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Nexperia USA Inc. BC816-25HR
- Part No.:
- BC816-25HR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC816-25HR.pdf
- Description:
- TRANS NPN 80V 0.5A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:25,096
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Product details
Overview
BC816-25HR from Nexperia is an NPN general-purpose transistor in SOT23 (TO-236AB) package, rated for 80 V VCEO, 500 mA continuous collector current, and DC current gain (hFE) of 160–400 at VCE = 1 V, IC = 100 mA. It serves as a robust switching and amplification device in automotive board nets and industrial control interfaces.
For engineers reviewing the BC816-25HR datasheet, BC816-25HR pinout, BC816-25HR application, or BC816-25HR equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, and validated alternatives for 48 V system design, high-temperature PCB layout, and discrete BJT replacement selection.
Technical Context
This transistor operates as a silicon NPN bipolar junction device with a maximum collector-emitter breakdown voltage of 80 V and guaranteed operation up to 175 °C junction temperature. Its pulsed peak collector current reaches 1 A, and base-emitter saturation voltage remains ≤400 mV at IC = 500 mA and IB = 50 mA.
The BC816-25HR exhibits low capacitance-2 pF collector capacitance at VCB = 10 V-and transition frequency (fT) of 100 MHz at VCE = 5 V, IC = 50 mA. Thermal resistance from junction-to-ambient is 500 K/W on standard FR4 PCB, dropping to 363 K/W with a 1 cm² collector pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Withstands 48 V automotive supply transients without breakdown. |
| IC (continuous) | 500 mA - Supports medium-power switching loads like relays and LED drivers. |
| hFE | 160–400 - Enables stable biasing across production lots at 100 mA collector current. |
| VCE(sat) | ≤400 mV @ IC/IB = 10 - Ensures low conduction loss in saturated switch mode. |
| Tj(max) | 175 °C - Qualified for under-hood automotive and industrial environments. |
| Rth(j-a) | 500 K/W - Defines thermal margin on standard FR4 PCB without copper enhancement. |
| fT | 100 MHz - Supports high-speed digital switching up to ~10 MHz square-wave operation. |
Pinout & Package
SOT23 (TO-236AB) surface-mount plastic package with 3 leads, 1.3 mm profile, and standardized reflow footprint per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Controls conduction via forward-biased base-emitter junction; requires current-limited drive. |
| 2 | Emitter (E) | Common reference node for current return path; tied to ground or low-side return in most topologies. |
| 3 | Collector (C) | High-side output node; connects to load or power rail; handles full switched current. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage capability | 80 V VCEO rating enables direct use in 48 V board nets without external clamping. |
| High-current gain bin | hFE = 160–400 ensures consistent switching thresholds across temperature and process variation. |
| Extended temperature range | Rated for continuous operation from –55 °C to +175 °C junction temperature. |
| Low saturation voltage | VCE(sat) ≤ 400 mV reduces power dissipation during on-state in switching applications. |
| Standardized SOT23 footprint | Compatible with automated placement and reflow processes using JEDEC MS-012 land patterns. |
Applications
| Automotive Body Control Module | Industrial PLC Input Stage |
|---|---|
Use Scenario: Driving 12 V/24 V solenoids and indicator LEDs in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: NPN switch controlling load current with base-driven turn-on and passive pull-down turn-off. Use Value: 80 V rating absorbs load dump spikes; 175 °C operation survives under-dash ambient conditions. |
Use Scenario: Level-shifting and isolation of 24 V digital inputs into 3.3 V/5 V microcontroller GPIOs. IC Role / Device Role / Timing Role: Discrete interface transistor converting field-side signals to logic-compatible levels. Use Value: Low VCE(sat) minimizes input-stage voltage drop; hFE bin ensures reliable turn-on with limited base drive. |
| DC-DC Converter Bias Circuit | Power Supply Enable Switch |
Use Scenario: Providing base drive to primary-side power transistors in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Medium-speed amplifier stage delivering controlled current to gate/base drivers. Use Value: 100 MHz fT supports clean signal edge integrity at switching frequencies up to 10 MHz. |
Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby, 3.3 V core) via microcontroller GPIO. IC Role / Device Role / Timing Role: Low-side enable switch connecting regulator EN pin to ground. Use Value: Guaranteed hFE bin allows predictable base resistor sizing; SOT23 saves board space vs. larger packages. |
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 |
|---|---|---|---|
| BC816-16H | Lower hFE bin (100–250), identical VCEO, IC, and package. | Suitable where lower gain simplifies bias stability or reduces sensitivity to temperature drift. | Select when designing for worst-case β variation or when higher base drive is available. |
| MMBT3904LT1G | Lower VCEO (40 V), same SOT23 package, hFE = 100–300, Ptot = 310 mW. | Limited to ≤24 V systems; not suitable for 48 V automotive net or high-spike environments. | Choose only for cost-sensitive, low-voltage consumer applications with no transient exposure. |
Compared with BC816-25HR, BC816-16H offers tighter gain control at lower drive requirements, while MMBT3904LT1G trades voltage headroom and thermal margin for broader commercial availability-making BC816-25HR the optimal choice for ruggedized 48 V and high-temperature designs.
Availability
BC816-25HR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, DC-DC converter bias circuits, and power supply enable switches requiring stable component supply across extended temperature ranges.
Supply support for BC816-25HR 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices.
The BC816H series belongs to Nexperia's general-purpose bipolar transistor product line, engineered for robustness in automotive and industrial applications where voltage margin, thermal resilience, and consistent gain are critical.
FAQ
Is BC816-25HR qualified for automotive applications?
No-BC816-25HR is explicitly marked as non-automotive qualified per Nexperia's revision history. It lacks AEC-Q101 qualification and is not tested to automotive reliability standards. For automotive use, select the -Q qualified variant (e.g., BC816-25Q) or consult Nexperia's automotive portfolio.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 200 mA (single pulse, tp ≤ 1 ms). For continuous DC operation, base current must be sized to keep junction temperature ≤175 °C-typically limiting IB to ≤50 mA at ambient ≤85 °C with standard PCB layout, based on thermal resistance and power dissipation limits.
Can BC816-25HR replace BC846B in existing designs?
Only with circuit validation. BC846B has lower VCEO (65 V), different hFE range (200–450), and higher fT (300 MHz). While both are SOT23 NPN transistors, BC816-25HR's higher voltage rating improves surge tolerance but its lower fT may affect high-frequency switching performance.
Does BC816-25HR require a heatsink in 500 mA operation?
No dedicated heatsink is required, but thermal design is critical. At 500 mA and VCE(sat) = 400 mV, power dissipation is 200 mW. With Rth(j-a) = 500 K/W, junction temperature rise is ~100 K above ambient-so operation at 75 °C ambient reaches 175 °C Tj. Use enhanced copper pads or forced airflow if ambient exceeds 75 °C.
BC816-25HR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC816H
- 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):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 160 @ 100mA, 1V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC816-25HR FAQ
1.How can I place an order for BC816-25HR through Aetrix?
Please submit a Request for Quotation (RFQ) for BC816-25HR 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 BC816-25HR reliable?
The price and inventory of BC816-25HR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC816-25HR is usually 5 days.
3.What payment methods are accepted for BC816-25HR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC816-25HR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC816-25HR?
BC816-25HR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC816-25HR 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 BC816-25HR?
For technical support, including BC816-25HR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC816-25HR requirements.
6.How does Aetrix verify that BC816-25HR is sourced from the original manufacturer or authorized distributors?
All BC816-25HR 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 BC816-25HR meets industry standards.
7.What is the process for return or replacement of BC816-25HR?
All BC816-25HR units undergo pre-shipment inspection (PSI). If there is an issue with BC816-25HR, 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 BC816-25HR part is unused and in its original packaging.
Return procedure for BC816-25HR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC816-25HR Tags
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