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Nexperia USA Inc. BZX84-C3V6/DG/B3:2
- Part No.:
- BZX84-C3V6/DG/B3:2
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C3V6/DG/B3:2.pdf
- Description:
- DIODE ZENER 3.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,082
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Product details
Overview
BZX84-C3V6/DG/B3:2 from Nexperia is a 3.6 V, 250 mW surface-mount Zener diode in SOT-23 package with ±5% tolerance, 100 nA maximum reverse leakage at 1 V, and 90 Ω dynamic impedance at 5 mA, used for voltage regulation and overvoltage protection in low-power sensor interfaces.
For engineers reviewing the BZX84-C3V6/DG/B3:2 datasheet, BZX84-C3V6/DG/B3:2 pinout, BZX84-C3V6/DG/B3:2 application, or BZX84-C3V6/DG/B3:2 equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, thermal resistance, reverse leakage behavior under bias, and compatibility with 0.6 mm pitch PCB assembly processes.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 3.6 V reference across its anode–cathode terminals. It is characterized at 5 mA test current with 90 Ω dynamic impedance and exhibits 100 nA reverse leakage at 1 V, ensuring minimal standby current draw in always-on circuits.
The SOT-23 package provides a thermal resistance of 375 K/W (junction-to-ambient), limiting continuous power dissipation to 250 mW at 25 °C ambient. Its 3.6 V nominal Zener voltage targets logic-level rail clamping and ADC reference stabilization in 3.3 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V ±5% at IZ = 5 mA - defines clamping threshold for 3.3 V supply rails with margin against logic high-level drift. |
| Power Dissipation (Ptot) | 250 mW - sets maximum continuous current to ~69 mA at 3.6 V, constraining use to signal-level rather than power-rail regulation. |
| Dynamic Impedance (ZZ) | 90 Ω at IZ = 5 mA - determines output voltage variation under load changes; suitable for low-current references but not precision analog rails. |
| Reverse Leakage (IR) | ≤100 nA at VR = 1 V - ensures negligible quiescent current in battery-powered sensor nodes during sleep mode. |
| Package | SOT-23 - enables automated placement on 0.6 mm pitch PCBs and supports reflow soldering per JEDEC J-STD-020. |
| Junction-to-Ambient RθJA | 375 K/W - limits usable power in still-air environments; derating required above 25 °C ambient. |
Pinout & Package
SOT-23 plastic surface-mount package with three terminals: anode, cathode, and unused lead (pin 3 is internally unconnected). Standard pin assignment: Pin 1 = anode, Pin 2 = cathode, Pin 3 = NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node; reverse-biased operation requires this terminal to be at lower voltage than cathode. |
| Pin 2 | Cathode | Connected to regulated rail or protected node; carries full Zener current during clamping events. |
| Pin 3 | No Connect | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables direct replacement in 3.3 V system clamp designs without recalibration of adjacent resistor dividers. |
| 250 mW power rating | Supports transient overvoltage suppression up to 100 ms pulses without thermal runaway in compact sensor modules. |
| 100 nA reverse leakage at 1 V | Permits integration into ultra-low-power wake-up circuits where standby current must stay below 500 nA. |
| SOT-23 footprint | Matches standard pick-and-place tooling and allows board area reduction versus DO-35 or SOD-323 packages. |
Applications
| Industrial Sensor Signal Conditioning | USB Peripheral Port Protection |
|---|---|
Use Scenario: Clamping analog output of a 3.3 V temperature sensor IC to prevent ADC input saturation during ESD transients. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage limiter at sensor output node. Use Value: Limits excursion to ≤3.6 V while drawing <1 µA leakage, preserving sensor offset accuracy and linearity. | Use Scenario: Protecting D+ and D− lines of a USB 2.0 device port against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp placed between data line and ground. Use Value: Responds within nanoseconds to divert >1 A peak ESD current, preventing PHY latch-up without adding signal integrity risk. |
| Low-Power IoT Node Voltage Reference | Microcontroller Reset Circuit Clamp |
Use Scenario: Providing coarse 3.6 V reference for ADC measurement of battery voltage in coin-cell-powered BLE sensors. IC Role / Device Role / Timing Role: Passive Zener reference source feeding resistive divider into ADC input. Use Value: Delivers stable reading across 2.0–3.6 V battery range with <0.5% error contribution from Zener tolerance and tempco. | Use Scenario: Limiting reset pin voltage during hot-plug events on a 3.3 V microcontroller with open-drain reset supervisor. IC Role / Device Role / Timing Role: Cathode-connected to reset line, anode to ground - clamps high-voltage spikes before they exceed absolute max rating. Use Value: Prevents false resets by holding reset line ≤3.6 V during 100 ns transients, compatible with 100 kΩ pull-up networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4685-7-F | Same 3.6 V nominal, ±5% tolerance, but rated at 500 mW and packaged in SOD-123. | Higher power handling supports longer-duration transients; larger footprint requires layout revision. | Select when clamping energy exceeds 25 mJ or ambient temperature exceeds 60 °C. |
| BZX84-C3V6,215 | Identical electrical specs and SOT-23 package, but manufactured by Nexperia with different traceability coding (215 vs B3:2). | No functional difference; differs only in date code format and reel packaging marking. | Use for second-source procurement where B3:2 is out of stock but same lot traceability is not required. |
Compared with MMSZ4685-7-F, BZX84-C3V6/DG/B3:2 offers smaller board area and lower thermal mass for fast transient response but requires stricter power derating. Compared with BZX84-C3V6,215, it shares identical performance but differs in manufacturing batch identification and tape-and-reel labeling convention.
