My Inquiry
My Account
Nexperia USA Inc. BC817-25QCH-QZ
- Part No.:
- BC817-25QCH-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC817-25QCH-QZ.pdf
- Description:
- TRANS NPN 45V 0.5A DFN1412D-3
- Quantity:
- Payment:
- Shipping:
Inventory:23,131
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC817-25QCH-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a DFN1412D-3 (SOT8009) leadless SMD package, rated for 45 V VCEO, 500 mA IC, and DC current gain (hFE) of 160–400 at VCE = 1 V and IC = 100 mA. It operates up to 175 °C junction temperature and supports automotive body electronics, LED drivers, and low-power switching in space-constrained PCBs.
For engineers reviewing the BC817-25QCH-Q datasheet, BC817-25QCH-Q pinout, BC817-25QCH-Q application, or BC817-25QCH-Q equivalent, key selection criteria include its AEC-Q101 qualification, side-wettable flanks for AOI-compatible solder joint inspection, 0.5 mm profile, and hFE binning optimized for stable biasing in linear and switching modes.
Technical Context
This device functions as a medium-power NPN bipolar junction transistor with fixed three-terminal topology (base, emitter, collector), designed for discrete amplification and on/off switching in automotive and industrial control circuits. Its DFN1412D-3 package enables high thermal efficiency via copper pad conduction and supports reflow-soldered automated assembly.
The BC817-25QCH-Q exhibits pulsed ICM = 1 A and VCEO = 45 V, with VCE(sat) ≤ 700 mV at IC = 500 mA / IB = 50 mA, and fT = 100 MHz - confirming suitability for low-frequency signal amplification and fast-switching digital logic interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in switching applications. |
| IC | 500 mA continuous - Sustained collector current capability at Tamb = 25 °C; sets load drive capacity in relay/LED drivers. |
| hFE | 160–400 at VCE = 1 V, IC = 100 mA - Tight DC current gain bin ensures predictable base drive requirements and stable bias points. |
| VCE(sat) | ≤ 700 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss and self-heating in power-switching duty. |
| Tj(max) | 175 °C - Enables operation in under-hood automotive environments and thermally dense PCB layouts without derating. |
| Ptot | 575 mW on 70 μm FR4 copper - Thermal performance validated for standard PCB construction, supporting reliable power dissipation. |
| Package | DFN1412D-3 (SOT8009) - 1.4 × 1.2 × 0.5 mm leadless package with side-wettable flanks for automated optical solder inspection. |
Pinout & Package
DFN1412D-3 (SOT8009) is a 3-terminal, leadless, thermally enhanced ultra-thin plastic package with exposed thermal pad (not electrically connected), 0.5 mm height, and side-wettable flanks for solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal for forward-biased injection of minority carriers; requires current-limited drive to achieve target hFE-based IC. |
| 2 | Emitter (E) | Current return path and reference node for VBE; tied to system ground or low-side switch common in most configurations. |
| 3 | Collector (C) | High-side output node handling switched load current; connects to VCC rail or inductive load in common-emitter topology. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including body control modules and lighting systems per stress test requirements. |
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray, reducing post-reflow defect escape. |
| 0.5 mm package height | Reduces board stack height in slim-profile consumer and automotive ECUs where Z-axis space is constrained. |
| Three hFE bins | BC817-25QCH-Q's 160–400 gain range allows precise matching for differential pairs or consistent channel-to-channel behavior. |
| 175 °C junction rating | Supports uninterrupted operation in high-ambient environments such as engine compartments or enclosed power supplies. |
Applications
| Automotive Body Control Unit | LED Driver Circuit |
|---|---|
|
Use Scenario: Switching 12 V incandescent and LED loads (e.g., interior lighting, door locks) in vehicle BCMs. IC Role / Device Role / Timing Role: Discrete NPN switch controlling load current path between battery rail and ground. Use Value: AEC-Q101 qualification and 175 °C Tj ensure reliability across temperature cycling and vibration profiles defined in ISO 16750. |
Use Scenario: Constant-current LED driver stage for dashboard backlighting and status indicators. IC Role / Device Role / Timing Role: Linear-mode current regulator using emitter degeneration resistor and base bias network. Use Value: Tight hFE bin (160–400) enables accurate current setting with minimal variance across production units. |
| Industrial Sensor Interface | Low-Power Logic-Level Translator |
|
Use Scenario: Amplifying weak analog signals from RTDs or Hall-effect sensors before ADC input. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with resistive collector load and emitter bypass. Use Value: fT = 100 MHz and low Cc = 3 pF support bandwidths sufficient for <10 MHz sensor signal conditioning. |
