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Nexperia USA Inc. BZX8850-B1V8YL
- Part No.:
- BZX8850-B1V8YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-B1V8YL.pdf
- Description:
- DIODE ZENER 1.8V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:5,723
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Product details
Overview
BZX8850-B1V8YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 1.8 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 μA test current, features 0.9 V forward voltage at 10 mA, and supports ≤250 mW total power dissipation. It is used in battery-powered sensor nodes requiring ultra-low bias current and tight voltage stability.
For engineers reviewing the BZX8850-B1V8YL datasheet, BZX8850-B1V8YL pinout, BZX8850-B1V8YL application, or BZX8850-B1V8YL equivalent, key selection criteria include Zener voltage tolerance (±2 %), low test current operation (50 μA), thermal resistance (500 K/W), cathode/anode terminal assignment, and DFN1006-2 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining 1.8 V across its terminals under reverse-bias conditions at IZ = 50 μA. Its differential resistance is ≤600 Ω at 50 μA and ≤100 Ω at 1 mA, enabling stable regulation even with small load variations.
The diode exhibits a negative temperature coefficient of −3.5 mV/K and capacitance of 220 pF at 0 V, making it suitable for low-noise analog references where thermal drift and parasitic coupling must be minimized in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 1.76 V to 1.84 V at IZ = 50 μA - ensures ±2 % accuracy for precision low-voltage reference generation |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables efficient anode-side biasing in dual-supply or level-shift circuits |
| Total Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C on FR4 PCB - defines maximum continuous thermal load in standard SMT mounting |
| Differential Resistance rdiff | ≤ 600 Ω at 50 μA; ≤ 100 Ω at 1 mA - determines output impedance and regulation sensitivity to current changes |
| Reverse Leakage IR | ≤ 1.0 μA at VR = 1.0 V - guarantees minimal quiescent current draw in always-on battery monitoring circuits |
| Thermal Resistance Rth(j-a) | 500 K/W in free air on FR4 - establishes junction-to-ambient temperature rise per watt of dissipated power |
| Junction Temperature Tj | −55 °C to +150 °C - supports operation in extended industrial and automotive-adjacent environments |
Pinout & Package
Package: SOD882 (DFN1006-2), leadless ultra-small surface-mount plastic package; dimensions 1.0 × 0.6 × 0.5 mm; cathode marked by bar on 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 rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA - enables use in microamp-level bias networks without compromising regulation accuracy |
| Tight voltage tolerance | ±2 % for B-series - reduces need for post-regulation trimming in space-constrained IoT sensor modules |
| Ultra-small footprint | SOD882 (1.0 × 0.6 mm) - supports >2× higher component density than SOD-323 in wearable and hearable PCBs |
| Optimized leakage profile | Controlled IR ≤1.0 μA at 1.0 V - minimizes standby power loss in coin-cell–powered devices |
| High thermal robustness | 150 °C max junction temperature - sustains reliability during reflow and in thermally aggressive enclosures |
Applications
| Portable Battery Monitoring | Low-Power Sensor Reference |
|---|---|
Use Scenario: Real-time voltage tracking of CR2032 coin cells in wireless temperature sensors. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 1.8 V threshold for ADC input scaling and brown-out detection. Use Value: Enables accurate state-of-charge estimation down to 1.9 V supply while drawing <1 μA standby current. |
Use Scenario: Biasing analog front-end of MEMS accelerometer in always-on motion detector. IC Role / Device Role / Timing Role: Low-drift voltage reference for op-amp gain-setting network and ADC reference divider. Use Value: Maintains ±0.5 % full-scale accuracy over −40 °C to +85 °C due to matched −3.5 mV/K TC and low rdiff. |
| USB-C Port Protection Clamp | EEPROM Write-Voltage Stabilizer |
Use Scenario: Overvoltage clamping on VBUS line of USB-C peripheral dongles. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting transient spikes to ≤2.0 V during hot-plug events. Use Value: Limits peak VBUS overshoot within 100 ns using low Cd (220 pF) and fast turn-on at 50 μA bias. |
Use Scenario: Stabilizing programming voltage for 1.8 V I²C EEPROM in industrial control modules. IC Role / Device Role / Timing Role: Precision 1.8 V regulation source for EEPROM VPP pin during write cycles. Use Value: Ensures reliable byte-programming at 1.76–1.84 V range, eliminating write failures caused by supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5221BS | 1.8 V, ±5 % tolerance, SOT-23 package (2.9 × 1.3 mm), 350 mW Ptot | Larger footprint and looser tolerance; higher power handling but less suitable for ultra-dense layouts | Select when board space permits and ±5 % regulation accuracy is acceptable for cost-sensitive designs |
| Vishay BZX84-C1V8 | 1.8 V, ±5 % tolerance, SOT-23 package, 300 mW Ptot, rdiff ≤ 120 Ω at 5 mA | Higher test current (5 mA), larger package, no 50 μA specification - unsuitable for sub-μA biasing | Choose only if system can support ≥5 mA Zener current and requires higher surge immunity |
Compared with MMBZ5221BS and BZX84-C1V8, BZX8850-B1V8YL offers superior space efficiency (75 % smaller footprint), tighter ±2 % tolerance, and verified 50 μA operation-critical for energy-harvesting and coin-cell–powered systems where every microamp and square millimeter matters.
