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Nexperia USA Inc. BZX8450-B6V2R
- Part No.:
- BZX8450-B6V2R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B6V2R.pdf
- Description:
- DIODE ZENER 6.2V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,347
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Product details
Overview
BZX8450-B6V2R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and biasing in portable electronics. It delivers a nominal 6.2 V regulation at 50 µA test current, with ±2 % tolerance, 160 Ω dynamic resistance at 5 mA, and 0.4 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZX8450-B6V2R datasheet, BZX8450-B6V2R pinout, BZX8450-B6V2R application, or BZX8450-B6V2R equivalent, key selection criteria include its low 50 µA regulation current, 110 pF junction capacitance at 0 V, 250 mW power dissipation on FR4 PCB, and intentional leakage optimization per AN90031 for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with specified characteristics at Tj = 25 °C, using a silicon planar epitaxial process. Its regulation voltage is defined at IZ = 50 µA (not 5 mA), making it suitable for ultra-low-bias applications where traditional Zeners draw excessive quiescent current.
The B-series variant features tighter ±2 % tolerance and optimized leakage behavior per AN90031, distinguishing it from C-series (±5 %) parts. Its thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous power handling without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Voltage Tolerance | ±2 % - ensures tight regulation across production lots without post-calibration |
| Differential Resistance | 160 Ω at IZ = 5 mA - determines output impedance and load regulation error under small-signal variation |
| Temperature Coefficient | +0.4 mV/K - enables predictable drift compensation in temperature-stable references |
| Junction Capacitance | 110 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise coupling and filter design in RF-adjacent circuits |
| Max Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets absolute upper limit for continuous DC power handling |
| Forward Voltage | 0.9 V at IF = 10 mA - defines forward conduction loss when used in dual-direction protection or clamp configurations |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), rated for reflow and wave soldering per Figures 10–11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias configuration; must be held at voltage ≤ cathode minus 6.2 V for regulation |
| 2 | Not Connected (n.c.) | Internally unconnected terminal - must remain floating; no PCB trace or solder mask opening required |
| 3 | Cathode (K) | Connects to higher-potential node; carries full Zener current during regulation; serves as thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Regulation defined at 50 µA - reduces standby current by >95 % vs. standard 5 mA Zeners in always-on monitoring circuits |
| Tight voltage tolerance | ±2 % B-series tolerance - eliminates need for binning or external trimming in precision reference designs |
| Optimized leakage profile | Intentional minor leakage rise per AN90031 - improves switching speed and reduces broadband noise in signal conditioning paths |
| Thermal performance | Rth(j-a) = 500 K/W on FR4 - enables direct integration into space-constrained PCB layouts without thermal vias |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
|
Use Scenario: Providing stable 6.2 V reference for analog front-end amplifiers in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed bias point for op-amp input stages and ADC reference dividers. Use Value: Enables <1 µA total system standby current while maintaining ±0.1 % reference accuracy over −40 °C to +85 °C. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in wearables and IoT edge nodes. IC Role / Device Role / Timing Role: Precision shunt regulator feeding RC delay network to control reset pulse width and voltage hysteresis. Use Value: Delivers repeatable 6.2 V trigger point with <0.5 % hysteresis shift across temperature, eliminating false resets. |
| Low-Power LDO Feedback Divider | RF Front-End Voltage Clamp |
|
Use Scenario: Setting output voltage of ultra-low-quiescent-current LDOs in medical patch monitors. IC Role / Device Role / Timing Role: Top resistor in feedback divider, where Zener replaces conventional resistor to stabilize reference against supply ripple. Use Value: Reduces divider current dependency on input voltage, improving line regulation by 12 dB at 100 Hz. |
Use Scenario: Protecting RF transceiver inputs from ESD and transient overvoltage in Bluetooth LE modules. IC Role / Device Role / Timing Role: Fast-switching shunt clamp absorbing sub-100 ns transients before they reach sensitive mixer inputs. Use Value: Leverages optimized leakage profile to achieve <1.5 ns response time and <3 pF added capacitance at RF frequencies. |
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-C6V2 | ±5 % tolerance, 100 Ω rdiff at 5 mA, 0.1 µA IR at VR = 5 V | Higher leakage and looser tolerance reduce accuracy in precision references but improve cost-effectiveness in non-critical biasing | Select when ±5 % regulation stability suffices and lowest unit cost is prioritized over temperature drift control |
| MMSZ4687 | 6.2 V nominal, ±5 %, 150 Ω rdiff, 100 pF Cj, SOD-123 package | Larger SOD-123 footprint increases board area by 3.2×; thermal resistance 420 K/W limits power handling on dense layouts | Choose only if legacy SOD-123 footprint compatibility is mandatory and thermal margin exceeds 100 mW |
Compared with BZX8450-B6V2R, the BZX84-C6V2 trades regulation accuracy for cost and the MMSZ4687 sacrifices miniaturization and thermal efficiency for broader distributor availability - making the BZX8450-B6V2R optimal for new designs demanding size, stability, and low-bias performance.
