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NXP Semiconductors BZX84-C4V7/LF1VL
- Part No.:
- BZX84-C4V7/LF1VL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C4V7/LF1VL.pdf
- Description:
- DIODE ZENER 4.7V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,754
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Product details
Overview
BZX84-C4V7/LF1VL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 4.7 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualified for automotive use. It provides stable reference voltage in low-power supply regulation and overvoltage protection circuits.
For engineers reviewing the BZX84-C4V7/LF1VL datasheet, BZX84-C4V7/LF1VL pinout, BZX84-C4V7/LF1VL application, or BZX84-C4V7/LF1VL equivalent, key selection factors include its 4.4–5.0 V Zener voltage range, 50 Ω typical differential resistance at 5 mA, −1.4 to +0.2 mV/K temperature coefficient, 300 pF capacitance at 0 V, and non-repetitive peak reverse current of 6.0 A.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable reverse-biased breakdown voltage across its cathode-anode terminals under controlled current conditions. Its Zener mechanism delivers predictable clamping behavior with defined thermal drift and dynamic impedance characteristics.
Designed for surface-mount implementation on FR4 PCBs with standard SOT23 footprint, it supports pulse operation up to 40 W (100 µs, duty cycle ≤ 0.02) and continuous operation up to 250 mW at ambient ≤ 25 °C. Junction temperature range spans −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.4 V to 5.0 V at IZ = 5 mA - defines usable regulation window under nominal test current |
| Differential Resistance (rdif) | 425 Ω max at IZ = 5 mA - determines output voltage variation under load current changes |
| Reverse Current (IR) | 3 µA max at VR = 3.0 V - specifies leakage level below breakdown, critical for low-power standby circuits |
| Temperature Coefficient (SZ) | −1.4 to +0.2 mV/K - quantifies voltage drift per degree Celsius, enabling thermal error budgeting |
| Diode Capacitance (Cd) | 300 pF max at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering and transient response |
| Non-repetitive Peak Reverse Current (IZSM) | 6.0 A at tp = 100 µs - defines surge handling capability for ESD or transient suppression |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum steady-state power envelope on standard PCB layout |
Pinout & Package
Package: SOT23 (TO-236AB), plastic surface-mounted package with 3 leads; dimensions 2.9 × 1.3 × 1.0 mm (L × W × H), standard footprint per Fig 9/10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection; must remain unconnected on PCB |
| 3 | Cathode (K) | Reverse-bias terminal; connected to regulated voltage rail and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical stress testing |
| ±5 % Zener voltage tolerance | Cost-optimized precision for non-critical reference applications without requiring tight calibration |
| SOT23 surface-mount package | Enables high-density PCB layouts and compatibility with automated reflow/wave soldering processes |
| Low forward voltage (≤ 0.9 V) | Minimizes conduction loss during forward bias, supporting dual-role use in polarity protection circuits |
| 150 °C junction temperature rating | Supports operation in under-hood and industrial environments without derating at full power |
Applications
| Automotive Body Control Module (BCM) Voltage Clamp | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 5 V microcontroller I/O lines against load-dump transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage protection by diverting surge current to ground when input exceeds 4.7 V. Use Value: Prevents latch-up or damage to downstream logic using only passive components and no active control circuitry. |
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source establishing fixed bias point for Wheatstone bridge operation. Use Value: Enables <1 % full-scale measurement accuracy despite supply rail variations up to ±10 %. |
| Consumer USB Port Overvoltage Protection | Medical Wearable Battery Monitoring |
Use Scenario: Safeguarding USB data lines from ESD events and adapter overvoltage in portable chargers. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing fast-rising spikes before they reach USB PHY ICs. Use Value: Meets IEC 61000-4-2 Level 4 (15 kV air, 8 kV contact) with sub-100 ns response time and no signal distortion. |
Use Scenario: Providing stable reference for ADC measurement of lithium-ion cell voltage in compact health monitors. IC Role / Device Role / Timing Role: Low-leakage Zener element generating accurate 4.7 V reference for 12-bit SAR ADC conversion. Use Value: Achieves ±3 mV absolute voltage accuracy over 0–40 °C, enabling <0.1 % SOC estimation resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ4685T1G | 4.7 V nominal, ±5 %, 350 mW Ptot, 500 Ω rdif max - higher power but looser impedance control | Preferred where higher surge margin is needed; less suitable for precision analog references | Select when board space allows larger thermal pad or when >250 mW continuous dissipation is required |
| Vishay BZX84-C4V7-TP | Identical 4.7 V ±5 % spec, same SOT23 package, but not AEC-Q101 qualified - lacks automotive stress validation | Acceptable for commercial-grade consumer electronics; excluded from automotive Tier-1 BOMs | Choose for cost-sensitive non-automotive designs where qualification documentation is not mandated |
Compared with BZX84-C4V7/LF1VL, MMBZ4685T1G offers greater power headroom at the expense of tighter regulation, while BZX84-C4V7-TP matches electrical specs but omits automotive qualification-making the NXP part uniquely suited for safety-critical vehicular subsystems requiring validated reliability.
