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Nexperia USA Inc. BC846BW/DG/B2,135
- Part No.:
- BC846BW/DG/B2,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC846BW/DG/B2,135.pdf
- Description:
- TRANS NPN 65V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:9,774
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Product details
Overview
BC846BW/DG/B2,135 from Nexperia is a 65 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and linear amplification at IC ≤ 100 mA and VCE ≤ 65 V. It delivers hFE = 200–450 at VCE = 5 V, IC = 2 mA, with VCEsat ≤ 400 mV at IC = 100 mA/IB = 5 mA, and operates across –65 °C to +150 °C ambient.
For engineers reviewing the BC846BW/DG/B2,135 datasheet, BC846BW/DG/B2,135 pinout, BC846BW/DG/B2,135 application, or BC846BW/DG/B2,135 equivalent, this page provides verified pin mapping, gain-bandwidth trade-offs (fT = 100 MHz), thermal resistance (Rth(j-a) = 625 K/W), saturation voltage behavior under pulsed load, and validated alternatives for discrete BJT replacement in space-constrained consumer and industrial PCBs.
Technical Context
This NPN bipolar junction transistor uses epitaxial planar technology with a base-emitter junction designed for stable DC current gain across temperature (hFE variation < ±20% from –55 °C to +150 °C at IC = 2 mA). Its breakdown ratings-VCBO = 80 V, VCEO = 65 V, VEBO = 6 V-define safe operating limits for low-voltage logic-level interfacing and signal buffering.
The device exhibits low parasitic capacitance (Cc = 2–3 pF, Ce = 11 pF) and noise figure NF = 2–10 dB at 1 kHz, supporting audio preamplifier and sensor interface roles. Thermal design is constrained by Rth(j-a) = 625 K/W on FR4 with standard footprint, requiring derating above Tamb = 25 °C per IEC 60134 limiting values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before avalanche; defines upper rail limit in switching circuits. |
| IC | 100 mA continuous - Absolute max DC collector current; usable up to ~80 mA at 25 °C with full derating margin. |
| hFE | 200–450 at VCE = 5 V, IC = 2 mA - High-gain bin enables low-base-drive designs in amplifier stages. |
| VCEsat | ≤400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes conduction loss in digital switch applications. |
| fT | 100 MHz - Transition frequency supports small-signal amplification up to HF band (e.g., IF stages, oscillator buffers). |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance on standard FR4; dictates power dissipation ceiling (~200 mW max at 25 °C). |
| Cc | 2–3 pF - Collector-base capacitance limits high-frequency gain roll-off and affects stability in RF feedback networks. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, 3-terminal leadframe with gull-wing leads; optimized for reflow soldering per IPC-7095.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure hFE-driven operation within safe SOA. |
| 2 | Emitter (E) | Reference terminal for biasing; tied to ground or common emitter node; establishes VBE ≈ 660 mV at IC = 2 mA. |
| 3 | Collector (C) | Output current sink node; connects to load or next stage; must remain ≤65 V below emitter to avoid breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| High-current-gain binning | hFE = 200–450 (BC846BW) enables low-base-drive switching with <5 mA IB for 100 mA IC. |
| Ultra-small SMD package | SOT323 (SC-70) occupies 2.4 mm² PCB area-ideal for wearables, IoT sensors, and dense power management modules. |
| Wide temperature operation | Rated from –65 °C to +150 °C junction temperature; supports automotive under-hood and industrial control environments. |
| Low noise performance | NF = 2–10 dB at 1 kHz allows use in microphone preamps and precision analog front-ends without added op-amp stages. |
| Pulsed current capability | ICM = 200 mA (tp ≤ 1 ms) supports short-duration surge handling in LED flash drivers and relay coil snubbing. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode with base resistor limiting IB to ~0.2 mA. Use Value: VCEsat ≤ 200 mV ensures >3.0 V forward drop across LED at full brightness; hFE ≥ 200 guarantees saturation with minimal GPIO loading. |
Use Scenario: Level-shifting and current boosting between 1.8 V logic and 5 V peripheral enable lines. IC Role / Device Role / Timing Role: Active-low open-collector buffer with pull-up to 5 V rail; switches in <100 ns due to fT = 100 MHz. Use Value: Low Cc (2–3 pF) prevents signal edge degradation; VEBO = 6 V protects against 5 V rail transients during hot-plug events. |
| Audio Pre-amplifier Stage | Temperature Sensor Signal Conditioning |
Use Scenario: Single-transistor common-emitter amplifier for electret microphone output (10 mVpp, 2–20 kHz). IC Role / Device Role / Timing Role: Linear amplifier biased at IC = 1 mA, VCE = 4.5 V; AC-coupled input/output. Use Value: NF = 2 dB minimizes added noise floor; hFE stability over temperature avoids gain drift in battery-powered recorders. |
