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onsemi SZBZX84C47LT1G
- Part No.:
- SZBZX84C47LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C47LT1G.pdf
- Description:
- DIODE ZENER 47V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,880
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Product details
Overview
SZBZX84C47LT1G from onsemi is a 47 V ±6% Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 170 Ω dynamic impedance at 5 mA test current and 90 µA reverse leakage at 37.6 V. It provides precision voltage regulation in space-constrained portable electronics and high-density PCBs.
For engineers reviewing the SZBZX84C47LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±6%), thermal coefficient (+32.9 mV/°C), ESD rating (>16 kV HBM), and automotive-grade AEC-Q101 qualification.
Technical Context
This device operates as a two-terminal voltage reference using controlled reverse-biased avalanche breakdown. Its 47 V nominal Zener voltage is specified at IZT = 5 mA with ±6% tolerance, and exhibits a positive temperature coefficient of +32.9 mV/°C over −65°C to +150°C junction range.
The SOT-23 package features cathode-indicated polarity band, Pb-free construction, and UL 94 V-0 flammability rating. Pin configuration is fixed: Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode - confirmed per mechanical outline Style 8 and electrical characteristics table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 44–50 V at 5 mA test current; enables stable 47 V reference under typical bias conditions |
| Power Rating | 250 mW on FR-5 board; defines maximum continuous dissipation without derating below 25°C |
| Zener Impedance | 170 Ω at 5 mA; determines output voltage variation under load current changes |
| Reverse Leakage | 90 µA at 37.6 V; sets minimum operating voltage threshold before regulation onset |
| Temp Coefficient | +32.9 mV/°C at 5 mA; quantifies voltage drift across industrial temperature range |
| ESD Rating | Class 3 (>16 kV HBM); ensures robustness during automated PCB handling and assembly |
| Capacitance | 40 pF at 0 V, 1 MHz; impacts high-frequency noise filtering capability in bypass applications |
Pinout & Package
SOT-23 (TO-236) surface-mount package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting plastic case with corrosion-resistant finish. Cathode identified by polarity band. Maximum soldering temperature: 260°C for 10 seconds. UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential side of regulated circuit; reverse-biased during operation |
| Pin 2 | No Connection | Internally unconnected; must remain floating on PCB layout |
| Pin 3 | Cathode | Connected to higher-potential side; carries full Zener current and defines regulated output node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control units and infotainment power rails |
| Pb-Free & RoHS Compliant | Meets global environmental regulations; compatible with lead-free reflow soldering profiles |
| High ESD Robustness | Withstands >16 kV human-body-model discharge without parameter shift or failure |
| Optimized for High Density | SOT-23 footprint minimizes PCB area vs. larger packages like DO-35 or SOD-123 |
| Tight Thermal Stability | +32.9 mV/°C tempco enables predictable drift compensation in temperature-critical designs |
Applications
| Portable Power Management | Automotive Sensor Biasing |
|---|---|
|
Use Scenario: Voltage reference for Li-ion battery protection ICs in smartphones and wearables. IC Role / Device Role / Timing Role: Provides stable 47 V clamp to prevent overvoltage damage during fast-charge events. Use Value: 250 mW rating and 170 Ω impedance ensure reliable clamping without thermal runaway under transient surges. |
Use Scenario: Precision bias supply for analog front-end circuits in engine knock sensors. IC Role / Device Role / Timing Role: Delivers temperature-stable reference voltage to op-amp input stages. Use Value: +32.9 mV/°C tempco allows accurate compensation across −40°C to +125°C under-hood environments. |
| Industrial PLC Input Protection | Medical Instrument Reference |
|
Use Scenario: Overvoltage clamp on 24 V DC fieldbus inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Shunts surge energy above 47 V to ground, protecting downstream ADCs and isolators. Use Value: 90 µA leakage at 37.6 V ensures minimal loading on upstream current sources during normal operation. |
Use Scenario: Calibration reference in portable ECG monitor analog signal chains. IC Role / Device Role / Timing Role: Supplies stable excitation voltage to precision instrumentation amplifiers. Use Value: AEC-Q101 qualification and 40 pF capacitance support low-noise, low-drift performance required for sub-mV signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C47LT1G | Same Zener voltage (44–50 V), identical SOT-23 package, but lacks AEC-Q101 qualification and automotive traceability | Restricted to commercial-grade systems; not suitable for automotive OEM or Tier-1 production | Select when cost sensitivity outweighs automotive compliance requirements |
| SZBZX84C47LT3G | Identical electrical specs and qualification, but supplied in 10,000-unit tape-and-reel versus 3,000-unit for SZBZX84C47LT1G | Optimized for high-volume automated assembly; requires compatible pick-and-place feeders | Select for large-batch manufacturing where reel size aligns with production planning |
Compared with BZX84C47LT1G and SZBZX84C47LT3G, the SZBZX84C47LT1G uniquely combines AEC-Q101 qualification with 3,000-unit reel packaging-enabling automotive prototyping and low-to-mid volume production without overstocking or reel conversion overhead.
