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Diodes Incorporated BCX5410TA
- Part No.:
- BCX5410TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX5410TA.pdf
- Description:
- TRANS NPN 45V 1A SOT-89-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,672
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Product details
Overview
BCX5410TA from Diodes Incorporated is an NPN medium-power bipolar junction transistor in SOT89 package, rated for 45 V VCEO, 1 A continuous collector current, and <500 mV VCE(sat) at 500 mA/50 mA drive-designed for AF driver stages and medium-power switching in industrial control power supplies.
For engineers reviewing the BCX5410TA datasheet, BCX5410TA pinout, BCX5410TA application, or BCX5410TA equivalent, key selection criteria include VCEO margin, thermal resistance (RθJA = 225 °C/W on minimal pad), hFE consistency across 5 mA–500 mA, and SOT89 thermal pad layout compliance.
Technical Context
This transistor uses epitaxial planar die construction for stable gain and low leakage, with a typical fT of 150 MHz enabling audio-frequency amplification and fast-switching duty up to 2% pulse width. Its complementary PNP counterparts are BCX51/52/53 series.
Thermal performance is defined across three mounting conditions: RθJC = 39 °C/W (junction-to-case) and RθJL = 13 °C/W (junction-to-lead), confirming the exposed collector pad serves as primary thermal path-critical for sustained 1 A operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - defines maximum safe DC voltage between collector and emitter under open-base condition. |
| IC (continuous) | 1 A - supports medium-power load switching without forced cooling on standard PCB layouts. |
| VCE(sat) | <500 mV @ IC = 500 mA, IB = 50 mA - minimizes conduction loss in linear and saturated switch modes. |
| hFE | 25–250 - wide DC current gain range ensures reliable drive across base-current-limited and high-gain configurations. |
| fT | 150 MHz - enables stable small-signal amplification up to mid-audio frequencies with predictable phase response. |
| RθJA | 225 °C/W - specifies thermal derating on minimum recommended 1 oz copper pad; requires ≥15 mm × 15 mm copper for full 0.55 W dissipation. |
Pinout & Package
Package: SOT89 - surface-mount plastic package with exposed collector pad for thermal conduction and mechanical anchoring; UL 94V-0 rated, lead-free, halogen-free, and RoHS 3 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current output terminal | Connected to exposed metal tab-must be soldered to ≥15 mm² copper area for thermal management. |
| Emitter (E) | Current return path to ground/reference | Low-impedance connection point; referenced in VCE and VBE measurements. |
| Base (B) | Control input for current amplification | Requires current-limited drive (max IB = 100 mA DC); sensitive to ESD (HBM 4 kV). |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation voltage | VCE(sat) < 500 mV at 500 mA enables <0.25 W conduction loss in switching applications. |
| High breakdown rating | 45 V VCEO provides 20% margin over common 36 V industrial rails and 12 V automotive systems. |
| Robust thermal design | RθJL = 13 °C/W confirms efficient heat transfer from junction to solder joint via collector pad. |
| AEC-Q101 readiness | Manufactured in IATF 16949 certified facilities; PPAP-capable for automotive-grade qualification upon request. |
Applications
| Audio Frequency Driver | Industrial Relay Driver |
|---|---|
|
Use Scenario: Driving 8 Ω speaker loads or transformer-coupled audio outputs in compact embedded audio modules. IC Role / Device Role / Timing Role: NPN switch/amplifier operating in Class AB or saturated mode with fixed bias network. Use Value: Low VCE(sat) reduces distortion and thermal stress during peak current delivery up to 1 A. |
Use Scenario: Controlling 24 VDC industrial relays with coil currents up to 800 mA in PLC I/O modules. IC Role / Device Role / Timing Role: Medium-power interface transistor providing galvanic isolation between microcontroller GPIO and relay coil. Use Value: 45 V VCEO safely clamps inductive kickback; hFE ≥25 ensures single-stage drive from 3.3 V/5 V logic. |
| DC-DC Converter Switch | Linear Regulator Pass Element |
|
Use Scenario: Low-frequency (≤100 kHz) buck converter top switch in non-synchronous 12 V → 5 V conversion for auxiliary rails. IC Role / Device Role / Timing Role: Saturated-mode switching element controlled by PWM signal with RC base network. Use Value: 1 A IC rating supports up to 500 mA output with 2× safety margin; RθJA allows operation without heatsink on 25 mm² copper. |
