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Nexperia USA Inc. BCV61,235
- Part No.:
- BCV61,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Special Purpose
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
BCV61,235.pdf
- Description:
- TRANS NPN 30V 100MA DUAL SOT143B
- Quantity:
- Payment:
- Shipping:
Inventory:9,980
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Product details
Overview
BCV61,235 from Nexperia is an NPN general-purpose double transistor in SOT143B package, configured as a matched pair of monolithic NPN transistors (TR1 and TR2) for precision current mirroring and temperature-stable biasing. It supports ≤30 V VCEO, ≤100 mA IC, and exhibits 0.7–1.3× current matching (IC1/IE2) at 25 °C, with hFE ranging 110–800 (BCV61 variant). It is used in analog front-ends requiring thermal tracking, such as voltage references and active load circuits.
For engineers reviewing the BCV61,235 datasheet, BCV61,235 pinout, BCV61,235 application, or BCV61,235 equivalent, key selection criteria include matched transistor performance across temperature, low-voltage/low-current operation limits, SOT143B footprint compatibility, and verified current mirror accuracy under VCE = 5 V conditions.
Technical Context
The BCV61,235 integrates two electrically isolated NPN transistors on a single die to ensure tight thermal coupling and parameter matching. Its design enables stable DC current ratio (IC1/IE2) over −55 °C to +150 °C ambient, with <±30% deviation at 150 °C - critical for bias networks where drift must be minimized.
Each transistor operates independently with separate collector, base, and emitter terminals. TR1's base connects internally to TR2's base and TR1's collector (pin 1), enabling direct cascode or current mirror configurations without external wiring. The device lacks integrated emitter resistors, requiring external RE for improved matching linearity per Figure 15.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V max - defines maximum safe collector-emitter voltage swing before breakdown in common-emitter configuration. |
| IC | 100 mA max - sets upper limit for continuous collector current per transistor; suitable for signal-level amplification and switching. |
| hFE (TR1/TR2) | 110–800 at IC = 2 mA - wide DC current gain range allows flexible bias point selection in amplifier or switch designs. |
| IC1/IE2 Matching | 0.7–1.3 at Tamb ≤25 °C - quantifies current ratio tolerance between transistors; enables <±30% error in mirrored current sources. |
| VCEsat | 90–600 mV at IC = 10–100 mA - determines minimum voltage drop in saturated switch mode; impacts power loss in low-voltage logic interfaces. |
| fT | 100 MHz - transition frequency indicates usable bandwidth for small-signal amplification up to ~10 MHz with gain >1. |
| Rth(j-a) | 500 K/W - thermal resistance from junction to ambient on FR4 PCB; implies ~125 °C rise at 250 mW dissipation, limiting high-power use. |
Pinout & Package
SOT143B is a 4-lead surface-mount plastic package measuring 3.0 × 1.4 × 1.1 mm (L × W × H), with gull-wing leads spaced 0.95 mm apart. It supports reflow and wave soldering per Figures 17–18.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Collector of TR2; Base of TR1 and TR2 | Shared base node enables synchronous biasing; TR2 collector provides second output path for cascode or differential pairs. |
| 2 | Collector of TR1 | Primary output terminal for TR1; used as input or output depending on circuit topology (e.g., current mirror input). |
| 3 | Emitter of TR1 | Reference emitter for TR1; connects to ground or bias network; paired with pin 4 for matched current sourcing/sinking. |
| 4 | Emitter of TR2 | Matched emitter for TR2; forms complementary current path with pin 3; essential for bidirectional current mirror operation. |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic matched pair | Two NPN transistors on one die ensure identical thermal coefficients and parameter tracking across temperature. |
| Low-voltage operation | Rated for ≤30 V VCEO and ≤6 V VEBS, supporting rail-to-rail designs in 3.3 V and 5 V systems. |
| High current gain consistency | hFE spread of 110–800 at IC = 2 mA enables predictable DC biasing without trimming. |
| Thermally coupled emitters | Shared substrate minimizes ΔT between TR1 and TR2, reducing drift in current mirrors by up to 5× vs discrete pairs. |
| Small-footprint SMT package | SOT143B occupies <4 mm² PCB area, enabling dense analog integration in space-constrained modules like sensor signal conditioners. |
Applications
| Current Mirror Circuits | Voltage Reference Biasing |
|---|---|
|
Use Scenario: Precision current replication in analog ICs and op-amp bias networks. IC Role / Device Role / Timing Role: Dual-transistor current mirror providing temperature-stable reference current for bandgap circuits. Use Value: Achieves <±5% current mismatch over −40 °C to +85 °C when used with external emitter resistors per Figure 15. |
Use Scenario: Stable bias generation for low-drift voltage references and precision amplifiers. IC Role / Device Role / Timing Role: Matched transistor pair establishing thermally compensated base-emitter voltage gradients. Use Value: Enables <10 ppm/°C reference drift by leveraging matched VBE temperature coefficients (−2 mV/K) across TR1 and TR2. |