Availability
BZX84-C4V7/LF1VL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical wearable power management requiring stable component supply and long-term lifecycle support.
Supply support for BZX84-C4V7/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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive electronics and functional safety.
The BZX84 series belongs to NXP's portfolio of discrete voltage regulation devices designed specifically for cost-effective, high-reliability shunt regulation in space-constrained SMT applications across automotive and industrial markets.
FAQ
What is the Zener voltage tolerance of BZX84-C4V7/LF1VL?
The BZX84-C4V7/LF1VL has a nominal Zener voltage of 4.7 V with an approximate ±5 % tolerance, meaning its actual breakdown voltage falls between 4.4 V and 5.0 V when tested at 5 mA. This tolerance band is explicitly designated by the "C" suffix in the BZX84 series nomenclature and confirmed in Table 8 of the NXP datasheet Rev. 6.
Is BZX84-C4V7/LF1VL qualified for automotive use?
Yes, BZX84-C4V7/LF1VL is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, having passed stress tests for temperature cycling, humidity, and mechanical robustness required for automotive discrete semiconductors. This makes it suitable for under-hood and cabin electronics where reliability under harsh environmental conditions is mandatory.
What is the maximum non-repetitive peak reverse current for BZX84-C4V7/LF1VL?
The BZX84-C4V7/LF1VL supports a non-repetitive peak reverse current (IZSM) of 6.0 A under conditions of tp = 100 µs and duty cycle ≤ 0.02, as specified in Table 5 (Limiting Values) and Table 8 (Characteristics). This rating enables effective transient suppression in ESD and load-dump scenarios.
How does the temperature coefficient affect BZX84-C4V7/LF1VL performance?
The temperature coefficient (SZ) of BZX84-C4V7/LF1VL ranges from −1.4 mV/K to +0.2 mV/K, indicating that its Zener voltage may decrease or slightly increase with rising junction temperature. This behavior is critical for applications requiring stable reference voltage across operating temperature ranges, such as sensor excitation or ADC references.
What is the forward voltage of BZX84-C4V7/LF1VL at 10 mA?
The forward voltage (VF) of BZX84-C4V7/LF1VL is guaranteed ≤ 0.9 V at IF = 10 mA, per Table 1 (Quick Reference Data) and Table 7 (Characteristics). This low forward drop supports efficient use in polarity protection or dual-function clamp circuits where forward conduction occurs during fault conditions.
BZX84-C4V7/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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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-C4V7/LF1VL FAQ
1.How can I place an order for BZX84-C4V7/LF1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C4V7/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-C4V7/LF1VL reliable?
The price and inventory of BZX84-C4V7/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-C4V7/LF1VL is usually 5 days.
3.What payment methods are accepted for BZX84-C4V7/LF1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C4V7/LF1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C4V7/LF1VL?
BZX84-C4V7/LF1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C4V7/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-C4V7/LF1VL?
For technical support, including BZX84-C4V7/LF1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C4V7/LF1VL requirements.
6.How does Aetrix verify that BZX84-C4V7/LF1VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C4V7/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-C4V7/LF1VL meets industry standards.
7.What is the process for return or replacement of BZX84-C4V7/LF1VL?
All BZX84-C4V7/LF1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C4V7/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-C4V7/LF1VL part is unused and in its original packaging.
Return procedure for BZX84-C4V7/LF1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C4V7/LF1VL Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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BZT52C3V6LP-7
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