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Nexperia USA Inc. BZX8850S-B4V7-QYL
- Part No.:
- BZX8850S-B4V7-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B4V7-QYL.pdf
- Description:
- DIODE ZENER 4.7V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:2,392
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Product details
Overview
BZX8850S-B4V7-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 4.7 V Zener voltage at 50 µA test current, with ±2 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B4V7-QYL datasheet, BZX8850S-B4V7-QYL pinout, BZX8850S-B4V7-QYL application, or BZX8850S-B4V7-QYL equivalent, key selection criteria include its ultra-small DFN1006BD-2 (SOD882BD) package, side-wettable flanks for automated optical inspection, low leakage optimization, and specified performance at 50 µA bias current.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage under varying load and temperature conditions. Its differential resistance is ≤80 Ω at IZ = 5 mA, and it exhibits a temperature coefficient of −2.7 mV/K, enabling predictable drift behavior across −55 °C to +150 °C ambient range.
The device features intentional minor leakage current enhancement per AN90031 to improve switching speed and reduce noise-critical for low-noise analog references and fast-response protection circuits. Thermal resistance from junction to ambient 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) | 4.61 V to 4.79 V at IZ = 50 µA - tight ±2 % tolerance enables accurate low-bias voltage referencing |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - ensures minimal conduction loss during forward bias or ESD clamp operation |
| Total Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - supports continuous regulation in compact, unheatsinked layouts |
| Differential Resistance (rdiff) | ≤ 80 Ω at IZ = 5 mA - low dynamic impedance improves regulation stability under small-signal load variations |
| Reverse Current (IR) | ≤ 3.0 µA at VR = 3.0 V - low leakage preserves battery life in always-on portable systems |
| Junction Temperature (Tj) | −55 °C to +150 °C - wide operating range validated for under-hood automotive environments |
| AEC-Q101 Qualified | Yes - certified for automotive discrete semiconductor stress testing, including HTRB, HTGB, and ESD |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount package measuring 1.0 mm × 0.6 mm × 0.47 mm with side-wettable flanks for solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; polarity marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in micro-power sensor nodes and battery-backed circuits |
| Side-wettable flanks (SWF) | DFN1006BD-2 footprint - supports automated optical inspection (AOI) of solder joints without X-ray |
| Optimized leakage profile | Intentional minor IR increase per AN90031 - reduces switching noise and improves transient response vs. standard Zeners |
| AEC-Q101 qualification | Qualified for automotive applications - meets stress test requirements for temperature cycling, humidity, and reliability |
Applications
| Automotive Body Control Module (BCM) | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Voltage reference for ADC input scaling in door module microcontrollers. IC Role / Device Role / Timing Role: Zener regulator providing stable 4.7 V reference to 12-bit SAR ADC. Use Value: ±2 % VZ tolerance and −2.7 mV/K TC ensure <0.5 % full-scale error over −40 °C to +85 °C operating range. |
Use Scenario: Low-power voltage clamp for ECG front-end op-amp supply rails. IC Role / Device Role / Timing Role: Reverse-biased Zener protecting amplifier inputs from ESD and overvoltage transients. Use Value: 365 mW Ptot and 0.9 V VF allow safe clamping without thermal runaway or forward conduction distortion. |
| IoT Edge Node Power Monitor | Industrial PLC Input Conditioning |
|
Use Scenario: Reference source for battery voltage monitoring circuit in LoRaWAN sensor endpoint. IC Role / Device Role / Timing Role: Precision shunt regulator feeding comparator threshold network. Use Value: 50 µA test current matches typical sleep-mode current budget; low rdiff maintains accuracy despite supply ripple. |
Use Scenario: Signal-level voltage stabilization for 24 V DC digital input interface. IC Role / Device Role / Timing Role: Zener-based level translator converting field-side 24 V signals to 4.7 V logic-compatible levels. Use Value: AEC-Q101 qualification and 150 °C Tj rating support long-term reliability in high-temperature control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V7 | ±5 % tolerance, SOT-23 package (2.9 mm × 1.3 mm), 300 mW Ptot, no AEC-Q101 qualification | Larger footprint, higher thermal resistance (400 K/W), unsuitable for automotive under-hood use | Select only for cost-sensitive non-automotive consumer designs where size and qualification are secondary |
| MMSZ4704T1G | ±5 % tolerance, SOD-123 package (3.7 mm × 1.6 mm), 500 mW Ptot, AEC-Q101 qualified but higher VZ drift (+2.5 mV/K) | Higher power handling but larger size; less stable over temperature than BZX8850S-B4V7-QYL | Prefer when higher surge capability is needed and board area permits larger package |
Compared with BZX84-C4V7 and MMSZ4704T1G, the BZX8850S-B4V7-QYL offers superior size efficiency (1.0 mm × 0.6 mm), tighter ±2 % tolerance, lower thermal resistance on FR4, and optimized low-current noise performance-making it the preferred choice for space-constrained, automotive-grade, and ultra-low-power regulation.
