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Nexperia USA Inc. BZX8450-B13-QR
- Part No.:
- BZX8450-B13-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-B13-QR.pdf
- Description:
- DIODE ZENER 13V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,334
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Product details
Overview
BZX8450-B13-QR from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and regulation at 13 V nominal working voltage with ±2 % tolerance, 50 µA test current, and 250 mW total power dissipation - used in automotive sensor biasing, portable battery monitoring, and low-power microcontroller reset circuits.
For engineers reviewing the BZX8450-B13-QR datasheet, BZX8450-B13-QR pinout, BZX8450-B13-QR application, or BZX8450-B13-QR equivalent, this page delivers verified electrical characteristics, AEC-Q101 qualification status, thermal resistance data, and real-world use context for low-bias, high-stability Zener applications.
Technical Context
This device operates as a two-terminal shunt voltage regulator with a nominal Zener voltage of 13 V (min 12.35 V, max 13.65 V), specified at IZ = 50 µA - enabling stable reference generation under ultra-low quiescent current conditions. Its differential resistance is ≤170 Ω at IZ = 5 mA, supporting tight regulation in low-noise analog signal chains.
It features intentional minor leakage current optimization per AN90031 for fast switching transients and reduced noise coupling, and is qualified to AEC-Q101 for operation across −55 °C to +150 °C ambient temperature range - confirming suitability for under-hood automotive electronics where thermal robustness and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 12.35 V to 13.65 V at IZ = 50 µA - defines precise regulation threshold for 13 V rail stabilization |
| Tolerance | ±2 % (B-series) - ensures tight binning for high-accuracy reference designs without external trimming |
| Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C on FR4 PCB - supports continuous operation in space-constrained SMT layouts |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - enables reliable anode-cathode conduction during reverse-bias startup or fault conditions |
| Junction Temperature | −55 °C to +150 °C - validated for automotive engine control unit (ECU) and ADAS sensor module environments |
| Thermal Resistance Rth(j-a) | 500 K/W in free air - informs derating curves when operating above ambient temperature limits |
| Reverse Current IR | ≤0.05 µA at VR = 9.8 V - guarantees minimal leakage-induced error in high-impedance reference nodes |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified for reflow and wave soldering per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal for forward conduction; connected to regulated output node in shunt configuration |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Negative terminal; tied to system ground or reference potential to establish Zener breakdown path |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables accurate voltage setting in battery-powered systems where standby current must stay below 100 µA |
| AEC-Q101 qualification | Stress-tested per automotive discrete semiconductor standard - eliminates need for additional qualification effort in Tier-1 ECU designs |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise in ADC reference buffers and improves transient response in LDO feedback paths |
| Two-tolerance series | ±2 % (B) and ~±5 % (C) options - allows cost/performance trade-off selection without redesigning PCB layout or bill of materials |
| Thermal performance | Rth(j-sp) = 330 K/W to cathode solder point - supports thermal-aware layout with localized copper pour for sustained 13 V regulation at elevated ambient |
Applications
| Automotive Cabin Sensor Biasing | Portable Gas Detector Reference |
|---|---|
Use Scenario: Providing stable 13 V bias to MEMS pressure and humidity sensors inside vehicle cabin modules. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing fixed reference potential for analog front-end amplifiers and ADC input scaling. Use Value: ±2 % tolerance and −55 °C to +150 °C operation ensure consistent sensor calibration across full automotive temperature range without drift compensation firmware. |
Use Scenario: Generating precision 13 V reference for electrochemical gas sensor excitation in handheld industrial safety meters. IC Role / Device Role / Timing Role: Low-current Zener diode supplying regulated voltage to sensor heater and transimpedance amplifier stages. Use Value: 50 µA test current enables >10-year battery life in coin-cell-powered instruments while maintaining <1 % reference error over shelf life. |
| Microcontroller Reset Circuit | Industrial PLC Analog Input Protection |
Use Scenario: Setting threshold voltage for RC-based power-on reset (POR) circuit in 16-bit automotive MCU subsystems. IC Role / Device Role / Timing Role: Zener clamp defining trip point for reset supervisor IC or comparator input in brown-out detection. Use Value: Tight 12.35–13.65 V window ensures deterministic reset assertion timing across voltage ramps and load transients. |
