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Nexperia USA Inc. BZX8850S-B1V8-QYL
- Part No.:
- BZX8850S-B1V8-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B1V8-QYL.pdf
- Description:
- DIODE ZENER 1.8V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:5,491
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Product details
Overview
BZX8850S-B1V8-QYL from Nexperia is a low-current Zener voltage regulator diode in a DFN1006BD-2 (SOD882BD) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 1.8 V regulation at 50 µA test current, with ±2 % tolerance (B-series), 365 mW power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B1V8-QYL datasheet, BZX8850S-B1V8-QYL pinout, BZX8850S-B1V8-QYL application, or BZX8850S-B1V8-QYL equivalent, this device serves as a compact, side-wettable-flank-compatible Zener for battery-powered sensor nodes, automotive body electronics, and portable MCU voltage monitoring where low leakage and stable low-voltage reference are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 1.76 V to 1.84 V at IZ = 50 µA, exhibiting a differential resistance ≤600 Ω at 5 mA and a negative temperature coefficient of −3.5 mV/K. Its low 50 µA test current enables accurate regulation under micro-power conditions without loading weak sources.
The device features intentional minor leakage optimization per AN90031 for fast switching transients and reduced noise in signal conditioning paths. Thermal resistance from junction-to-ambient is 340 K/W on standard FR4 PCB, supporting operation from −55 °C to +150 °C ambient with 150 °C max junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 1.8 V at IZ = 50 µA - precise low-voltage reference for 1.8 V logic rails and analog sensor biasing |
| Tolerance | ±2 % (B-series) - tight regulation window enabling accurate threshold detection without trimming |
| Power Dissipation | 365 mW at Tamb ≤ 25 °C - sufficient headroom for transient surges in automotive modules |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - low conduction loss when used in forward-biased protection or clamping |
| Differential Resistance | ≤ 600 Ω at IZ = 5 mA - ensures stable output under small load variations in reference circuits |
| Reverse Current | ≤ 1.0 µA at VR = 1.0 V - minimal quiescent drain in always-on battery monitoring systems |
| Capacitance | 220 pF at VR = 0 V, f = 1 MHz - predictable AC impedance for noise filtering in low-frequency references |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount package (1.0 mm × 0.6 mm × 0.47 mm) with side-wettable flanks for automated optical solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated voltage node; polarity marking bar identifies cathode for correct PCB orientation |
| 2 | Anode (A) | Ground or lower-potential return path; reverse-biased configuration enables Zener breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in energy-harvesting and coin-cell-powered designs |
| AEC-Q101 qualification | Qualified for automotive applications - supports deployment in body control modules and infotainment power rails |
| Side-wettable flanks | DFN1006BD-2 package geometry - enables automated X-ray and AOI inspection of solder joints in high-reliability production |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves transient response and reduces broadband noise in reference paths |
| Thermal robustness | 150 °C max junction temperature - sustains operation in under-hood environments without derating at full power |
Applications
| Automotive Body Control Unit (BCU) | Portable Gas Sensor Interface |
|---|---|
|
Use Scenario: Voltage reference for ADC input scaling in door module microcontrollers monitoring window lift position and mirror adjustment feedback. IC Role / Device Role / Timing Role: Zener regulator providing stable 1.8 V reference to 12-bit SAR ADC, rejecting supply ripple from shared 5 V rail. Use Value: ±2 % tolerance and low 50 µA operating current ensure consistent measurement accuracy across temperature while minimizing battery drain in sleep mode. |
Use Scenario: Bias voltage source for electrochemical gas sensor electrodes in handheld air quality monitors powered by CR2032 cells. IC Role / Device Role / Timing Role: Low-current Zener supplying precise 1.8 V excitation to sensor anode, replacing higher-power LDOs to extend runtime. Use Value: 220 pF capacitance and −3.5 mV/K tempco enable repeatable sensor output calibration over −20 °C to +60 °C operating range. |
| Industrial IoT Edge Node | USB-C Power Negotiation Reference |
|
Use Scenario: Reference generator for comparator-based brown-out detection in battery-backed RS-485 node controllers. IC Role / Device Role / Timing Role: Zener diode establishing 1.8 V trip threshold relative to system VDD, triggering graceful shutdown before MCU reset. Use Value: ≤1.0 µA reverse current at 1.0 V ensures negligible standby current impact on 10-year battery life targets. |
