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Nexperia USA Inc. BZX8850S-B33-QYL
- Part No.:
- BZX8850S-B33-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B33-QYL.pdf
- Description:
- DIODE ZENER 33V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:7,966
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Product details
Overview
BZX8850S-B33-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 33 V Zener voltage at 50 µA test current, with ±2 % tolerance (B-series), 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B33-QYL datasheet, BZX8850S-B33-QYL pinout, BZX8850S-B33-QYL application, or BZX8850S-B33-QYL equivalent, this device serves as a compact, side-wettable-flank-compatible voltage reference in battery-powered sensors, ECU bias networks, and low-quiescent-current power rail monitoring where stable 33 V clamping at microamp-level bias is required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 32.3 V to 33.7 V at IZ = 50 µA, exhibiting a typical differential resistance of 325 Ω at 5 mA and a temperature coefficient of +0.05 mV/K. Its low 50 µA test current enables operation in ultra-low-power biasing applications without loading sensitive signal paths.
The device uses a planar silicon junction structure housed in a DFN1006BD-2 (SOD882BD) package with side-wettable flanks for automated optical solder-joint inspection. Junction-to-ambient thermal resistance is 340 K/W on standard FR4 PCB, supporting reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 32.3 V to 33.7 V at IZ = 50 µA - defines precise clamping threshold for 33 V nominal regulation |
| Tolerance | ±2 % (B-series) - ensures tight voltage accuracy critical for reference stability in automotive ECUs |
| Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - supports continuous operation in thermally limited SMT layouts |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - enables predictable forward conduction during transient overvoltage events |
| Differential Resistance (rdiff) | 325 Ω max at IZ = 5 mA - determines regulation stiffness and output impedance under load variation |
| Reverse Current (IR) | ≤ 0.05 µA at VR = 25.4 V - guarantees minimal leakage in high-impedance bias networks |
| Package | DFN1006BD-2 (SOD882BD), 1.0 mm × 0.6 mm × 0.47 mm - enables 0201-class board area with IPC-compliant side-wettable flanks |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), leadless surface-mount plastic package with side-wettable flanks; 2-terminal configuration; 0.65 mm pitch; body dimensions 1.0 mm × 0.6 mm × 0.47 mm; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs; marked by bar on package top |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path for regulation function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Side-wettable flanks (SWF) | Enables automated X-ray and AOI inspection of solder joints without requiring additional test points or underfill |
| Low 50 µA test current | Permits use in micropower systems such as tire pressure sensors and wake-up circuitry without compromising battery life |
| ±2 % voltage tolerance (B-series) | Reduces need for post-assembly trimming in voltage reference designs targeting <1 % system error budgets |
| Optimized leakage profile | Intentional minor rise in IR supports faster switching transients and lower noise in feedback loops versus legacy Zeners |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stable 33 V reference for ADC biasing and CAN transceiver VIO supply in BCM power management ICs. IC Role / Device Role / Timing Role: Zener voltage reference providing accurate, low-drift DC bias point for analog front-end circuitry. Use Value: Maintains ADC full-scale accuracy across −40 °C to +125 °C ambient due to AEC-Q101 thermal validation and low tempco (+0.05 mV/K). |
Use Scenario: Overvoltage clamp protecting 3.3 V/5 V microcontroller I/O pins from 24 V field wiring transients in factory automation sensors. IC Role / Device Role / Timing Role: Transient voltage suppressor operating in Zener breakdown to shunt surge energy before it reaches downstream logic. Use Value: Limits clamping voltage to ≤33.7 V while drawing only 50 µA quiescent current-preserving signal integrity without loading the sensor output. |
| Portable Medical Diagnostic Device | Smart Meter Power Supply Monitoring |
Use Scenario: Precision voltage reference for lithium-ion battery cell voltage measurement in handheld ECG units. IC Role / Device Role / Timing Role: Low-current Zener reference feeding a ratiometric voltage divider into a 16-bit sigma-delta ADC. Use Value: Enables ±0.5 % end-to-end voltage measurement accuracy over 10-year shelf life due to tight ±2 % tolerance and low long-term drift. |