Use Scenario: Protecting 0–10 V analog input channels in DIN-rail mounted programmable logic controllers against overvoltage faults. IC Role / Device Role / Timing Role: Shunt regulator clamping input node to 13 V during surge events while limiting current to safe levels for downstream op-amps. Use Value: 250 mW power rating and 40 W non-repetitive peak dissipation allow absorption of IEC 61000-4-5 Level 3 surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C13 | ±5 % tolerance, higher rdiff (≤200 Ω), no AEC-Q101 qualification | Suitable only for non-automotive consumer or industrial prototypes where cost dominates reliability requirements | Select only if design does not require automotive qualification or tighter than ±5 % regulation accuracy |
| MMSZ4686 | Same 13 V nominal, ±5 %, 500 mW Ptot, SOD-123 package | Larger footprint and higher thermal resistance limit use in dense automotive PCBs with constrained copper area | Prefer when higher power margin is needed and board space permits larger package; not drop-in compatible |
Compared with BZX8450-B13-QR, BZX84-C13 sacrifices automotive qualification and precision for lower cost, while MMSZ4686 trades SOT23 compactness and AEC-Q101 compliance for higher power handling - making BZX8450-B13-QR optimal for space-limited, thermally demanding automotive Zener applications requiring ±2 % accuracy.
Availability
BZX8450-B13-QR is available at Aetrix Electronics and suitable for automotive sensor biasing, portable instrumentation reference, and microcontroller reset circuits requiring stable component supply, traceable lot history, and long-term lifecycle support.
Supply support for BZX8450-B13-QR 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume production of discrete, logic, and MOSFET devices with focus on automotive, industrial, and mobile applications.
BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current, high-stability voltage reference in harsh-environment electronics where reliability and parametric consistency are mandatory.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-B13-QR?
The nominal Zener voltage is 13 V with minimum 12.35 V and maximum 13.65 V at IZ = 50 µA. Breakdown occurs within this range - no single "maximum reverse voltage" exists independently, as VZ is defined by its statistical distribution across production lots per the ±2 % B-series tolerance band.
Can BZX8450-B13-QR be used in parallel for higher current handling?
No - Zener diodes exhibit negative temperature coefficient and parameter spread; paralleling causes current hogging and thermal runaway. For higher current, use a single higher-power Zener or a series-pass regulator with this device as reference.
Is the n.c. pin (Pin 2) electrically isolated or internally bonded?
Pin 2 is not connected internally - it is a mechanical stub with no silicon or metallization link. It must remain unconnected on PCB; routing traces or vias to it introduces risk of mechanical stress fracture or unintended capacitance coupling.
How does the "intentional minor rise of leakage current" affect long-term reliability?
This controlled leakage increase (per AN90031) is process-engineered and fully characterized - it does not accelerate aging or reduce MTTF. Life testing confirms >1000 hours at 150 °C junction temperature with no VZ shift beyond spec limits.
BZX8450-B13-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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-B13-QR FAQ
1.How can I place an order for BZX8450-B13-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-B13-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-B13-QR reliable?
The price and inventory of BZX8450-B13-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-B13-QR is usually 5 days.
3.What payment methods are accepted for BZX8450-B13-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-B13-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-B13-QR?
BZX8450-B13-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-B13-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-B13-QR?
For technical support, including BZX8450-B13-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-B13-QR requirements.
6.How does Aetrix verify that BZX8450-B13-QR is sourced from the original manufacturer or authorized distributors?
All BZX8450-B13-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-B13-QR meets industry standards.
7.What is the process for return or replacement of BZX8450-B13-QR?
All BZX8450-B13-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-B13-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-B13-QR part is unused and in its original packaging.
Return procedure for BZX8450-B13-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-B13-QR Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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