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NXP Semiconductors BZX84-C47/LF1VL
- Part No.:
- BZX84-C47/LF1VL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C47/LF1VL.pdf
- Description:
- DIODE ZENER 47V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,396
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Product details
Overview
BZX84-C47/LF1VL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 47 V nominal breakdown voltage at IZ = 2 mA, 250 mW total power dissipation at Tamb ≤ 25 °C, and AEC-Q101 qualified for automotive use.
For engineers reviewing the BZX84-C47/LF1VL datasheet, BZX84-C47/LF1VL pinout, BZX84-C47/LF1VL application, or BZX84-C47/LF1VL equivalent, this page delivers verified electrical parameters, thermal behavior, SOT23 terminal mapping, automotive-grade reliability data, and direct alternative part comparisons for stable voltage reference design in constrained PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable reverse-biased conduction above its specified Zener voltage. Its 47 V nominal breakdown is defined under 2 mA test current with ±5 % tolerance, and exhibits 85 Ω typical differential resistance at that condition.
Thermal performance is characterized by 500 K/W junction-to-ambient thermal resistance in free air and 330 K/W junction-to-solder-point resistance on FR4 PCB. It supports non-repetitive peak reverse power dissipation up to 40 W for pulses ≤100 μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 47 V at IZ = 2 mA - defines primary regulation point for precision reference circuits |
| Tolerance | ±5 % - sets worst-case output voltage deviation in production designs |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - limits continuous DC power handling without derating |
| Differential Resistance (rdif) | 85 Ω typical at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | 50 μA max at VR = 37.6 V - specifies leakage level below regulation threshold |
| Non-repetitive Peak Reverse Power | 40 W for tp ≤ 100 μs - enables transient overvoltage clamping capability |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive electronic control units and infotainment systems |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 2.8 mm × 1.4 mm footprint, 1.1 mm height, standard 4 mm tape pitch reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential node in shunt regulation; reverse-biased during operation |
| 2 (n.c.) | Not connected | No internal bond; must remain unconnected on PCB to avoid parasitic coupling |
| 3 (Cathode) | Cathode connection | Connected to regulated voltage rail; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS modules |
| ±5 % voltage tolerance | Enables cost-optimized regulation where tight voltage accuracy is not required |
| 250 mW power rating | Supports low-power biasing, signal-level clamping, and reference generation in space-constrained designs |
| SOT23 package compatibility | Enables high-density placement and automated reflow assembly on standard PCB processes |
| Non-repetitive 40 W surge capability | Provides transient overvoltage protection for downstream ICs without external TVS devices |
Applications
| Automotive ECU Voltage Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 47 V reference for analog front-end circuitry in engine control units. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise bias point for op-amp comparators and ADC references. Use Value: Maintains regulation within ±5 % across temperature and lifetime, meeting AEC-Q101 automotive reliability requirements. |
Use Scenario: Clamping and biasing 4–20 mA transmitter outputs in industrial process sensors. IC Role / Device Role / Timing Role: Two-terminal Zener clamp limiting loop voltage excursions during fault conditions. Use Value: Absorbs up to 40 W transient surges without failure, protecting 24 V loop-powered instrumentation. |
| Consumer Power Supply Feedback | Telecom Line Interface Protection |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Precision Zener element in optocoupler feedback network setting output voltage accuracy. Use Value: 85 Ω differential resistance minimizes load regulation error, improving overall output stability. |
Use Scenario: Overvoltage protection on telephone line interface cards handling ring signal transients. IC Role / Device Role / Timing Role: Fast-acting shunt clamp responding to 100 μs surges on POTS lines. Use Value: 47 V breakdown aligns with telecom line voltage thresholds, preventing damage to SLIC and codec ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZX84-C47LT1G | Same 47 V ±5 % VZ, identical SOT23 package, but rated for 300 mW Ptot and -65 °C to +150 °C Tj range | Higher power margin supports longer-duration transients; wider junction temp range suits extended industrial environments | Select when higher continuous power headroom or extended temperature operation is required |
| Vishay BZX84-C47-TP | Same 47 V ±5 % VZ and SOT23 package, but AEC-Q101 not claimed; 250 mW rating confirmed, 50 μA IR max at VR = 37.6 V | Lacks automotive qualification; suitable for commercial/industrial applications where AEC compliance is not mandated | Select for cost-sensitive non-automotive designs requiring identical electrical behavior |
Compared with BZX84-C47/LF1VL, the STMicro part offers greater thermal robustness and power margin, while the Vishay part provides equivalent regulation performance without automotive qualification-enabling selection based on environmental and compliance requirements.
