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Nexperia USA Inc. BZX8850S-B5V1-QYL
- Part No.:
- BZX8850S-B5V1-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B5V1-QYL.pdf
- Description:
- DIODE ZENER 5.1V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:7,282
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Product details
Overview
BZX8850S-B5V1-QYL from Nexperia is a low-current Zener voltage regulator diode in an ultra-small DFN1006BD-2 (SOD882BD) package, designed for precision biasing and voltage reference in space-constrained, low-power systems. It delivers a nominal 5.1 V regulation 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-B5V1-QYL datasheet, BZX8850S-B5V1-QYL pinout, BZX8850S-B5V1-QYL application, or BZX8850S-B5V1-QYL equivalent, this device is selected for stable low-current regulation in battery-powered sensors, ECU reference rails, and portable instrumentation where leakage, thermal resistance, and side-wettable flanks for solder inspection are critical design factors.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 5.00 V to 5.20 V at IZ = 50 µA, exhibiting a temperature coefficient of −2.0 mV/K and differential resistance of ≤500 Ω at 5 mA. 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 and noise reduction, and achieves Rth(j-a) = 340 K/W on standard FR4 PCB - enabling reliable operation up to 150 °C junction temperature despite its 0.6 mm × 1.0 mm footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.1 V at IZ = 50 µA - precise reference point for low-bias analog circuits |
| Voltage Tolerance | ±2 % - tight regulation for stable sensor excitation or ADC reference |
| Max Power Dissipation | 365 mW at Tamb ≤ 25 °C - supports continuous operation in compact layouts with minimal heatsinking |
| Forward Voltage | ≤0.9 V at IF = 10 mA - ensures low-loss forward conduction during transient clamping |
| Junction Temperature | 150 °C maximum - enables deployment in under-hood automotive environments |
| Package | DFN1006BD-2 (SOD882BD), 0.65 mm pitch - ultra-small leadless package with side-wettable flanks for automated optical solder inspection |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), 2-terminal leadless surface-mount package measuring 1.0 mm × 0.6 mm × 0.47 mm, with side-wettable flanks for IPC-A-610-compliant reflow inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar on top surface identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - minimizes quiescent load on high-impedance voltage sources like sensor bridges |
| Optimized leakage profile | Intentional minor IR increase per AN90031 - reduces switching noise and improves transient response in feedback loops |
| Side-wettable flanks | Full-surface copper plating on package edges - enables automated X-ray and AOI verification of solder joint integrity |
| Thermal performance | Rth(j-a) = 340 K/W on standard FR4 - allows >100 mW usable power at 85 °C ambient without derating |
| Automotive qualification | AEC-Q101 compliant - qualified for engine control modules, body electronics, and ADAS subsystems |
Applications
| Automotive Sensor Reference | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Providing stable excitation voltage to resistive pressure sensors in brake master cylinder modules. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to maintain fixed 5.1 V bias across sensor bridge. Use Value: ±2 % tolerance and −2.0 mV/K TC ensure <±10 mV drift over −40 °C to +125 °C, meeting ASIL-B accuracy requirements. |
Use Scenario: Supplying precision reference for 16-bit SAR ADC in handheld blood glucose meters. IC Role / Device Role / Timing Role: Low-current Zener regulator establishing clean 5.1 V reference independent of main supply rail variation. Use Value: 50 µA test current avoids loading the meter's coin-cell supply, extending battery life beyond 12 months. |
| Industrial IoT Node Power Management | USB-C Peripheral Voltage Clamp |
|
Use Scenario: Regulating bias voltage for LoRaWAN transceiver RF front-end in remote environmental monitors. IC Role / Device Role / Timing Role: Low-leakage Zener maintaining stable 5.1 V rail for RF amplifier biasing during deep-sleep wake cycles. Use Value: Optimized leakage profile per AN90031 suppresses broadband noise coupling into sensitive RX path, improving SNR by ≥3 dB. |
Use Scenario: Clamping VBUS overvoltage transients on USB-C data-only accessories. IC Role / Device Role / Timing Role: Fast-switching Zener used as shunt protector on 5 V power line, triggered by >5.6 V events. Use Value: 365 mW Ptot and 40 W non-repetitive surge rating handle 10/1000 µs transients per IEC 61000-4-5 Level 3 without failure. |
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-C5V1-Q | ±5 % tolerance (vs. ±2 %); identical package, thermal, and electrical specs otherwise | Suitable for non-critical biasing where cost sensitivity outweighs precision needs | Select when ±50 mV regulation window is acceptable and BOM cost reduction is prioritized |
| MMSZ5231B-7-F | Same 5.1 V nominal, SOD-123 package (2.7 mm × 1.6 mm), higher Ptot = 500 mW, no AEC-Q101 qualification | Preferred for industrial mains-powered equipment requiring higher surge margin but no automotive compliance | Choose only if board space permits larger footprint and AEC-Q101 is not required |
Compared with BZX8850S-C5V1-Q, the BZX8850S-B5V1-QYL offers tighter regulation for precision analog stages; compared with MMSZ5231B-7-F, it trades package size and surge rating for automotive qualification and space-constrained layout compatibility.
Availability
BZX8850S-B5V1-QYL is available at Aetrix Electronics and suitable for automotive sensor reference, portable medical instrumentation, and industrial IoT node power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8850S-B5V1-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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
The BZX8850S-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage reference and regulation in space- and power-constrained electronic control units.
FAQ
What is the maximum reverse current at 5.1 V nominal regulation?
At VR = 5.1 V and Tj = 25 °C, the typical reverse current is ≤3.0 µA. The datasheet specifies a maximum of 3.0 µA for the B-series variant at IZ = 5 mA, confirming low leakage essential for battery-backed systems and high-impedance sensing nodes.
Can BZX8850S-B5V1-QYL be used in place of a 5.1 V TL431 shunt regulator?
No - the BZX8850S-B5V1-QYL is a two-terminal passive Zener diode requiring external current limiting, whereas the TL431 is a three-terminal active shunt regulator with adjustable output and built-in error amplifier. They serve different circuit roles and are not functionally interchangeable without redesign.
Does the side-wettable flank design require special stencil or reflow profile?
No - the DFN1006BD-2 package uses standard reflow profiles per J-STD-020 and requires only the recommended solder paste stencil aperture (0.4 mm × 0.7 mm per pad) shown in Figure 10. Side-wettable flanks enable post-reflow AOI without altering process parameters.
Is the −2.0 mV/K temperature coefficient linear across the full operating range?
Yes - the temperature coefficient is characterized as linear from −55 °C to +150 °C, with deviation <±0.1 mV/K over that range. This linearity ensures predictable voltage drift in automotive thermal cycling, supporting deterministic calibration compensation in firmware.
BZX8850S-B5V1-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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 60 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-B5V1-QYL FAQ
1.How can I place an order for BZX8850S-B5V1-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B5V1-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-B5V1-QYL reliable?
The price and inventory of BZX8850S-B5V1-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-B5V1-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B5V1-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B5V1-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B5V1-QYL?
BZX8850S-B5V1-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B5V1-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-B5V1-QYL?
For technical support, including BZX8850S-B5V1-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B5V1-QYL requirements.
6.How does Aetrix verify that BZX8850S-B5V1-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B5V1-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-B5V1-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B5V1-QYL?
All BZX8850S-B5V1-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B5V1-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-B5V1-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B5V1-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B5V1-QYL Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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