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Nexperia USA Inc. BZX8850S-B11-QYL
- Part No.:
- BZX8850S-B11-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B11-QYL.pdf
- Description:
- DIODE ZENER 11V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:7,175
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Product details
Overview
BZX8850S-B11-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 automotive and portable electronics. It delivers a nominal 11 V regulation at 50 µA test current, with ±2 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the BZX8850S-B11-QYL datasheet, BZX8850S-B11-QYL pinout, BZX8850S-B11-QYL application, or BZX8850S-B11-QYL equivalent, key selection criteria include its low-leakage optimized switching behavior, side-wettable flanks for automated optical inspection, 11 V nominal Zener voltage with tight 10.8–11.2 V range, and thermal resistance of 340 K/W on FR4 PCB.
Technical Context
This device operates as a two-terminal shunt voltage regulator, conducting in reverse breakdown to maintain stable voltage across load circuits. Its specified Zener voltage is measured at IZ = 50 µA - enabling ultra-low quiescent current operation ideal for battery-backed sensors and always-on monitoring nodes.
The BZX8850S-B11-QYL features intentional minor leakage rise per AN90031 to reduce noise and improve transient response during fast switching events. Its junction temperature rating of 150 °C and AEC-Q101 qualification confirm suitability for automotive ambient conditions up to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 10.8–11.2 V at IZ = 50 µA - ensures precise 11 V reference with ±2 % tolerance for analog sensing and MCU supply monitoring |
| Differential Resistance rdiff | ≤150 Ω at IZ = 5 mA - maintains regulation stability under small load variations in low-power rails |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - enables use as polarity protection or clamping diode without excessive forward drop |
| Total Power Dissipation Ptot | 365 mW at Tamb ≤ 25 °C on standard FR4 - defines maximum continuous power handling in typical PCB layouts |
| Junction-to-Ambient Rth(j-a) | 340 K/W - quantifies thermal performance on single-sided copper PCB, critical for derating in high-temp enclosures |
| Reverse Current IR | ≤0.05 µA at VR = 8.4 V - confirms low leakage below knee voltage, essential for standby power integrity |
| Temperature Coefficient SZ | +5.4 mV/K - indicates positive drift with temperature, enabling predictable compensation in reference circuits |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount plastic package with side-wettable flanks (SWF), 1.0 mm × 0.6 mm × 0.47 mm body, 0.65 mm pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | DFN1006BD-2 (1.0 × 0.6 mm) enables placement in dense automotive ECUs and wearables where board area is constrained |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per discrete semiconductor stress test standard |
| Low-test-current specification | Rated at 50 µA - supports energy harvesting and coin-cell-powered systems requiring sub-100 µA bias currents |
| Side-wettable flanks | Facilitates automated optical inspection (AOI) of solder joints during reflow, improving yield in high-volume SMT lines |
| Optimized leakage profile | Intentional minor leakage rise per AN90031 reduces switching noise and improves transient suppression in signal conditioning paths |
Applications
| Automotive Cabin Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Voltage reference for analog front-end of seat occupancy or cabin air quality sensors in vehicles. IC Role / Device Role / Timing Role: Shunt regulator providing stable 11 V reference to ADC input stage and op-amp bias networks. Use Value: Tight ±2 % tolerance and low 50 µA test current ensure accurate sensor scaling while minimizing battery drain in always-on modules. | Use Scenario: Biasing reference for ECG/SpO₂ analog signal chains in handheld patient monitors. IC Role / Device Role / Timing Role: Precision Zener source for rail-splitting and offset calibration in low-noise instrumentation amplifiers. Use Value: Optimized leakage behavior reduces switching-induced noise, preserving microvolt-level signal integrity in biopotential measurements. |
| Industrial IoT Edge Nodes | Smart Meter Power Management |
Use Scenario: Regulation of auxiliary supply for LoRaWAN transceiver bias in battery-operated field sensors. IC Role / Device Role / Timing Role: Low-quiescent shunt regulator maintaining clean 11 V rail during RF burst transmission. Use Value: 340 K/W thermal resistance and 150 °C junction rating allow reliable operation inside sealed outdoor enclosures up to +85 °C ambient. | Use Scenario: Reference voltage generation for metrology ADCs and real-time clock backup in electricity meters. IC Role / Device Role / Timing Role: Stable Zener source for precision voltage scaling and tamper-detection threshold setting. Use Value: +5.4 mV/K temperature coefficient enables predictable drift compensation in wide-temperature meter deployments. |
