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Nexperia USA Inc. BZX8450-C3V0-QR
- Part No.:
- BZX8450-C3V0-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C3V0-QR.pdf
- Description:
- DIODE ZENER 3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,501
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Product details
Overview
BZX8450-C3V0-Q from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in automotive and portable electronics. It delivers 3.0 V nominal regulation at 50 µA test current, with ±5 % tolerance, 0.8 µA max reverse leakage at VR = 3.0 V, and 250 mW total power dissipation.
For engineers reviewing the BZX8450-C3V0-Q datasheet, BZX8450-C3V0-Q pinout, BZX8450-C3V0-Q application, or BZX8450-C3V0-Q equivalent, this device is selected for low-power voltage stabilization in battery-powered sensor nodes, automotive ECU reference rails, and precision analog front-ends where minimal quiescent current and AEC-Q101 qualification are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.85 V to 3.15 V at IZ = 50 µA. Its differential resistance is ≤600 Ω at IZ = 50 µA and ≤100 Ω at IZ = 5 mA, enabling stable regulation under light-load conditions.
The device features an intentional minor rise in leakage current (per AN90031) to optimize fast switching response and reduce noise in sensitive analog circuits. It is qualified to AEC-Q101 and rated for operation from −55 °C to +150 °C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V (min 2.85 V, max 3.15 V at IZ = 50 µA - defines stable reference point for low-bias circuits) |
| Tolerance | ±5 % (C-series - enables cost-effective selection where tighter tolerance is not required) |
| Reverse Leakage Current | 0.8 µA max at VR = 3.0 V (ensures ultra-low standby power in battery-critical designs) |
| Power Dissipation | 250 mW at Tamb ≤ 25 °C (supports continuous operation on standard FR4 PCB without heatsinking) |
| Forward Voltage | 0.9 V max at IF = 10 mA (limits conduction loss when used bidirectionally or in protection schemes) |
| Junction Temperature | 150 °C max (enables reliable operation in under-hood automotive environments) |
| Thermal Resistance | 500 K/W junction-to-ambient (free air - informs thermal derating for PCB layout) |
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 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-biased Zener configuration; must be held at voltage ≤ cathode minus VZ to enable regulation |
| 2 | Not Connected (n.c.) | Internally unconnected terminal - no PCB trace or solder joint required; electrically isolated |
| 3 | Cathode (K) | Connects to higher-potential node; defines Zener breakdown direction and polarity of regulated output |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Rated at 50 µA - enables stable regulation in micro-power systems where supply current is limited to sub-100 µA |
| AEC-Q101 qualification | Qualified for automotive applications - ensures reliability under thermal cycling, humidity, and mechanical stress per automotive standards |
| Optimized leakage profile | Intentional minor leakage rise (AN90031) - improves transient response and reduces high-frequency noise in reference paths |
| Small-footprint SOT23 | Standardized 3-pin SMT package - supports high-density routing and compatibility with existing pick-and-place workflows |
Applications
| Automotive Body Control Module (BCM) | Portable Gas Sensor Interface |
|---|---|
Use Scenario: Stable 3.0 V reference for ADC input scaling and microcontroller I/O level translation in BCM sub-modules. IC Role / Device Role / Timing Role: Zener voltage reference diode providing precise, low-drift bias for analog signal conditioning circuitry. Use Value: Enables accurate sensor measurement across −40 °C to +125 °C operating range while meeting AEC-Q101 reliability requirements. |
Use Scenario: Low-current voltage clamp for electrochemical gas sensor biasing in handheld CO or NO₂ detectors. IC Role / Device Role / Timing Role: Precision Zener regulator establishing fixed sensor excitation voltage from coin-cell or Li-ion sources. Use Value: Maintains sensor linearity and repeatability with <0.8 µA leakage, extending battery life beyond 2 years in intermittent-readout mode. |
| Industrial PLC Analog Input Card | Medical Wearable Front-End |
Use Scenario: Overvoltage protection and rail stabilization for 3.3 V analog input buffers in modular PLC I/O modules. IC Role / Device Role / Timing Role: Shunt regulator clamping transient spikes and stabilizing reference voltage for op-amp gain-setting networks. Use Value: Limits fault energy during field-wiring transients while maintaining <1 % regulation error at 10 µA load current. |
