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Infineon Technologies BC 817-25 B5003
- Part No.:
- BC 817-25 B5003
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC 817-25 B5003.pdf
- Description:
- TRANS NPN 45V 0.5A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,808
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Product details
Overview
BC817-25 B5003 from Nexperia is an NPN silicon general-purpose audio-frequency transistor in SOT23 package, rated for 45 V VCEO, 500 mA IC, and minimum hFE of 160 at 100 mA/1 V; used in low-voltage switching and linear amplification stages of power management and signal conditioning circuits.
For engineers reviewing the BC817-25 B5003 datasheet, BC817-25 B5003 pinout, BC817-25 B5003 application, or BC817-25 B5003 equivalent, key selection criteria include verified hFE group 25 performance, VCE(sat) ≤ 0.7 V at 500 mA/50 mA drive, RoHS-compliant SOT23 footprint, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with DC current gain (hFE) specified across collector currents from 10 mA to 500 mA and temperatures from –40 °C to 150 °C. Its low VCE(sat) and high IC rating support efficient switching in 5–24 V rail applications.
The device features a maximum fT of 170 MHz at 50 mA/5 V, enabling use in AF amplifiers and low-speed digital interfaces. Cutoff characteristics (ICBO ≤ 0.1 µA at 25 V, IEBO ≤ 100 nA) ensure stable biasing in temperature-varying environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC | 500 mA - Continuous collector current handling capacity under thermal limits (TS ≤ 115 °C) |
| hFE (min) | 160 - Minimum DC current gain at 100 mA IC, 1 V VCE, defining base drive sizing for saturation |
| VCE(sat) | ≤ 0.7 V - Collector-emitter voltage drop in hard saturation at 500 mA IC/50 mA IB, limiting conduction loss |
| fT | 170 MHz - Transition frequency indicating usable bandwidth for small-signal amplification up to ~10 MHz |
| Ptot | 500 mW - Total power dissipation limit at TS = 115 °C, defining thermal derating envelope |
| RthJS | ≤ 70 K/W - Junction-to-solder-point thermal resistance, critical for PCB copper area design |
Pinout & Package
BC817-25 B5003 is housed in a standard SOT23 plastic surface-mount package with gull-wing leads, optimized for automated placement and reflow soldering on 1.0 mm pitch PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal for forward-biased junction; requires current-limited drive to achieve target hFE-based collector current |
| 2 | Emitter (E) | Current return path; connected to ground or low-side reference in common-emitter configurations |
| 3 | Collector (C) | Output current path; handles full load current and dissipates power during switching transitions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HAST), supporting under-hood deployment |
| RoHS-compliant packaging | Lead-free SOT23 construction meeting EU Directive 2011/65/EU, eliminating hazardous substances in assembly |
| High hFE group 25 | Guaranteed 160–250 hFE range ensures consistent base drive margin across production lots |
| Low VCE(sat) | ≤ 0.7 V at rated IC/IB reduces power loss and thermal rise in switching regulators and LED drivers |
| Thermal robustness | Junction temperature rating up to 150 °C enables operation in compact enclosures without forced cooling |
Applications
| Automotive Lighting Control | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving 12 V incandescent or LED lamps in body control modules with PWM dimming. IC Role / Device Role / Timing Role: Low-side switch controlling lamp current via base-driven saturation. Use Value: VCE(sat) ≤ 0.7 V minimizes heat generation at 300–500 mA loads, extending PCB trace life. | Use Scenario: Amplifying millivolt-level outputs from RTDs or bridge sensors in PLC analog input cards. IC Role / Device Role / Timing Role: Linear amplifier stage with fixed-gain bias network. Use Value: Stable hFE over –40 °C to 85 °C ensures consistent gain calibration across operating temperature range. |
| Consumer Power Supply Feedback | IoT Device Load Switching |
Use Scenario: Isolating optocoupler feedback signals in 5 V/12 V offline SMPS secondary-side regulation loops. IC Role / Device Role / Timing Role: Digital interface translator converting opto output to clean logic-level enable signal. Use Value: Fast turn-on/off (fT = 170 MHz) supports >100 kHz loop response without phase lag. | Use Scenario: Enabling/disabling peripheral rails (e.g., Wi-Fi module, display backlight) in battery-powered edge nodes. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by microcontroller GPIO. Use Value: 500 mA IC rating and 100% tested RthJS ≤ 70 K/W allow reliable operation with minimal heatsinking. |
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 |
|---|---|---|---|
| BC847B,215 | Lower IC (100 mA), higher hFE (200–450), same SOT23 package | Not suitable for >200 mA switching; preferred in low-power amplification where gain stability dominates | Select when base drive current is constrained and load current remains <200 mA |
| MMBT3904LT1G | Higher VCEO (40 V), identical hFE group (100–300), same SOT23 footprint | Marginally lower saturation voltage (VCE(sat) ≤ 0.2 V @ 10 mA), but unqualified for automotive use | Choose for cost-sensitive industrial controls where AEC-Q101 is not required |
Compared with BC817-25 B5003, BC847B offers superior gain but insufficient current handling for 500 mA loads, while MMBT3904LT1G provides tighter VCE(sat) at low currents but lacks automotive qualification and thermal robustness at full rating.
