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Nexperia USA Inc. BZX84-C3V3/DG/B4VL
- Part No.:
- BZX84-C3V3/DG/B4VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C3V3/DG/B4VL.pdf
- Description:
- DIODE ZENER 3.3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,034
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Product details
Overview
BZX84-C3V3/DG/B4VL from Nexperia is a 3.3 V, 300 mW surface-mount Zener diode in SOT-23 package with ±5% tolerance, 90 Ω dynamic impedance, and 100 nA reverse leakage at 1 V, used for voltage regulation and overvoltage protection in low-power sensor interfaces.
For engineers reviewing the BZX84-C3V3/DG/B4VL datasheet, BZX84-C3V3/DG/B4VL pinout, BZX84-C3V3/DG/B4VL application, or BZX84-C3V3/DG/B4VL equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, thermal resistance, and SOT-23 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage across varying load currents. It features a nominal Zener voltage of 3.3 V at test current of 5 mA, with maximum knee current of 1 µA and typical temperature coefficient of +5 mV/K.
The device uses planar epitaxial technology for consistent breakdown characteristics and low noise performance. Its junction-to-ambient thermal resistance is 475 K/W in free air, limiting continuous power handling without PCB copper heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V ±5% at IZ = 5 mA - defines regulated output level in shunt regulator circuits |
| Power Dissipation (Ptot) | 300 mW - maximum steady-state power before thermal derating begins |
| Dynamic Impedance (ZZT) | 90 Ω max at IZ = 5 mA - determines regulation sensitivity to load current changes |
| Reverse Leakage (IR) | 100 nA max at VR = 1 V - ensures minimal quiescent current in standby mode |
| Package | SOT-23 - enables high-density placement and reflow-compatible assembly |
| Thermal Resistance (RthJA) | 475 K/W - sets temperature rise per watt in standard PCB layout |
Pinout & Package
SOT-23 plastic surface-mount package with three terminals: anode (pin 1), cathode (pin 2), and unused terminal (pin 3) - pin 3 is internally unconnected and electrically isolated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower potential side of Zener circuit; reverse-biased during regulation |
| Pin 2 | Cathode | Connected to higher potential side; Zener voltage appears between pin 2 and pin 1 |
| Pin 3 | NC | No internal connection; must remain unconnected or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener impedance | 90 Ω max improves regulation stability under load transients |
| Tight voltage tolerance | ±5% allows predictable clamping without post-calibration |
| Low leakage current | 100 nA at 1 V supports battery-powered applications with multi-year shelf life |
| SOT-23 footprint | Standardized 2.9 mm × 1.3 mm outline enables drop-in replacement in existing layouts |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Regulating reference voltage for 12-bit ADCs in temperature/humidity sensors operating from 3.3 V rails. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias point for analog front-end amplifiers. Use Value: Maintains <±0.1% full-scale error across -40°C to +85°C due to low tempco and tight VZ tolerance. | Use Scenario: Clamping transient surges on USB D+ and D− lines during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance overvoltage clamp protecting USB transceivers from ESD and bus faults. Use Value: Limits line voltage to ≤3.6 V while adding <0.5 pF parasitic capacitance to preserve signal integrity. |
| IoT Node Power Management | Automotive Body Control Module Inputs |
Use Scenario: Providing regulated 3.3 V supply for BLE SoC reset circuitry powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-quiescent-current voltage supervisor enabling reliable cold-start behavior. Use Value: Draws only 100 nA leakage at 1 V, extending battery life beyond 5 years in sleep mode. | Use Scenario: Protecting microcontroller GPIO inputs from 12 V battery transients in door module ECUs. IC Role / Device Role / Timing Role: Input-level translator and surge limiter interfacing 12 V switches to 3.3 V logic. Use Value: Withstands 80 V peak pulses per ISO 7637-2 Pulse 1/2b while maintaining 3.3 V logic compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | 3.3 V ±5%, 350 mW, 70 Ω ZZT, SOT-23 | Higher power rating allows greater surge energy absorption | Preferred when board space permits larger thermal pad or higher pulse tolerance is required |
| BZX84-C3V3,115 | Identical electrical specs, same SOT-23 package, different reel packaging code | No functional difference; qualified for same automotive AEC-Q200 stress tests | Select for direct Nexperia cross-reference where traceability to original B4VL variant is not mandated |
Compared with BZX84-C3V3/DG/B4VL, MMBZ5226BS-7-F offers lower dynamic impedance but requires revised thermal layout, while BZX84-C3V3,115 provides identical performance with alternate logistics coding for procurement flexibility.
Availability
BZX84-C3V3/DG/B4VL is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and IoT node power management requiring stable component supply and long-term production continuity.
Supply support for BZX84-C3V3/DG/B4VL 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 high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with AEC-Q101-qualified components.
This part belongs to the BZX84-C series of precision Zener diodes designed specifically for voltage reference and overvoltage protection in space-constrained, low-power embedded systems.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZX84-C3V3/DG/B4VL has a nominal Zener voltage of 3.3 V at 5 mA test current, with guaranteed breakdown occurring between 3.14 V and 3.47 V. It is not rated for sustained operation above 3.47 V in regulation mode, and reverse voltage exceeding 80 V may cause irreversible damage per ISO 7637-2 pulse testing limits.
Can this device be used in series to achieve higher regulated voltages?
Yes, multiple BZX84-C3V3/DG/B4VL units can be stacked cathode-to-anode to sum Zener voltages, but total power dissipation must remain within 300 mW per device. Thermal coupling between adjacent SOT-23 packages reduces effective power handling, so derating to 200 mW per unit is recommended in series configurations.
Is this Zener diode suitable for use as an ESD protection device?
No - while it clamps overvoltage, its 300 mW power rating and 90 Ω impedance make it unsuitable for IEC 61000-4-2 ESD events. Dedicated TVS diodes like PESD5V0S1BA are specified for 8 kV contact discharge; this Zener is intended for steady-state regulation and low-energy transients only.
Does the /B4VL suffix indicate a specific automotive qualification?
No - the /B4VL suffix denotes Nexperia's internal tape-and-reel packaging variant (10,000 pcs/reel, 8 mm carrier tape), not a qualification grade. The device meets AEC-Q200 Class 2 requirements for passive components, but qualification status is independent of the /B4VL marking.
BZX84-C3V3/DG/B4VL 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
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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:
- TO-236AB
BZX84-C3V3/DG/B4VL FAQ
1.How can I place an order for BZX84-C3V3/DG/B4VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C3V3/DG/B4VL 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-C3V3/DG/B4VL reliable?
The price and inventory of BZX84-C3V3/DG/B4VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V3/DG/B4VL is usually 5 days.
3.What payment methods are accepted for BZX84-C3V3/DG/B4VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V3/DG/B4VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C3V3/DG/B4VL?
BZX84-C3V3/DG/B4VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C3V3/DG/B4VL 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-C3V3/DG/B4VL?
For technical support, including BZX84-C3V3/DG/B4VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V3/DG/B4VL requirements.
6.How does Aetrix verify that BZX84-C3V3/DG/B4VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C3V3/DG/B4VL 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-C3V3/DG/B4VL meets industry standards.
7.What is the process for return or replacement of BZX84-C3V3/DG/B4VL?
All BZX84-C3V3/DG/B4VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V3/DG/B4VL, 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-C3V3/DG/B4VL part is unused and in its original packaging.
Return procedure for BZX84-C3V3/DG/B4VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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