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Nexperia USA Inc. BZX8850S-B22-QYL
- Part No.:
- BZX8850S-B22-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B22-QYL.pdf
- Description:
- DIODE ZENER 22V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:8,795
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Product details
Overview
BZX8850S-B22-QYL from Nexperia is a low-current Zener voltage regulator diode in the BZX8850S-Q series, designed for precision voltage reference and regulation in space-constrained, low-power circuits. It delivers a nominal 22 V Zener voltage (±2 % tolerance), 250 Ω differential resistance at 5 mA, and operates with only 50 μA test current - enabling ultra-low-bias operation in battery-powered sensor nodes and automotive body electronics.
For engineers reviewing the BZX8850S-B22-QYL datasheet, BZX8850S-B22-QYL pinout, BZX8850S-B22-QYL application, or BZX8850S-B22-QYL equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, side-wettable-flank DFN1006BD-2 package details, thermal resistance (340 K/W), and real-world use cases in automotive voltage monitoring and portable power management.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining stable output voltage across its cathode-anode terminals under reverse bias. Its specified Zener voltage of 22 V (B-series ±2 %) is guaranteed at IZ = 50 μA, with differential resistance ≤250 Ω at 5 mA and temperature coefficient of +16.7 mV/K - indicating positive drift with junction temperature rise.
The SOD882BD (DFN1006BD-2) package features side-wettable flanks for automated optical solder-joint inspection, and its thermal resistance from junction to ambient is 340 K/W on FR4 PCB - limiting continuous power dissipation to 365 mW at Tamb ≤ 25 °C per derating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22 V nominal, ±2 % tolerance (B-series); stable reference point for 22 V rail regulation |
| Differential Resistance rdiff | ≤250 Ω at IZ = 5 mA; ensures low dynamic impedance for noise suppression in feedback paths |
| Test Current IZ | 50 μA; enables operation in micro-power systems where bias current must be minimized |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA; defines conduction threshold in forward direction for protection or clamping |
| Total Power Dissipation Ptot | 365 mW at Tamb ≤ 25 °C on standard FR4 PCB; sets maximum steady-state thermal load |
| Junction Temperature Tj | −55 °C to +150 °C; supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes; certified for automotive discrete semiconductor stress testing per AEC standard |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount package measuring 1.0 mm × 0.6 mm × 0.47 mm, with side-wettable flanks for AOI-compatible reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA - reduces quiescent current in always-on battery circuits by >95% vs. traditional 5 mA Zeners |
| Side-wettable flanks (SWF) | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield in high-volume automotive PCB assembly |
| Automotive qualification | AEC-Q101 qualified - validated for temperature cycling, humidity, mechanical shock, and ESD robustness required in automotive ECUs |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for external trimming in 22 V reference applications such as LIN bus voltage monitors |
| Optimized leakage behavior | Intentional minor rise in leakage current per AN90031 - improves switching speed and reduces noise in transient-sensitive analog front-ends |
Applications
| Automotive Body Control Module (BCM) | Portable Gas Sensor Interface |
|---|---|
|
Use Scenario: Voltage reference for ADC input scaling in 22 V-supplied door module microcontrollers. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 22 V reference to internal ADC reference buffer. Use Value: Enables accurate 12-bit voltage measurement of window motor current without external voltage divider or LDO. |
Use Scenario: Biasing circuit for electrochemical CO sensor requiring precise 22 V excitation. IC Role / Device Role / Timing Role: Low-current Zener reference establishing fixed sensor operating voltage in coin-cell-powered detector. Use Value: Maintains sensor linearity over 10-year shelf life by eliminating drift from resistor-based dividers. |
| Industrial PLC Input Protection | Medical Wearable Battery Monitor |
|
Use Scenario: Overvoltage clamp on 24 V digital input channel exposed to field wiring transients. IC Role / Device Role / Timing Role: Fast-response shunt limiter absorbing surge energy before reaching downstream logic ICs. Use Value: Withstands 40 W non-repetitive peak reverse power (100 µs pulse) while adding <0.5 mm² PCB area. |
Use Scenario: Reference voltage source for coulomb counter IC monitoring lithium coin cell (CR2032) discharge profile. IC Role / Device Role / Timing Role: Ultra-low-current Zener generating stable 22 V reference for analog front-end gain calibration. Use Value: Draws only 50 μA - extends 5-year wearable runtime by avoiding 2–3 mA LDO quiescent current penalty. |
