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Nexperia USA Inc. BZX84-C3V3,235
- Part No.:
- BZX84-C3V3,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C3V3,235.pdf
- Description:
- DIODE ZENER 3.3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:43,265
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Product details
Overview
BZX84-C3V3,235 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for low-power voltage reference and overvoltage protection in space-constrained PCBs. It delivers 3.3 V nominal breakdown at 5 mA, with 95 Ω max differential resistance, 5 µA reverse current at 1 V, and 250 mW total power dissipation - used in power supply feedback loops, microcontroller I/O clamping, and sensor biasing circuits.
For engineers reviewing the BZX84-C3V3,235 datasheet, BZX84-C3V3,235 pinout, BZX84-C3V3,235 application, or BZX84-C3V3,235 equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (500 K/W junction-to-ambient), non-repetitive surge capability (40 W), and SOT23 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its cathode-anode terminals under varying load or input conditions. Its temperature coefficient of −3.5 mV/K at 5 mA ensures predictable drift behavior in ambient ranges from −55 °C to +150 °C.
The device features a 3-pin SOT23 package with Pin 1 = anode, Pin 2 = not connected, Pin 3 = cathode - enabling unidirectional regulation without internal series resistance or integrated thermal shutdown. Its 450 pF capacitance at 0 V and 1 MHz supports moderate-speed transient suppression but excludes RF bypass use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.10 V to 3.50 V at IZ = 5 mA - defines regulated output range under standard test conditions |
| Differential Resistance (rdif) | ≤95 Ω - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤5 µA at VR = 1 V - sets minimum leakage in standby or undervoltage states |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - limits continuous DC power handling without derating |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs - enables short-duration surge clamping in ESD or inductive kick scenarios |
| Junction Temperature (Tj) | −55 °C to +150 °C - specifies operational silicon temperature envelope independent of ambient |
| Thermal Resistance (Rth(j-a)) | 500 K/W - quantifies self-heating rise per watt on standard FR4 layout |
Pinout & Package
Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.3 mm × 2.9 mm footprint and 1.1 mm height. Standardized for reflow and wave soldering per Figures 12–13 in datasheet Rev. 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-bias current enters here during regulation |
| 2 | Not Connected (n.c.) | Internally isolated; no electrical function - must remain unconnected on PCB |
| 3 | Cathode (K) | Connected to higher-potential node; regulated voltage referenced to this terminal |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective regulation where tight voltage accuracy is not required, e.g., non-critical biasing |
| 250 mW power rating | Supports regulation in low-current signal paths (<200 mA forward limit) without heatsinking |
| 40 W non-repetitive surge capability | Clamps transient overvoltages such as ESD events or inductive spikes without failure |
| SOT23 footprint compatibility | Integrates into high-density layouts using standard pick-and-place and reflow processes |
| −55 °C to +150 °C operating range | Validates use in industrial control, automotive under-hood (non-qualified), and outdoor electronics |
Applications
| Power Supply Feedback | Microcontroller I/O Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage of a buck converter's error amplifier reference input. IC Role / Device Role / Timing Role: Zener diode provides fixed 3.3 V reference point for feedback divider network. Use Value: Maintains ±5 % output regulation despite input ripple and load variation up to 200 mA. |
Use Scenario: Clamping 3.3 V GPIO pins against accidental 5 V insertion or ESD. IC Role / Device Role / Timing Role: Reverse-biased Zener shunts overvoltage to ground before MCU input structure fails. Use Value: Limits pin voltage to ≤3.5 V during transients, preventing latch-up or oxide damage. |
| Sensor Biasing Circuit | Reference Voltage Generator |
|
Use Scenario: Providing stable excitation voltage to a resistive temperature detector (RTD) bridge. IC Role / Device Role / Timing Role: Acts as low-noise, low-drift voltage source for precision analog front-end. Use Value: Delivers 3.3 V ±0.2 V across −40 °C to +85 °C, minimizing measurement offset error. |
Use Scenario: Generating local 3.3 V reference for ADC conversion in battery-powered IoT node. IC Role / Device Role / Timing Role: Supplies clean, temperature-compensated reference independent of main rail. Use Value: Enables 10-bit ADC accuracy by limiting reference drift to <0.5 % over operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5226BS-7-F | 3.3 V ±5 %, 200 mW Ptot, 100 Ω rdif, SOT23 package | Higher differential resistance reduces regulation precision under dynamic loads | Select when legacy ON Semi sourcing or tighter inventory alignment is required |
| Vishay BZX84-C3V3-TP | 3.3 V ±5 %, 300 mW Ptot, 95 Ω rdif, same SOT23 pinout | Higher power rating allows margin for intermittent overload conditions | Prefer for designs needing extended surge endurance or higher ambient temperature operation |
Compared with BZX84-C3V3,235, MMBZ5226BS-7-F trades regulation stability for broader distributor availability, while BZX84-C3V3-TP offers +50 mW headroom at identical voltage tolerance and thermal performance - making it suitable for thermally constrained industrial nodes.