| Active Load Stages | Differential Pair Tail Current Sources |
|
Use Scenario: High-impedance active loads in discrete amplifier stages. IC Role / Device Role / Timing Role: TR1 configured as constant-current sink; TR2 provides cascoded control for improved output impedance. Use Value: Delivers >1 MΩ small-signal output resistance at 1 mA bias, increasing amplifier gain by 3–5× vs resistor loads. |
Use Scenario: Symmetric tail current source in discrete instrumentation amplifier inputs. IC Role / Device Role / Timing Role: Dual-emitter configuration supplies matched bias currents to both sides of a differential pair. Use Value: Reduces common-mode error by >15 dB compared to unmatched discrete transistors due to <0.3% hFE mismatch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matched NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCV61A | hFE = 110–220 (narrower range); same pinout and matching specs | Better predictability in low-gain bias networks; reduced gain variation improves repeatability in production | Select when consistent low hFE simplifies bias resistor calculation and reduces calibration effort |
| BCV62 | PNP complement; identical SOT143B package and matching performance | Required for complementary current mirrors or PNP-based reference topologies | Choose for dual-polarity biasing schemes or when interfacing with PNP-input op-amps or regulators |
Compared with BCV61,235, BCV61A offers tighter hFE control for simplified bias design, while BCV62 enables complementary PNP functionality in identical footprint - neither is pin-compatible for direct substitution without circuit topology adjustment.
Availability
BCV61,235 is available at Aetrix Electronics and suitable for current mirror circuits, voltage reference biasing, active load stages, and differential pair tail current sources requiring stable component supply and matched transistor performance.
Supply support for BCV61,235 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 standard products including logic, discretes, MOSFETs, and ESD protection devices.
The BCV61 series belongs to Nexperia's general-purpose bipolar transistor product line, engineered specifically for precision analog functions where thermal tracking and parameter matching outweigh raw speed or power handling.
FAQ
What is the maximum operating temperature for BCV61,235?
The BCV61,235 has a maximum junction temperature (Tj) of 150 °C and an ambient operating range of −65 °C to +150 °C. Thermal resistance Rth(j-a) is 500 K/W on FR4 PCB, so at 250 mW total dissipation, junction temperature rises ~125 °C above ambient - limiting continuous use to ≤25 °C ambient if no heatsinking is applied.
Does BCV61,235 include built-in emitter resistors?
No, BCV61,235 does not integrate emitter resistors. Figure 15 in the datasheet shows optional external emitter resistors (RE) to improve current matching linearity, especially at higher currents. Without them, current matching remains within 0.7–1.3× but degrades slightly under large-signal conditions.
How does BCV61,235 differ from BCV61A/B/C variants?
BCV61,235 corresponds to the base BCV61 grade with hFE 110–800. BCV61A (110–220), BCV61B (200–450), and BCV61C (420–800) are binned versions offering progressively narrower hFE ranges for improved bias predictability - all share identical pinout, matching, and voltage/current ratings.
Can BCV61,235 be used in high-frequency amplifier designs?
With fT = 100 MHz, BCV61,235 supports small-signal amplification up to ~10 MHz with usable gain. It is not optimized for RF or broadband applications; its primary value lies in DC and low-frequency analog functions like biasing and current mirroring where matching and thermal stability dominate over speed.
BCV61,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN (Dual) Current Mirror
- Applications:
- Current Mirror
- Voltage - Rated:
- 30V
- Current Rating (Amps):
- 100mA
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143B
BCV61,235 FAQ
1.How can I place an order for BCV61,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCV61,235 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 BCV61,235 reliable?
The price and inventory of BCV61,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCV61,235 is usually 5 days.
3.What payment methods are accepted for BCV61,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCV61,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCV61,235?
BCV61,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCV61,235 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 BCV61,235?
For technical support, including BCV61,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCV61,235 requirements.
6.How does Aetrix verify that BCV61,235 is sourced from the original manufacturer or authorized distributors?
All BCV61,235 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 BCV61,235 meets industry standards.
7.What is the process for return or replacement of BCV61,235?
All BCV61,235 units undergo pre-shipment inspection (PSI). If there is an issue with BCV61,235, 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 BCV61,235 part is unused and in its original packaging.
Return procedure for BCV61,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCV61,235 Tags
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