Availability
BC817-25 B5003 is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor signal conditioning, and IoT device load switching requiring stable component supply and long-term lifecycle assurance.
Supply support for BC817-25 B5003 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-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
BC817-25 B5003 belongs to the BC817K series of AEC-Q101-qualified general-purpose NPN transistors designed specifically for automotive body electronics and industrial control systems demanding robust parametric consistency.
FAQ
Is BC817-25 B5003 pin-compatible with BC817-40 or BC818-25?
Yes - all BC817K and BC818K variants share identical SOT23 pinout (1=B, 2=E, 3=C) and mechanical footprint. However, electrical parameters differ: BC817-40 has hFE = 250–400, while BC818-25 has lower VCEO (25 V) and VCBO (30 V), making them non-interchangeable without circuit validation.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current (IBM) is 200 mA, but continuous base current must be limited to ≤100 mA per datasheet ratings. For reliable 500 mA collector switching, typical design uses IB = 50 mA (hFE ≥ 10), ensuring deep saturation without thermal overstress at TS ≤ 115 °C.
Does BC817-25 B5003 support pulsed operation beyond 500 mA?
Yes - peak collector current (ICM) is rated at 1000 mA for pulse widths <300 µs and duty cycle <2%. This enables short-duration surge handling in motor commutation or solenoid driving, provided average power remains within Ptot = 500 mW and thermal resistance limits are respected.
How does the SOT23 package affect thermal performance compared to SOT323?
BC817-25 B5003 in SOT23 has RthJS ≤ 70 K/W, whereas SOT323-packaged variants (e.g., BC817-25W) have RthJS ≤ 80 K/W. The SOT23's larger copper exposure delivers ~14% better junction-to-solder-point heat transfer, allowing higher sustained power dissipation at equivalent board layout.
BC 817-25 B5003 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):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 700mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 160 @ 100mA, 1V
- Power - Max:
- 330 mW
- Frequency - Transition:
- 170MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BC 817-25 B5003 FAQ
1.How can I place an order for BC 817-25 B5003 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC 817-25 B5003 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 BC 817-25 B5003 reliable?
The price and inventory of BC 817-25 B5003 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC 817-25 B5003 is usually 5 days.
3.What payment methods are accepted for BC 817-25 B5003?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC 817-25 B5003 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC 817-25 B5003?
BC 817-25 B5003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC 817-25 B5003 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 BC 817-25 B5003?
For technical support, including BC 817-25 B5003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC 817-25 B5003 requirements.
6.How does Aetrix verify that BC 817-25 B5003 is sourced from the original manufacturer or authorized distributors?
All BC 817-25 B5003 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 BC 817-25 B5003 meets industry standards.
7.What is the process for return or replacement of BC 817-25 B5003?
All BC 817-25 B5003 units undergo pre-shipment inspection (PSI). If there is an issue with BC 817-25 B5003, 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 BC 817-25 B5003 part is unused and in its original packaging.
Return procedure for BC 817-25 B5003:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC 817-25 B5003 Tags
-
MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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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
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
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MMBT2222ALT1G
onsemi
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