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Nexperia USA Inc. BCX56-16,135
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- Part No.:
- BCX56-16,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX56-16,135.pdf
- Description:
- TRANS NPN 80V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:15,138
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Product details
Overview
BCX56-16,135 from Nexperia is an NPN medium power transistor in SOT89 (SC-62) package, rated for 80 V VCEO, 1 A continuous collector current, and 250 hFE at IC = 150 mA / VCE = 2 V. It serves as a low-side switch or MOSFET driver in battery-powered power management circuits where thermal performance on FR4 PCBs with 6 cm² collector pad supports up to 1.35 W dissipation.
For engineers reviewing the BCX56-16,135 datasheet, BCX56-16,135 pinout, BCX56-16,135 application, or BCX56-16,135 equivalent, this device is selected for linear voltage regulators, amplifier stages, and load-switching roles requiring stable DC current gain across −55 °C to 150 °C junction temperature and validated transient thermal impedance down to 93 K/W.
Technical Context
This transistor operates in active and saturation regions with VBE ≤ 1 V at IC = 500 mA and VCE(sat) ≤ 0.5 V under IC/IB = 10 drive. Its fT of 100–180 MHz enables use in high-speed switching up to ~100 kHz with minimal storage time delay.
Thermal design relies on three mounting configurations: standard footprint (250 K/W Rth(j-a)), 1 cm² collector pad (132 K/W), or 6 cm² pad (93 K/W). Junction-to-solder-point resistance is fixed at 16 K/W, supporting precise thermal modeling in compact SMT layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage with base open; defines breakdown margin in low-side switch applications. |
| IC | 1 A - Continuous DC collector current rating; sets maximum steady-state load drive capability. |
| hFE | 100–250 - DC current gain at VCE = 2 V, IC = 150 mA; ensures predictable base drive sizing for saturation. |
| Ptot | 1.35 W - Max power dissipation with 6 cm² copper pad; enables higher current operation without forced cooling. |
| fT | 100–180 MHz - Transition frequency at VCE = 5 V, IC = 50 mA; supports fast switching in PWM-driven loads. |
| Rth(j-a) | 93 K/W - Thermal resistance with optimized 6 cm² collector pad; critical for ambient temperature derating above 25 °C. |
Pinout & Package
SOT89 (SC-62) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, with exposed collector tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Reference node for current return path; connected to ground or low-side reference in switch configurations. |
| 2 | Collector | Main power output terminal; soldered to large copper area for heat extraction and current routing. |
| 3 | Base | Control input; requires current-limited drive (≤ 0.3 A peak) to ensure reliable turn-on/turn-off without overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE bins | BCX56-16 offers 100–250 hFE, enabling precise base resistor selection for consistent saturation across production lots. |
| High VCEO rating | 80 V withstand supports 24 V and 48 V industrial bus systems with ≥2× safety margin against transients. |
| Peak IC capability | 2 A single-pulse rating allows short-duration surge handling (tp ≤ 1 ms) in motor or solenoid drive. |
| Low VCE(sat) | ≤0.5 V at IC = 500 mA / IB = 50 mA minimizes conduction loss in battery-operated load switches. |
| Thermal optimization | 93 K/W Rth(j-a) with 6 cm² pad enables >1 W operation without heatsink in space-constrained designs. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs delivering up to 1 A at 5–12 V output. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base bias network. Use Value: Stable hFE binning ensures predictable dropout voltage and thermal foldback behavior across temperature. |
Use Scenario: Gate driver stage for N-channel power MOSFETs in DC-DC converters. IC Role / Device Role / Timing Role: Medium-current buffer amplifying microcontroller GPIO to deliver ≥50 mA gate charge. Use Value: 180 MHz fT and low VCE(sat) reduce switching transition time and gate drive losses. |
| Low-Side Switches | Battery-Driven Devices |
|
Use Scenario: Load switch for 12 V automotive accessories or industrial sensors. IC Role / Device Role / Timing Role: Ground-referenced current sink switching resistive or inductive loads. Use Value: 80 V VCEO accommodates load dump transients; 2 A ICM handles inrush currents. |
