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Infineon Technologies BCX70JE6433HTMA1
- Part No.:
- BCX70JE6433HTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCX70JE6433HTMA1.pdf
- Description:
- TRANS NPN 45V 0.1A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,552
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Product details
Overview
BCX70JE6433HTMA1 from Nexperia is an NPN silicon small-signal transistor in SOT23 package, designed for audio-frequency input stages and driver circuits. It delivers hFE = 250–500 (at IC = 10 µA, VCE = 5 V), VCEO = 45 V, VCE(sat) ≤ 0.25 V (IC = 50 mA, IB = 1.25 mA), and low noise of F = 2 dB (IC = 200 µA, f = 1 kHz, ∆f = 200 Hz, RS = 2 kΩ). It is RoHS-compliant and AEC-Q101 qualified for automotive signal conditioning.
For engineers reviewing the BCX70JE6433HTMA1 datasheet, BCX70JE6433HTMA1 pinout, BCX70JE6433HTMA1 application, or BCX70JE6433HTMA1 equivalent, key selection criteria include DC current gain group J, low VCE(sat) at medium drive current, thermal resistance RthJS ≤ 240 K/W, and noise performance below 15 kHz - critical for analog front-end design in automotive sensors and portable audio.
Technical Context
This transistor operates as a linear amplifying device with fixed-emitter biasing topology, supporting Class-A or Class-AB configurations in low-power AF stages. Its hFE group J ensures predictable gain stability across IC = 10 µA to 50 mA, while fT = 250 MHz enables stable operation up to mid-VHF without parasitic oscillation.
The device uses epitaxial planar technology with optimized base doping to achieve low VBE(sat) (≤ 0.85 V) and low Ccb = 0.95 pF at VCB = 10 V, minimizing Miller effect in high-gain amplifier designs. Junction temperature rating of 150 °C supports operation in thermally constrained automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Supports rail voltages up to ±22.5 V in split-supply audio preamps without breakdown. |
| hFE (IC = 10 µA) | 250–500 - Enables high-input-impedance voltage amplification with minimal base current loading. |
| VCE(sat) | ≤ 0.25 V @ IC = 50 mA - Reduces power loss and self-heating in driver-stage switching applications. |
| fT | 250 MHz - Ensures stable small-signal gain above audio band, suitable for RF bias networks and IF coupling. |
| F (noise figure) | 2 dB @ 1 kHz - Meets SNR requirements for microphone preamplifiers and sensor signal chains. |
| RthJS | ≤ 240 K/W - Allows direct PCB copper pour mounting without heatsink for <330 mW continuous dissipation. |
| Ccb | 0.95 pF @ VCB = 10 V - Limits feedback capacitance in common-emitter gain stages to prevent instability. |
Pinout & Package
BCX70JE6433HTMA1 is housed in a standard SOT23 plastic surface-mount package with gull-wing leads, rated for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; defines reference for VBE and sets emitter degeneration resistor placement. |
| 2 (Base) | Control input | Receives bias current to modulate collector current; requires series resistor to limit IB and suppress noise coupling. |
| 3 (Collector) | Current source output | Drives load or next stage; layout must minimize trace inductance to preserve fT and reduce VCE ringing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive ambient temperatures (−40 °C to +125 °C) and mechanical shock/vibration profiles. |
| Low-noise operation | F = 2 dB at 1 kHz enables use in battery-powered microphone preamps without external noise filtering. |
| High hFE group J | Guaranteed hFE ≥ 250 at IC = 10 µA ensures consistent bias point across production lots. |
| RoHS-compliant Pb-free package | SOT23 meets EU Directive 2011/65/EU and IPC-J-STD-609A Class 1 moisture sensitivity level. |
Applications
| Automotive Door Module Sensor Interface | Portable Audio Input Stage |
|---|---|
Use Scenario: Amplifying analog signals from capacitive touch or Hall-effect position sensors in door control units. IC Role / Device Role / Timing Role: Small-signal NPN amplifier configured in common-emitter topology with emitter degeneration. Use Value: Low VCE(sat) and 2 dB noise figure preserve dynamic range and resolution of sub-10 mV sensor outputs. | Use Scenario: First-stage gain block in mono headset amplifier ICs for smartphones and wearables. IC Role / Device Role / Timing Role: Voltage amplifier with fixed bias network, driving 10 kΩ input impedance of downstream op-amp. Use Value: hFE ≥ 250 ensures stable 20 dB gain with <1% variation across temperature and supply voltage. |
| Industrial Temperature Transmitter Front-End | Smart Home Motion Detector Signal Conditioning |
Use Scenario: Linear amplification of RTD or thermistor bridge outputs in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: DC-coupled differential pair input stage with matched hFE group J devices. Use Value: Tight hFE spread (250–500) minimizes offset drift and improves 0.1% accuracy over −25 °C to +70 °C. | Use Scenario: Amplifying weak PIR sensor outputs before window comparator detection in occupancy sensors. IC Role / Device Role / Timing Role: High-input-impedance common-collector buffer feeding active RC filter. Use Value: Ccb = 0.95 pF prevents phase shift in 0.3–10 Hz bandpass filter, maintaining detection reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BJ,115 | hFE = 200–450 (group B), VCEO = 45 V, same SOT23 package | Lower gain consistency at IC < 1 mA; higher VCE(sat) (0.3 V typical) | Select when cost sensitivity outweighs need for ultra-low noise or tight hFE matching. |
| MMBT3904LT1G | hFE = 100–300 (standard grade), VCEO = 40 V, same footprint | Not AEC-Q101 qualified; higher noise (5 dB) and lower fT (300 MHz min) | Acceptable for consumer-grade audio where automotive qualification is not required. |
Compared with BC847BJ and MMBT3904LT1G, BCX70JE6433HTMA1 offers superior noise performance and guaranteed high hFE at microamp bias currents - making it preferred for precision analog front-ends where signal integrity and thermal stability are critical.
