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Infineon Technologies BC858BWH6327XTSA1
- Part No.:
- BC858BWH6327XTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC858BWH6327XTSA1.pdf
- Description:
- TRANS PNP 30V 0.1A PG-SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,477
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Product details
Overview
BC858BWH6327XTSA1 from Infineon Technologies is a PNP silicon small-signal transistor designed for audio-frequency input stages and driver circuits. It features VCEO = 30 V, hFE = 220–480 (at IC = 2 mA), VCE(sat) ≤ 300 mV (at IC = 10 mA / IB = 0.5 mA), fT = 250 MHz, and is qualified to AEC-Q101 for automotive use in biasing and signal amplification paths.
For engineers reviewing the BC858BWH6327XTSA1 datasheet, BC858BWH6327XTSA1 pinout, BC858BWH6327XTSA1 application, or BC858BWH6327XTSA1 equivalent, key selection criteria include DC current gain group B, SOT323 package thermal performance (RthJS ≤ 105 K/W), low-noise operation below 15 kHz, and complementary pairing with BC848B NPN devices in differential amplifier designs.
Technical Context
This PNP transistor operates in linear active and saturation regions for analog signal conditioning and switching control. Its hFE grouping (B) ensures predictable current amplification across production lots, while the 30 V VCEO rating supports rail-to-rail operation in 24 V automotive subsystems and low-voltage industrial logic interfaces.
The device exhibits low base-emitter on-voltage (VBE(ON) = 650–750 mV at IC = 2 mA), tight VCE(sat) distribution (≤300 mV), and 1.5 pF Ccb, enabling stable gain and minimal Miller effect in high-frequency AF driver stages up to 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Supports operation in 24 V automotive supply rails with margin for transients |
| hFE (IC = 2 mA) | 220–480 - Enables precise bias network design with predictable collector current scaling |
| VCE(sat) | ≤300 mV @ IC/IB = 10 mA/0.5 mA - Minimizes power loss and self-heating in saturated switch applications |
| fT | 250 MHz - Ensures adequate bandwidth for audio pre-amplifier and tone-control feedback loops |
| Ccb | 1.5 pF - Limits high-frequency instability and phase shift in multi-stage AC-coupled amplifiers |
| Noise figure | 1–4 dB @ 1 kHz - Meets low-noise requirements for microphone preamp and sensor interface front-ends |
| RthJS | ≤105 K/W - Allows 250 mW dissipation at TS ≤ 124 °C in SOT323 footprint without heatsinking |
Pinout & Package
BC858BWH6327XTSA1 is housed in a RoHS-compliant SOT323 (SC-70) plastic surface-mount package with standard pin assignment: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Receives forward-biased current to regulate collector-emitter conduction; requires current-limiting resistor in linear bias networks |
| 2 (Emitter) | Common reference node | Connected to ground or negative rail in common-emitter configurations; sets emitter voltage for VBE-based biasing |
| 3 (Collector) | Output current path | Sinks load current in PNP switch mode; supplies amplified current to next stage in common-emitter amplifier topology |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood temperature cycling (−40 °C to +150 °C junction), ensuring reliability in engine control modules |
| Low VCE(sat) | ≤300 mV enables <10 mW conduction loss at 10 mA, critical for battery-powered sensor nodes |
| Group B hFE binning | Narrow DC current gain spread (220–480) simplifies matching in differential pair and current mirror implementations |
| Low-noise AF performance | 1–4 dB noise figure below 15 kHz supports high-fidelity audio signal routing in infotainment head units |
| Complementary NPN pairing | Designed as PNP counterpart to BC848B, enabling matched dual-transistor topologies in push-pull output stages |
Applications
| Automotive Door Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Level-shifting and current buffering for LIN bus wake-up detection circuitry. IC Role / Device Role / Timing Role: PNP switch controlling pull-down path to enable microcontroller reset assertion during bus activity. Use Value: Low VCE(sat) ensures <50 µA leakage into MCU reset pin during sleep, meeting ISO 11898-3 quiescent current targets. | Use Scenario: Amplifying low-level thermistor or RTD bridge outputs in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: First-stage DC-coupled amplifier in instrumentation-grade signal chain with precision bias network. Use Value: Group B hFE binning reduces gain error to ±3% across temperature, improving 16-bit ADC effective resolution. |
| Consumer Audio Pre-amplifier | Medical Patient Monitor Front-end |
Use Scenario: Input stage of portable headphone amplifier driving 32 Ω loads. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration for linearity control. Use Value: 250 MHz fT and 1.5 pF Ccb maintain flat 20 Hz–20 kHz response with <0.05% THD+N at 1 Vpp. | Use Scenario: Isolated ECG electrode biasing and lead-off detection circuitry. IC Role / Device Role / Timing Role: Low-noise PNP current source establishing patient bias voltage while rejecting common-mode interference. Use Value: 1 dB noise figure at 1 kHz and <5 nV/√Hz input noise density preserve microvolt-level biopotential signal integrity. |
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 |
|---|---|---|---|
| BC858BW | Same die, SOT323 package, identical hFE group B, but non-AEC-Q101 rated | Limited to commercial-grade consumer electronics where automotive qualification is not required | Select when cost sensitivity outweighs automotive reliability requirements |
| MMBT858 | Same electrical specs, SOT23 package, RthJS = 240 K/W (vs. 105 K/W), no AEC-Q101 certification | Lower power handling (330 mW vs. 250 mW derated) limits use in thermally constrained PCB layouts | Choose only if SOT23 footprint compatibility is mandatory and thermal margin >40 °C exists |
Compared with BC858BW and MMBT858, BC858BWH6327XTSA1 delivers superior thermal resistance (105 K/W), guaranteed AEC-Q101 compliance, and tighter parametric consistency-making it the preferred choice for automotive body electronics and industrial systems requiring long-term reliability under thermal stress.
