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Nexperia USA Inc. BC806-25HR
- Part No.:
- BC806-25HR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC806-25HR.pdf
- Description:
- TRANS PNP 80V 0.5A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:21,386
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Product details
Overview
BC806-25HR from Nexperia is a PNP general-purpose bipolar junction transistor (BJT) in SOT23 package, rated for −80 V VCEO, −500 mA IC, and DC current gain (hFE) of 160–400 at VCE = −1 V and IC = −100 mA. It operates reliably up to 175 °C junction temperature and serves as a robust switching or amplification device in 48 V automotive board nets and industrial power control circuits.
For engineers reviewing the BC806-25HR datasheet, BC806-25HR pinout, BC806-25HR application, or BC806-25HR equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, and validated alternative transistors for high-voltage PNP switching designs requiring stable hFE across temperature.
Technical Context
This PNP BJT features a silicon planar epitaxial structure optimized for high-voltage blocking (−80 V VCEO/VCBO) and moderate-current switching (−500 mA continuous, −1 A pulsed). Its hFE range of 160–400 supports consistent base drive design across production lots without trimming.
Thermal performance is defined by Rth(j-a) = 500 K/W on standard FR4 PCB and 363 K/W with 1 cm² collector pad - enabling predictable junction temperature rise under sustained load in compact layouts. The device sustains operation from −55 °C to +175 °C ambient, with VBE and VCE(sat) characterized across that full range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −80 V: Maximum safe collector-emitter voltage with open base; enables use in 48 V systems with ≥1.7× safety margin. |
| IC | −500 mA: Continuous DC collector current at 25 °C; supports medium-power load switching without forced cooling. |
| hFE | 160–400 at VCE = −1 V, IC = −100 mA: Tight DC gain spread ensures predictable base resistor selection for saturation switching. |
| VCE(sat) | ≤ −400 mV at IC = −500 mA, IB = −50 mA: Low saturation voltage minimizes conduction loss in high-side switch configurations. |
| Tj(max) | +175 °C: Maximum junction temperature rating allows deployment in under-hood automotive or high-temperature industrial enclosures. |
| fT | 80 MHz at VCE = −5 V, IC = −50 mA: Supports switching frequencies up to ~10 MHz with adequate gain margin for analog amplification. |
| Cc | 5 pF at VCB = −10 V: Low collector capacitance reduces Miller effect, improving turn-off speed in switching applications. |
Pinout & Package
SOT23 plastic surface-mounted package (TO-236AB), 3-lead, small outline footprint (2.8 × 1.4 × 1.1 mm) with tin-plated terminations compatible with standard reflow and wave soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control electrode; requires negative bias relative to emitter to forward-bias base-emitter junction and enable conduction. |
| 2 | Emitter (E) | Current source terminal in PNP configuration; connected to higher potential rail in high-side switch implementations. |
| 3 | Collector (C) | Current sink terminal; carries load current to ground or lower-potential node when transistor is saturated. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage capability | −80 V VCEO/VCBO enables direct interface with 48 V battery systems without external clamping. |
| High-temperature operation | Rated for continuous operation up to +175 °C junction temperature, supporting under-hood and industrial motor-control environments. |
| Two hFE grades | BC806-25H offers 160–400 hFE, providing tighter gain control than BC806-16H (100–250) for precision biasing. |
| Low VCE(sat) | ≤ −400 mV at IC = −500 mA ensures <100 mW conduction loss per device, reducing thermal load in dense PCB layouts. |
| Standard SOT23 footprint | Compatible with automated placement and reflow processes; matches JEDEC TO-236AB mechanical standard for supply chain flexibility. |
Applications
| Automotive 48 V Board Net Switching | Industrial Relay Driver |
|---|---|
Use Scenario: Controlling solenoid valves and LED arrays in 48 V mild-hybrid vehicle subsystems. IC Role / Device Role / Timing Role: High-side PNP switch turning on loads referenced to battery positive rail. Use Value: −80 V rating provides headroom against load-dump transients; 175 °C rating survives under-hood thermal cycling. |
Use Scenario: Driving electromagnetic relays in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Interface transistor translating microcontroller GPIO signals to relay coil current. Use Value: 500 mA IC supports typical 20–400 mW relay coils; low VCE(sat) limits self-heating during extended duty cycles. |
| DC-DC Converter Bias Circuit | Overvoltage Protection Clamp |
Use Scenario: Providing base current to main power transistors in isolated flyback or forward converter feedback loops. IC Role / Device Role / Timing Role: Small-signal PNP amplifier stage in optocoupler-coupled error amplifier path. Use Value: 80 MHz fT ensures stability in kHz-range regulation bandwidths; tight hFE improves loop gain consistency. |
