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Nexperia USA Inc. BC817-16W,135
- Part No.:
- BC817-16W,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC817-16W,135.pdf
- Description:
- TRANS NPN 45V 0.5A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:9,845
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Product details
Overview
BC817-16W,135 from Nexperia is a 45 V, 500 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and linear amplification with hFE of 100–250 at IC = 100 mA and VCE = 1 V; used in power management stages of consumer IoT sensor nodes and LED driver bias circuits.
For engineers reviewing the BC817-16W,135 datasheet, BC817-16W,135 pinout, BC817-16W,135 application, or BC817-16W,135 equivalent, key selection criteria include guaranteed DC current gain range, thermal resistance under FR4 PCB mounting, VCE(sat) at IC = 500 mA, and SC-70 footprint compatibility with high-density PCB layouts.
Technical Context
This NPN bipolar junction transistor operates in active and saturation regions with defined breakdown limits: VCEO = 45 V, VCBO = 50 V, and VEBO = 5 V. Its pulsed operation supports ICM = 1 A for tp ≤ 1 ms, enabling short-duration load switching without thermal runaway.
The device exhibits fT = 100 MHz at VCE = 5 V, IC = 10 mA, confirming suitability for low-frequency signal amplification and digital logic interfacing up to ~10 MHz. Cc = 3 pF ensures minimal capacitive loading in input-stage coupling networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before avalanche conduction; sets upper rail limit for 3.3 V/5 V/12 V supply switching stages. |
| IC | 500 mA continuous - Sustained collector current rating at Tamb = 25 °C; defines maximum steady-state load drive capability. |
| hFE | 100–250 at VCE = 1 V, IC = 100 mA - Confirmed DC current gain range for predictable base drive sizing in switch-mode applications. |
| VCE(sat) | ≤ 700 mV at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss (≤ 350 mW) in on-state switching. |
| Rth(j-a) | 625 K/W on standard FR4 PCB - Thermal resistance determines junction temperature rise (ΔTj ≈ 175 °C at full IC) without heatsinking. |
| fT | 100 MHz - Transition frequency confirms usable bandwidth for audio preamplifiers and digital signal buffering below 10 MHz. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads; dimensions: 2.2 mm × 1.35 mm × 0.95 mm (L × W × H); 1.3 mm lead pitch; tin-plated copper leads compatible with lead-free reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ≥50 mA base drive for full 500 mA collector conduction in saturation. |
| 2 | Emitter (E) | Reference terminal for bias network; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | High-current output node; electrically isolated from PCB ground plane in SOT323 layout to manage thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE selections | BC817-16W offers 100–250 gain bracket-enables precise base resistor selection for consistent turn-on across production batches. |
| Low VCE(sat) | ≤700 mV at rated IC/IB reduces conduction loss by >40% vs. legacy BC817 in 5 V logic-level switching. |
| SC-70 footprint | 0.95 mm profile and 2.2 mm length enable placement in space-constrained modules such as wearable sensor PCBs. |
| Thermal derating curve | Ptot drops linearly from 290 mW at 25 °C to 0 mW at 150 °C ambient-supports thermal-aware design in sealed enclosures. |
Applications
| LED Driver Bias Control | Microcontroller GPIO Level Shifting |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU outputs with current limiting via base resistor. IC Role / Device Role / Timing Role: NPN switch operating in saturation to sink LED current while isolating MCU pin from load transients. Use Value: VCE(sat) ≤ 700 mV ensures ≥2.6 V forward drop across LED at 20 mA, maintaining brightness consistency across temperature. |
Use Scenario: Translating 1.8 V logic-high signals to 5 V rail for legacy peripherals using open-collector configuration. IC Role / Device Role / Timing Role: Active-low level shifter with emitter-follower topology for bidirectional signal translation. Use Value: hFE ≥ 100 guarantees reliable turn-on with <10 µA base current, minimizing MCU port loading. |
| Low-Voltage Power Sequencing | Audio Preamp Stage |
Use Scenario: Enabling 3.3 V subsystems only after main 5 V rail stabilizes, using RC-delayed base drive. IC Role / Device Role / Timing Role: Voltage-controlled enable switch with built-in hysteresis via base resistor network. Use Value: VCEO = 45 V provides 9× margin over 5 V rail, eliminating need for external clamping diodes. |
Use Scenario: Amplifying microphone signals in portable voice recorders with single-supply 3.3 V operation. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased at IC = 1 mA for optimal noise figure. Use Value: fT = 100 MHz supports flat gain response up to 20 kHz, covering full audio band without roll-off. |
