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Nexperia USA Inc. BC817-25QBH-QZ
- Part No.:
- BC817-25QBH-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC817-25QBH-QZ.pdf
- Description:
- TRANS NPN 45V 0.5A DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:24,602
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Product details
Overview
BC817-25QBH-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a DFN1110D-3 (SOT8015) leadless package, rated for 45 V VCEO, 500 mA IC, and 160–400 hFE at VCE = 1 V / IC = 100 mA, used for space-constrained switching and amplification in automotive body control modules.
For engineers reviewing the BC817-25QBH-Q datasheet, BC817-25QBH-Q pinout, BC817-25QBH-Q application, or BC817-25QBH-Q equivalent, this page delivers verified electrical specs, thermal derating behavior, side-wettable flank solder joint compatibility, and automotive-grade reliability context - all confirmed against Nexperia's Rev. 1 (25 Jan 2022) product data sheet.
Technical Context
This device operates as a silicon NPN bipolar junction transistor with base-controlled current amplification. Its DC current gain (hFE) ranges from 160 to 400 under pulsed conditions (tp ≤ 300 μs, δ ≤ 0.02) at VCE = 1 V and IC = 100 mA, and drops to ≥40 at IC = 500 mA, supporting robust saturation switching.
Thermal performance is defined by two mounting configurations: Rth(j-a) = 358 K/W on 35 μm FR4 PCB and 272 K/W on 70 μm FR4 PCB. Junction temperature is rated up to 175 °C, enabling operation in under-hood automotive environments without derating below ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in 12 V/24 V automotive supply rails. |
| IC | 500 mA continuous - Sustained collector current capability; supports driving small relays, LEDs, or logic-level MOSFET gates. |
| hFE | 160–400 - Current gain range at VCE = 1 V, IC = 100 mA; enables predictable base drive sizing for low-power switching. |
| VCE(sat) | ≤ 700 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss and self-heating during on-state operation. |
| Tj max | 175 °C - Maximum junction temperature; allows uninterrupted operation in high-ambient under-hood locations without thermal shutdown. |
| Ptot | 550 mW on 70 μm FR4 PCB - Total power dissipation limit; sets maximum allowable I²R + VCEIC loss under standard board layout. |
| Cc | 3 pF - Collector capacitance at VCB = 10 V; contributes to switching speed and high-frequency response limitations. |
Pinout & Package
DFN1110D-3 (SOT8015) is a 3-terminal, leadless, ultra-thin surface-mount package measuring 1.1 × 1.0 × 0.5 mm with side-wettable flanks for automated optical inspection (AOI) of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ~50 mA base drive for full 500 mA collector conduction at low VCE(sat). |
| 2 | Emitter (E) | Reference terminal for biasing; internally connected to exposed thermal pad in DFN package for enhanced heat transfer. |
| 3 | Collector (C) | High-current output node; electrically and thermally coupled to package backside for efficient power handling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and lighting modules per stress test requirements. |
| Side-wettable flanks | Enables reliable AOI-based solder joint inspection on reflow-assembled PCBs without X-ray. |
| 175 °C junction rating | Supports continuous operation in high-temp zones (e.g., near power converters or exhaust systems) without derating. |
| 0.5 mm package height | Reduces profile in slim consumer electronics and multi-layer automotive ECUs where Z-axis space is constrained. |
| Three hFE variants | BC817-16QBH-Q (100–250), BC817-25QBH-Q (160–400), BC817-40QBH-Q (250–600) enable precise gain matching across designs. |
Applications
| Automotive Body Control Unit | LED Driver Circuit |
|---|---|
|
Use Scenario: Switching 12 V dome lights and door lock actuators in BCM modules. IC Role / Device Role / Timing Role: NPN switch controlling load current path between battery rail and ground. Use Value: 45 V VCEO withstands load dump transients; 175 °C Tj ensures reliability near HVAC electronics. |
Use Scenario: Constant-current LED backlighting for instrument clusters. IC Role / Device Role / Timing Role: Linear current regulator using emitter-follower configuration with feedback resistor. Use Value: Tight hFE tolerance (160–400) enables stable current setting; low VCE(sat) reduces thermal load on PCB. |
| Industrial Sensor Interface | Low-Power Logic-Level Translator |
|
Use Scenario: Amplifying weak analog signals from NTC temperature sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with fixed bias network. Use Value: 100 MHz fT supports bandwidth up to ~10 kHz signal conditioning; low Cc prevents phase shift. |