Use Scenario: Reference voltage source for ultra-low-power ECG amplifier biasing in patch-style cardiac monitors. IC Role / Device Role / Timing Role: Low-leakage Zener diode supplying stable 3.0 V to instrumentation amplifier bias nodes. Use Value: Reduces system noise floor by >15 dB versus standard Zeners due to optimized leakage/noise trade-off per AN90031. |
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-C3V0,115 (Nexperia) | Same 3.0 V nominal, ±5 % tolerance, but non-AEC-Q101; 200 mW Ptot rating | Limited to industrial/commercial use; lacks automotive qualification and optimized leakage profile | Select only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
| MMSZ5226ET1G (onsemi) | 3.0 V nominal, ±5 %, 500 mW Ptot, but 10 µA IR max at VR = 3.0 V - 12× higher leakage | Suitable for higher-power regulation, but unsuitable for µA-level battery systems due to excessive standby drain | Prefer only when higher power handling is needed and leakage budget allows ≥10 µA |
Compared with BZX8450-C3V0-Q, the BZX84-C3V0,115 sacrifices automotive qualification and thermal robustness for lower cost, while MMSZ5226ET1G trades ultra-low leakage for higher power capacity - making the BZX8450-C3V0-Q uniquely suited for AEC-Q101-compliant, micro-power reference applications.
Availability
BZX8450-C3V0-Q is available at Aetrix Electronics and suitable for automotive body control modules, portable gas sensor interfaces, and industrial PLC analog input cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8450-C3V0-Q 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 global semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with core expertise in automotive-qualified components.
The BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current voltage regulation in automotive and portable electronics where precision, low leakage, and thermal resilience are critical.
FAQ
What is the maximum reverse leakage current for BZX8450-C3V0-Q at 3.0 V?
The maximum reverse leakage current (IR) is 0.8 µA at VR = 3.0 V and Tj = 25 °C, as specified in Table 8 of the datasheet. This value remains ≤1.0 µA across the full −55 °C to +150 °C operating temperature range, supporting ultra-low-power design goals.
Is BZX8450-C3V0-Q compatible with reflow soldering processes?
Yes - it is qualified for lead-free reflow soldering per JEDEC J-STD-020. The recommended reflow profile uses a peak temperature of 260 °C for ≤30 seconds, with preheat ramp rate ≤3 °C/s. Figure 10 provides the exact SOT23 reflow footprint and pad dimensions.
How does the "C" suffix differ from "B" in the BZX8450-Q series?
The "C" suffix denotes ±5 % tolerance and incorporates an intentional minor rise in leakage current (per AN90031) to improve switching speed and reduce noise. The "B" suffix indicates ±2 % tolerance and standard leakage behavior - making "C" variants preferred for noise-sensitive, low-bias applications.
Can BZX8450-C3V0-Q be used in series or parallel configurations?
Series connection is permissible for higher-voltage references, provided current sharing and thermal coupling are managed. Parallel use is not recommended due to mismatched Zener voltages causing uneven current distribution and potential thermal runaway - single-device operation is strongly advised per datasheet guidance.
BZX8450-C3V0-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):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 800 nA @ 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-C3V0-QR FAQ
1.How can I place an order for BZX8450-C3V0-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C3V0-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-C3V0-QR reliable?
The price and inventory of BZX8450-C3V0-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-C3V0-QR is usually 5 days.
3.What payment methods are accepted for BZX8450-C3V0-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C3V0-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C3V0-QR?
BZX8450-C3V0-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C3V0-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-C3V0-QR?
For technical support, including BZX8450-C3V0-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C3V0-QR requirements.
6.How does Aetrix verify that BZX8450-C3V0-QR is sourced from the original manufacturer or authorized distributors?
All BZX8450-C3V0-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-C3V0-QR meets industry standards.
7.What is the process for return or replacement of BZX8450-C3V0-QR?
All BZX8450-C3V0-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C3V0-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-C3V0-QR part is unused and in its original packaging.
Return procedure for BZX8450-C3V0-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C3V0-QR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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