Availability
BZX84-C3V3,235 is available at Aetrix Electronics and suitable for power supply feedback, microcontroller I/O protection, and sensor biasing requiring stable component supply, consistent parametric performance, and SOT23-compatible manufacturing flow.
Supply support for BZX84-C3V3,235 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability and manufacturability.
The BZX84 series belongs to Nexperia's voltage regulator diode product line, engineered for cost-sensitive, space-constrained applications requiring stable DC voltage references and basic overvoltage protection in consumer, industrial, and computing systems.
FAQ
What is the maximum continuous reverse current this Zener can handle?
The BZX84-C3V3,235 has a maximum forward current rating of 200 mA, but its continuous reverse (Zener) current is limited by power dissipation: at 25 °C ambient, IZ ≤ 75 mA ensures Ptot stays within 250 mW. Derating is required above 25 °C per the 500 K/W thermal resistance.
Can Pin 2 be grounded or left floating on the PCB?
Pin 2 is internally not connected and must remain unconnected on the PCB - neither grounded nor tied to any net. Connecting it risks mechanical stress or unintended parasitic coupling, and violates the device's validated SOT23 mounting configuration per datasheet Figure 11.
How does the −3.5 mV/K temperature coefficient affect regulation accuracy?
At 5 mA Zener current, the voltage shifts −3.5 mV per Kelvin rise in junction temperature. Over a 100 °C range (−25 °C to +75 °C), this causes ~350 mV drift - meaning a 3.3 V nominal device may regulate between 3.15 V and 3.45 V depending on thermal conditions, which aligns with its ±5 % tolerance band.
Is this part qualified for automotive applications?
No. The BZX84-C3V3,235 is explicitly marked as non-automotive qualified in Nexperia's Revision History (Section 13). It lacks AEC-Q200 stress testing and is not rated for automotive temperature or reliability requirements. For automotive use, select Nexperia's BZX84-Q series variants.
BZX84-C3V3,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C3V3,235 FAQ
1.How can I place an order for BZX84-C3V3,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C3V3,235 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-C3V3,235 reliable?
The price and inventory of BZX84-C3V3,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V3,235 is usually 5 days.
3.What payment methods are accepted for BZX84-C3V3,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V3,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C3V3,235?
BZX84-C3V3,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C3V3,235 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-C3V3,235?
For technical support, including BZX84-C3V3,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V3,235 requirements.
6.How does Aetrix verify that BZX84-C3V3,235 is sourced from the original manufacturer or authorized distributors?
All BZX84-C3V3,235 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-C3V3,235 meets industry standards.
7.What is the process for return or replacement of BZX84-C3V3,235?
All BZX84-C3V3,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V3,235, 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-C3V3,235 part is unused and in its original packaging.
Return procedure for BZX84-C3V3,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C3V3,235 Tags
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