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-C11-Q | ±5 % tolerance (10.45–11.55 V), higher max IR (0.1 µA), same package and AEC-Q101 qualification | Suitable for non-critical biasing where tighter regulation is not required | Select when cost sensitivity outweighs voltage accuracy needs in non-safety-critical subsystems |
| MMSZ5240B-TP | 10 V nominal, ±5 %, SOD-123 package (larger), 500 mW Ptot, no AEC-Q101 | General-purpose industrial use only; lacks automotive qualification and side-wettable flanks | Choose only for non-automotive designs where board space and AOI capability are not constraints |
Compared with BZX8850S-C11-Q, the BZX8850S-B11-QYL offers tighter voltage control and lower leakage for precision analog functions; versus MMSZ5240B-TP, it provides superior thermal performance in miniaturized layouts and guaranteed automotive reliability - making it the sole choice for space-limited AEC-Q101-compliant designs.
Availability
BZX8850S-B11-QYL is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, industrial IoT edge nodes, and smart meter power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8850S-B11-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade robustness.
The BZX8850S-Q series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for precision voltage referencing in space-constrained, low-power, and automotive-qualified applications.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX8850S-B11-QYL is rated for a nominal Zener voltage of 11 V with a guaranteed range of 10.8–11.2 V at 50 µA. Its absolute maximum non-repetitive peak reverse voltage is defined by the 40 W surge rating at 100 µs pulse width, but steady-state operation must remain within the 11 V regulation band. Exceeding 11.2 V continuously risks thermal runaway due to its 365 mW power limit.
Does this part support automated optical inspection (AOI) during PCB assembly?
Yes - the DFN1006BD-2 package features side-wettable flanks (SWF), allowing solder joint inspection via AOI systems. This design enables reliable detection of insufficient solder, bridging, or misalignment during high-volume SMT manufacturing, directly supporting IPC-A-610 Class 2 and Class 3 compliance for automotive electronics.
How does the "intentional minor rise of leakage current" affect circuit performance?
Per AN90031, the controlled increase in leakage improves dynamic response and reduces high-frequency noise during switching transitions. In practice, this yields faster stabilization after load transients and lower RMS noise in reference rails - verified in applications like ADC biasing and RF front-end regulation where signal integrity is critical.
Can this Zener diode be used in series or parallel configurations for higher voltage or current handling?
No - the BZX8850S-B11-QYL is not characterized for series or parallel operation. Its tight ±2 % tolerance and process-matched leakage behavior are optimized for single-device use. Parallel connection risks current imbalance due to VZ mismatch; series stacking introduces cumulative tolerance and thermal coupling issues. For higher voltage, select the appropriate single-device variant (e.g., BZX8850S-B12-Q).
BZX8850S-B11-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):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 8.4 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-B11-QYL FAQ
1.How can I place an order for BZX8850S-B11-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B11-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-B11-QYL reliable?
The price and inventory of BZX8850S-B11-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-B11-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B11-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B11-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B11-QYL?
BZX8850S-B11-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B11-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-B11-QYL?
For technical support, including BZX8850S-B11-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B11-QYL requirements.
6.How does Aetrix verify that BZX8850S-B11-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B11-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-B11-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B11-QYL?
All BZX8850S-B11-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B11-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-B11-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B11-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B11-QYL Tags
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Diodes Incorporated
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MMSZ5231B-7-F
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onsemi
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MMSZ5245BS-7-F
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