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Nexperia USA Inc. BZX8450-C2V2-QR
- Part No.:
- BZX8450-C2V2-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C2V2-QR.pdf
- Description:
- DIODE ZENER 2.2V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,365
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Product details
Overview
BZX8450-C2V2-QR from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, rated for 2.2 V nominal regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8450-C2V2-QR datasheet, BZX8450-C2V2-QR pinout, BZX8450-C2V2-QR application, or BZX8450-C2V2-QR equivalent, this device serves as a precision low-bias voltage reference in portable battery-powered systems, ECU sensor biasing, and low-power analog signal conditioning where stable 2.2 V regulation under microampere load is required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.09 V to 2.31 V at IZ = 50 µA, exhibiting a temperature coefficient of −3.5 mV/K and differential resistance ≤600 Ω at 5 mA. Its low 50 µA test current enables minimal quiescent current draw in always-on circuits.
The device features intentional minor leakage current optimization per AN90031 for improved switching speed and reduced noise in sensitive analog front-ends. It is qualified to AEC-Q101 and rated for operation from −55 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 500 K/W on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V (range 2.09 V–2.31 V at 50 µA; enables precise low-voltage biasing) |
| Tolerance | ±5 % (C-series grade; supports cost-sensitive automotive and industrial designs) |
| Test Current | 50 µA (enables ultra-low standby current in battery-critical applications) |
| Max Power Dissipation | 250 mW (at Tamb ≤ 25 °C on standard FR4 PCB; defines safe continuous operating envelope) |
| Forward Voltage | ≤ 0.9 V at 10 mA (ensures low-loss forward conduction during transient overvoltage clamping) |
| Reverse Leakage | ≤ 1.0 µA at 1 V reverse bias (minimizes parasitic current in high-impedance reference nodes) |
| Capacitance | 210 pF at 0 V, 1 MHz (affects high-frequency noise filtering and stability in feedback paths) |
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 assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased during regulation; must be routed with low-impedance path to ground or reference plane |
| 2 | Not Connected (n.c.) | Internally unconnected; no electrical function; must remain floating or tied to ground only if required by mechanical layout |
| 3 | Cathode (K) | Connected to higher-potential node; carries regulated output voltage; serves as primary heat-sinking terminal (Rth(j-sp) = 330 K/W) |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces system standby current and extends battery life in portable ECUs and IoT sensors |
| AEC-Q101 qualification | Qualified for automotive applications - ensures reliability across temperature cycling, humidity, and vibration stress profiles |
| Optimized leakage profile | Intentional minor rise in leakage per AN90031 - improves transient response and suppresses high-frequency noise in analog references |
| SOT23 footprint compatibility | Standard 3-pin SOT23 outline - enables drop-in replacement in existing designs and leverages mature reflow soldering processes |
Applications
| Automotive Sensor Biasing | Portable Battery Monitor Reference |
|---|---|
Use Scenario: Providing stable 2.2 V reference for thermistor or pressure sensor signal conditioning in engine control modules. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing fixed bias point for analog front-end amplifiers and ADC input scaling. Use Value: Maintains <±10 mV drift over −40 °C to +125 °C ambient, enabling accurate sensor calibration without active regulation. |
Use Scenario: Generating low-power reference for coulomb counter ICs in wearable health monitors and Bluetooth trackers. IC Role / Device Role / Timing Role: Passive voltage reference element delivering stable 2.2 V at sub-100 nA quiescent current in sleep mode. Use Value: Draws only 50 µA test current and exhibits <1 µA leakage at 1 V reverse bias, preserving battery capacity over multi-year deployments. |
| Industrial PLC Input Protection | Low-Voltage Microcontroller Reset Circuit |
Use Scenario: Clamping and regulating input voltage to 2.2 V for 3.3 V logic-level digital inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Zener clamp limiting transient overvoltage while maintaining defined logic threshold during normal operation. Use Value: Withstands non-repetitive 40 W surge pulses (100 µs) and maintains <0.9 V forward drop, ensuring robust interface protection. |
Use Scenario: Supplying clean, temperature-stable 2.2 V to reset supervisor ICs monitoring 2.5 V or 3.3 V rails in embedded microcontrollers. IC Role / Device Role / Timing Role: Precision shunt reference defining reset threshold voltage with predictable −3.5 mV/K temperature coefficient. Use Value: Delivers 2.2 V ±5 % over full automotive temperature range, eliminating need for external trimming resistors in reset circuit design. |
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-C2V2,115 | Same 2.2 V, ±5 %, SOT23 package but not AEC-Q101 qualified; higher typical leakage (1.5 µA vs. 1.0 µA max) | Restricted to commercial-grade industrial or consumer applications; unsuitable for automotive under hood or chassis locations | Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs long-term reliability requirements. |
| MMSZ4678T1G | 2.2 V, ±5 %, SOD-123 package; 500 mW rating; higher thermal resistance (625 K/W); no AEC-Q101 qualification | Larger footprint and inferior thermal performance limit use in dense automotive PCBs; lacks automotive qualification documentation | Choose only for legacy SOD-123 board reuse where SOT23 rework is impractical and temperature derating is acceptable. |
Compared with BZX8450-C2V2-QR, the BZX84-C2V2,115 offers identical electrical specs but lacks automotive qualification and has higher leakage, while MMSZ4678T1G trades smaller size for worse thermal performance and no AEC-Q101 support-making the BZX8450-C2V2-QR optimal for new automotive designs requiring compact, qualified, low-leakage regulation.