Use Scenario: Level-shifting 3.3 V microcontroller GPIO to drive 5 V peripheral enable lines. IC Role / Device Role / Timing Role: Saturated switch translating logic HIGH/LOW states with minimal propagation delay. Use Value: Fast turn-on/off due to low Cc and optimized doping; 700 mV VCE(sat) ensures clean LOW-level output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BW,115 | Smaller SOT323 package (1.3 × 1.75 × 0.95 mm); lower IC (100 mA); hFE 110–800 at IC = 10 mA. | Not AEC-Q101 qualified; unsuitable for automotive; limited to consumer/portable devices. | Select only for non-automotive, low-current signal switching where footprint and gain spread matter more than reliability. |
| MMBT3904LT1G | SOT23 package; same 40 V VCEO, but higher IC (200 mA continuous); hFE 100–300 at IC = 10 mA. | Lacks side-wettable flanks; not optimized for AOI; no AEC-Q101 certification. | Prefer for cost-sensitive industrial controls where solder joint inspection is manual or unnecessary. |
Compared with BC817-25QBH-Q, BC847BW offers wider hFE spread but lacks automotive qualification and thermal robustness, while MMBT3904LT1G provides legacy compatibility but inferior AOI support and junction temperature margin.
Availability
BC817-25QBH-Q is available at Aetrix Electronics and suitable for automotive body control units, LED driver circuits, and industrial sensor interfaces requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for BC817-25QBH-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BC817QBH-Q series targets space-constrained, thermally demanding automotive and industrial applications requiring robust NPN switching with AOI-compatible packaging and extended temperature operation.
FAQ
What is the maximum allowable ambient temperature for continuous operation?
The BC817-25QBH-Q supports ambient temperatures from –55 °C to +175 °C, but continuous operation depends on power dissipation and PCB thermal design. At 550 mW total power on a 70 μm FR4 board, ambient must stay ≤125 °C to maintain Tj ≤175 °C per thermal resistance of 272 K/W.
Does the DFN1110D-3 package require special stencil or reflow profiles?
Yes - the recommended stencil thickness is 0.1 mm, with solder paste aperture dimensions of 0.34 × 0.34 mm and land pattern per Figure 17. Reflow must follow JEDEC J-STD-020 moisture sensitivity level (MSL) 1 profile, with peak temperature ≤260 °C and time above liquidus 60–90 seconds.
How does hFE vary with temperature and collector current?
At IC = 100 mA and VCE = 1 V, hFE decreases from ~400 at –55 °C to ~160 at +150 °C. At IC = 500 mA, minimum hFE drops to 40 regardless of temperature, confirming usable gain even under high-current saturation conditions.
Can BC817-25QBH-Q replace BC817-16QBH-Q in existing designs?
Yes, with design verification: both share identical package, pinout, and absolute maximum ratings, but BC817-25QBH-Q has higher minimum hFE (160 vs. 100). Base resistor values may need reduction to avoid overdrive, and thermal validation is required if operating near Ptot limits due to higher gain-induced base current sensitivity.
BC817-25QBH-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC817QBH-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:
- 420 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1110D-3
BC817-25QBH-QZ FAQ
1.How can I place an order for BC817-25QBH-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-25QBH-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 BC817-25QBH-QZ reliable?
The price and inventory of BC817-25QBH-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-25QBH-QZ is usually 5 days.
3.What payment methods are accepted for BC817-25QBH-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-25QBH-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-25QBH-QZ?
BC817-25QBH-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-25QBH-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 BC817-25QBH-QZ?
For technical support, including BC817-25QBH-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-25QBH-QZ requirements.
6.How does Aetrix verify that BC817-25QBH-QZ is sourced from the original manufacturer or authorized distributors?
All BC817-25QBH-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 BC817-25QBH-QZ meets industry standards.
7.What is the process for return or replacement of BC817-25QBH-QZ?
All BC817-25QBH-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC817-25QBH-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 BC817-25QBH-QZ part is unused and in its original packaging.
Return procedure for BC817-25QBH-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-25QBH-QZ Tags
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MMBT3906LT1G
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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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
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
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