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 |
|---|---|---|---|
| BC847BW,115 | Lower VCEO = 45 V (same), but hFE = 200–450 and higher fT = 150 MHz; Ptot = 250 mW. | Better suited for RF-coupled preamps; less margin for high-IC switching due to lower power rating. | Select when bandwidth >50 MHz required and IC ≤ 100 mA; avoid for 500 mA loads. |
| MMBT3904LT1G | VCEO = 40 V, hFE = 100–300, VCE(sat) = 300 mV @ IC = 10 mA - not rated for 500 mA continuous. | Optimized for low-current signal switching; insufficient thermal capacity for sustained 500 mA operation. | Use only in <50 mA applications; BC817-16W preferred where IC > 100 mA or Ptot > 150 mW required. |
Compared with BC847BW,115 and MMBT3904LT1G, the BC817-16W delivers superior thermal robustness at 500 mA and tighter hFE control for deterministic base drive, making it the preferred choice for industrial power sequencing and LED array drivers where reliability under sustained load matters.
Availability
BC817-16W,135 is available at Aetrix Electronics and suitable for LED driver bias control, microcontroller GPIO level shifting, and low-voltage power sequencing requiring stable component supply across high-mix manufacturing programs.
Supply support for BC817-16W,135 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 for automotive, industrial, mobile, and computing markets, delivering high-volume, high-reliability discrete and logic devices.
The BC817W series belongs to Nexperia's general-purpose transistor product line, engineered for cost-sensitive, space-constrained applications demanding predictable gain, low saturation voltage, and robust thermal performance in SOT323 packaging.
FAQ
What is the maximum continuous collector current for BC817-16W,135 at 70 °C ambient?
At Tamb = 70 °C, the device's total power dissipation derates to approximately 210 mW based on its 625 K/W Rth(j-a) on standard FR4. With VCE(sat) ≤ 700 mV, this supports IC ≤ 300 mA continuously without exceeding Tj = 150 °C. Full 500 mA operation requires ambient ≤ 45 °C or enhanced PCB copper area.
Does BC817-16W,135 support lead-free reflow soldering?
Yes-BC817-16W,135 is qualified for lead-free reflow per J-STD-020, with peak temperature tolerance up to 260 °C for 10 seconds. The SOT323 package uses tin-plated copper leads and complies with IPC/JEDEC standards for thermal cycling reliability during assembly.
How does the hFE range of BC817-16W compare to BC817-40W?
BC817-16W specifies hFE = 100–250 at VCE = 1 V and IC = 100 mA, while BC817-40W offers 250–600 in the same conditions. This allows designers to select BC817-16W when moderate, tightly bounded gain suffices-reducing base drive variability and simplifying bias network design.
Can BC817-16W,135 replace BC817-25W in existing designs?
Yes, with verification of gain-dependent circuit behavior: BC817-16W has lower hFE (100–250 vs. 160–400), so base resistors may require reduction by ~20% to maintain identical IC. Saturation voltage, breakdown ratings, and package are identical-no layout changes needed.
BC817-16W,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 100 @ 100mA, 1V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC817-16W,135 FAQ
1.How can I place an order for BC817-16W,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC817-16W,135 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 BC817-16W,135 reliable?
The price and inventory of BC817-16W,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC817-16W,135 is usually 5 days.
3.What payment methods are accepted for BC817-16W,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC817-16W,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC817-16W,135?
BC817-16W,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC817-16W,135 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 BC817-16W,135?
For technical support, including BC817-16W,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC817-16W,135 requirements.
6.How does Aetrix verify that BC817-16W,135 is sourced from the original manufacturer or authorized distributors?
All BC817-16W,135 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 BC817-16W,135 meets industry standards.
7.What is the process for return or replacement of BC817-16W,135?
All BC817-16W,135 units undergo pre-shipment inspection (PSI). If there is an issue with BC817-16W,135, 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 BC817-16W,135 part is unused and in its original packaging.
Return procedure for BC817-16W,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC817-16W,135 Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
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
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
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