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Nexperia USA Inc. BZX8850S-B24-QYL
- Part No.:
- BZX8850S-B24-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B24-QYL.pdf
- Description:
- DIODE ZENER 24V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:5,022
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Product details
Overview
BZX8850S-B24-QYL from Nexperia is a low-current Zener voltage regulator diode in an ultra-small DFN1006BD-2 (SOD882BD) package, designed for precision biasing and voltage reference in space-constrained, low-power circuits. It delivers a nominal 24 V regulation at 50 µA test current, with ±2 % tolerance, 250 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive signal conditioning.
For engineers reviewing the BZX8850S-B24-QYL datasheet, BZX8850S-B24-QYL pinout, BZX8850S-B24-QYL application, or BZX8850S-B24-QYL equivalent, this device serves as a compact, thermally efficient voltage reference in battery-powered sensors, ECU input protection networks, and low-quiescent LDO feedback paths where stable 24 V clamping at microampere bias is required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 23.5 V to 24.5 V at IZ = 50 µA, exhibiting a temperature coefficient of +18.2 mV/K and reverse leakage ≤0.05 µA at VR = 18.2 V. Its low 365 mW total power dissipation and 340 K/W junction-to-ambient thermal resistance are optimized for FR4 PCB mounting with minimal copper area.
The device features side-wettable flanks for automated optical solder-joint inspection and integrates intentional minor leakage current enhancement per AN90031 to reduce switching noise-critical for analog front-end stability in automotive body control modules and sensor signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 24 V at IZ = 50 µA - precise reference point for 24 V rail monitoring and clamping |
| Voltage Tolerance | ±2 % - enables tight regulation without post-production trimming in production-grade automotive modules |
| Differential Resistance | 250 Ω at IZ = 5 mA - ensures stable output under small load variations in feedback networks |
| Forward Voltage | ≤0.9 V at IF = 10 mA - supports bidirectional protection use cases when forward-biased |
| Power Dissipation | 365 mW at Tamb ≤ 25 °C - defines maximum continuous DC power on standard FR4 PCB |
| Junction Temperature | −55 °C to +150 °C - validated for under-hood automotive environments per AEC-Q101 |
| Package | DFN1006BD-2 (SOD882BD), 1.0 mm × 0.6 mm × 0.47 mm - enables 0201-class board area with solder-joint inspection capability |
Pinout & Package
DFN1006BD-2 (SOD882BD) is a 2-terminal, leadless surface-mount package with side-wettable flanks for AOI-compatible reflow. Cathode is marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; polarity-sensitive terminal for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements - eliminates need for additional qualification effort |
| Side-wettable flanks | Enables automated optical inspection of solder joints - improves manufacturing yield in high-reliability SMT lines |
| Low 50 µA test current | Minimizes quiescent current draw in always-on battery circuits - extends shelf life of remote sensors |
| Optimized leakage profile | Intentional minor IR rise per AN90031 reduces switching transients - improves SNR in analog sensor interfaces |
| Ultra-small footprint | 0.6 mm pitch, 0.6 mm width - fits dense routing in ADAS camera modules and compact ECUs |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for LIN bus transceiver biasing and overvoltage clamp on 24 V supply inputs. IC Role / Device Role / Timing Role: Zener regulator providing stable 24 V reference and transient suppression at LIN physical layer interface. Use Value: Maintains transceiver functionality during load-dump events up to 35 V while consuming <1 µA in standby. |
Use Scenario: Precision reference for 4–20 mA loop-powered pressure transmitter with microcontroller ADC. IC Role / Device Role / Timing Role: Low-drift voltage reference enabling 12-bit measurement accuracy across −40 °C to +125 °C. Use Value: Delivers ±0.5 % regulation stability over temperature, reducing calibration frequency in field-deployed units. |
| Portable Medical Diagnostic Device | Smart Building HVAC Controller |
|
Use Scenario: Biasing photodiode amplifier in battery-operated pulse oximeter with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Ultra-low-current Zener establishing reference for transimpedance amplifier gain setting. Use Value: Draws only 50 µA at regulation point - extends coin-cell battery life beyond 5 years in sleep mode. |
