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Nexperia USA Inc. BZX8850S-B2V2-QYL
- Part No.:
- BZX8850S-B2V2-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B2V2-QYL.pdf
- Description:
- DIODE ZENER 2.2V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:3,674
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Product details
Overview
BZX8850S-B2V2-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, battery-powered systems. It delivers a nominal 2.2 V regulation at 50 µA test current, with ±2 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B2V2-QYL datasheet, BZX8850S-B2V2-QYL pinout, BZX8850S-B2V2-QYL application, or BZX8850S-B2V2-QYL equivalent, this device is selected for low-leakage, low-power voltage stabilization in portable instrumentation, sensor signal conditioning, and automotive microcontroller supply rail monitoring where tight voltage accuracy and thermal reliability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 2.15 V to 2.25 V at IZ = 50 µA, exhibiting a differential resistance ≤600 Ω at 5 mA and a negative temperature coefficient of −3.5 mV/K. Its low 50 µA test current enables stable regulation under ultra-low bias conditions typical in sleep-mode circuits.
The device features side-wettable flanks for automated optical solder-joint inspection, qualified per AEC-Q101 for automotive ambient temperatures from −55 °C to +150 °C, and achieves 210 pF capacitance at 0 V reverse bias-critical for noise-sensitive analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V (min 2.15 V / max 2.25 V at 50 µA); ensures precise low-voltage reference for 2.5 V–3.3 V system rails |
| Tolerance | ±2 % (B-series); supports high-accuracy analog sensing without post-calibration trimming |
| Test Current | 50 µA; enables stable regulation in micropower applications such as RTC backup or wake-up circuitry |
| Total Power Dissipation | 365 mW at Tamb ≤ 25 °C on FR4 PCB; sufficient for continuous operation in compact automotive ECUs |
| Forward Voltage | ≤0.9 V at 10 mA; minimizes conduction loss when used in dual-direction clamping configurations |
| Junction Temperature Limit | 150 °C; supports under-hood deployment in engine control modules and body electronics |
| Reverse Leakage | ≤1.0 µA at VR = 1 V; reduces standby current drain in always-on subsystems |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), leadless surface-mount, 1.0 mm × 0.6 mm × 0.47 mm body with side-wettable flanks for AOI-compatible reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar on top surface identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | DFN1006BD-2 (1.0 × 0.6 mm) saves >70 % board area vs. SOD-323, enabling dense sensor module layouts |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD testing-no derating needed for under-hood use |
| Side-wettable flanks | Enables automated X-ray and optical inspection of solder joints without cross-sectioning, improving manufacturing yield |
| Low test current operation | Specified at 50 µA-compatible with nanoampere-level bias sources in IoT edge nodes and wearable health monitors |
| Controlled leakage profile | B-series devices maintain <1 µA IR at 1 V reverse bias, minimizing quiescent current in always-on regulators |
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 regulator providing stable 2.2 V bias to ADC reference input and sensor excitation circuitry. Use Value: ±2 % tolerance and −3.5 mV/K TC ensure <±10 mV drift over −40 °C to +125 °C, meeting ASIL-B signal integrity requirements. |
Use Scenario: Low-power voltage clamp for ECG front-end op-amp supply rails in battery-operated patient monitors. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting rail excursion during ESD transients while drawing <1 µA in standby. Use Value: 210 pF capacitance and 600 Ω dynamic impedance preserve signal bandwidth up to 100 kHz without phase distortion. |
| Industrial PLC I/O Modules | Smart Meter Battery Backup Circuits |
|
Use Scenario: Precision shunt reference for 4–20 mA loop transmitter calibration in factory automation controllers. IC Role / Device Role / Timing Role: Two-terminal voltage reference replacing bulkier TL431-based solutions in space-limited DIN-rail enclosures. Use Value: 365 mW power rating allows direct connection to 24 V loop supply via 10 kΩ series resistor, eliminating external heat sinking. |
Use Scenario: Voltage supervisor for real-time clock (RTC) backup domain powered by coin-cell batteries. IC Role / Device Role / Timing Role: Regulator maintaining 2.2 V supply to RTC IC during main power failure, with <500 nA self-discharge contribution. Use Value: 50 µA test current and sub-µA leakage extend CR2032 battery life beyond 10 years in meter firmware retention mode. |
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-C2V2 | ±5 % tolerance, SOT-23 package (2.9 × 1.3 mm), 350 mW Ptot, 5 mA test current | Larger footprint and looser tolerance limit use in high-accuracy sensor biasing | Select only if board space permits larger package and ±5 % regulation error is acceptable |
| MMSZ4678T1G | ±5 % tolerance, SOD-123 package (3.7 × 1.6 mm), 500 mW Ptot, 20 mA test current | Higher test current increases standby power; larger size incompatible with ultra-dense layouts | Prefer for higher-power industrial regulators where thermal margin exceeds 365 mW requirement |
Compared with BZX8850S-B2V2-QYL, BZX84-C2V2 offers lower cost but sacrifices accuracy and miniaturization, while MMSZ4678T1G provides greater power headroom at the expense of leakage current and PCB area-making the BZX8850S-B2V2-QYL optimal for AEC-Q101-compliant, space-constrained, low-IQ designs.
Availability
BZX8850S-B2V2-QYL is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8850S-B2V2-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 technologies.
The BZX8850S-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage regulation in automotive and portable electronics where miniaturization and thermal robustness are mandatory.
FAQ
What is the maximum reverse voltage this Zener can regulate without exceeding its power limit?
At ambient temperature ≤25 °C on standard FR4 PCB, the BZX8850S-B2V2-QYL sustains 365 mW total power dissipation. With a nominal Zener voltage of 2.2 V, the maximum safe continuous reverse current is 166 mA (365 mW ÷ 2.2 V). Exceeding this draws the device beyond its thermal design margin and risks junction overheating.
Does the side-wettable flank feature require special stencil or reflow profile adjustments?
No special stencil or reflow profile is required. The DFN1006BD-2 package uses standard 0.4 mm thick stencil apertures and follows IPC-J-STD-020D reflow guidelines for small-body leadless packages. Side-wettable flanks are compatible with standard SPI and AOI systems without process modification.
How does the −3.5 mV/K temperature coefficient affect regulation accuracy over temperature?
Over a −40 °C to +125 °C range (ΔT = 165 K), the voltage drift is −3.5 mV/K × 165 K = −578 mV. However, since the nominal Zener voltage is 2.2 V, this represents a −26 % relative shift-mitigated by the device's tight ±2 % initial tolerance and use in closed-loop or ratiometric systems where drift cancels out.
Can this Zener be used in forward conduction mode like a standard diode?
Yes-the BZX8850S-B2V2-QYL has a forward voltage ≤0.9 V at 10 mA, matching typical silicon diodes. It is routinely used bidirectionally: reverse-biased for regulation/clamping and forward-biased for polarity protection or level-shifting, with no degradation in Zener performance after repeated forward conduction.
BZX8850S-B2V2-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):
- 2.2 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 1 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-B2V2-QYL FAQ
1.How can I place an order for BZX8850S-B2V2-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B2V2-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-B2V2-QYL reliable?
The price and inventory of BZX8850S-B2V2-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-B2V2-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B2V2-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B2V2-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B2V2-QYL?
BZX8850S-B2V2-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B2V2-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-B2V2-QYL?
For technical support, including BZX8850S-B2V2-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B2V2-QYL requirements.
6.How does Aetrix verify that BZX8850S-B2V2-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B2V2-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-B2V2-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B2V2-QYL?
All BZX8850S-B2V2-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B2V2-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-B2V2-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B2V2-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B2V2-QYL Tags
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