Availability
BZX8850S-B4V7-QYL is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, IoT edge monitoring, and industrial PLC input conditioning requiring stable component supply, AEC-Q101 compliance, and ultra-small footprint integration.
Supply support for BZX8850S-B4V7-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 essential semiconductors-including logic, discretes, MOSFETs, and bipolar transistors-with manufacturing rooted in process expertise and automotive-grade quality systems.
The BZX8850S-Q series belongs to Nexperia's precision low-current Zener regulator portfolio, engineered specifically for miniaturized, battery-efficient, and automotive-qualified voltage reference and clamping applications.
FAQ
What is the maximum reverse voltage (VR) that BZX8850S-B4V7-QYL can withstand before breakdown?
The device is rated for a nominal Zener voltage of 4.7 V at 50 µA, with guaranteed breakdown occurring between 4.61 V and 4.79 V. Its absolute maximum non-repetitive peak reverse voltage is not specified independently, but the limiting value for non-repetitive peak reverse power dissipation is 40 W for 100 µs pulses-indicating robust transient suppression capability within its thermal limits.
Can BZX8850S-B4V7-QYL be used in parallel for higher current handling?
No-Zener diodes exhibit negative temperature coefficients and parameter spread; paralleling them causes current hogging and thermal instability. For higher current regulation, use a single higher-power Zener or a dedicated shunt regulator IC. The BZX8850S-B4V7-QYL is strictly intended for low-current (<200 mA forward, <5 mA Zener) applications.
Does the side-wettable flank (SWF) feature require special stencil or reflow profile?
No special stencil is required-the DFN1006BD-2 footprint in Figure 10 specifies standard solder land dimensions (0.6 mm × 0.7 mm pads, 0.4 mm solder mask opening). Reflow follows standard Pb-free profiles; SWF enables post-reflow AOI verification but does not alter thermal or process requirements.
How does the "intentional minor rise of leakage current" affect long-term reliability?
This design feature-documented in AN90031-is implemented via controlled doping and does not compromise reliability. Accelerated life testing under AEC-Q101 confirms >1000 hours HTOL at 150 °C junction temperature, with no degradation in VZ, rdiff, or leakage beyond specification limits.
BZX8850S-B4V7-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):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-B4V7-QYL FAQ
1.How can I place an order for BZX8850S-B4V7-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B4V7-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-B4V7-QYL reliable?
The price and inventory of BZX8850S-B4V7-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-B4V7-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B4V7-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B4V7-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B4V7-QYL?
BZX8850S-B4V7-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B4V7-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-B4V7-QYL?
For technical support, including BZX8850S-B4V7-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B4V7-QYL requirements.
6.How does Aetrix verify that BZX8850S-B4V7-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B4V7-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-B4V7-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B4V7-QYL?
All BZX8850S-B4V7-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B4V7-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-B4V7-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B4V7-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B4V7-QYL Tags
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MMSZ5231B-7-F
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