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Nexperia USA Inc. BZX8450-B15R
- Part No.:
- BZX8450-B15R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B15R.pdf
- Description:
- DIODE ZENER 15V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,278
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Product details
Overview
BZX8450-B15R 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 15 V regulation at 50 µA test current, with ±2 % tolerance, 200 mW total power dissipation, and 11.4 Ω differential resistance at 5 mA - enabling stable operation in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZX8450-B15R datasheet, BZX8450-B15R pinout, BZX8450-B15R application, or BZX8450-B15R equivalent, this page provides verified electrical characteristics, thermal behavior, SOT23 terminal mapping, and real-world use cases for low-bias voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 14.7 V to 15.3 V at IZ = 50 µA, exhibiting a temperature coefficient of +9.2 mV/K and reverse leakage ≤ 0.05 µA at 11.4 V. Its low 500 K/W junction-to-ambient thermal resistance reflects SOT23 mounting on standard FR4 PCB.
The device features intentional minor leakage rise per AN90031 to reduce noise and improve switching speed, distinguishing it from standard Zeners. Its 0.9 V forward voltage at 10 mA supports bidirectional circuit verification and ESD-safe handling during board-level testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 15 V (14.7–15.3 V range at 50 µA; enables precise low-current reference) |
| Tolerance | ±2 % (B-series grade; ensures tight voltage matching across production lots) |
| Differential Resistance | 200 Ω max at 50 µA; 11.4 Ω typical at 5 mA (low dynamic impedance improves regulation stability under load variation) |
| Power Dissipation | 250 mW max at Tamb ≤ 25 °C (supports continuous operation in compact, unheatsinked layouts) |
| Forward Voltage | 0.9 V max at 10 mA (facilitates functional continuity testing without damaging the junction) |
| Reverse Leakage | ≤ 0.05 µA at 11.4 V (minimizes quiescent current drain in always-on monitoring circuits) |
| Thermal Resistance | 500 K/W junction-to-ambient (defines safe derating curve for ambient temperatures up to +150 °C) |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided FR4 PCB mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased during regulation; must be held at potential ≤ cathode minus VZ |
| 2 | Not Connected (n.c.) | Internally isolated; no electrical function; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode (K) | Connects to higher-potential node; defines regulated output reference point; solder point serves as primary thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables direct use in microamp-level bias networks without external amplification |
| Optimized noise performance | Intentional minor leakage rise per AN90031 reduces broadband noise for analog sensor front-ends |
| Stable temperature coefficient | +9.2 mV/K - predictable drift behavior simplifies compensation in wide-temperature industrial environments |
| High-reliability SOT23 packaging | Qualified per JEDEC standards; supports reflow and wave soldering with defined footprint (Fig. 10/11) |
| Low capacitance | 75 pF at 0 V - preserves high-frequency signal integrity in RF detector or timing reference applications |
Applications
| Portable Gas Sensor Biasing | IoT Node Reference Supply |
|---|---|
Use Scenario: Powering electrochemical gas sensor elements requiring stable 15 V bias in coin-cell-powered handheld detectors. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed reverse-bias potential to sensor electrodes. Use Value: ±2 % tolerance and 0.05 µA leakage ensure <1 ppm/h drift over 10-year shelf life while minimizing battery load. |
Use Scenario: Generating local 15 V reference for ADC input scaling in NB-IoT endpoint modules operating on Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known voltage rail for analog front-end calibration. Use Value: 50 µA test current matches typical sleep-mode MCU supply current, eliminating need for active regulation circuitry. |
| Industrial Thermocouple Cold-Junction Compensation | Medical Wearable Signal Conditioning |
Use Scenario: Providing stable 15 V reference for op-amp-based cold-junction compensation circuits in DIN-rail temperature transmitters. IC Role / Device Role / Timing Role: Low-drift voltage reference source for offset correction in thermocouple linearization stages. Use Value: +9.2 mV/K temperature coefficient allows predictable, linear compensation across −40 °C to +85 °C operating range. |