Use Scenario: Constant-current source for silicon diode-based temperature sensing (e.g., LM35-style analog output). IC Role / Device Role / Timing Role: Current mirror reference leg with matched BC846BW pair; sets 100 µA bias current. Use Value: Tight hFE tolerance (200–450) and low VBE tempco (–2 mV/K) ensure <±0.5 °C error over –40 to +85 °C range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BW,115 | Same SOT323 package; hFE = 200–450 (identical bin), but VCEO = 45 V (vs. 65 V) and Ptot = 250 mW (vs. 200 mW). | Lower breakdown voltage restricts use in 5 V+ supply rails with transient margins; higher Ptot allows slightly higher continuous IC at elevated Tamb. | Select when board-level transients are suppressed and thermal headroom is prioritized over voltage margin. |
| MMBT3904LT1G | SOT23 package (larger than SOT323); hFE = 100–300 (lower max gain); VCEO = 40 V; Rth(j-a) = 405 K/W (better thermal performance). | Larger footprint reduces density; lower hFE demands higher IB; lower VCEO excludes 5 V rail use without clamping. | Choose when thermal management dominates layout constraints and gain requirements are modest (e.g., simple logic inversion). |
Compared with BC846BW/DG/B2,135, BC847BW offers higher power handling but reduced voltage safety margin, while MMBT3904LT1G trades size and gain for superior thermal resistance-making BC846BW optimal for compact, high-gain, 65 V–rated designs where PCB real estate is critical.
Availability
BC846BW/DG/B2,135 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, audio pre-amplifier stages, and temperature sensor signal conditioning requiring stable component supply and consistent hFE binning.
Supply support for BC846BW/DG/B2,135 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 global semiconductor expert focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-grade and industrial-standard components.
The BC846xW series belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-sensitive, space-constrained applications demanding predictable gain, low saturation voltage, and robust thermal performance in consumer and industrial electronics.
FAQ
What is the maximum continuous collector current for BC846BW/DG/B2,135?
The absolute maximum continuous collector current (IC) is 100 mA at Tamb ≤ 25 °C, per IEC 60134 limiting values. Derating is required above 25 °C ambient: at 70 °C, max IC drops to ~60 mA based on Rth(j-a) = 625 K/W and Ptot = 200 mW. Pulse operation supports up to 200 mA for ≤1 ms.
Is BC846BW/DG/B2,135 suitable for automotive applications?
No-BC846BW/DG/B2,135 is not AEC-Q101 qualified and lacks automotive-specific testing or qualification. Nexperia explicitly states non-automotive qualification in its legal disclaimers. For under-hood or safety-critical systems, only AEC-Q101-certified variants (e.g., BC846BWH) should be used.
How does the hFE binning of BC846BW differ from BC846AW and BC846W?
BC846BW has hFE = 200–450 at VCE = 5 V, IC = 2 mA; BC846AW is 110–220; BC846W is 110–450. The BW bin guarantees minimum hFE = 200, enabling reliable low-base-drive operation in amplifiers and saturated switches where gain consistency is critical.
Can BC846BW/DG/B2,135 replace BC546B in existing designs?
Yes-with caveats: both are NPN transistors with similar hFE (BC546B: 200–450), but BC846BW uses SOT323 (smaller) vs. BC546B's TO-92. Layout redesign is required for footprint and thermal path. Electrical specs align closely, but BC846BW's lower Rth(j-a) (625 K/W vs. ~500 K/W for TO-92) demands verification of PCB copper area in high-duty-cycle applications.
BC846BW/DG/B2,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xW
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 65 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC846BW/DG/B2,135 FAQ
1.How can I place an order for BC846BW/DG/B2,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BW/DG/B2,135 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 BC846BW/DG/B2,135 reliable?
The price and inventory of BC846BW/DG/B2,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BW/DG/B2,135 is usually 5 days.
3.What payment methods are accepted for BC846BW/DG/B2,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BW/DG/B2,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BW/DG/B2,135?
BC846BW/DG/B2,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BW/DG/B2,135 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 BC846BW/DG/B2,135?
For technical support, including BC846BW/DG/B2,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BW/DG/B2,135 requirements.
6.How does Aetrix verify that BC846BW/DG/B2,135 is sourced from the original manufacturer or authorized distributors?
All BC846BW/DG/B2,135 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 BC846BW/DG/B2,135 meets industry standards.
7.What is the process for return or replacement of BC846BW/DG/B2,135?
All BC846BW/DG/B2,135 units undergo pre-shipment inspection (PSI). If there is an issue with BC846BW/DG/B2,135, 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 BC846BW/DG/B2,135 part is unused and in its original packaging.
Return procedure for BC846BW/DG/B2,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BW/DG/B2,135 Tags
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MMBT3906LT1G
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MMBT3904-7-F
Diodes Incorporated
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
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