Availability
BZX8450-C2V2-QR is available at Aetrix Electronics and suitable for automotive ECU sensor biasing, portable battery monitor references, and industrial PLC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8450-C2V2-QR 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 components and energy-efficient solutions.
The BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, designed specifically for low-current, low-noise voltage regulation in automotive electronics and portable industrial systems.
FAQ
What is the maximum reverse voltage that BZX8450-C2V2-QR can withstand before breakdown?
The BZX8450-C2V2-QR is specified to regulate at 2.2 V nominal with a guaranteed range of 2.09 V to 2.31 V at 50 µA. Its absolute maximum reverse voltage is not defined independently-it operates within its Zener breakdown region. The device is rated for non-repetitive peak reverse power dissipation of 40 W at 100 µs pulse width, confirming robust transient handling capability.
Does BZX8450-C2V2-QR require a series resistor in all applications?
Yes-a current-limiting resistor is mandatory to set the Zener operating current within its specified range (typically 50 µA to 5 mA). Without it, excessive current may exceed the 250 mW power limit and cause thermal failure. The resistor value is calculated using (VIN − 2.2 V)/IZ, where IZ is selected based on regulation accuracy and temperature stability needs.
How does the "C" suffix in BZX8450-C2V2-QR affect its performance versus "B"-series variants?
The "C" suffix denotes ±5 % tolerance (vs. ±2 % for "B"), with tighter control on leakage current and optimized fast-switching behavior per AN90031. C-series devices exhibit lower typical leakage at low reverse voltages and improved noise suppression-making them preferred for battery-powered and noise-sensitive analog applications despite wider voltage tolerance.
Can BZX8450-C2V2-QR be used in parallel for higher power handling?
No-Zener diodes should not be paralleled due to mismatched breakdown voltages causing current hogging and thermal runaway. For higher power, select a single higher-rated Zener (e.g., BZX8450-C2V2-QR's 250 mW rating is fixed per package), or use an active regulator. Derating is required above 25 °C ambient per the 500 K/W thermal resistance specification.
BZX8450-C2V2-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C2V2-QR FAQ
1.How can I place an order for BZX8450-C2V2-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C2V2-QR 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-C2V2-QR reliable?
The price and inventory of BZX8450-C2V2-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C2V2-QR is usually 5 days.
3.What payment methods are accepted for BZX8450-C2V2-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C2V2-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C2V2-QR?
BZX8450-C2V2-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C2V2-QR 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-C2V2-QR?
For technical support, including BZX8450-C2V2-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C2V2-QR requirements.
6.How does Aetrix verify that BZX8450-C2V2-QR is sourced from the original manufacturer or authorized distributors?
All BZX8450-C2V2-QR 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-C2V2-QR meets industry standards.
7.What is the process for return or replacement of BZX8450-C2V2-QR?
All BZX8450-C2V2-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C2V2-QR, 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-C2V2-QR part is unused and in its original packaging.
Return procedure for BZX8450-C2V2-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C2V2-QR Tags
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MMBZ5240B-7-F
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Diodes Incorporated
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MM5Z5V1ST1G
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