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Nexperia USA Inc. BC817-25-QVL
- Part No.:
- BC817-25-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC817-25-QVL.pdf
- Description:
- TRANS NPN 45V 0.5A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,181
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Product details
Overview
BC817-25-QVL from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in SOT23 (TO-236AB) package, optimized for automotive-grade switching and linear amplification with hFE of 160–400 at VCE = 1 V and IC = 100 mA, VCE(sat) ≤ 700 mV at IC = 500 mA/IB = 50 mA, and qualified to AEC-Q101.
For engineers reviewing the BC817-25-QVL datasheet, BC817-25-QVL pinout, BC817-25-QVL application, or BC817-25-QVL equivalent, this device is selected for cost-sensitive, thermally constrained automotive body electronics, industrial sensor interfaces, and low-power logic-level switching where gain consistency and thermal reliability are critical.
Technical Context
This NPN bipolar junction transistor operates as a current-controlled switch or small-signal amplifier with fixed emitter-base and collector-base junction structures. Its DC current gain (hFE) is binned to 160–400, enabling predictable base drive design across temperature (−55 °C to 150 °C).
It supports pulsed operation up to 1 A peak collector current (tp ≤ 1 ms), exhibits 3 pF collector capacitance at 10 V, and delivers 100 MHz transition frequency (fT) under VCE = 5 V, IC = 10 mA conditions - confirming suitability for medium-speed digital and analog signal handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with open base; defines upper rail limit in switching circuits. |
| IC | 500 mA continuous - Sustained load current capability at Tamb = 25 °C; sets maximum steady-state output drive. |
| hFE | 160–400 at VCE = 1 V, IC = 100 mA - Confirmed DC current gain range for reliable base resistor calculation. |
| VCE(sat) | ≤ 700 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage ensures minimal power loss and heat generation in on-state switching. |
| fT | 100 MHz - Transition frequency confirms usable bandwidth for audio-frequency amplification and <10 MHz digital signal buffering. |
| Rth(j-a) | 500 K/W (standard footprint) - Thermal resistance informs PCB copper area requirements for thermal management at full load. |
Pinout & Package
SOT23 (TO-236AB) surface-mount plastic package with 3 leads, 1.3 mm × 2.9 mm footprint, and standard reflow-compatible solder pad layout per Figure 17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation or linear biasing. |
| 2 | Emitter (E) | Common reference terminal; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current terminal; carries switched load current and connects to VCC via load in high-side switching or to ground in low-side switching. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including body control modules and lighting drivers requiring extended temperature and reliability compliance. |
| Three hFE selections | BC817-25-Q's 160–400 gain bin enables precise base drive sizing without overdesign or marginal turn-on in production. |
| Low VCE(sat) | ≤ 700 mV at rated IC/IB reduces conduction losses and eases thermal design in space-constrained PCBs. |
| 100 MHz fT | Supports stable amplification up to ~10 MHz and fast edge response in digital interface circuits. |
Applications
| Automotive Door Module Switching | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving 12 V solenoid locks and LED status indicators in door control units. IC Role / Device Role / Timing Role: NPN switch controlling load current with TTL/CMOS-compatible base drive. Use Value: AEC-Q101 qualification ensures long-term reliability under vehicle vibration and thermal cycling; low VCE(sat) minimizes self-heating during repeated actuation. |
Use Scenario: Amplifying millivolt-level outputs from RTD or thermistor bridges into ADC-input ranges. IC Role / Device Role / Timing Role: Small-signal linear amplifier in common-emitter configuration with emitter degeneration. Use Value: Tight hFE bin (160–400) enables consistent gain calibration across production batches; 100 MHz fT preserves signal fidelity up to 10 kHz. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Interface |
|
Use Scenario: Enabling/disabling 24 V DC brush motors in smart HVAC actuators and coffee makers. IC Role / Device Role / Timing Role: Low-side switch interfacing microcontroller GPIO to motor driver stage. Use Value: 500 mA continuous rating supports typical appliance motor stall currents; SOT23 footprint saves board space vs. larger TO-92 alternatives. |
Use Scenario: Isolating and level-shifting analog signals between patient-connected sensors and isolated MCU subsystems. IC Role / Device Role / Timing Role: Discrete transistor used in optocoupler driver or analog buffer stage with galvanic separation. Use Value: Low leakage (ICBO ≤ 100 nA) maintains signal integrity in high-impedance diagnostic paths; 150 °C max junction temperature supports sealed enclosure operation. |
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 |
|---|---|---|---|
| BC817-25 | No AEC-Q101 qualification; identical electrical specs and SOT23 package. | Not approved for automotive use; suitable for commercial/industrial equipment only. | Select when automotive qualification is unnecessary and cost sensitivity is higher. |
| MMBT3904LT1G | hFE = 100–300 (lower max gain); VCEO = 40 V; same SOT23 package. | Marginally lower voltage headroom and gain consistency; widely available but not automotive-qualified. | Choose for legacy designs or non-automotive systems where 40 V rating suffices and gain tolerance is acceptable. |
Compared with BC817-25-QVL, BC817-25 lacks automotive qualification but matches all electrical parameters, while MMBT3904LT1G trades 5 V lower breakdown voltage and narrower hFE range for broader commercial availability - making BC817-25-QVL the optimal choice when AEC-Q101 compliance and gain stability are mandatory.