Availability
BZX8850-B1V8YL is available at Aetrix Electronics and suitable for portable battery monitoring, low-power sensor reference, USB-C port protection, and EEPROM write-voltage stabilization requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX8850-B1V8YL 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 essential semiconductors for power management, logic, and analog applications, serving automotive, industrial, and consumer markets with high-reliability discrete and logic solutions.
The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and regulation in space-constrained, battery-operated electronics.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZX8850-B1V8YL is rated for nominal Zener voltage of 1.8 V at 50 μA, with guaranteed regulation between 1.76 V and 1.84 V. Its absolute maximum reverse voltage is not defined separately-it operates within its specified VZ window under controlled current; exceeding 2.0 V risks entering unregulated or avalanche-limited regions per datasheet Fig. 5.
Can this diode be used in series with another Zener to achieve 3.6 V regulation?
No-BZX8850-B1V8YL is not characterized for series operation. Its low test current (50 μA) and tight tolerance assume single-diode shunt configuration. Series stacking introduces mismatched temperature coefficients (−3.5 mV/K each) and uncontrolled current sharing, violating datasheet operating conditions and risking regulation instability.
Is the SOD882 package compatible with standard reflow profiles for lead-free soldering?
Yes-the device is qualified for JEDEC J-STD-020D reflow profiles. Figure 10 specifies a recommended solder land pattern for DFN1006-2, and the package withstands peak temperatures up to 260 °C for ≤30 seconds, matching IPC-7095 guidelines for Class 3 assembly.
Does the 'YL' suffix indicate tape-and-reel packaging or a special screening grade?
The 'YL' suffix denotes standard commercial-grade packaging in 10,000-piece 8 mm tape-and-reel format per Nexperia ordering code conventions. It carries no enhanced screening, automotive qualification, or moisture sensitivity level (MSL) deviation beyond the base SOD882 specification (MSL1, floor life unlimited).
BZX8850-B1V8YL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8850
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 1.8 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
BZX8850-B1V8YL FAQ
1.How can I place an order for BZX8850-B1V8YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-B1V8YL 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 BZX8850-B1V8YL reliable?
The price and inventory of BZX8850-B1V8YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-B1V8YL is usually 5 days.
3.What payment methods are accepted for BZX8850-B1V8YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-B1V8YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-B1V8YL?
BZX8850-B1V8YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-B1V8YL 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 BZX8850-B1V8YL?
For technical support, including BZX8850-B1V8YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-B1V8YL requirements.
6.How does Aetrix verify that BZX8850-B1V8YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-B1V8YL 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 BZX8850-B1V8YL meets industry standards.
7.What is the process for return or replacement of BZX8850-B1V8YL?
All BZX8850-B1V8YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-B1V8YL, 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 BZX8850-B1V8YL part is unused and in its original packaging.
Return procedure for BZX8850-B1V8YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-B1V8YL Tags
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