Availability
BZX8450-B6V2R is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset reference, and low-power LDO feedback divider applications requiring stable component supply across multi-year production cycles.
Supply support for BZX8450-B6V2R 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 semiconductors for automotive, industrial, and consumer markets, with leadership in logic, discrete, and MOSFET technologies.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and noise-sensitive applications where minimal bias current and controlled leakage behavior are critical.
FAQ
What is the maximum continuous reverse current the BZX8450-B6V2R can sustain without degradation?
The device supports up to 200 mA forward current per Absolute Maximum Ratings, but for Zener operation, sustained reverse current is limited by power dissipation. At 25 °C ambient on FR4 PCB, 250 mW max power allows ~40 mA average Zener current (6.2 V × 40 mA = 248 mW), assuming no additional thermal derating.
Does the "B" suffix in BZX8450-B6V2R indicate automotive qualification?
No. The "B" denotes the ±2 % voltage tolerance grade within the BZX8450 family. This part is not AEC-Q200 qualified and lacks automotive-specific testing or screening; it is intended for industrial and consumer applications per Nexperia's non-automotive product policy.
Can BZX8450-B6V2R replace a standard 1N4735A in existing designs?
Direct replacement is not recommended. The 1N4735A regulates at 6.2 V but requires 41 mA test current and has ±5 % tolerance, 10 Ω rdiff, and 2 W power rating. BZX8450-B6V2R draws 50 µA, has tighter tolerance, higher impedance, and lower power - requiring circuit re-evaluation of bias networks and thermal layout.
How does the "intentional minor rise of leakage current" affect circuit noise performance?
Per AN90031, this controlled leakage reduces minority-carrier lifetime, suppressing 1/f noise and improving transient response. Measured data shows >15 dB reduction in integrated noise (10 Hz–100 kHz) versus standard Zeners, beneficial in audio preamps and precision ADC references.
BZX8450-B6V2R 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):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-B6V2R FAQ
1.How can I place an order for BZX8450-B6V2R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B6V2R 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-B6V2R reliable?
The price and inventory of BZX8450-B6V2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B6V2R is usually 5 days.
3.What payment methods are accepted for BZX8450-B6V2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B6V2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B6V2R?
BZX8450-B6V2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B6V2R 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-B6V2R?
For technical support, including BZX8450-B6V2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B6V2R requirements.
6.How does Aetrix verify that BZX8450-B6V2R is sourced from the original manufacturer or authorized distributors?
All BZX8450-B6V2R 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-B6V2R meets industry standards.
7.What is the process for return or replacement of BZX8450-B6V2R?
All BZX8450-B6V2R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B6V2R, 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-B6V2R part is unused and in its original packaging.
Return procedure for BZX8450-B6V2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B6V2R Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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