Availability
BZX84-C3V6/DG/B3:2 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB peripheral protection, low-power IoT voltage referencing, and microcontroller reset clamping requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX84-C3V6/DG/B3:2 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 essential efficiency technologies, delivering high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84 series belongs to Nexperia's general-purpose Zener diode product line, designed specifically for cost-sensitive, space-constrained voltage regulation and protection tasks in battery-powered and interface-critical applications.
FAQ
What is the maximum reverse voltage that can be continuously applied without breakdown?
The BZX84-C3V6/DG/B3:2 has a nominal Zener voltage of 3.6 V at 5 mA test current. Its reverse breakdown begins at approximately 3.42 V (−5% tolerance) and extends to 3.78 V (+5%). Applying less than 3.42 V in reverse bias ensures no significant conduction occurs; sustained voltage above 3.78 V risks exceeding power rating unless current is strictly limited by external resistance.
Can this Zener diode be used in place of a TVS diode for ESD protection?
It can provide basic ESD clamping for low-energy events (e.g., IEC 61000-4-2 Level 2), but lacks the low clamping voltage and high peak pulse power rating of dedicated TVS devices. Its 90 Ω dynamic impedance results in higher clamped voltage under fast transients compared to sub-1 Ω TVS diodes, making it unsuitable for high-speed data line protection beyond simple I/O pins.
Is the SOT-23 package lead-free and RoHS compliant?
Yes, the BZX84-C3V6/DG/B3:2 is manufactured with lead-free terminations and complies with RoHS Directive 2011/65/EU and REACH SVHC regulations. The SOT-23 package uses matte tin plating over nickel underplate, qualified for standard SnPb and lead-free reflow profiles per JEDEC J-STD-020.
How does temperature affect the Zener voltage stability?
This device exhibits a positive temperature coefficient of +2.5 mV/K near 3.6 V, meaning its Zener voltage increases by ~2.5 mV per degree Celsius rise in junction temperature. Over −65 °C to +150 °C, total drift remains within ±150 mV, making it suitable for ambient-stable applications but not for precision temperature-compensated references.
BZX84-C3V6/DG/B3:2 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:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 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-C3V6/DG/B3:2 FAQ
1.How can I place an order for BZX84-C3V6/DG/B3:2 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C3V6/DG/B3:2 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-C3V6/DG/B3:2 reliable?
The price and inventory of BZX84-C3V6/DG/B3:2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V6/DG/B3:2 is usually 5 days.
3.What payment methods are accepted for BZX84-C3V6/DG/B3:2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V6/DG/B3:2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C3V6/DG/B3:2?
BZX84-C3V6/DG/B3:2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C3V6/DG/B3:2 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-C3V6/DG/B3:2?
For technical support, including BZX84-C3V6/DG/B3:2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V6/DG/B3:2 requirements.
6.How does Aetrix verify that BZX84-C3V6/DG/B3:2 is sourced from the original manufacturer or authorized distributors?
All BZX84-C3V6/DG/B3:2 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-C3V6/DG/B3:2 meets industry standards.
7.What is the process for return or replacement of BZX84-C3V6/DG/B3:2?
All BZX84-C3V6/DG/B3:2 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V6/DG/B3:2, 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-C3V6/DG/B3:2 part is unused and in its original packaging.
Return procedure for BZX84-C3V6/DG/B3:2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C3V6/DG/B3:2 Tags
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