; thermal stability maintains current accuracy over -40°C to +85°C. | Use Scenario: Pre-amplifier stage for analog sensor signals (e.g., thermistor, RTD bridge) in data acquisition front-ends. IC Role / Device Role / Timing Role: Low-noise, medium-gain BJT amplifier with DC-coupled input and buffered output. Use Value: 200 MHz fT preserves signal integrity up to 100 kHz; low Cobo (15 pF) avoids high-frequency roll-off in feedback networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX653 | Higher VCEO (100 V), lower hFE (20–150), SOT89-3L package | Better suited for 72 V battery systems; less gain margin for marginal base drive | Select when higher breakdown voltage is required and base drive is robust |
| MJD112 | TO-252 package, 80 V VCEO, 2 A IC, higher RθJA (62.5 °C/W) | Larger footprint but superior thermal performance; not SMT-compatible with same land pattern | Choose for higher current or improved thermal management where board space allows |
Compared with ZTX653 and MJD112, DCX55-13 offers optimal balance of gain, saturation voltage, and thermal resistance in the compact SOT89-3L form factor - ideal for space-constrained, 1 A-class switching where precise base drive control is available.
Availability
DCX55-13 is available at Aetrix Electronics and suitable for industrial power supplies, motor control modules, LED driver circuits, and analog signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for DCX55-13 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, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.
The DCX55 series belongs to Diodes' general-purpose bipolar transistor product line, engineered for robust performance in medium-power switching and amplification roles across automotive-qualified and industrial-grade applications.
FAQ
What is the maximum safe operating temperature for DCX55-13?
The DCX55-13 has an operating junction temperature range of –55°C to +150°C. With RθJA = 125 °C/W and PD = 1 W at 25°C, junction temperature rises 125°C per watt - so at full 1 W dissipation and 25°C ambient, TJ reaches 150°C. Derating is mandatory above 25°C ambient per Fig. 1 in DS31154.
Can DCX55-13 replace DCX55-16 in a design?
Yes - DCX55-13 and DCX55-16 share identical electrical specifications and SOT89-3L packaging. The suffix "-13" denotes tape-and-reel packaging (2500 pcs), while "-16" indicates a different date-code or internal revision; both meet the same DCX55-16 specification per DS31154 Rev. 3.
Is DCX55-13 suitable for linear amplification?
Yes - its fT = 200 MHz, low Cobo = 15 pF, and hFE stability across IC make it appropriate for low-distortion audio preamplifiers and sensor signal conditioning up to ~100 kHz, provided thermal design accommodates dissipation at bias points near 1 W.
Does DCX55-13 require a heatsink in standard PCB mounting?
No external heatsink is required for ≤0.5 W continuous dissipation on a standard FR-4 PCB with Diodes' recommended pad layout (AP02001). At full 1 W, the exposed collector tab must be connected to ≥1.3 cm² of internal or external copper pour to maintain TJ ≤ 150°C at 25°C ambient.
DCX55-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 63 @ 150mA, 2V
- Power - Max:
- 1 W
- Frequency - Transition:
- 200MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
DCX55-13 FAQ
1.How can I place an order for DCX55-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DCX55-13 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 DCX55-13 reliable?
The price and inventory of DCX55-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DCX55-13 is usually 5 days.
3.What payment methods are accepted for DCX55-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DCX55-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DCX55-13?
DCX55-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DCX55-13 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 DCX55-13?
For technical support, including DCX55-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DCX55-13 requirements.
6.How does Aetrix verify that DCX55-13 is sourced from the original manufacturer or authorized distributors?
All DCX55-13 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 DCX55-13 meets industry standards.
7.What is the process for return or replacement of DCX55-13?
All DCX55-13 units undergo pre-shipment inspection (PSI). If there is an issue with DCX55-13, 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 DCX55-13 part is unused and in its original packaging.
Return procedure for DCX55-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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