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Nexperia USA Inc. BC817-25QC-QZ
- Part No.:
- BC817-25QC-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC817-25QC-QZ.pdf
- Description:
- TRANS NPN 45V 0.5A DFN1412D-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,428
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Product details
Overview
BC817-25QC-Q from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in a leadless DFN1412D-3 (SOT8009) package with side-wettable flanks, delivering hFE of 160–400 at VCE = 1 V and IC = 100 mA, qualified to AEC-Q101 for automotive body electronics and space-constrained switching applications.
For engineers reviewing the BC817-25QC-Q datasheet, BC817-25QC-Q pinout, BC817-25QC-Q application, or BC817-25QC-Q equivalent, this device supports high-density PCB layouts requiring AOI-compatible solder joints, low-profile mounting (0.48 mm height), and stable DC gain across -55 °C to 150 °C ambient operation.
Technical Context
This NPN bipolar junction transistor operates as a linear amplifier or saturated switch with VCEO = 45 V and IC = 500 mA continuous rating, supporting pulse currents up to 1 A (tp ≤ 1 ms). Its DFN1412D-3 package enables thermal resistance of 261 K/W on 70 μm FR4 copper, critical for thermally constrained automotive modules.
The device exhibits VCE(sat) ≤ 700 mV at IC = 500 mA / IB = 50 mA and fT ≥ 100 MHz at VCE = 5 V, IC = 10 mA, making it suitable for medium-speed digital switching and analog signal amplification in 12 V/24 V vehicle subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown under open-base conditions; defines safe operating range in 24 V automotive power rails. |
| IC | 500 mA - Continuous DC collector current rating; supports load switching up to ~6 W at 12 V with adequate heatsinking. |
| hFE | 160–400 - DC current gain at VCE = 1 V, IC = 100 mA; ensures reliable base drive margin for logic-level control in microcontroller interfaces. |
| VCE(sat) | ≤ 700 mV - Collector-emitter saturation voltage at IC = 500 mA / IB = 50 mA; minimizes conduction loss in high-duty-cycle switching. |
| fT | ≥ 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; enables use in PWM-driven LED dimming and sensor signal conditioning up to ~10 MHz. |
| Ptot | 480 mW - Total power dissipation on 70 μm FR4 PCB; sets thermal design boundary for compact layout without forced airflow. |
| Tj | 150 °C - Maximum junction temperature; allows operation in under-hood environments with ambient up to 125 °C. |
Pinout & Package
DFN1412D-3 (SOT8009) is a 3-terminal, leadless, ultra-thin plastic package measuring 1.4 × 1.2 × 0.48 mm with side-wettable flanks for automated optical inspection (AOI) of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal accepting current-limited drive from MCU GPIO or logic buffer; requires series resistor to limit IB per hFE target. |
| 2 | Emiter (E) | Reference node tied to system ground or low-side return path; forms common-emitter configuration for standard switching topology. |
| 3 | Collector (C) | High-current output node connected to load (e.g., relay coil, LED string); must be routed with adequate copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including body control modules and lighting drivers, with guaranteed reliability over temperature cycling and humidity exposure. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder fillets on all three terminals, eliminating X-ray requirement for production line quality assurance. |
| 0.48 mm package height | Reduces board stack height in multi-layer assemblies such as ADAS camera modules and infotainment head units where Z-axis clearance is constrained. |
| Three hFE bins | BC817-25QC-Q's 160–400 gain range allows precise current mirror matching and consistent turn-on thresholds across production batches. |
| Thermal enhancement | 261 K/W Rth(j-a) on 70 μm FR4 enables >300 mW sustained dissipation without external heatsink-critical for sealed enclosures. |
Applications
| Automotive Body Control | LED Driver Circuit |
|---|---|
|
Use Scenario: Driving door lock actuators and interior lamp loads in 12 V vehicle electrical architecture. IC Role / Device Role / Timing Role: NPN switch controlling ground-return path for resistive/inductive loads; operates in saturation with <1 µs turn-off delay. Use Value: AEC-Q101 qualification ensures 15-year field reliability; low VCE(sat) reduces heat generation in sealed junction boxes. |
Use Scenario: Constant-current sink for RGB LED backlighting in instrument cluster displays. IC Role / Device Role / Timing Role: Linear current regulator configured with emitter resistor; maintains stable brightness across battery voltage variation (9–16 V). Use Value: Tight hFE binning (160–400) enables accurate current setting with ±5% tolerance using standard 1% resistors. |
| Industrial Sensor Interface | Space-Constrained Power Switch |
|
Use Scenario: Level-shifting and buffering analog signals from 3.3 V microcontrollers to 5 V/12 V industrial sensors. IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed bias network; provides 20 dB voltage gain at DC–100 kHz bandwidth. Use Value: fT ≥ 100 MHz ensures minimal phase shift in feedback paths; low Cc = 3 pF prevents instability in op-amp driver stages. |