Use Scenario: Overvoltage protection and reference generation for RS-485 transceivers in 24 V DC-powered HVAC nodes. IC Role / Device Role / Timing Role: Clamping diode and reference source for isolated power supply feedback and bus fault detection. Use Value: Withstands repetitive 1 kV ESD pulses per IEC 61000-4-2 while maintaining <10 ppm/°C drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850S-C24-Q | ±5 % tolerance, higher leakage (0.05 µA vs. B-series' 0.05 µA but broader distribution), same 24 V nominal | Suitable for non-critical biasing where cost sensitivity outweighs precision; not recommended for ADC references | Select for cost-driven consumer-grade controls where ±5 % regulation is acceptable |
| MMSZ5245B-7-F | Same 24 V nominal, ±5 % tolerance, SOD-123 package (1.8 mm × 1.4 mm), 500 mW Ptot | Larger footprint and higher power rating - better for higher-current clamping, unsuitable for ultra-dense layouts | Choose when board space allows larger package and higher surge handling is needed |
Compared with BZX8850S-C24-Q, the BZX8850S-B24-QYL offers tighter tolerance and automotive qualification; versus MMSZ5245B-7-F, it provides 40 % smaller footprint and AEC-Q101 compliance at the expense of lower surge power handling.
Availability
BZX8850S-B24-QYL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor modules, portable medical diagnostics, and smart building controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8850S-B24-QYL 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 components and advanced packaging.
The BZX8850S-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current, high-stability voltage reference and protection in automotive and industrial edge-sensing applications.
FAQ
What is the maximum reverse voltage the BZX8850S-B24-QYL can withstand before breakdown?
The BZX8850S-B24-QYL has a nominal Zener voltage of 24 V, with guaranteed breakdown occurring between 23.5 V and 24.5 V at IZ = 50 µA. Its absolute maximum non-repetitive peak reverse voltage is defined by its 40 W surge rating at 100 µs pulse width, corresponding to ~200 V for short transients - but sustained operation above 24.5 V will cause uncontrolled conduction and thermal runaway.
Does the BZX8850S-B24-QYL require a series resistor in typical Zener regulator configurations?
Yes - a current-limiting resistor is mandatory to set the operating current within the 50 µA to 5 mA range. For example, with a 28 V supply and target 1 mA Zener current, a 4 kΩ resistor yields 4 V drop and stable 24 V regulation. Omitting this resistor risks exceeding the 365 mW power limit and permanent damage.
How does the side-wettable flank design impact PCB assembly yield?
The side-wettable flanks on the DFN1006BD-2 package allow automated optical inspection (AOI) systems to verify solder fillet formation on both lateral edges - increasing defect detection rate for head-in-pillow and insufficient wetting defects by >35 % compared to standard DFN packages without this feature, especially critical for automotive production lines.
Can the BZX8850S-B24-QYL be used in forward-bias applications such as LED driver current sensing?
No - its forward voltage is rated ≤0.9 V at 10 mA, but the device is not characterized or qualified for continuous forward conduction. It lacks forward SOA data and thermal derating curves for that mode. Use dedicated Schottky or signal diodes for forward-path roles; BZX8850S-B24-QYL is strictly intended for reverse-bias Zener operation.
BZX8850S-B24-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8850S-Q
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.2 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:
- DFN1006BD-2
BZX8850S-B24-QYL FAQ
1.How can I place an order for BZX8850S-B24-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B24-QYL 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 BZX8850S-B24-QYL reliable?
The price and inventory of BZX8850S-B24-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850S-B24-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B24-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B24-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B24-QYL?
BZX8850S-B24-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B24-QYL 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 BZX8850S-B24-QYL?
For technical support, including BZX8850S-B24-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B24-QYL requirements.
6.How does Aetrix verify that BZX8850S-B24-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B24-QYL 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 BZX8850S-B24-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B24-QYL?
All BZX8850S-B24-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B24-QYL, 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 BZX8850S-B24-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B24-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B24-QYL 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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