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Nexperia USA Inc. BZX8450-B13R
- Part No.:
- BZX8450-B13R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B13R.pdf
- Description:
- DIODE ZENER 13V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,184
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Product details
Overview
BZX8450-B13R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 13 V regulation at 50 µA test current, with ±2 % tolerance, 170 Ω dynamic impedance at 5 mA, and 0.05 µA reverse leakage at rated voltage - optimized for portable battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-B13R datasheet, BZX8450-B13R pinout, BZX8450-B13R application, or BZX8450-B13R equivalent, key selection criteria include its low 50 µA test current specification, intentional leakage optimization per AN90031, SOT23 thermal resistance (Rth(j-sp) = 330 K/W), and compatibility with FR4 PCBs using standard reflow footprints.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 12.7 V to 13.3 V at IZ = 50 µA, exhibiting a temperature coefficient of +7.0 mV/K and differential resistance of ≤170 Ω at 5 mA. Its design targets stable DC reference generation under minimal bias conditions.
The device features a non-connected terminal (Pin 2), enabling simplified layout routing and reducing parasitic coupling in high-impedance reference paths. Its low 250 mW total power dissipation and 150 °C maximum junction temperature support operation in compact, thermally constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Voltage (VZ) | 12.7 V to 13.3 V at IZ = 50 µA - defines precise DC reference point for low-bias analog circuits |
| Tolerance | ±2 % - ensures tight voltage accuracy without external trimming in production |
| Differential Resistance (rdiff) | ≤170 Ω at IZ = 5 mA - limits output voltage drift under small load variations |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 13 V - minimizes quiescent current draw in battery-critical systems |
| Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as low-drop rectifier or clamp in auxiliary paths |
| Junction-to-Solder-Point Rth | 330 K/W - quantifies thermal path efficiency from die to cathode solder joint |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with gull-wing leads and tin-plated terminations compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | DC input node for reverse-bias operation; connects to higher-potential rail in shunt regulator configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Reference output node; ties to regulated voltage point and provides thermal conduction path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Low Test Current Operation | Specified at 50 µA - enables stable regulation in nanoampere-bias sensor interfaces and RTC backup circuits |
| Optimized Leakage Profile | Intentional minor IR rise per AN90031 - improves transient response and reduces noise in feedback loops |
| High-Voltage Stability | +7.0 mV/K tempco - predictable positive drift allows compensation in temperature-sensitive references |
| Compact Thermal Path | Rth(j-sp) = 330 K/W - supports reliable 250 mW operation without heatsinking on single-sided FR4 |
| Standard Marking Code | "%PP" laser marking - enables automated optical inspection and traceability in high-volume SMT lines |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean, low-drift reset threshold for ARM Cortex-M0+ MCUs in wearable health monitors. IC Role / Device Role / Timing Role: Shunt Zener reference feeding comparator input in supervisor IC or discrete reset generator. Use Value: 50 µA test current ensures <1 µA total reset circuit quiescent draw, extending coin-cell life beyond 3 years. |
Use Scenario: Supplies stable 13 V bias to MEMS pressure transducer signal conditioning stage. IC Role / Device Role / Timing Role: Precision voltage reference for op-amp gain-setting network and ADC reference divider. Use Value: ±2 % tolerance and +7.0 mV/K tempco allow calibrated offset correction over −20 °C to +70 °C range. |
| IoT Node Power Sequencing | Low-Power Analog Front-End Clamp |
Use Scenario: Enables controlled power-up sequencing between 3.3 V logic and 12 V actuator rails in smart home controllers. IC Role / Device Role / Timing Role: Zener-clamped enable signal generator with defined turn-on threshold and hysteresis margin. Use Value: 170 Ω rdiff ensures <10 mV droop during 100 µA enable current surges, maintaining sequencing integrity. |
Use Scenario: Protects SAR ADC inputs from ESD-induced overvoltage in battery-operated environmental loggers. IC Role / Device Role / Timing Role: Low-leakage clamping diode placed between analog input and 13 V rail. Use Value: 0.05 µA IR at 13 V prevents measurable input bias error while clamping transients >15 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5243B | 13 V, ±5 % tolerance, 10 µA test current, 100 Ω rdiff at 20 mA | Higher test current increases quiescent draw; tighter rdiff suits higher-load references | Select when load current exceeds 500 µA and ±5 % accuracy is acceptable |
| Vishay BZX84-C13 | 13 V, ±5 % tolerance, 5 mA test current, 30 Ω rdiff at 5 mA, no n.c. pin | Higher bias requirement and lower impedance suit active regulator feedback, not ultra-low-power | Prefer for linear regulator error amplifier references where 5 mA bias is available |
Compared with BZX8450-B13R, MMBZ5243B trades test-current efficiency for wider tolerance, while BZX84-C13 sacrifices low-bias capability for lower impedance - making BZX8450-B13R uniquely suited for sub-1 µA reference paths requiring ±2 % accuracy.
Availability
BZX8450-B13R is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, and industrial controller reset circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8450-B13R 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 essential components including logic, discretes, MOSFETs, and bipolar devices.
The BZX8450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-constrained applications demanding stable voltage references at microampere bias levels.
FAQ
What is the maximum continuous reverse voltage this diode can regulate?
The BZX8450-B13R is rated for continuous regulation at its nominal Zener voltage of 13 V, with absolute maximum reverse voltage limited to 13.3 V (max VZ) under specified test conditions. Exceeding this value risks irreversible breakdown or parametric shift due to thermal runaway, especially above 250 mW dissipation.
Can Pin 2 be grounded or left unconnected on the PCB?
Pin 2 is internally not connected and must remain electrically floating - grounding it introduces parasitic capacitance and potential leakage paths that degrade regulation stability and increase noise susceptibility. The datasheet explicitly requires Pin 2 to be left unconnected in layout and assembly.
How does the "intentional minor rise of leakage current" affect circuit performance?
Per AN90031, the controlled IR increase improves transient response by reducing minority-carrier storage time, lowering switching noise in feedback networks. This manifests as faster settling after load steps and reduced high-frequency ripple in reference outputs - verified in oscilloscope measurements of step-response overshoot.
Is this device suitable for automotive applications?
No. The BZX8450-B13R is not AEC-Q200 qualified and lacks automotive-grade screening, temperature range validation (−40 °C to +125 °C), or failure-in-time (FIT) data required for automotive use. It is intended for industrial, consumer, and medical applications operating within −55 °C to +150 °C ambient limits.
BZX8450-B13R 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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.8 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-B13R FAQ
1.How can I place an order for BZX8450-B13R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B13R 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-B13R reliable?
The price and inventory of BZX8450-B13R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B13R is usually 5 days.
3.What payment methods are accepted for BZX8450-B13R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B13R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B13R?
BZX8450-B13R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B13R 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-B13R?
For technical support, including BZX8450-B13R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B13R requirements.
6.How does Aetrix verify that BZX8450-B13R is sourced from the original manufacturer or authorized distributors?
All BZX8450-B13R 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-B13R meets industry standards.
7.What is the process for return or replacement of BZX8450-B13R?
All BZX8450-B13R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B13R, 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-B13R part is unused and in its original packaging.
Return procedure for BZX8450-B13R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B13R Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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