Use Scenario: Low-profile load switch in portable medical devices where PCB thickness must remain <1.6 mm. IC Role / Device Role / Timing Role: High-side or low-side discrete switch replacing larger SOT-23 alternatives; controlled via PWM from ARM Cortex-M0+. Use Value: DFN1412D-3 footprint saves 62% board area vs. SOT-23; side-wettable flanks eliminate manual solder inspection. |
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 |
|---|---|---|---|
| BC817-25,215 (SOT-23) | Same silicon die but in legacy SOT-23 package; Rth(j-a) = 350 K/W (vs. 261 K/W); no side-wettable flanks. | Lacks AOI support and thermal performance; unsuitable for automotive production lines requiring solder-joint verification. | Select only for cost-sensitive non-automotive prototypes where board space and thermal margin are not limiting. |
| MMBT3904LT1G | Lower VCEO = 40 V; hFE = 100–300; Rth(j-a) = 300 K/W; not AEC-Q101 qualified. | Not rated for 45 V transients in 24 V truck systems; gain spread limits precision current regulation. | Acceptable for consumer-grade 5 V/12 V logic interfacing but not for automotive or industrial safety-critical functions. |
Compared with BC817-25,215 and MMBT3904LT1G, BC817-25QC-Q delivers superior thermal performance, AOI compatibility, and automotive qualification-making it the only choice when board-level reliability, manufacturability, and environmental robustness are mandatory.
Availability
BC817-25QC-Q is available at Aetrix Electronics and suitable for automotive body electronics, LED driver circuits, industrial sensor interfaces, and space-constrained power switches requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for BC817-25QC-Q 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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BC817QC-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, engineered specifically for automotive body electronics and industrial control applications demanding robust thermal behavior and AOI-ready packaging.
FAQ
What is the maximum allowable junction temperature for BC817-25QC-Q?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Absolute Maximum Ratings table. Operation above this threshold risks permanent degradation of hFE and increased leakage current. Derating curves in Figure 1 confirm usable power dissipation drops to zero at 150 °C ambient when mounted on standard FR4.
Does BC817-25QC-Q support reflow soldering with standard lead-free profiles?
Yes-Nexperia specifies full compatibility with IPC/JEDEC J-STD-020D.2 lead-free reflow profiles, including peak temperatures up to 260 °C for ≤ 30 seconds. The DFN1412D-3 package outline (Figure 16) and recommended stencil design (Figure 17) ensure reliable wetting of side-wettable flanks during standard convection reflow.
How does the hFE binning of BC817-25QC-Q compare to BC817-16QC-Q and BC817-40QC-Q?
BC817-25QC-Q has a guaranteed hFE range of 160–400 at VCE = 1 V and IC = 100 mA, positioned between BC817-16QC-Q (100–250) and BC817-40QC-Q (250–600). This mid-range bin enables predictable base drive requirements for 100–500 mA loads without excessive gain variability.
Can BC817-25QC-Q replace BC847C in existing designs?
No-BC847C has VCEO = 45 V but uses SOT-23 packaging and lacks AEC-Q101 qualification. While electrical parameters overlap, BC817-25QC-Q's DFN1412D-3 footprint, side-wettable flanks, and automotive qualification require PCB layout revision and process validation; it is not a drop-in replacement.
BC817-25QC-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- 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:
- 380 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1412D-3
BC817-25QC-QZ FAQ
1.How can I place an order for BC817-25QC-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-25QC-QZ 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 BC817-25QC-QZ reliable?
The price and inventory of BC817-25QC-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-25QC-QZ is usually 5 days.
3.What payment methods are accepted for BC817-25QC-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-25QC-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-25QC-QZ?
BC817-25QC-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-25QC-QZ 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 BC817-25QC-QZ?
For technical support, including BC817-25QC-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-25QC-QZ requirements.
6.How does Aetrix verify that BC817-25QC-QZ is sourced from the original manufacturer or authorized distributors?
All BC817-25QC-QZ 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 BC817-25QC-QZ meets industry standards.
7.What is the process for return or replacement of BC817-25QC-QZ?
All BC817-25QC-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC817-25QC-QZ, 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 BC817-25QC-QZ part is unused and in its original packaging.
Return procedure for BC817-25QC-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-25QC-QZ Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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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
onsemi
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BC847B,215
Nexperia USA Inc.
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
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