Availability
SZBZX84C47LT1G is available at Aetrix Electronics and suitable for portable power management, automotive sensor biasing, and industrial PLC input protection requiring stable component supply and automotive-grade reliability.
Supply support for SZBZX84C47LT1G 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
onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZBZX84CxxxLT1G series is part of onsemi's automotive-qualified Zener regulator portfolio, designed specifically for voltage reference and overvoltage protection in harsh-environment electronic control units.
FAQ
What is the Zener voltage tolerance of SZBZX84C47LT1G?
The SZBZX84C47LT1G has a nominal Zener voltage of 47 V with a tolerance of ±6%, meaning its actual breakdown voltage falls between 44 V and 50 V when tested at 5 mA. This tolerance is verified per onsemi's BZX84CxxxLT1G series datasheet revision 23 and applies across the full operating temperature range.
Is SZBZX84C47LT1G qualified for automotive use?
Yes, SZBZX84C47LT1G is AEC-Q101 qualified and PPAP capable, meeting stringent automotive reliability standards for temperature cycling, humidity resistance, and mechanical shock. The "SZ" prefix explicitly denotes automotive-grade traceability and process control, distinguishing it from commercial variants like BZX84C47LT1G.
What is the pin configuration of SZBZX84C47LT1G?
SZBZX84C47LT1G uses SOT-23 package Style 8: Pin 1 is Anode, Pin 2 is No Connection (must remain unconnected on PCB), and Pin 3 is Cathode (marked by polarity band). This configuration is confirmed in the mechanical outline diagram and electrical characteristics table of the official onsemi datasheet.
How does the temperature coefficient affect SZBZX84C47LT1G performance?
The SZBZX84C47LT1G exhibits a temperature coefficient of +32.9 mV/°C at 5 mA, meaning its Zener voltage increases by approximately 32.9 mV per degree Celsius rise in junction temperature. This positive drift is critical for thermal compensation design in automotive and industrial applications operating across wide ambient ranges.
What is the maximum power dissipation for SZBZX84C47LT1G on standard PCB material?
SZBZX84C47LT1G is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient, derating linearly by 2.0 mW/°C above that temperature. This rating assumes standard JEDEC-defined copper pad layout and defines the upper limit for continuous DC or pulsed power handling without exceeding junction temperature limits.
SZBZX84C47LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84CxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±6%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84C47LT1G FAQ
1.How can I place an order for SZBZX84C47LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C47LT1G 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 SZBZX84C47LT1G reliable?
The price and inventory of SZBZX84C47LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C47LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C47LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C47LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C47LT1G?
SZBZX84C47LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C47LT1G 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 SZBZX84C47LT1G?
For technical support, including SZBZX84C47LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C47LT1G requirements.
6.How does Aetrix verify that SZBZX84C47LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C47LT1G 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 SZBZX84C47LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C47LT1G?
All SZBZX84C47LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C47LT1G, 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 SZBZX84C47LT1G part is unused and in its original packaging.
Return procedure for SZBZX84C47LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C47LT1G Tags
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