Availability
BZX84-C47/LF1VL is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, consumer power supply feedback networks, and telecom line protection circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for BZX84-C47/LF1VL 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The BZX84 series belongs to NXP's discrete voltage regulator portfolio, designed specifically for compact, reliable, and AEC-Q101-compliant shunt regulation in space- and cost-constrained applications.
FAQ
What is the nominal Zener voltage and test condition for BZX84-C47/LF1VL?
The BZX84-C47/LF1VL has a nominal Zener voltage of 47 V measured at a test current of 2 mA. This value falls within a ±5 % tolerance band, meaning the actual breakdown voltage ranges from 44.65 V to 49.35 V under those conditions. The device maintains this specification across its qualified operating temperature range and is validated per AEC-Q101 for automotive use. BZX84-C47/LF1VL is intended for shunt regulation applications where moderate voltage accuracy suffices.
Is BZX84-C47/LF1VL suitable for automotive applications?
Yes, BZX84-C47/LF1VL is AEC-Q101 qualified, confirming its reliability for automotive applications including engine control units, body electronics, and infotainment systems. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and high-temperature operating life. BZX84-C47/LF1VL operates across -65 °C to +150 °C junction temperature and supports non-repetitive 40 W surge events, making it appropriate for harsh vehicle environments.
What is the maximum continuous power dissipation for BZX84-C47/LF1VL?
BZX84-C47/LF1VL has a maximum total power dissipation of 250 mW at ambient temperatures ≤ 25 °C. Derating is required above that temperature, following the specified thermal resistance of 500 K/W junction-to-ambient. At 75 °C ambient, usable power drops to approximately 150 mW. BZX84-C47/LF1VL must be mounted on FR4 PCB with standard SOT23 footprint to achieve these ratings, as defined in the official NXP datasheet Rev. 6.
Does BZX84-C47/LF1VL have a connected third pin?
No, BZX84-C47/LF1VL uses a 3-pin SOT23 package where Pin 2 is internally not connected (n.c.). Only Pins 1 (anode) and 3 (cathode) are electrically active. Pin 2 must remain unconnected on the PCB layout to prevent unintended coupling or solder bridging. This configuration is consistent across the entire BZX84 series and is documented in NXP's official pinning table.
What is the differential resistance of BZX84-C47/LF1VL and why does it matter?
BZX84-C47/LF1VL has a typical differential resistance of 85 Ω at IZ = 2 mA. This parameter quantifies how much the Zener voltage changes with small variations in current-lower rdif yields better regulation stability under varying load conditions. In practical terms, a 1 mA change in Zener current causes ~85 mV shift in output voltage. BZX84-C47/LF1VL's rdif supports stable reference generation in low-noise analog circuits and feedback loops where tight voltage control is needed.
BZX84-C47/LF1VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- 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
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23 (TO-236AB)
BZX84-C47/LF1VL FAQ
1.How can I place an order for BZX84-C47/LF1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C47/LF1VL 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 BZX84-C47/LF1VL reliable?
The price and inventory of BZX84-C47/LF1VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C47/LF1VL is usually 5 days.
3.What payment methods are accepted for BZX84-C47/LF1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C47/LF1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C47/LF1VL?
BZX84-C47/LF1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C47/LF1VL 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 BZX84-C47/LF1VL?
For technical support, including BZX84-C47/LF1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C47/LF1VL requirements.
6.How does Aetrix verify that BZX84-C47/LF1VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C47/LF1VL 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 BZX84-C47/LF1VL meets industry standards.
7.What is the process for return or replacement of BZX84-C47/LF1VL?
All BZX84-C47/LF1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C47/LF1VL, 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 BZX84-C47/LF1VL part is unused and in its original packaging.
Return procedure for BZX84-C47/LF1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C47/LF1VL Tags
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