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Nexperia USA Inc. BCV49,115
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- Part No.:
- BCV49,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCV49,115.pdf
- Description:
- TRANS NPN DARL 60V 0.5A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:859
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Product details
Overview
BCV49 from Nexperia is an NPN small-signal Darlington transistor in SOT89 (SC-62) surface-mount package, designed for high-gain preamplifier input stages. It delivers DC current gain ≥10000 at IC = 100 mA, supports 500 mA continuous collector current, withstands 60 V VCE, and operates up to 150 °C junction temperature - enabling low-noise signal amplification in space-constrained analog front-ends.
For engineers reviewing the BCV49 datasheet, BCV49 pinout, BCV49 application, or BCV49 equivalent, this page provides verified electrical parameters, thermal resistance values (Rth(j-a) = 96 K/W), saturation voltage limits (VCEsat ≤ 1 V), and confirmed SOT89 mechanical dimensions - all critical for bias stability, thermal layout, and PCB footprint validation in discrete amplifier designs.
Technical Context
The BCV49 integrates two cascaded NPN transistors in a monolithic Darlington configuration, achieving ultra-high hFE (min. 10000 at IC = 100 mA) while maintaining low VBEsat (≤1.5 V) and usable fT (220 MHz typical). Its internal structure enables single-stage current amplification without external feedback networks.
It operates within IEC 60134 absolute maximum ratings: VCBO = 80 V, VCEO = 60 V, and Ptot = 1.3 W on FR4 PCB with 1 cm² collector pad. Thermal resistance Rth(j-sp) = 16 K/W confirms efficient heat transfer to solder point under reflow conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage before breakdown; sets upper rail limit for preamp stage supply. |
| hFE | ≥10000 at IC = 100 mA - Enables microampere-level base drive for 100 mA output; reduces upstream driver loading. |
| VCEsat | ≤1 V at IC = 100 mA - Minimizes voltage drop and power loss in saturated switching or linear gain applications. |
| fT | 220 MHz typical - Supports audio and low-MHz signal amplification with stable gain margin. |
| Rth(j-a) | 96 K/W - Defines thermal derating slope: ~13 mW/°C ambient rise above 25 °C on standard FR4 board. |
| Ptot | 1.3 W at Tamb ≤ 25 °C - Sets maximum dissipation before thermal shutdown; requires thermal pad design for >500 mW operation. |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, single-sided copper FR4 mounting pad (1 cm²) required for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Low-impedance output node; internally connected to emitter of second transistor; must be tied to lowest potential in Darlington stage. |
| 2 | Collector | Main current output terminal; electrically connected to collector of both transistors; requires thermal pad for power handling. |
| 3 | Base | High-impedance control input; drives base of first transistor; sensitive to ESD and leakage due to cascaded gain. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high DC current gain | hFE ≥10000 at IC = 100 mA - Reduces base drive requirements by 2–3 orders vs. single transistor, simplifying bias network design. |
| Low saturation voltage | VCEsat ≤1 V - Limits conduction loss in linear amplifier or switch-mode pre-driver applications. |
| Thermally optimized SOT89 | Rth(j-sp) = 16 K/W - Enables direct thermal coupling to PCB copper, supporting sustained 500 mA operation with proper layout. |
| Robust voltage rating | VCBO = 80 V - Provides 20 V headroom above 60 V VCEO, improving surge tolerance in industrial sensor interfaces. |
Applications
| Audio Preamplifier Input Stage | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Low-level microphone or piezoelectric sensor signal amplification prior to ADC sampling. IC Role / Device Role / Timing Role: High-impedance, high-gain current buffer providing >60 dB voltage gain with minimal noise contribution. Use Value: Enables direct interface to µA-level sensor outputs without op-amp buffering, reducing component count and board area. |
Use Scenario: Amplifying millivolt-level thermocouple or strain gauge bridge outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Discrete transconductance stage converting weak differential signals into robust single-ended currents for filtering and digitization. Use Value: Delivers stable hFE across -40 °C to +125 °C ambient, ensuring consistent gain calibration over industrial temperature range. |
| LED Driver Pre-Bias Circuit | Relay/SSR Control Interface |
Use Scenario: Providing base current to a power BJT driving high-brightness LED strings in constant-current lighting systems. IC Role / Device Role / Timing Role: Current-multiplying pre-driver that isolates MCU GPIO from high-current switching transients. Use Value: Allows 3.3 V GPIO to safely switch 500 mA loads with <10 µA base current, eliminating need for level-shifting or dedicated driver ICs. |