Use Scenario: Voltage divider reference for USB PD CC line monitoring circuitry in compact power adapters. IC Role / Device Role / Timing Role: Precision 1.8 V Zener anchoring resistive divider that sets CC pin detection thresholds for sink/source negotiation. Use Value: Side-wettable flanks support IPC-A-610 Class 3 solder joint verification required for certified USB-C accessories. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-current Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8840S-B1V8-Q | Same 1.8 V, ±2 %, but rated at 300 mW Ptot and uses SOD323 package without side-wettable flanks | Lacks AEC-Q101 qualification and SWF; unsuitable for automotive or automated optical inspection requirements | Select only for non-automotive, cost-sensitive consumer designs where solder-joint inspection is not mandated |
| MMSZ4678T1G | 1.8 V, ±5 %, 500 mW, SOD-123 package; higher power but looser tolerance and no AEC-Q101 rating | Higher leakage (>2 µA at 1 V) and larger footprint reduce suitability for space-constrained, ultra-low-power systems | Prefer when higher surge capability is needed and tighter regulation or automotive compliance is not required |
Compared with BZX8850S-B1V8-QYL, the BZX8840S-B1V8-Q offers lower cost but sacrifices AEC-Q101 compliance and manufacturability assurance, while MMSZ4678T1G trades precision and miniaturization for raw power handling-making the BZX8850S-B1V8-QYL optimal for automotive-grade, space-limited, low-quiescent designs.
Availability
BZX8850S-B1V8-QYL is available at Aetrix Electronics and suitable for automotive body electronics, portable sensor interfaces, industrial edge nodes, and USB-C power adapter reference circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8850S-B1V8-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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BZX8850S-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current voltage reference and regulation in space-constrained, battery-sensitive automotive and portable electronics.
FAQ
What is the maximum reverse voltage this Zener can regulate at 50 µA?
The BZX8850S-B1V8-QYL regulates at a nominal 1.8 V with a guaranteed range of 1.76 V to 1.84 V when tested at IZ = 50 µA. Its absolute maximum reverse voltage is limited by the 200 mA forward current rating and 40 W non-repetitive peak power, but sustained regulation occurs only within its specified Zener voltage window under defined test conditions.
Does this part require a heatsink in typical PCB layouts?
No heatsink is required. With a thermal resistance of 340 K/W on standard FR4 (single-sided copper), the device dissipates up to 365 mW at ambient ≤25 °C without exceeding its 150 °C junction limit. Derating begins above 25 °C ambient, but typical low-current operation (<100 µA) results in negligible self-heating even at 85 °C ambient.
How does the "B" suffix differ from "C" in the BZX8850S-Q series?
The "B" suffix denotes ±2 % tolerance (e.g., BZX8850S-B1V8-QYL: 1.76–1.84 V), while "C" indicates approximately ±5 % (e.g., BZX8850S-C1V8-Q: 1.71–1.89 V). Both share identical package, power rating, and AEC-Q101 qualification, but "B" parts are selected for higher-precision reference applications demanding tighter voltage stability.
Can this Zener be used in forward-bias mode as a regular diode?
Yes-it exhibits ≤0.9 V forward voltage at 10 mA, making it usable for low-drop clamping or basic rectification. However, its primary design intent and characterization are for reverse-bias Zener regulation; forward characteristics are secondary and not optimized for high-current or high-speed switching applications.
BZX8850S-B1V8-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):
- 1.8 V
- Tolerance:
- ±2%
- Power - Max:
- 365 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006BD-2
BZX8850S-B1V8-QYL FAQ
1.How can I place an order for BZX8850S-B1V8-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B1V8-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-B1V8-QYL reliable?
The price and inventory of BZX8850S-B1V8-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-B1V8-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B1V8-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B1V8-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B1V8-QYL?
BZX8850S-B1V8-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B1V8-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-B1V8-QYL?
For technical support, including BZX8850S-B1V8-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B1V8-QYL requirements.
6.How does Aetrix verify that BZX8850S-B1V8-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B1V8-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-B1V8-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B1V8-QYL?
All BZX8850S-B1V8-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B1V8-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-B1V8-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B1V8-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B1V8-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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