Availability
BCX70JE6433HTMA1 is available at Aetrix Electronics and suitable for automotive door modules, portable audio input stages, industrial temperature transmitters, and smart home motion detectors requiring stable component supply and long-term lifecycle support.
Supply support for BCX70JE6433HTMA1 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 manufacturing rooted in Philips' legacy and ISO/TS 16949-certified operations.
BCX70JE6433HTMA1 belongs to Nexperia's BCX70 family of AEC-Q101-qualified NPN transistors, engineered specifically for automotive signal conditioning and low-noise analog amplification in space-constrained environments.
FAQ
What is the maximum operating junction temperature for BCX70JE6433HTMA1?
The absolute maximum junction temperature is 150 °C, verified per JEDEC JESD22-A104. Operation at this limit requires thermal derating of Ptot to ≤ 180 mW at TS = 71 °C, and full derating to zero at TS ≥ 125 °C per the Ptot vs. TS curve in Figure 7 of the datasheet.
Is BCX70JE6433HTMA1 pin-compatible with BC847 series transistors?
Yes - both use identical SOT23 pinout (E-B-C), enabling drop-in replacement in most PCB layouts. However, BCX70J has higher hFE and lower noise than BC847B/C, so gain and SNR may increase without circuit modification.
Does BCX70JE6433HTMA1 support pulsed operation beyond its DC ratings?
Yes - peak collector current ICM = 200 mA and permissible pulse load ratio Ptot(max)/Ptot(DC) = 5 are specified for tp ≤ 100 µs and duty cycle D ≤ 2%, as shown in Figure 8. Pulse operation must respect VCEO derating above 25 °C.
What is the typical transition frequency (fT) and how is it measured?
fT = 250 MHz is measured under conditions IC = 20 mA, VCE = 5 V, f = 100 MHz using high-frequency S-parameter analysis. This value reflects unity-gain bandwidth in common-emitter configuration and remains stable across −55 °C to +125 °C per characterization data in Figure 7.
BCX70JE6433HTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 550mV @ 1.25mA, 50mA
- Current - Collector Cutoff (Max):
- 20nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 2mA, 5V
- Power - Max:
- 330 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BCX70JE6433HTMA1 FAQ
1.How can I place an order for BCX70JE6433HTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX70JE6433HTMA1 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 BCX70JE6433HTMA1 reliable?
The price and inventory of BCX70JE6433HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX70JE6433HTMA1 is usually 5 days.
3.What payment methods are accepted for BCX70JE6433HTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX70JE6433HTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX70JE6433HTMA1?
BCX70JE6433HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX70JE6433HTMA1 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 BCX70JE6433HTMA1?
For technical support, including BCX70JE6433HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX70JE6433HTMA1 requirements.
6.How does Aetrix verify that BCX70JE6433HTMA1 is sourced from the original manufacturer or authorized distributors?
All BCX70JE6433HTMA1 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 BCX70JE6433HTMA1 meets industry standards.
7.What is the process for return or replacement of BCX70JE6433HTMA1?
All BCX70JE6433HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX70JE6433HTMA1, 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 BCX70JE6433HTMA1 part is unused and in its original packaging.
Return procedure for BCX70JE6433HTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCX70JE6433HTMA1 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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