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Nexperia USA Inc. BZX8850S-B20-QYL
- Part No.:
- BZX8850S-B20-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B20-QYL.pdf
- Description:
- DIODE ZENER 20V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:7,228
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Product details
Overview
BZX8850S-B20-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 20 V Zener voltage at 50 µA test current, with ±2 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for automotive use - deployed in battery management and sensor biasing circuits.
For engineers reviewing the BZX8850S-B20-QYL datasheet, BZX8850S-B20-QYL pinout, BZX8850S-B20-QYL application, or BZX8850S-B20-QYL equivalent, key selection criteria include its ultra-low 50 µA test current, side-wettable DFN1006BD-2 (SOD882BD) package for automated optical inspection, 20 V ±2 % regulation accuracy, and specified differential resistance of ≤225 Ω at IZ = 5 mA.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal VZ of 19.0 V to 21.0 V at IZ = 50 µA, exhibiting a temperature coefficient of +14.4 mV/K and differential resistance ≤225 Ω at 5 mA. Its low leakage current (<0.05 µA at VR = 16 V) supports stable reference performance in standby-sensitive systems.
The device uses a silicon planar epitaxial process and is packaged in a leadless DFN1006BD-2 (SOD882BD) outline with side-wettable flanks, enabling reliable reflow soldering and AOI-compatible cathode marking. Junction-to-ambient thermal resistance is 340 K/W on standard FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.0 V to 21.0 V at IZ = 50 µA - defines precise regulation point for low-bias applications |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance (rdiff) | ≤225 Ω at IZ = 5 mA - maintains regulation stability under small load variations |
| Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - sets maximum continuous operating power on standard FR4 PCB |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables predictable forward conduction during transient events or polarity checks |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation across automotive under-hood and industrial ambient ranges |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements for discrete semiconductors |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount plastic package measuring 1.0 mm × 0.6 mm × 0.47 mm, with side-wettable flanks for solder joint inspection and 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marked by bar on top surface; reverse-biased terminal during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - minimizes quiescent current draw in battery-powered and always-on sensor nodes |
| Side-wettable flanks | DFN1006BD-2 package geometry - enables automated optical inspection of solder joints without X-ray |
| Optimized leakage profile | Intentional minor rise in leakage for BZX8850S-Bxx-Q variants - improves switching speed and reduces noise in dynamic bias networks |
| Automotive qualification | AEC-Q101 compliant - certified for use in engine control units, body electronics, and ADAS subsystems |
| Thermal robustness | 150 °C max junction temperature - sustains reliability in high-temperature PCB environments without derating |
Applications
| Automotive Sensor Biasing | Portable Gas Detector Reference |
|---|---|
|
Use Scenario: Providing stable 20 V bias to MEMS pressure sensors in engine manifold modules. IC Role / Device Role / Timing Role: Zener voltage reference diode regulating sensor excitation voltage. Use Value: ±2 % tolerance and low 50 µA test current ensure accurate sensor output scaling while minimizing battery drain over 10+ year service life. |
Use Scenario: Generating fixed reference voltage for electrochemical gas sensor signal conditioning in handheld detectors. IC Role / Device Role / Timing Role: Precision shunt regulator establishing analog front-end reference level. Use Value: 225 Ω differential resistance and AEC-Q101 qualification enable repeatable calibration stability across −40 °C to +85 °C operating range. |
| Industrial PLC Input Protection | Medical Wearable Power Monitoring |
|
Use Scenario: Clamping and regulating 24 V DC input rails in programmable logic controller digital input modules. IC Role / Device Role / Timing Role: Low-power Zener clamp limiting transient overvoltage at microcontroller GPIO protection circuits. Use Value: 365 mW power rating and 0.9 V forward voltage allow safe energy absorption during ESD events without latch-up risk. |
Use Scenario: Supplying calibrated reference for lithium-ion cell voltage monitoring in compact wearable health monitors. IC Role / Device Role / Timing Role: Shunt voltage reference stabilizing ADC reference divider network. Use Value: Side-wettable DFN1006BD-2 package enables high-density layout and AOI-verified assembly in miniaturized flex-rigid PCBs. |
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-C20-Q | ±5 % tolerance (vs. ±2 %); identical VZ range (19.0–21.0 V), same package and AEC-Q101 qualification | Suitable where tighter regulation is not required; lower cost for non-critical biasing | Select when system-level calibration compensates for wider tolerance and cost sensitivity outweighs precision needs |
| MMSZ5248B-7-F | 20 V nominal, ±5 %, SOD-123 package (2.7 mm × 1.6 mm), 500 mW Ptot, no AEC-Q101 qualification | Larger footprint, higher power, but lacks automotive qualification and side-wettable flanks | Choose only for non-automotive, higher-power, or legacy board designs where DFN1006BD-2 assembly is unavailable |
Compared with BZX8850S-C20-Q, the BZX8850S-B20-QYL offers tighter regulation for precision analog stages; versus MMSZ5248B-7-F, it provides automotive qualification and miniaturization at the expense of absolute power handling - making it optimal for next-gen compact, safety-aware embedded systems.
Availability
BZX8850S-B20-QYL is available at Aetrix Electronics and suitable for automotive sensor biasing, portable gas detector references, and industrial PLC input protection requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant traceability.
Supply support for BZX8850S-B20-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 headquartered in Nijmegen, Netherlands, specializing in high-performance, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX8850S-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for low-current, high-accuracy voltage regulation in space-constrained, battery-sensitive, and thermally demanding applications.
FAQ
What is the maximum reverse current (IR) specification for BZX8850S-B20-QYL at 16 V?
The maximum reverse current is 0.05 µA at VR = 16 V and Tj = 25 °C, as specified in Table 8 of the datasheet. This ultra-low leakage supports stable reference behavior in always-on circuits and extends battery life in portable systems.
Can BZX8850S-B20-QYL be used in place of a 20 V Zener in an existing SOD-123 design?
No - BZX8850S-B20-QYL uses the DFN1006BD-2 (SOD882BD) package (1.0 mm × 0.6 mm), which is physically incompatible with SOD-123 footprints (2.7 mm × 1.6 mm). A PCB redesign and stencil update are required to accommodate its side-wettable flanks and 0.65 mm pitch.
Does the "QYL" suffix indicate a specific tape-and-reel configuration or testing grade?
Yes - the "QYL" suffix denotes Nexperia's standard automotive-grade packaging: 10,000 units per 8 mm tape-and-reel, with full AEC-Q101 test documentation, lot traceability, and extended temperature screening per automotive requirements.
How does the BZX8850S-B20-QYL's 50 µA test current impact circuit design compared to traditional 5 mA Zeners?
Operating at 50 µA instead of 5 mA reduces bias current by 100×, enabling direct connection to high-impedance sources like voltage dividers or op-amp outputs without loading error. It also lowers self-heating and improves long-term drift stability in precision references.
BZX8850S-B20-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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.2 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-B20-QYL FAQ
1.How can I place an order for BZX8850S-B20-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B20-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-B20-QYL reliable?
The price and inventory of BZX8850S-B20-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-B20-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B20-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B20-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B20-QYL?
BZX8850S-B20-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B20-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-B20-QYL?
For technical support, including BZX8850S-B20-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B20-QYL requirements.
6.How does Aetrix verify that BZX8850S-B20-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B20-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-B20-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B20-QYL?
All BZX8850S-B20-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B20-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-B20-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B20-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B20-QYL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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