Availability
BC817-25-QVL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for BC817-25-QVL 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 leadership in automotive-qualified components and advanced packaging.
The BC817-Q series targets cost-effective, robust NPN switching and amplification in automotive and industrial environments, emphasizing AEC-Q101 compliance, tight gain binning, and thermal resilience in compact SOT23 form factor.
FAQ
Is BC817-25-QVL pin-compatible with BC847 variants?
No. BC817-25-QVL uses standard SOT23 pinout (1=B, 2=E, 3=C), while BC847 variants follow the same physical layout but differ in gain binning, voltage ratings (VCEO = 45 V for both), and qualification status. Electrical substitution requires verification of hFE, VCE(sat), and application temperature range - BC847C lacks AEC-Q101 certification.
What is the maximum allowable PCB temperature rise for continuous 500 mA operation?
At 500 mA continuous, junction temperature must stay ≤150 °C. With Rth(j-a) = 500 K/W (standard FR4 footprint), ambient must remain ≤75 °C to limit ΔT to 75 K - meaning PCB local temperature rise should not exceed 50 °C above ambient to maintain safety margin. Use 1 cm² collector pad to reduce Rth(j-a) to 362 K/W if higher ambient is expected.
Can BC817-25-QVL be used in linear regulator pass transistor applications?
Yes, but with strict thermal derating. Its 345 mW max power dissipation (with 1 cm² collector pad) limits usable dropout voltage × load current product. At 500 mA, maximum safe VCE is 690 mV - suitable only for ultra-low-dropout LDO auxiliary stages, not main regulation. Always verify junction temperature using actual PCB layout thermal resistance.
Does the "QVL" suffix indicate tape-and-reel packaging or a specific quality grade?
The "QVL" suffix denotes Nexperia's automotive-qualified version with AEC-Q101 certification and enhanced traceability - not packaging format. Packaging is standard SOT23 tape-and-reel (3000 pcs/reel) unless otherwise ordered; "QVL" confirms full automotive test screening, lot traceability, and extended temperature validation per AEC-Q101 Rev G.
BC817-25-QVL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC817-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC817-25-QVL FAQ
1.How can I place an order for BC817-25-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-25-QVL 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 BC817-25-QVL reliable?
The price and inventory of BC817-25-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-25-QVL is usually 5 days.
3.What payment methods are accepted for BC817-25-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-25-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-25-QVL?
BC817-25-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-25-QVL 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 BC817-25-QVL?
For technical support, including BC817-25-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-25-QVL requirements.
6.How does Aetrix verify that BC817-25-QVL is sourced from the original manufacturer or authorized distributors?
All BC817-25-QVL 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 BC817-25-QVL meets industry standards.
7.What is the process for return or replacement of BC817-25-QVL?
All BC817-25-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BC817-25-QVL, 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 BC817-25-QVL part is unused and in its original packaging.
Return procedure for BC817-25-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-25-QVL Tags
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MMBT3906LT1G
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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MMBTA06LT1G
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