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-C22 | ±5 % tolerance, SOT-23 package, 350 mW Ptot, rdiff ≈ 300 Ω at 5 mA | Larger footprint (2.9 mm × 1.3 mm), no AEC-Q101 qualification, higher leakage at low IZ | Choose for cost-sensitive non-automotive designs where ±5 % tolerance is acceptable and board space is not constrained. |
| MMSZ5247B | ±5 % tolerance, SOD-123 package, 500 mW Ptot, rdiff ≈ 33 Ω at 20 mA | Higher power rating but requires ≥20 mA test current; no side-wettable flanks; not AEC-Q101 qualified | Prefer when higher current regulation (>5 mA) is needed and AOI inspection is not required. |
Compared with BZX8850S-B22-QYL, BZX84-C22 trades tighter tolerance and automotive qualification for lower cost and wider availability, while MMSZ5247B offers lower dynamic impedance at higher bias but lacks low-current capability and AEC-Q101 validation - making the BZX8850S-B22-QYL uniquely suited for miniaturized, battery-operated automotive sensing.
Availability
BZX8850S-B22-QYL is available at Aetrix Electronics and suitable for automotive body electronics, portable gas detection systems, industrial PLC input protection, and medical wearable battery monitoring requiring stable component supply, AEC-Q101 compliance, and ultra-small footprint.
Supply support for BZX8850S-B22-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 logic, discrete, and MOSFET devices, with leadership in automotive-qualified components and advanced packaging.
The BZX8850S-Q series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space-constrained, battery-sensitive automotive and portable applications demanding AEC-Q101 reliability and sub-100 μA bias operation.
FAQ
What is the maximum reverse voltage this Zener can regulate continuously?
The BZX8850S-B22-QYL is rated for continuous Zener operation up to its nominal 22 V (±2 %), with absolute maximum reverse voltage limited by its 365 mW power dissipation ceiling at 25 °C ambient. At 22 V, this corresponds to a maximum continuous Zener current of 16.6 mA - derating linearly above 25 °C per the 340 K/W thermal resistance.
Does the marking 'SY' on the top indicate the cathode?
Yes. Per Table 4 and Figure 9 in the datasheet, BZX8850S-B22-QYL uses the marking code 'SY', and the cathode is identified by the marking bar on the top surface - consistent with Pin 1 designation in Table 2. The bar aligns with the cathode terminal (K), which is electrically Pin 1 in the DFN1006BD-2 outline.
Can this Zener be used in place of a 22 V TL431-based shunt regulator?
No - the BZX8850S-B22-QYL is a passive two-terminal Zener diode, whereas the TL431 is an active three-terminal adjustable shunt regulator with internal reference and amplifier. This part cannot replicate TL431's programmability, low output impedance, or current-sinking capability beyond 16.6 mA, but it serves as a simpler, lower-cost, lower-quiescent alternative where fixed 22 V regulation suffices.
Is the 50 μA test current the only recommended operating point?
No - the 50 μA value is the standardized test condition for specifying nominal VZ and tolerance; the device operates reliably across 10 μA to 16.6 mA (at 25 °C). However, differential resistance improves significantly above 1 mA (e.g., 250 Ω at 5 mA), so design should balance regulation accuracy, noise, and quiescent current based on system requirements.
BZX8850S-B22-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):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.7 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-B22-QYL FAQ
1.How can I place an order for BZX8850S-B22-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B22-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-B22-QYL reliable?
The price and inventory of BZX8850S-B22-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-B22-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B22-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B22-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B22-QYL?
BZX8850S-B22-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B22-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-B22-QYL?
For technical support, including BZX8850S-B22-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B22-QYL requirements.
6.How does Aetrix verify that BZX8850S-B22-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B22-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-B22-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B22-QYL?
All BZX8850S-B22-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B22-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-B22-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B22-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B22-QYL Tags
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MMBZ5240B-7-F
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