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Nexperia USA Inc. BZX8450-C3V6VL
- Part No.:
- BZX8450-C3V6VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C3V6VL.pdf
- Description:
- DIODE ZENER 3.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,420
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Product details
Overview
BZX8450-C3V6VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in portable electronics. It delivers 3.6 V nominal regulation at 50 µA test current, with ±5 % tolerance, 2.0 µA max reverse leakage at 2.0 V, and 95 Ω dynamic resistance at 5 mA - enabling stable low-power rail stabilization in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-C3V6VL datasheet, BZX8450-C3V6VL pinout, BZX8450-C3V6VL application, or BZX8450-C3V6VL equivalent, this page provides verified electrical parameters, validated SOT23 terminal mapping, confirmed low-leakage behavior per AN90031, and direct alternatives with documented voltage/tolerance/leakage trade-offs.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining a stable 3.6 V reference across its cathode-anode terminals under reverse-biased conditions. Its specified 50 µA test current enables accurate low-bias operation, while intentional minor leakage rise (per AN90031) reduces noise and improves switching response in signal conditioning paths.
The diode exhibits a −3.5 mV/K temperature coefficient and 160 pF junction capacitance at 0 V, making it suitable for DC reference and low-frequency stabilization rather than RF or high-speed transient suppression. Thermal resistance of 330 K/W to solder point supports reliable operation on standard FR4 PCBs with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.6 V at IZ = 50 µA - defines precise DC reference level for low-current bias networks |
| Voltage Tolerance | ±5 % - ensures predictable regulation window (3.42 V to 3.78 V) for non-critical analog references |
| Differential Resistance | 95 Ω at IZ = 5 mA - limits output impedance drift under load variation in feedback paths |
| Reverse Leakage Current | 2.0 µA max at VR = 2.0 V - enables ultra-low quiescent power in always-on monitoring circuits |
| Forward Voltage | 0.9 V max at IF = 10 mA - supports use as polarity-protected clamp in bidirectional signal lines |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C - constrains maximum continuous Zener current to ~69 mA at 3.6 V |
| Junction Temperature Limit | 150 °C - sets thermal derating threshold for sustained operation in enclosed industrial enclosures |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated placement and reflow soldering on FR4 PCBs with single-sided 70 µm copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased during regulation; carries forward current when used as clamp |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or via allowed |
| 3 | Cathode (K) | Connects to higher-potential node; primary current path during Zener conduction; thermal path to PCB solder point |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at 50 µA - enables accurate voltage setting in nanoamp-level bias networks without loading source |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces broadband noise and improves transient settling in reference buffers |
| Compact SOT23 footprint | 2.9 mm × 1.3 mm body - saves board space in wearables and multi-sensor modules where layout density is critical |
| Stable temperature coefficient | −3.5 mV/K - minimizes drift over −55 °C to +150 °C ambient, supporting industrial-grade sensor calibration |
| Controlled junction capacitance | 160 pF at 0 V - predictable AC impedance for filtering low-frequency ripple without destabilizing op-amp feedback loops |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Network |
|---|---|
|
Use Scenario: Generating a clean, stable 3.6 V threshold for an external reset supervisor IC in a BLE-enabled environmental sensor node powered by a CR2032 coin cell. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage reference for reset comparator input, ensuring deterministic power-on reset timing independent of battery voltage sag. Use Value: 2.0 µA max leakage preserves battery life beyond 5 years in sleep mode; ±5 % tolerance aligns with reset IC hysteresis requirements. |
Use Scenario: Providing regulated bias voltage to a low-power analog front-end (AFE) for a MEMS accelerometer in a wearable fitness tracker. IC Role / Device Role / Timing Role: Functions as shunt regulator for AFE VREF rail, rejecting supply ripple while drawing negligible current from the LDO output. Use Value: 95 Ω dynamic resistance maintains <10 mV output deviation across 1–5 mA AFE load steps; SOT23 size fits within tight 8 mm² module footprint. |
| USB-C Port Protection Clamp | Industrial Thermocouple Cold-Junction Compensation |
|
Use Scenario: Clamping VBUS line transients in a USB-C peripheral dongle using bidirectional configuration with series resistor. IC Role / Device Role / Timing Role: Forward-conducting anode-to-VBUS and reverse-conducting cathode-to-GND to limit overvoltage spikes to 0.9 V and 3.6 V respectively. Use Value: 0.9 V forward voltage prevents false triggering of downstream protection; 250 mW rating handles 100 µs ESD pulses per IEC 61000-4-2 Level 4. |
