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Nexperia USA Inc. BZX8450-C62R
- Part No.:
- BZX8450-C62R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C62R.pdf
- Description:
- DIODE ZENER 62V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,216
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Product details
Overview
BZX8450-C62R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and low-power biasing in portable electronics. It provides a nominal 62 V regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and 400 Ω differential resistance at IZ = 2 mA - enabling stable operation in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-C62R datasheet, BZX8450-C62R pinout, BZX8450-C62R application, or BZX8450-C62R equivalent, this page delivers verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and real-world use cases for low-current voltage stabilization in space-constrained designs.
Technical Context
This device operates as a reverse-biased Zener diode with a specified working voltage of 62 V (min 59.8 V, max 64.2 V) at IZ = 50 µA, exhibiting a temperature coefficient of +3.2 mV/K and reverse leakage current ≤0.05 µA at VR = 49.6 V. Its low test current enables minimal quiescent power draw in always-on monitoring circuits.
The BZX8450-C62R features intentional minor leakage optimization per AN90031, supporting fast switching transients and reduced noise in analog front-ends. Thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous power handling under natural convection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 59.8 V to 64.2 V at IZ = 50 µA - defines precise clamping threshold for overvoltage protection |
| Tolerance | ±5 % - ensures predictable regulation across production lots without trimming |
| Differential Resistance (rdiff) | 400 Ω at IZ = 2 mA - determines output impedance and load regulation error |
| Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum steady-state bias current limit (≈4 µA at 62 V) |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - confirms low-loss forward conduction for polarity-sensitive protection |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 49.6 V - guarantees negligible standby current in high-impedance reference paths |
| Thermal Resistance (Rth(j-a)) | 500 K/W - dictates derating curve: full power only below 25 °C ambient |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-bias path entry during regulation |
| 2 | Not Connected (n.c.) | Internally isolated; no electrical function - must remain unconnected on PCB |
| 3 | Cathode (K) | Connects to higher-potential node; primary current return path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables micropower reference generation in energy-harvesting systems |
| Optimized leakage profile | Minor intentional IR rise per AN90031 - improves transient response and reduces broadband noise |
| Stable temperature coefficient | +3.2 mV/K - minimizes drift over −55 °C to +150 °C operating range |
| High-voltage Zener capability | 62 V nominal - supports industrial I/O protection and programmable logic supply rail clamping |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuitry |
|---|---|
Use Scenario: Stabilizing reference voltage for 24 V industrial analog input modules exposed to EMI and supply ripple. IC Role / Device Role / Timing Role: Zener shunt regulator providing fixed 62 V clamp to protect ADC front-end op-amps from overvoltage events. Use Value: 400 Ω rdiff ensures <1 % output variation under 10 µA load shifts, maintaining measurement accuracy. | Use Scenario: Generating clean, low-drift reset threshold for ARM Cortex-M0+ MCUs in battery-backed IoT edge nodes. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input to trigger reset when VDD drops below 90 % nominal. Use Value: ±5 % tolerance and +3.2 mV/K TC allow deterministic reset point calibration across temperature without trimming. |
| Portable Medical Device Power Monitoring | Programmable Logic Supply Clamp |
Use Scenario: Monitoring lithium-ion battery pack voltage in wearable ECG monitors with ultra-low standby current budget. IC Role / Device Role / Timing Role: High-impedance voltage divider element enabling 62 V sensing with <0.1 µA total divider current. Use Value: ≤0.05 µA reverse leakage at 49.6 V ensures >10-year battery life in always-on monitoring mode. | Use Scenario: Clamping FPGA I/O bank supply rails during hot-swap insertion in modular test equipment. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing inductive kickback from relay drivers connected to same rail. Use Value: 40 W non-repetitive peak power rating (tp = 100 µs) prevents latch-up during 50 ns surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C62 | Same 62 V nominal, ±5 % tolerance, but rated at 300 mW Ptot and 250 Ω rdiff at 5 mA | Higher power handling suits higher-current bias networks; less suitable for sub-µA standby designs | Select when >10 µA regulation current is available and tighter dynamic impedance is required |
| MMBZ5257BS | 62 V nominal, ±5 %, but specified at 20 mA test current and 150 Ω rdiff; SOT-323 package | Lower rdiff improves load regulation but increases quiescent current by 400× | Prefer for active bias circuits where 1 mA Zener current is acceptable and board area permits SOT-323 |
Compared with BZX84-C62 and MMBZ5257BS, the BZX8450-C62R uniquely balances ultra-low test current (50 µA), moderate dynamic impedance (400 Ω), and SOT23 compatibility - making it optimal for micropower voltage references where leakage and footprint are critical constraints.
Availability
BZX8450-C62R is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuitry, portable medical device power monitoring, and programmable logic supply clamp applications requiring stable component supply and long-term obsolescence management.
Supply support for BZX8450-C62R 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 low-current Zener regulator product line, engineered specifically for micropower voltage reference and biasing in battery-operated and space-constrained systems.
FAQ
What is the maximum reverse voltage the BZX8450-C62R can withstand before breakdown?
The BZX8450-C62R has a nominal Zener voltage of 62 V, with guaranteed minimum and maximum values of 59.8 V and 64.2 V respectively at 50 µA test current. Its absolute maximum non-repetitive peak reverse voltage is defined by the 40 W surge rating at 100 µs pulse width - corresponding to ~632 V for a single event, but sustained operation must remain within the 62 V ±5 % regulation band.
Can BZX8450-C62R be used in series or parallel configurations for higher voltage or current handling?
No - the BZX8450-C62R is not characterized for series or parallel operation. Its ±5 % tolerance and mismatched temperature coefficients would cause uneven voltage sharing in series, while parallel connection risks thermal runaway due to positive TC and lack of current-sharing specifications. Use a single device per regulation node or select a higher-voltage Zener.
How does the "n.c." pin (Pin 2) affect PCB layout and thermal performance?
Pin 2 is internally unconnected and must remain floating on the PCB - no trace, pad, or copper pour should contact it. Leaving it unconnected avoids parasitic capacitance that could degrade high-frequency noise rejection. Its isolation also prevents unintended heat conduction paths, preserving the specified 500 K/W junction-to-ambient thermal resistance.
Is BZX8450-C62R suitable for automotive applications?
No - the BZX8450-C62R is not automotive-qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like this device are neither tested nor warranted for automotive use, including AEC-Q101 stress testing or temperature cycling across −40 °C to +125 °C. For automotive designs, select Nexperia's AEC-Q101 qualified Zener series instead.
BZX8450-C62R 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):
- 62 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 215 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 43.4 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-C62R FAQ
1.How can I place an order for BZX8450-C62R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C62R 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-C62R reliable?
The price and inventory of BZX8450-C62R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C62R is usually 5 days.
3.What payment methods are accepted for BZX8450-C62R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C62R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C62R?
BZX8450-C62R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C62R 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-C62R?
For technical support, including BZX8450-C62R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C62R requirements.
6.How does Aetrix verify that BZX8450-C62R is sourced from the original manufacturer or authorized distributors?
All BZX8450-C62R 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-C62R meets industry standards.
7.What is the process for return or replacement of BZX8450-C62R?
All BZX8450-C62R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C62R, 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-C62R part is unused and in its original packaging.
Return procedure for BZX8450-C62R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C62R Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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MMSZ4682T1G
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MM5Z5V1ST1G
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