Use Scenario: Undervoltage detection trigger in polyphase smart meter auxiliary power supplies using isolated flyback converters. IC Role / Device Role / Timing Role: Threshold detector that asserts fault flag when main 33 V rail drops below 32.3 V during brownout conditions. Use Value: Provides deterministic trip point with <100 ns response to input dips, verified under AEC-Q101 accelerated life testing for >15-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850S-C33-Q | ±5 % tolerance (C-series), higher max IR (0.05 µA vs. B-series' 0.05 µA same spec but looser distribution), identical package and thermal specs | Suitable for non-critical biasing where cost sensitivity outweighs voltage accuracy requirements | Select when system-level calibration compensates for wider VZ spread and long-term drift is managed via firmware |
| MMSZ5261B-7-F | Same 33 V nominal, ±5 % tolerance, SOD-123 package (2.7 mm × 1.6 mm), higher Ptot (500 mW), no AEC-Q101 qualification | Preferred in industrial power supplies where board space is less constrained and automotive qualification is not required | Choose for legacy designs needing drop-in replacement on larger footprints or where extended power handling justifies larger package size |
Compared with BZX8850S-C33-Q, the BZX8850S-B33-QYL offers tighter voltage control essential for uncalibrated analog sensing; versus MMSZ5261B-7-F, it provides automotive qualification and 60 % smaller footprint at the expense of 27 % lower power rating-making it optimal for next-gen compact, safety-aware electronics.
Availability
BZX8850S-B33-QYL is available at Aetrix Electronics and suitable for automotive body control modules, portable medical diagnostics, industrial sensor interfaces, and smart meter auxiliary power monitoring requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZX8850S-B33-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 low-current Zener regulator portfolio, engineered specifically for AEC-Q101-compliant voltage reference and clamping in space-constrained, battery-sensitive automotive and industrial systems.
FAQ
What is the maximum reverse voltage this Zener can safely clamp without degradation?
The absolute maximum non-repetitive peak reverse power dissipation is 40 W for 100 µs pulses at Tj = 25 °C. Continuous clamping must remain within the 33.7 V upper limit of its Zener range and respect the 365 mW steady-state power derating curve-exceeding either causes irreversible junction damage or parametric shift.
Does the side-wettable flank design require special stencil or reflow profile adjustments?
No special stencil is needed-the DFN1006BD-2 footprint matches standard 0201 land patterns with added 0.22 mm side extensions. Reflow follows JEDEC J-STD-020D for MSLE1 moisture sensitivity level; peak temperature must not exceed 260 °C for ≤30 seconds to preserve SWF integrity and avoid voiding.
How does the B-series differ electrically from the C-series variant of the same nominal voltage?
BZX8850S-B33-QYL has ±2 % VZ tolerance (32.3–33.7 V), while C33-Q is ±5 % (31.35–34.65 V). Both share identical thermal resistance, package, and AEC-Q101 qualification-but B-series exhibits tighter rdiff distribution and lower typical leakage, making it preferred for precision references.
Can this Zener be used in series or parallel configurations for higher voltage or current handling?
Series connection is viable for higher voltage references (e.g., two BZX8850S-B33-QYL yield ~66 V), but requires matched units to prevent current hogging. Parallel use is not recommended-minor VZ mismatches cause unequal current sharing and thermal runaway; instead, select higher-power alternatives like BZX85 series for >365 mW needs.
BZX8850S-B33-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):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25 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-B33-QYL FAQ
1.How can I place an order for BZX8850S-B33-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B33-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-B33-QYL reliable?
The price and inventory of BZX8850S-B33-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-B33-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B33-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B33-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B33-QYL?
BZX8850S-B33-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B33-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-B33-QYL?
For technical support, including BZX8850S-B33-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B33-QYL requirements.
6.How does Aetrix verify that BZX8850S-B33-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B33-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-B33-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B33-QYL?
All BZX8850S-B33-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B33-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-B33-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B33-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B33-QYL Tags
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