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Nexperia USA Inc. BZX8450-C36-QVL
- Part No.:
- BZX8450-C36-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C36-QVL.pdf
- Description:
- DIODE ZENER 36V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,984
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Product details
Overview
BZX8450-C36-Q from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, rated for 36 V nominal working voltage (±5 % tolerance), 250 mW total power dissipation, and specified at 50 µA test current - optimized for low-bias regulation in automotive sensor interfaces and portable battery-powered systems.
For engineers reviewing the BZX8450-C36-Q datasheet, BZX8450-C36-Q pinout, BZX8450-C36-Q application, or BZX8450-C36-Q equivalent, key selection criteria include its AEC-Q101 qualification, 350 Ω differential resistance at 5 mA, −0.05 µA reverse current at VR = 30.6 V, and intentional leakage tuning for noise reduction in precision analog rails.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under low-current conditions (IZ = 50 µA to 5 mA). Its temperature coefficient of +0.05 mV/K near 36 V ensures minimal drift across −55 °C to +150 °C ambient range.
The device features intentionally elevated leakage current versus standard B-series variants (per AN90031), enabling faster transient response and reduced high-frequency noise in feedback paths of LDOs and ADC references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 36 V ±5 % - defines regulated output level for biasing and reference circuits |
| Differential Resistance | 350 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Current | ≤ 0.05 µA at VR = 30.6 V - enables ultra-low quiescent current operation |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - supports polarity protection and clamping in dual-rail designs |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on FR4 PCB |
| Junction Temperature | −55 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test qualification |
Pinout & Package
SOT23 plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, single-sided FR4 mounting with tin-plated copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-biased Zener configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or thermal pad |
| 3 | Cathode (K) | Connects to higher-potential node; primary heat path via solder point (Rth(j-sp) = 330 K/W) |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables use in microamp-level bias networks without loading |
| Optimized leakage profile | Intentional minor rise vs. B-series - improves switching speed and reduces broadband noise |
| Automotive qualification | AEC-Q101 compliant - qualified for engine control, ADAS sensors, and infotainment power rails |
| Thermal performance | Rth(j-a) = 500 K/W in free air - supports compact layout without forced cooling |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Voltage reference for MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Zener shunt regulator providing stable 3.3 V rail derived from 5 V supply via resistor divider. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; low 50 µA test current avoids loading sensor IC's internal LDO. |
Use Scenario: Precision biasing of ECG front-end op-amps in battery-powered wearable monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing gain-setting resistors and ADC reference inputs. Use Value: Intentional leakage tuning reduces 1/f noise in analog signal chain; 350 Ω rdiff maintains accuracy under varying load currents. |
| Industrial IoT Edge Nodes | Smart Meter Power Management |
Use Scenario: Reference stabilization for LoRaWAN transceiver power sequencing in remote utility meters. IC Role / Device Role / Timing Role: Shunt regulator maintaining clean 2.5 V reference during RF burst transmission events. Use Value: Fast transient response from tuned leakage minimizes voltage sag during 100 mA peak current draws; SOT23 footprint saves board space. |
Use Scenario: Overvoltage clamp and reference source in polyphase electricity meter auxiliary power supplies. IC Role / Device Role / Timing Role: Dual-function device acting as both input surge protector (via Zener breakdown) and precision bandgap reference. Use Value: 36 V rating matches 33 V nominal AC-DC converter outputs; 250 mW rating handles sustained 10 mA bias without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C36 | Non-AEC-Q101; ±5 % tolerance; same 36 V nominal, but no intentional leakage tuning | Lacks automotive qualification and fast-switching noise optimization | Select only for cost-sensitive industrial or consumer designs where AEC-Q101 and low-noise operation are not required |
| MMSZ5241B | ±5 % tolerance; 36 V nominal; 500 mW Ptot; higher rdiff (700 Ω at 5 mA); no AEC-Q101 | Higher power rating but poorer regulation accuracy and no automotive qualification | Use when higher continuous power handling is needed, but avoid in noise-critical or automotive contexts |
Compared with BZX8450-C36-Q, BZX84-C36 lacks AEC-Q101 validation and leakage tuning, while MMSZ5241B trades regulation precision and noise performance for higher power - making the BZX8450-C36-Q uniquely suited for automotive and low-noise portable analog systems.
Availability
BZX8450-C36-Q is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8450-C36-Q 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 delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
The BZX8450-Q series belongs to Nexperia's automotive-qualified Zener regulator portfolio, designed specifically for low-current, low-noise voltage reference and regulation in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX8450-C36-Q has a nominal Zener voltage of 36 V with ±5 % tolerance, meaning its guaranteed breakdown range is 34.2 V to 37.8 V at IZ = 50 µA. Absolute maximum non-repetitive peak reverse voltage is not specified; operation above 37.8 V risks uncontrolled conduction and thermal runaway unless current-limited.
Can this Zener diode be used in forward-bias mode as a regular rectifier?
No - the BZX8450-C36-Q is optimized for reverse-bias Zener operation. Its forward voltage is ≤ 0.9 V at 10 mA, but it lacks the surge current rating, soft recovery, or low VF consistency required for rectification. Use dedicated Schottky or general-purpose diodes instead.
How does the "intentional minor rise of leakage current" affect circuit stability?
This controlled leakage (per AN90031) reduces junction capacitance modulation during transients, lowering high-frequency noise and improving settling time in feedback loops. It does not compromise DC regulation accuracy - reverse current remains ≤ 0.05 µA at VR = 30.6 V.
Is thermal derating required when operating above 25 °C ambient?
Yes - total power dissipation must be linearly derated above Tamb = 25 °C using Rth(j-a) = 500 K/W. For example, at 85 °C ambient, maximum allowable Ptot drops to 150 mW to keep Tj ≤ 150 °C. Mounting on FR4 with standard footprint is assumed; copper area increases require recalculating thermal resistance.
BZX8450-C36-QVL 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:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27.3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C36-QVL FAQ
1.How can I place an order for BZX8450-C36-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C36-QVL 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-C36-QVL reliable?
The price and inventory of BZX8450-C36-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C36-QVL is usually 5 days.
3.What payment methods are accepted for BZX8450-C36-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C36-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C36-QVL?
BZX8450-C36-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C36-QVL 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-C36-QVL?
For technical support, including BZX8450-C36-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C36-QVL requirements.
6.How does Aetrix verify that BZX8450-C36-QVL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C36-QVL 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-C36-QVL meets industry standards.
7.What is the process for return or replacement of BZX8450-C36-QVL?
All BZX8450-C36-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C36-QVL, 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-C36-QVL part is unused and in its original packaging.
Return procedure for BZX8450-C36-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C36-QVL 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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MMSZ4682T1G
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
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SMAZ12-13-F
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