Use Scenario: Driving electromagnetic relay coils or opto-triac inputs in industrial control I/O cards. IC Role / Device Role / Timing Role: High-gain switch delivering fast turn-on/turn-off with minimal hold current to reduce coil heating. Use Value: Achieves full relay actuation with <50 µA MCU output current, extending microcontroller lifetime and reducing power supply load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN Darlington transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCV47 | Lower hFE (min. 2000), same SOT89 package, VCEO = 45 V | Not suitable for 60 V rail systems or high-precision low-input-current amplifiers | Select when cost sensitivity outweighs gain requirement and supply voltage ≤45 V. |
| MMDT3904 | Dual NPN, lower hFE (min. 100), SOT363 package, VCEO = 40 V | Limited to low-voltage, low-power dual-channel preamp roles; no thermal pad support | Choose only for space-constrained dual-gain paths where Darlington-level gain is unnecessary. |
Compared with BCV47 and MMDT3904, the BCV49 uniquely combines 60 V rating, 10000 hFE, and SOT89 thermal performance - making it the only option among the three capable of reliable 500 mA amplification at elevated ambient temperatures without active cooling.
Availability
BCV49 is available at Aetrix Electronics and suitable for audio preamplifier input stages, industrial sensor signal conditioning, and relay/SSR control interfaces requiring stable component supply, long-term manufacturability, and traceable sourcing.
Supply support for BCV49 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The BCV49 belongs to Nexperia's small-signal transistor portfolio, engineered specifically for high-gain, low-noise analog amplification in space- and power-constrained industrial and consumer equipment.
FAQ
What is the maximum continuous collector current for BCV49?
The BCV49 supports 500 mA continuous collector current (IC) at Tamb ≤ 25 °C with proper PCB thermal design - specifically a 1 cm² tin-plated copper pad on FR4. At higher ambient temperatures, derating applies per its 96 K/W junction-to-ambient thermal resistance.
Is BCV49 suitable for automotive applications?
No. The BCV49 is explicitly marked as non-automotive qualified in its revision history (v.4, October 2024). It lacks AEC-Q101 qualification, automotive-grade testing, and guaranteed operation over -40 °C to +125 °C with extended reliability screening.
How does BCV49 differ from its PNP complement BCV48?
The BCV48 is a PNP Darlington with identical SOT89 package, 500 mA IC, and 60 V VCEO, but inverted polarity: pin 1 is collector, pin 2 is emitter, and pin 3 is base. Its hFE is also ≥10000, enabling complementary push-pull or differential pair configurations.
Can BCV49 replace a standard NPN transistor like BC847 in a circuit?
Only with circuit redesign. BCV49's Darlington structure introduces ~1.4 V VBEon and higher capacitance, requiring adjusted bias resistors and reduced bandwidth expectations. Direct substitution will cause incorrect biasing, thermal runaway risk, or oscillation due to gain-phase shift.
BCV49,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - Darlington
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 100µA, 100mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 10000 @ 100mA, 5V
- Power - Max:
- 1.3 W
- Frequency - Transition:
- 220MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCV49,115 FAQ
1.How can I place an order for BCV49,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCV49,115 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 BCV49,115 reliable?
The price and inventory of BCV49,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCV49,115 is usually 5 days.
3.What payment methods are accepted for BCV49,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCV49,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCV49,115?
BCV49,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCV49,115 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 BCV49,115?
For technical support, including BCV49,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCV49,115 requirements.
6.How does Aetrix verify that BCV49,115 is sourced from the original manufacturer or authorized distributors?
All BCV49,115 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 BCV49,115 meets industry standards.
7.What is the process for return or replacement of BCV49,115?
All BCV49,115 units undergo pre-shipment inspection (PSI). If there is an issue with BCV49,115, 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 BCV49,115 part is unused and in its original packaging.
Return procedure for BCV49,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCV49,115 Tags
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