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Infineon Technologies BCX71JE6327HTSA1
- Part No.:
- BCX71JE6327HTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCX71JE6327HTSA1.pdf
- Description:
- TRANS PNP 45V 0.1A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:44,795
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Product details
Overview
BCX71JE6327HTSA1 from Infineon Technologies is a PNP silicon small-signal transistor in SOT-23 package, designed for audio-frequency input stages and driver circuits. It delivers VCEO = 45 V, hFE = 40–100 (at IC = 10 µA), VCE(sat) ≤ 0.25 V (at IC = 50 mA), and fT = 250 MHz - enabling low-noise amplification in portable audio preamps and level-shifting interfaces.
For engineers reviewing the BCX71JE6327HTSA1 datasheet, BCX71JE6327HTSA1 pinout, BCX71JE6327HTSA1 application, or BCX71JE6327HTSA1 equivalent, key selection criteria include guaranteed hFE group J (min 40 at 10 µA), AEC-Q101 qualification for automotive-grade reliability, RoHS-compliant SOT-23 packaging, and validated low-noise performance below 15 kHz.
Technical Context
This PNP transistor operates with emitter-grounded configuration and supports linear amplification up to 15 kHz with F ≤ 2 dB (IC = 200 µA). Its hFE group J ensures consistent current gain across production lots, while the 45 V VCEO rating enables use in 24 V rail systems with margin.
The device exhibits Ccb = 1.5 pF and Ceb = 8 pF at specified bias points, supporting stable high-frequency response in cascode or common-emitter topologies. Thermal resistance RthJS ≤ 240 K/W allows reliable operation up to Tj = 150 °C under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Supports 24 V system rails with 88% voltage headroom before breakdown |
| hFE (IC = 10 µA) | 40–100 - Group J guarantees minimum gain for bias stability in low-current amplifier stages |
| VCE(sat) | ≤ 0.25 V @ IC = 50 mA - Minimizes power loss and self-heating in switching/driver applications |
| fT | 250 MHz - Enables stable small-signal amplification beyond audio band into RF front-end support |
| Noise Figure | 2 dB @ IC = 200 µA - Meets low-noise requirement for microphone preamplifiers and sensor signal conditioning |
| Ptot | 330 mW @ TS ≤ 71 °C - Defines maximum continuous dissipation in PCB-constrained thermal environments |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics including body control modules and lighting drivers |
Pinout & Package
SOT-23 plastic surface-mount package with gull-wing leads; compact footprint (2.9 × 1.3 × 1.0 mm) optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Base | Current-controlled input node; requires series resistor to limit IB ≤ 200 µA per max ratings |
| 2 (E) | Emitter | Common reference terminal; connected to higher potential in PNP operation; carries full load current |
| 3 (C) | Collector | Output terminal; sinks current to ground or lower-potential rail; rated for 45 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 0.25 V max at 50 mA enables >95% efficiency in discrete switch-mode driver stages |
| High hFE consistency | Group J binning ensures ±25% gain variation - simplifies bias network design across production batches |
| Low-noise operation | F = 2 dB at 1 kHz supports high-fidelity analog signal paths without added filtering |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, and ESD per automotive reliability standards |
Applications
| Audio Preamp Stage | Level-Shifting Interface |
|---|---|
Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors in battery-powered voice recorders. IC Role / Device Role / Timing Role: PNP common-emitter amplifier providing 20–40 dB voltage gain with minimal added noise. Use Value: 2 dB noise figure and 45 V VCEO allow direct coupling to 3.3 V/5 V rails while preserving SNR above 90 dB. | Use Scenario: Translating logic-level signals between 3.3 V microcontrollers and 12 V automotive actuators. IC Role / Device Role / Timing Role: Discrete PNP level shifter operating in saturation mode for fast edge transitions. Use Value: VCE(sat) ≤ 0.25 V ensures <100 mV voltage drop during ON state, minimizing actuator delay and power loss. |
| Automotive Body Control | Industrial Sensor Signal Conditioning |
Use Scenario: Driving LED indicators and small relays in door module ECUs subjected to -40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Switching transistor controlling load current with AEC-Q101 reliability assurance. Use Value: Junction temperature rating of 150 °C and qualified thermal cycling ensure 15+ year field life in under-hood environments. | Use Scenario: Buffering and amplifying millivolt-level outputs from RTDs or strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-noise active load in instrumentation amplifier front-ends. Use Value: Stable hFE over temperature and 8 pF Ceb prevent gain drift and capacitive loading errors in precision DC-coupled paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCX71KTA | hFE group K (min 100 at 10 µA); identical VCEO, VCE(sat), and package | Higher gain improves bias stability in high-impedance feedback networks but increases sensitivity to thermal drift | Select when circuit requires >100 hFE at low IC; verify thermal compensation in wide-temperature designs |
| MMBT4403LT1G | Lower VCEO (40 V), same SOT-23 package; hFE min 100 (IC = 10 mA), no AEC-Q101 qualification | Not suitable for automotive 24 V systems requiring 45 V margin; lacks extended temperature validation | Acceptable for industrial/commercial 12–24 V systems where AEC-Q101 is not mandated |
Compared with BCX71JE6327HTSA1, BCX71KTA offers higher gain for precision biasing but reduced thermal robustness, while MMBT4403LT1G trades automotive qualification for broader commercial availability and slightly lower voltage rating - guiding selection based on gain stability vs. environmental compliance requirements.