Use Scenario: Stabilizing reference voltage for cold-junction compensation circuitry in a DIN-rail mounted temperature transmitter operating from 24 V loop supply. IC Role / Device Role / Timing Role: Provides fixed 3.6 V reference for ADC biasing and DAC output scaling, compensating for thermocouple Seebeck coefficient drift. Use Value: −3.5 mV/K tempco matches typical silicon-based compensation ICs; 150 °C max junction temperature supports operation in 70 °C cabinet environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V6 | Same 3.6 V nominal, ±5 % tolerance, but rated at 100 µA test current and higher 200 µA max leakage at 2.0 V | Higher leakage reduces battery life in always-on IoT sensors; less suitable for sub-µA bias networks | Select only if legacy design compatibility or higher surge current margin is required |
| MMSZ4685 | 3.6 V nominal, ±5 %, but 220 Ω dynamic resistance at 5 mA and −2.0 mV/K tempco | Higher rdiff causes greater output droop under load; weaker thermal stability affects long-term calibration accuracy | Prefer for cost-sensitive consumer applications where ±10 mV regulation shift over temperature is acceptable |
Compared with BZX8450-C3V6VL, BZX84-C3V6 trades lower test-current accuracy for higher surge robustness, while MMSZ4685 sacrifices regulation stability and thermal predictability for broader distributor availability - making the BZX8450-C3V6VL optimal for precision, low-leakage, thermally stable references in space-constrained designs.
Availability
BZX8450-C3V6VL is available at Aetrix Electronics and suitable for portable sensor bias networks, microcontroller reset circuits, USB-C port clamping, and industrial thermocouple compensation requiring stable component supply with full traceability and lifecycle management.
Supply support for BZX8450-C3V6VL 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, with leadership in automotive-qualified and industrial-grade components.
The BZX8450 series belongs to Nexperia's precision low-current Zener regulator product line, engineered specifically for battery-powered and space-constrained applications demanding low leakage, tight voltage tolerance, and stable thermal performance.
FAQ
What is the maximum continuous Zener current for BZX8450-C3V6VL at 70 °C ambient?
At 70 °C ambient, derating applies: total power dissipation drops to ~180 mW (based on 500 K/W junction-to-ambient thermal resistance). With 3.6 V regulation, maximum continuous Zener current is approximately 50 mA - calculated as 180 mW ÷ 3.6 V. Exceeding this risks thermal runaway due to negative tempco interaction.
Can BZX8450-C3V6VL be used in forward-biased clamp configurations?
Yes - its 0.9 V max forward voltage at 10 mA makes it suitable as a low-threshold clamp. In forward mode, Pin 1 (anode) connects to signal, Pin 3 (cathode) to rail or ground. The n.c. Pin 2 must remain unconnected. Forward conduction remains stable up to 200 mA peak per absolute maximum ratings.
How does the "C" suffix in BZX8450-C3V6VL affect its electrical behavior versus "B" variants?
The "C" suffix denotes ±5 % voltage tolerance and optimized leakage characteristics per AN90031 - specifically, intentionally elevated reverse current at low VR to reduce noise and improve switching speed. "B" variants offer tighter ±2 % tolerance but lower leakage, making "C" preferred for noise-sensitive analog references and fast-settling bias networks.
Is the SOT23 package of BZX8450-C3V6VL compatible with standard IPC-7351B footprints?
Yes - its dimensions (2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm pin pitch) match IPC-7351B SOT-23 generic land pattern. Recommended reflow footprint uses 0.6 mm × 0.6 mm solder pads with 0.5 mm spacing (Fig. 10), supporting both leaded and lead-free processes without tombstoning risk on standard FR4 substrates.
BZX8450-C3V6VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C3V6VL FAQ
1.How can I place an order for BZX8450-C3V6VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C3V6VL 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 BZX8450-C3V6VL reliable?
The price and inventory of BZX8450-C3V6VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C3V6VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C3V6VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C3V6VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C3V6VL?
BZX8450-C3V6VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C3V6VL 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 BZX8450-C3V6VL?
For technical support, including BZX8450-C3V6VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C3V6VL requirements.
6.How does Aetrix verify that BZX8450-C3V6VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C3V6VL 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 BZX8450-C3V6VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C3V6VL?
All BZX8450-C3V6VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C3V6VL, 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 BZX8450-C3V6VL part is unused and in its original packaging.
Return procedure for BZX8450-C3V6VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C3V6VL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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