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Nexperia USA Inc. BC847,235
- Part No.:
- BC847,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC847,235.pdf
- Description:
- TRANS NPN 45V 0.1A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,364
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Product details
Overview
BC847,235 from Nexperia is an NPN general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) spanning 110–800 depending on selection group. It serves as a discrete switching or linear amplification element in low-power analog and digital interface circuits, including level translation, LED drive, and signal buffering in consumer and industrial PCBs.
For engineers reviewing the BC847,235 datasheet, BC847,235 pinout, BC847,235 application, or BC847,235 equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, real-world use cases, and cross-reference alternatives with documented gain and saturation voltage differences - all aligned to Nexperia's Rev. 13 product data sheet.
Technical Context
The BC847,235 operates as a silicon planar epitaxial NPN transistor with open-base collector-emitter breakdown of 45 V and emitter-base breakdown of 6 V. Its hFE range (110–800 at VCE = 5 V, IC = 2 mA) enables precise biasing across multiple gain grades (A/B/C), while VCE(sat) ≤ 400 mV at IC = 100 mA / IB = 5 mA supports efficient low-voltage switching.
Thermal resistance Rth(j-a) is 500 K/W on FR4 PCB with single-sided copper, and absolute maximum junction temperature is 150 °C. It exhibits fT ≥ 100 MHz at VCE = 5 V / IC = 10 mA, confirming suitability for audio-frequency amplification and moderate-speed digital switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in switch designs. |
| IC | 100 mA continuous - Sustained collector current capability; sets load-driving capacity for LEDs, relays, and small solenoids. |
| hFE | 110–800 - Gain spread across BC847x variants; determines base drive requirements and amplifier stability margins. |
| VCE(sat) | ≤ 400 mV at IC = 100 mA / IB = 5 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| fT | ≥ 100 MHz - Transition frequency confirms usable bandwidth up to mid-audio range; supports fast edge response in logic interfaces. |
| Ptot | 250 mW at Tamb ≤ 25 °C - Total power dissipation limit on standard FR4 PCB; constrains thermal design in compact layouts. |
Pinout & Package
SOT23 (TO-236AB) surface-mount plastic package: 3-terminal, 1.3 mm × 2.9 mm footprint, 0.95 mm height, gull-wing leads, JEDEC-compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure stable hFE-based operation. |
| 2 | Emitter (E) | Reference terminal for bias network; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current sink node; ties to load (e.g., LED anode or relay coil) in low-side switch topology. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE grades (A/B/C) | Enables precise gain matching: BC847A (110–220), BC847B (200–450), BC847C (420–800) - reduces base resistor tolerance sensitivity. |
| SOT23 package compatibility | Standardized footprint aligns with IPC-7351B; supports automated placement and reflow soldering without lead modification. |
| VBE(sat) ≤ 900 mV | Ensures predictable turn-on threshold across temperature; simplifies TTL/CMOS-level interfacing without level-shifting circuitry. |
| Low Cc (1.5 pF) | Minimizes Miller effect in high-frequency amplifiers; preserves bandwidth in active filters and RF detector stages. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs. IC Role / Device Role / Timing Role: Low-side current switch controlled by microcontroller GPIO pin. Use Value: VCE(sat) ≤ 200 mV at IC = 10 mA / IB = 0.5 mA ensures >95% efficiency and minimal self-heating on dense PCBs. |
Use Scenario: Adding discrete logic-level output pins to resource-constrained MCUs. IC Role / Device Role / Timing Role: Digital buffer stage translating weak GPIO signals to robust 100 mA sink capability. Use Value: hFE ≥ 290 (BC847B) guarantees full saturation with ≤ 35 µA base drive, compatible with ultra-low-power sleep modes. |
| Audio Signal Amplifier | Power Supply Enable Switch |
|
Use Scenario: Single-stage preamplifier for electret microphone output (10–20 mV AC). IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration. Use Value: fT ≥ 100 MHz and NF ≤ 10 dB at 1 kHz support clean 20 Hz–20 kHz audio band amplification with low distortion. |
Use Scenario: Enabling/disabling 5 V auxiliary rails in multi-rail embedded systems. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS pass FET gate. Use Value: VCEO = 45 V and IC = 100 mA allow direct control of 12 V/24 V enable lines without external level shifters. |
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 |
|---|---|---|---|
| BC846,215 | VCEO = 65 V, hFE = 110–800, same SOT23 package | Higher voltage rating suits 48 V telecom interfaces; identical pinout and gain grading. | Select when system rail exceeds 45 V but gain and footprint compatibility are required. |
| MMBT3904LT1G | VCEO = 40 V, hFE = 100–300, slightly higher VCE(sat) (300 mV typical) | Lower max voltage and narrower gain range; widely available but less flexible for precision biasing. | Choose for cost-sensitive volume production where 40 V margin suffices and tighter gain control isn't critical. |
Compared with BC847,235, BC846,215 offers +20 V headroom for higher-voltage rails without changing layout, while MMBT3904LT1G trades voltage margin and gain flexibility for broader distributor stock - making BC847,235 optimal for designs needing balanced performance, gain selection, and 45 V compliance.
Availability
BC847,235 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, audio signal amplification, and power supply enable switching requiring stable component supply across industrial, consumer, and automotive-adjacent designs.
Supply support for BC847,235 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 essential semiconductors, delivering high-performance, reliable components for automotive, industrial, mobile, and computing applications.
The BC847x series belongs to Nexperia's general-purpose transistor portfolio, designed specifically for cost-effective, space-constrained switching and amplification tasks in high-volume SMT manufacturing environments.
FAQ
What is the marking code for BC847,235?
The BC847,235 uses the marking code "1H%", where "%" is a placeholder for the manufacturing site identifier. This matches Nexperia's official marking table for the BC847 variant and is laser-etched on the top surface of the SOT23 package body.
Is BC847,235 automotive qualified?
No. Per Nexperia's Rev. 13 datasheet revision history, the BC847x series was explicitly changed to non-automotive qualification in July 2022. For automotive applications, Nexperia recommends its -Q qualified equivalents such as BC847B-Q.
What is the thermal resistance of BC847,235 on a standard PCB?
Rth(j-a) is 500 K/W when mounted on an FR4 PCB with single-sided copper, tin-plated finish, and standard SOT23 footprint - measured in free air per IEC 60134 guidelines and confirmed in Table 7 of the datasheet.
How does BC847,235 differ from BC847B?
BC847,235 is the Nexperia orderable part number for the BC847B variant - confirmed by ordering information Table 4 and marking code "1F%". It specifies hFE = 200–450 at VCE = 5 V / IC = 2 mA and shares identical package, pinout, and limiting values with other BC847x members.
BC847,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 110 @ 2mA, 5V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC847,235 FAQ
1.How can I place an order for BC847,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847,235 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 BC847,235 reliable?
The price and inventory of BC847,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847,235 is usually 5 days.
3.What payment methods are accepted for BC847,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847,235?
BC847,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847,235 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 BC847,235?
For technical support, including BC847,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847,235 requirements.
6.How does Aetrix verify that BC847,235 is sourced from the original manufacturer or authorized distributors?
All BC847,235 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 BC847,235 meets industry standards.
7.What is the process for return or replacement of BC847,235?
All BC847,235 units undergo pre-shipment inspection (PSI). If there is an issue with BC847,235, 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 BC847,235 part is unused and in its original packaging.
Return procedure for BC847,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847,235 Tags
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MMBT3904-7-F
Diodes Incorporated
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Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC847B,215
Nexperia USA Inc.
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MMBT2222A-TP
Micro Commercial Co
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