Use Scenario: Level-shifting 3.3 V microcontroller GPIO to drive 5 V or 12 V peripheral enable lines. IC Role / Device Role / Timing Role: Digital switch operating in saturation/cutoff with fast turn-on/turn-off transitions. Use Value: VCE(sat) ≤ 700 mV at IC/IB = 10 ensures minimal voltage drop and clean logic thresholds at 500 mA loads. |
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 |
|---|---|---|---|
| BC817-25,115 (Nexperia) | Same die, but in SOT23 package (3.0 × 1.4 × 1.1 mm); no side-wettable flanks; Ptot = 250 mW. | Lacks AEC-Q101 qualification and AOI support; suitable only for non-automotive, less space-constrained designs. | Select when cost or legacy footprint compatibility outweighs thermal performance and automotive compliance needs. |
| MMBT2222ALT1G (onsemi) | hFE = 100–300; VCEO = 40 V; SOT23 package; qualified to AEC-Q101 but not with side-wettable flanks. | Lower VCEO and narrower hFE range reduce margin in 12 V automotive switching; no AOI support. | Choose only if existing SOT23 layout reuse is mandatory and thermal/power requirements are relaxed. |
Compared with BC817-25,115 and MMBT2222ALT1G, the BC817-25QCH-Q uniquely combines AEC-Q101 qualification, side-wettable flanks for AOI, 0.5 mm height, and 575 mW power dissipation - making it the only option meeting full automotive production inspection and thermal density requirements in ultra-compact layouts.
Availability
BC817-25QCH-Q is available at Aetrix Electronics and suitable for automotive body electronics, LED driver modules, industrial sensor interfaces, and low-power logic-level translation requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for BC817-25QCH-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 focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
The BC817QCH-Q series belongs to Nexperia's AEC-Q101-qualified discrete transistor product line, engineered specifically for robust, space-efficient switching and amplification in automotive electronics and thermally demanding industrial control systems.
FAQ
What is the marking code for BC817-25QCH-Q?
The top-side marking for BC817-25QCH-Q is "8W", laser-etched on the package surface. This 2-character code identifies the specific hFE bin (160–400) and distinguishes it from BC817-16QCH-Q ("8V") and BC817-40QCH-Q ("8Y") within the same DFN1412D-3 family.
Does BC817-25QCH-Q require a thermal pad connection on the PCB?
No - the DFN1412D-3 package features an exposed thermal pad that is not electrically connected to any internal die structure. It must be soldered to a copper pour for thermal conduction but does not require electrical grounding or isolation; thermal relief patterns are not needed.
Can BC817-25QCH-Q replace BC817-25 in existing SOT23 designs?
No - BC817-25QCH-Q uses the DFN1412D-3 (SOT8009) footprint (1.4 × 1.2 mm), which is incompatible with the SOT23 pad layout (3.0 × 1.4 mm). Direct replacement requires PCB redesign, stencil revision, and reflow profile validation due to differences in thermal mass and wetting behavior.
What is the maximum allowable peak collector current for short pulses?
The absolute maximum peak collector current is 1 A for single pulses ≤ 1 ms at Tamb = 25 °C, as defined in Table 6 (Limiting Values). This rating assumes proper PCB thermal design (70 μm copper) and is not sustainable continuously - sustained operation must remain within the 500 mA DC limit.
BC817-25QCH-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC817QCH-Q
- 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:
- 455 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1412D-3
BC817-25QCH-QZ FAQ
1.How can I place an order for BC817-25QCH-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-25QCH-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 BC817-25QCH-QZ reliable?
The price and inventory of BC817-25QCH-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-25QCH-QZ is usually 5 days.
3.What payment methods are accepted for BC817-25QCH-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-25QCH-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-25QCH-QZ?
BC817-25QCH-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-25QCH-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 BC817-25QCH-QZ?
For technical support, including BC817-25QCH-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-25QCH-QZ requirements.
6.How does Aetrix verify that BC817-25QCH-QZ is sourced from the original manufacturer or authorized distributors?
All BC817-25QCH-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 BC817-25QCH-QZ meets industry standards.
7.What is the process for return or replacement of BC817-25QCH-QZ?
All BC817-25QCH-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC817-25QCH-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 BC817-25QCH-QZ part is unused and in its original packaging.
Return procedure for BC817-25QCH-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-25QCH-QZ Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