Use Scenario: Acting as crowbar element in overvoltage shutdown circuitry for industrial power supplies. IC Role / Device Role / Timing Role: Fast-turn-on PNP switch triggering SCR latch upon sensed overvoltage condition. Use Value: ≤300 μs pulse response time (per pulsed test conditions) enables sub-millisecond fault reaction; −8 V VEBO withstands transient coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC807-25 | Same SOT23 package, NPN polarity, identical hFE (160–400), but +80 V VCEO; complementary to BC806-25H in push-pull stages. | Requires inverted control logic and reversed supply referencing; unsuitable for high-side switching where emitter must connect to VCC. | Select when building complementary pair amplifiers or low-side switches where NPN topology aligns with system grounding. |
| MMBT3906 | Same PNP polarity, SOT23 package, but lower −40 V VCEO, −200 mA IC, and 100–300 hFE; legacy part with wider gain tolerance. | Not suitable for 48 V systems due to insufficient voltage margin; limited to ≤24 V logic-level interfaces. | Choose only for cost-sensitive, low-voltage (<30 V), low-current (<200 mA) signal switching where BC806-25HR's voltage/current headroom is unnecessary. |
Compared with BC806-25HR, BC807-25 offers functional complementarity in dual-rail designs but cannot replace it in high-side 48 V roles, while MMBT3906 lacks both voltage and current capability for automotive or industrial switching - making BC806-25HR the only option meeting −80 V/−500 mA/175 °C requirements in SOT23.
Availability
BC806-25HR is available at Aetrix Electronics and suitable for automotive 48 V board net switching, industrial relay drivers, DC-DC converter bias circuits, and overvoltage protection clamps requiring stable component supply across extended temperature ranges.
Supply support for BC806-25HR 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 for automotive, industrial, and consumer markets.
The BC806H series belongs to Nexperia's general-purpose transistor product line, engineered specifically for robust, cost-effective switching and amplification in harsh-environment applications demanding extended temperature operation and high-voltage tolerance.
FAQ
Is BC806-25HR automotive-qualified?
No. Per Nexperia's revision history (Rev. 2, 30 September 2025), BC806H_SER explicitly states "Product(s) changed to non-automotive qualification." It is not AEC-Q101 qualified and lacks automotive-grade testing or guaranteed PPAP documentation. For automotive use, consult Nexperia's -Q qualified alternatives such as BC806-25Q.
What is the maximum allowable power dissipation at 100 °C ambient?
At Tamb = 100 °C, derated power dissipation is approximately 200 mW. Using the linear derating curve from Figure 1 (500 K/W on standard FR4), Ptot = 300 mW − [(100 − 25) × 0.3] ≈ 200 mW. This assumes no additional heatsinking and accounts for junction-to-ambient thermal resistance under standard mounting conditions.
Can BC806-25HR replace BC806-16H in existing designs?
Yes, with design verification. BC806-25H has higher minimum hFE (160 vs. 100), resulting in lower required base drive current for equivalent collector current. This may improve saturation depth but could affect timing in edge-sensitive circuits. Confirm VCE(sat) and switching speed meet original spec under actual operating conditions.
What marking code identifies BC806-25HR on the package?
The top-side marking is "QP%", where "%" is a placeholder for the manufacturing site code. This distinguishes it from BC806-16H ("QN%") and confirms the 160–400 hFE grade. Marking is laser-etched on the SOT23 body per Table 5 of the datasheet.
BC806-25HR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- 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:
- 80MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC806-25HR FAQ
1.How can I place an order for BC806-25HR through Aetrix?
Please submit a Request for Quotation (RFQ) for BC806-25HR 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 BC806-25HR reliable?
The price and inventory of BC806-25HR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC806-25HR is usually 5 days.
3.What payment methods are accepted for BC806-25HR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC806-25HR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC806-25HR?
BC806-25HR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC806-25HR 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 BC806-25HR?
For technical support, including BC806-25HR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC806-25HR requirements.
6.How does Aetrix verify that BC806-25HR is sourced from the original manufacturer or authorized distributors?
All BC806-25HR 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 BC806-25HR meets industry standards.
7.What is the process for return or replacement of BC806-25HR?
All BC806-25HR units undergo pre-shipment inspection (PSI). If there is an issue with BC806-25HR, 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 BC806-25HR part is unused and in its original packaging.
Return procedure for BC806-25HR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC806-25HR Tags
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