Use Scenario: Series pass transistor in adjustable linear regulators delivering up to 700 mA at 5 V from 12 V input. IC Role / Device Role / Timing Role: Linear-mode current amplifier regulating output voltage via feedback-controlled base current. Use Value: Stable hFE across 10–500 mA enables precise current mirroring; low VBE(on) improves dropout efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD122G | Higher VCEO (100 V), higher IC (3 A), TO-252 package, RθJA = 65 °C/W | Supports higher-voltage flyback snubbers and motor drivers; requires larger PCB footprint and thermal relief. | Select when >45 V breakdown or >1 A continuous current is required; not drop-in due to package and pinout mismatch. |
| ZTX653 | SOT89 package, VCEO = 60 V, IC = 1 A, VCE(sat) = 400 mV @ 500 mA, hFE = 100–300 | Offers tighter hFE tolerance and lower saturation voltage but lacks AEC-Q101 qualification path. | Prefer for cost-sensitive consumer audio where automotive qualification is unnecessary; verify ESD robustness (HBM 2 kV vs. BCX5410TA's 4 kV). |
Compared with MJD122G and ZTX653, BCX5410TA delivers optimal balance of thermal performance (RθJL = 13 °C/W), automotive-readiness, and SOT89 footprint-making it ideal for space-constrained industrial and automotive-adjacent designs requiring proven reliability at 45 V/1 A.
Availability
BCX5410TA is available at Aetrix Electronics and suitable for industrial relay drivers, audio frequency amplifiers, DC-DC converter switches, and linear regulator pass elements requiring stable component supply and long-term manufacturability.
Supply support for BCX5410TA 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 industrial, automotive, and computing markets.
The BCX54/55/56 series targets medium-power linear and switching applications where thermal efficiency, consistent hFE, and RoHS-compliant packaging are essential-particularly in space-constrained, thermally demanding environments.
FAQ
What is the maximum continuous collector current for BCX5410TA?
The BCX5410TA supports 1 A continuous collector current at TA = +25°C with proper PCB thermal management-specifically a minimum 15 mm × 15 mm 1 oz copper pad. Derating applies above +25°C per the published curve: power dissipation drops linearly to zero at +150°C ambient.
Does BCX5410TA have automotive qualification?
BCX5410TA is manufactured in IATF 16949 certified facilities and supports PPAP documentation; while not pre-qualified to AEC-Q101 out-of-box, Diodes Incorporated offers AEC-Q101 qualification upon customer request with change control and test reporting aligned to automotive requirements.
How should the exposed collector pad of the SOT89 package be handled?
The exposed collector pad must be soldered to a dedicated copper area ≥15 mm² for thermal performance. It is electrically connected to the collector terminal-no isolation or thermal paste is needed. Pad layout must follow Diodes' recommended dimensions (C = 1.5 mm, Y1 = 3.03 mm) to ensure mechanical reliability and solder wetting.
What is the typical transition frequency (fT) and its design implication?
The BCX5410TA has a typical fT of 150 MHz at IC = 50 mA and VCE = 10 V. This enables stable small-signal amplification up to ~10 MHz with usable gain, making it suitable for AF drivers and low-speed switching-but not RF or high-speed digital applications beyond 20 MHz.
BCX5410TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 45 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:
- 150MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
BCX5410TA FAQ
1.How can I place an order for BCX5410TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX5410TA 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 BCX5410TA reliable?
The price and inventory of BCX5410TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX5410TA is usually 5 days.
3.What payment methods are accepted for BCX5410TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX5410TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX5410TA?
BCX5410TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX5410TA 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 BCX5410TA?
For technical support, including BCX5410TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX5410TA requirements.
6.How does Aetrix verify that BCX5410TA is sourced from the original manufacturer or authorized distributors?
All BCX5410TA 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 BCX5410TA meets industry standards.
7.What is the process for return or replacement of BCX5410TA?
All BCX5410TA units undergo pre-shipment inspection (PSI). If there is an issue with BCX5410TA, 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 BCX5410TA part is unused and in its original packaging.
Return procedure for BCX5410TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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