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Nexperia USA Inc. BZX8850-B22YL
- Part No.:
- BZX8850-B22YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-B22YL.pdf
- Description:
- DIODE ZENER 22V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
BZX8850-B22YL from Nexperia is a low-current Zener voltage regulator diode in SOD882 (DFN1006-2) package, designed for precision voltage reference and low-power biasing in portable electronics. It delivers 22 V nominal Zener voltage at 50 µA test current, ±2 % tolerance, 250 mW total power dissipation, and 250 Ω differential resistance at 5 mA, enabling stable regulation in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8850-B22YL datasheet, BZX8850-B22YL pinout, BZX8850-B22YL application, or BZX8850-B22YL equivalent, this page provides verified electrical parameters, thermal behavior, cathode/anode terminal mapping, and validated alternative parts for low-current voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown with a specified 22 V nominal working voltage (20.9–23.1 V range), optimized for low-bias conditions using 50 µA test current-ideal for ultra-low-power standby regulation. Its ±2 % tolerance and intentional minor leakage current improve switching speed and noise performance per AN90031.
The device exhibits 250 Ω dynamic impedance at 5 mA, −0.05 mV/K temperature coefficient near 22 V, and 60 pF junction capacitance at 0 V, supporting stable DC reference generation without significant thermal drift or capacitive loading in signal-path applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.9–23.1 V min/max at IZ = 50 µA - ensures tight reference accuracy for analog monitoring circuits |
| Tolerance | ±2 % - enables high-precision voltage clamping in feedback loops without external trimming |
| Differential Resistance (rdiff) | 250 Ω max at IZ = 5 mA - maintains low output impedance under light load variation |
| Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - supports continuous operation in space-constrained IoT modules |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - allows predictable forward conduction during transient overvoltage events |
| Junction Temperature (Tj) | 150 °C max - permits reliable operation in industrial ambient environments up to +125 °C |
| Reverse Current (IR) | 0.05 µA max at VR = 16.7 V - minimizes quiescent current draw in always-on battery circuits |
Pinout & Package
SOD882 (DFN1006-2) leadless ultra-small surface-mount package: 1.0 × 0.6 × 0.5 mm body, tin-plated terminals, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive connection for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces standby power in coin-cell-powered devices without sacrificing regulation fidelity |
| Optimized leakage profile | Intentional minor rise per AN90031 - improves transient response and reduces broadband noise in reference paths |
| Ultra-small footprint | SOD882 (1.0 × 0.6 mm) - enables placement in dense wearable PCB layouts with minimal board area impact |
| Stable temperature coefficient | −0.05 mV/K near 22 V - limits voltage drift to < ±1.1 mV over −40 to +85 °C ambient range |
| Controlled junction capacitance | 60 pF at 0 V - avoids signal coupling issues in high-impedance ADC reference inputs |
Applications
| Microcontroller Reset Circuit | Portable Sensor Biasing |
|---|---|
Use Scenario: Provides clean, stable 22 V reference to enable precise threshold detection in brown-out reset ICs. IC Role / Device Role / Timing Role: Zener voltage reference for comparator input in power-monitoring circuitry. Use Value: ±2 % tolerance ensures consistent reset activation across production units without calibration. |
Use Scenario: Supplies regulated bias voltage to MEMS pressure sensor front-end amplifiers in battery-operated wearables. IC Role / Device Role / Timing Role: Low-current voltage regulator maintaining constant supply to analog signal chain. Use Value: 50 µA test current enables operation from 10 µA standby rails without compromising reference stability. |
| ADC Reference Stabilization | Low-Power LED Current Control |
Use Scenario: Stabilizes reference voltage for 12-bit SAR ADC in environmental data loggers powered by Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Precision shunt reference establishing VREF for analog-to-digital conversion. Use Value: 250 Ω rdiff limits reference error to < 0.1 LSB under 100 µA load variation. |
Use Scenario: Sets constant current for indicator LEDs in handheld medical diagnostic tools with 3.7 V Li-ion supply. IC Role / Device Role / Timing Role: Zener-based current source element in series with current-limiting resistor. Use Value: 22 V VZ allows use with higher-voltage LED strings while maintaining < 1 % current drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850-C22 | ±5 % tolerance, identical 22 V nominal, same SOD882 package | Higher voltage variation acceptable in non-critical biasing where cost sensitivity outweighs precision | Select when ±5 % regulation accuracy suffices and BOM cost reduction is prioritized |
| MMSZ5247B | 20 V nominal, ±5 %, SOD-123 package (2.7 × 1.7 mm), 500 mW Ptot | Larger footprint and higher power rating suitable for higher-current reference designs | Choose only if board layout accommodates larger package and >250 mW dissipation is required |
Compared with BZX8850-C22, the BZX8850-B22YL offers tighter ±2 % tolerance for precision references; versus MMSZ5247B, it provides 44 % smaller footprint and lower quiescent current but trades off absolute power handling capacity.
Availability
BZX8850-B22YL is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, ADC reference stabilization, and low-power LED current control requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX8850-B22YL 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, energy-efficient logic, discrete, and MOSFET solutions with focus on reliability and manufacturability.
The BZX8850 series belongs to Nexperia's low-current Zener diode product line, engineered specifically for precision voltage reference and ultra-low-power regulation in battery-constrained portable and IoT applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX8850-B22YL?
The BZX8850-B22YL has a nominal Zener voltage of 22 V with guaranteed minimum and maximum values of 20.9 V and 23.1 V respectively at 50 µA test current. Breakdown occurs within this range; operation above 23.1 V risks exceeding absolute maximum ratings and may cause irreversible damage.
Can BZX8850-B22YL be used in series with other Zeners to achieve higher reference voltages?
Yes, BZX8850-B22YL can be cascaded in series to generate higher reference voltages, provided each device receives sufficient current to remain in regulation and thermal derating is applied for cumulative power dissipation. Total voltage equals sum of individual VZ values, but tolerance accumulates linearly.
Is the SOD882 package compatible with standard reflow soldering profiles?
Yes, the SOD882 package is qualified for lead-free reflow soldering per J-STD-020. Recommended peak temperature is 260 °C with 30-second duration above 217 °C. The footprint shown in Figure 10 of the datasheet must be followed to ensure reliable solder joint formation and thermal relief.
Does BZX8850-B22YL require a series current-limiting resistor in all applications?
Yes, a series current-limiting resistor is mandatory to prevent thermal runaway. The resistor value must be selected to maintain Zener current between 50 µA (minimum regulation) and 200 mA (absolute maximum forward current), while accounting for input voltage variation and power dissipation in both resistor and diode.
BZX8850-B22YL 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):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 250 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
BZX8850-B22YL FAQ
1.How can I place an order for BZX8850-B22YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-B22YL 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-B22YL reliable?
The price and inventory of BZX8850-B22YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-B22YL is usually 5 days.
3.What payment methods are accepted for BZX8850-B22YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-B22YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-B22YL?
BZX8850-B22YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-B22YL 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-B22YL?
For technical support, including BZX8850-B22YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-B22YL requirements.
6.How does Aetrix verify that BZX8850-B22YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-B22YL 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-B22YL meets industry standards.
7.What is the process for return or replacement of BZX8850-B22YL?
All BZX8850-B22YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-B22YL, 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-B22YL part is unused and in its original packaging.
Return procedure for BZX8850-B22YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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