Availability
BC858BWH6327XTSA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial sensor signal conditioners, consumer audio pre-amplifiers, and medical patient monitor front-ends requiring stable component supply across extended product lifecycles.
Supply support for BC858BWH6327XTSA1 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 ICs, and discrete power devices, with global manufacturing and quality certification to IATF 16949.
The BC856–BC860 family was developed for high-reliability analog signal path applications in automotive and industrial environments, emphasizing low-noise AF performance, AEC-Q101 qualification, and complementary NPN/PNP pairing for balanced circuit design.
FAQ
What is the maximum junction temperature for BC858BWH6327XTSA1?
The absolute maximum junction temperature is 150 °C, validated per AEC-Q101 stress testing. Operation above this limit risks permanent degradation of hFE and increased leakage. Derating curves in the datasheet show that at 124 °C soldering point temperature, 250 mW total power dissipation is permitted in the SOT323 package.
Is BC858BWH6327XTSA1 pin-compatible with BC848B?
No-BC858BWH6327XTSA1 is a PNP transistor with pinout Base–Emitter–Collector (1–2–3), while BC848B is an NPN device with identical SOT323 pinout but opposite polarity. They are complementary-not pin-compatible-and must be used in matched pairs with reversed biasing and current flow direction.
Does BC858BWH6327XTSA1 support pulsed operation beyond its DC ratings?
Yes-permissible pulse load capability is defined by duty cycle and pulse width. At D = 0.02 (2%) and tp = 100 µs, peak power can reach 5× DC rating (1.25 W). Pulse derating curves confirm safe operation up to 10 ms pulses with D ≤ 0.005, provided average power remains within 250 mW limits.
How does the noise performance of BC858BWH6327XTSA1 compare to BC857B?
BC858BWH6327XTSA1 has identical noise figure (1–4 dB) and equivalent noise voltage (0.11 µV) to BC857B at 1 kHz, as both share the same die process and geometry. The primary distinction lies in VCEO: BC857B is rated for 45 V, while BC858B is optimized for 30 V operation with tighter VCE(sat) and improved thermal resistance in SOT323.
BC858BWH6327XTSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 650mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 220 @ 2mA, 5V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT323
BC858BWH6327XTSA1 FAQ
1.How can I place an order for BC858BWH6327XTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC858BWH6327XTSA1 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 BC858BWH6327XTSA1 reliable?
The price and inventory of BC858BWH6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC858BWH6327XTSA1 is usually 5 days.
3.What payment methods are accepted for BC858BWH6327XTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC858BWH6327XTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC858BWH6327XTSA1?
BC858BWH6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC858BWH6327XTSA1 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 BC858BWH6327XTSA1?
For technical support, including BC858BWH6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC858BWH6327XTSA1 requirements.
6.How does Aetrix verify that BC858BWH6327XTSA1 is sourced from the original manufacturer or authorized distributors?
All BC858BWH6327XTSA1 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 BC858BWH6327XTSA1 meets industry standards.
7.What is the process for return or replacement of BC858BWH6327XTSA1?
All BC858BWH6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC858BWH6327XTSA1, 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 BC858BWH6327XTSA1 part is unused and in its original packaging.
Return procedure for BC858BWH6327XTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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