Use Scenario: Supplying regulated bias to photodiode transimpedance amplifiers in pulse oximeter analog front-ends. IC Role / Device Role / Timing Role: Low-noise shunt reference stabilizing amplifier gain-setting network. Use Value: Optimized leakage profile per AN90031 suppresses 1/f noise, improving SNR in sub-µV physiological signal detection. |
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-C15 | ±5 % tolerance; 150 Ω rdiff at 5 mA; +10.4 mV/K tempco | Higher initial error and drift; suitable only where cost sensitivity outweighs accuracy requirements | Select when budget constraints dominate and system calibration compensates for wider tolerance |
| MMSZ5245B | ±5 % tolerance; 17 Ω rdiff at 20 mA; 500 mW Ptot; SOD-123 package | Higher power rating but larger footprint; requires ≥20 mA test current for spec compliance | Choose only if higher current drive or thermal margin is needed and SOD-123 layout is acceptable |
Compared with BZX84-C15 and MMSZ5245B, the BZX8450-B15R uniquely balances ±2 % accuracy, ultra-low 50 µA test current, and SOT23 size - making it the sole option for space-constrained, battery-limited systems demanding both precision and minimal quiescent draw.
Availability
BZX8450-B15R is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, IoT edge nodes, and battery-backed instrumentation requiring stable component supply with guaranteed long-term traceability.
Supply support for BZX8450-B15R 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 precision Zener portfolio, engineered specifically for low-current voltage reference and biasing in energy-sensitive applications - not general-purpose regulation.
FAQ
What is the maximum reverse voltage the BZX8450-B15R can withstand before breakdown?
The BZX8450-B15R has a nominal Zener voltage of 15 V, with a guaranteed breakdown range of 14.7 V to 15.3 V at 50 µA test current. Its absolute maximum non-repetitive peak reverse voltage is limited by the 40 W surge rating at 100 µs pulse width - not a fixed DC voltage threshold. Continuous operation above 15.3 V risks thermal runaway due to rising power dissipation.
Can BZX8450-B15R be used in series or parallel configurations?
Series connection is permissible for higher reference voltages, provided current-limiting resistors are sized to maintain ≥50 µA through each device. Parallel use is strongly discouraged - mismatched Zener voltages cause current hogging, leading to thermal instability and premature failure. No derating guidance is published for parallel operation.
Does the 'R' suffix in BZX8450-B15R indicate RoHS compliance?
Yes. The 'R' suffix denotes lead-free, RoHS-compliant construction per Nexperia's standard product marking convention. This part meets EU Directive 2011/65/EU and is halogen-free, with full material declarations available via Nexperia's Product Change Notification (PCN) system.
How does the 'n.c.' pin affect PCB layout and thermal performance?
Pin 2 is internally unconnected and must remain unattached on the PCB. Routing traces or copper pours to it introduces parasitic capacitance and risk of contamination-induced leakage. Thermal performance relies solely on pins 1 (anode) and 3 (cathode); the cathode tab (pin 3) provides the dominant thermal path to the PCB, with Rth(j-sp) = 330 K/W measured at that point.
BZX8450-B15R 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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 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-B15R FAQ
1.How can I place an order for BZX8450-B15R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B15R 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-B15R reliable?
The price and inventory of BZX8450-B15R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-B15R is usually 5 days.
3.What payment methods are accepted for BZX8450-B15R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B15R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B15R?
BZX8450-B15R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B15R 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-B15R?
For technical support, including BZX8450-B15R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B15R requirements.
6.How does Aetrix verify that BZX8450-B15R is sourced from the original manufacturer or authorized distributors?
All BZX8450-B15R 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-B15R meets industry standards.
7.What is the process for return or replacement of BZX8450-B15R?
All BZX8450-B15R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B15R, 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-B15R part is unused and in its original packaging.
Return procedure for BZX8450-B15R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B15R 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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