Use Scenario: Power path control in portable medical monitors or handheld test equipment. IC Role / Device Role / Timing Role: Enable/disable rail to subsystems during sleep/wake cycles. Use Value: Low standby current (ICBO ≤ 100 nA) preserves battery life; SOT89 footprint saves board space. |
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 |
|---|---|---|---|
| BCX56-10,135 | hFE = 63–160 at IC = 150 mA; lower gain spread than BCX56-16. | Suitable where tighter hFE tolerance reduces base resistor variation in high-volume consumer products. | Select when gain consistency matters more than maximum drive strength. |
| BCP56-16,115 | Same hFE range but in SOT223 package; Rth(j-a) = 70 K/W with 6 cm² pad; larger footprint. | Better thermal performance for >1.5 W continuous dissipation; requires more PCB area. | Choose when thermal headroom is critical and board space permits larger package. |
Compared with BCX56-16,135, BCX56-10,135 trades gain headroom for tighter hFE distribution, while BCP56-16,115 improves thermal resistance by 23 K/W at the cost of footprint size-making BCX56-16 optimal for space-constrained 1 W-class switching.
Availability
BCX56-16,135 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in industrial control, battery management, and embedded power systems.
Supply support for BCX56-16,135 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 leading semiconductor manufacturer specializing in high-performance analog, logic, and discrete components, with global manufacturing and R&D centers focused on reliability and efficiency.
The BCX56 series belongs to Nexperia's medium-power bipolar transistor product line, engineered for robust switching and amplification in industrial, consumer, and automotive-qualified (selected variants) power management applications.
FAQ
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 0.3 A, but for reliable long-term operation, Nexperia recommends limiting continuous IB to ≤50 mA when driving IC = 500 mA. This ensures VCE(sat) remains ≤0.5 V and avoids thermal runaway due to localized heating at the base-emitter junction.
Can BCX56-16,135 be used in avalanche mode?
No-BCX56-16,135 is not rated or characterized for controlled avalanche operation. Its VCEO = 80 V is a DC breakdown limit under open-base conditions; operation beyond this risks irreversible junction damage. Transient overvoltage protection must be implemented externally.
How does thermal performance change with different PCB copper areas?
Rth(j-a) degrades from 93 K/W (6 cm² collector pad) to 132 K/W (1 cm²) and 250 K/W (standard footprint). At 25 °C ambient, this reduces usable continuous power from 1.35 W to 0.95 W and 0.50 W respectively-requiring explicit derating per Figure 1 in the datasheet.
Is the SOT89 package lead-free and RoHS-compliant?
Yes-BCX56-16,135 is manufactured in a lead-free, RoHS-compliant SOT89 package per Nexperia's standard qualification. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) and supports standard reflow profiles including peak temperatures up to 260 °C.
BCX56-16,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 150mA, 2V
- Power - Max:
- 1.25 W
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX56-16,135 FAQ
1.How can I place an order for BCX56-16,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX56-16,135 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 BCX56-16,135 reliable?
The price and inventory of BCX56-16,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX56-16,135 is usually 5 days.
3.What payment methods are accepted for BCX56-16,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX56-16,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX56-16,135?
BCX56-16,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX56-16,135 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 BCX56-16,135?
For technical support, including BCX56-16,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX56-16,135 requirements.
6.How does Aetrix verify that BCX56-16,135 is sourced from the original manufacturer or authorized distributors?
All BCX56-16,135 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 BCX56-16,135 meets industry standards.
7.What is the process for return or replacement of BCX56-16,135?
All BCX56-16,135 units undergo pre-shipment inspection (PSI). If there is an issue with BCX56-16,135, 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 BCX56-16,135 part is unused and in its original packaging.
Return procedure for BCX56-16,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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