Availability
BCX71JE6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, portable audio preamplifiers, industrial sensor interface circuits, and level-shifting applications requiring stable component supply across long-lifecycle programs.
Supply support for BCX71JE6327HTSA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.
The BCX71 series belongs to Infineon's AEC-Q101-qualified small-signal transistor portfolio, engineered for reliability-critical roles in automotive signal conditioning, interface translation, and low-power amplification.
FAQ
What is the maximum continuous collector current for BCX71JE6327HTSA1?
The absolute maximum continuous collector current is 100 mA at TS ≤ 71 °C. At higher case temperatures, derating applies per the Ptot vs. TS curve - e.g., only 60 mA is sustainable at TS = 100 °C due to thermal limits. Peak pulsed current reaches 200 mA for tp ≤ 10 ms with duty cycle ≤ 2%.
Is BCX71JE6327HTSA1 suitable for linear amplifier applications?
Yes - its low noise figure (2 dB), flat hFE response up to 15 kHz, and stable VBE(ON) (0.65–0.78 V) make it well-suited for Class-A audio preamplifiers and instrumentation amplifier stages. Operation must remain within the safe operating area defined by VCEO, IC, and Ptot limits.
How does the hFE group J differ from other BCX71 variants?
Group J specifies hFE = 40–100 at IC = 10 µA and VCE = 5 V, distinguishing it from Group G (20–30), H (30–40), and K (100–150). This mid-range gain bin balances bias stability and thermal predictability - ideal for circuits where excessive gain would cause oscillation or drift.
Can BCX71JE6327HTSA1 replace BCW61J in existing designs?
No - BCW61J has VCEO = 32 V and is not AEC-Q101 qualified, whereas BCX71JE6327HTSA1 offers 45 V rating and automotive qualification. While pin-compatible and electrically similar, the higher voltage margin and reliability validation require layout and stress analysis updates before substitution in safety-critical systems.
BCX71JE6327HTSA1 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:
- Last Time Buy
- Transistor Type:
- PNP
- 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
BCX71JE6327HTSA1 FAQ
1.How can I place an order for BCX71JE6327HTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX71JE6327HTSA1 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 BCX71JE6327HTSA1 reliable?
The price and inventory of BCX71JE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX71JE6327HTSA1 is usually 5 days.
3.What payment methods are accepted for BCX71JE6327HTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX71JE6327HTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX71JE6327HTSA1?
BCX71JE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX71JE6327HTSA1 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 BCX71JE6327HTSA1?
For technical support, including BCX71JE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX71JE6327HTSA1 requirements.
6.How does Aetrix verify that BCX71JE6327HTSA1 is sourced from the original manufacturer or authorized distributors?
All BCX71JE6327HTSA1 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 BCX71JE6327HTSA1 meets industry standards.
7.What is the process for return or replacement of BCX71JE6327HTSA1?
All BCX71JE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX71JE6327HTSA1, 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 BCX71JE6327HTSA1 part is unused and in its original packaging.
Return procedure for BCX71JE6327HTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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