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Nexperia USA Inc. BZX8850S-B12-QYL
- Part No.:
- BZX8850S-B12-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B12-QYL.pdf
- Description:
- DIODE ZENER 12V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:6,250
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Product details
Overview
BZX8850S-B12-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 provides a nominal 12 V Zener voltage at 50 µA test current, with ±2 % tolerance, 150 Ω typical differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B12-QYL datasheet, BZX8850S-B12-QYL pinout, BZX8850S-B12-QYL application, or BZX8850S-B12-QYL equivalent, key selection criteria include its ultra-small DFN1006BD-2 (SOD882BD) package, side-wettable flanks for automated optical inspection, low leakage optimization per AN90031, and suitability for battery-powered sensor nodes and automotive body electronics requiring stable low-current biasing.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 11.80 V to 12.20 V at IZ = 50 µA, exhibiting a temperature coefficient of +6.0 mV/K and reverse current ≤0.05 µA at VR = 9.1 V. Its differential resistance drops to 25 Ω at IZ = 1 mA and 150 Ω at IZ = 5 mA, supporting stable regulation under light-load conditions.
The device features intentional minor leakage current enhancement per AN90031 to improve switching speed and reduce noise in signal conditioning paths. It is rated for Tj up to 150 °C and qualified to AEC-Q101, confirming robustness for under-hood and infotainment subsystems where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.80 V to 12.20 V at IZ = 50 µA - defines precise regulation point for low-bias reference circuits |
| Tolerance | ±2 % - enables tight voltage margin control in safety-critical automotive sensors |
| Differential Resistance (rdiff) | 150 Ω at IZ = 5 mA - ensures minimal output voltage shift under small load variations |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - supports efficient anode-cathode conduction during power-up or fault conditions |
| Total Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous thermal budget for compact layouts |
| Junction Temperature (Tj) | −55 °C to +150 °C - validates operation across automotive cold-crank and engine-bay hot-soak extremes |
| AEC-Q101 Qualified | Yes - confirms stress-test compliance for discrete semiconductors in automotive applications |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), leadless surface-mount plastic 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 (K) | Cathode | Connected to regulated output node; marking bar on top surface identifies this terminal |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | DFN1006BD-2 (1.0 mm × 0.6 mm) - enables placement in high-density automotive ECUs and wearables |
| Side-wettable flanks | Integrated into SOD882BD outline - allows automated X-ray and AOI verification of solder joint integrity |
| Low test current specification | 50 µA Zener test condition - minimizes quiescent current draw in always-on battery circuits |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and broadband noise in analog front-ends |
| Automotive-grade reliability | AEC-Q101 qualified - validated for vibration, thermal shock, and humidity exposure per automotive standards |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 12 V reference for LIN bus transceiver biasing and microcontroller reset circuitry in door modules. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to clamp and stabilize supply rails. Use Value: ±2 % tolerance and AEC-Q101 qualification ensure consistent reset thresholds across temperature and lifetime, reducing field return rates. |
Use Scenario: Biasing op-amp input stages and ADC reference dividers in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Low-current voltage regulator establishing precise DC offset points in analog signal chains. Use Value: 50 µA test current and 150 Ω dynamic impedance maintain accuracy without loading low-output-current sensor outputs. |
| Portable Medical Monitoring Device | Smart Home Smoke Detector |
Use Scenario: Supplying regulated voltage to low-power MCU peripherals and analog front-end ICs in battery-operated pulse oximeters. IC Role / Device Role / Timing Role: Zener regulator maintaining reference stability during battery discharge from 3.6 V to 2.8 V. Use Value: 365 mW power rating and −55 °C to +150 °C operating range support extended shelf life and clinical environmental resilience. |
Use Scenario: Generating clean 12 V bias for electrochemical CO sensor heaters and comparator hysteresis networks in 10-year-life detectors. IC Role / Device Role / Timing Role: Precision voltage reference enabling accurate heater temperature setpoint control and alarm threshold detection. Use Value: Optimized leakage behavior per AN90031 suppresses baseline drift in ultra-low-power sleep modes, extending battery service interval. |
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-C12-Q | ±5 % tolerance (vs. ±2 %); identical VZ range (11.40 V–12.60 V), same package and AEC-Q101 rating | Suitable for non-critical biasing where cost sensitivity outweighs precision requirements | Select when tighter regulation is unnecessary and BOM cost reduction is prioritized over voltage margin control |
| MMSZ5242B-7-F | ±5 % tolerance; 12 V nominal; SOD-123 package (2.7 mm × 1.6 mm); no AEC-Q101 qualification; 500 mW Ptot | Targeted at industrial/commercial boards lacking automotive qualification mandates | Choose only for non-automotive designs where larger footprint and unqualified reliability are acceptable |
Compared with BZX8850S-B12-QYL, the C12-Q variant trades precision for cost in identical automotive-qualified hardware, while MMSZ5242B-7-F offers higher power but sacrifices package miniaturization, AEC-Q101 validation, and low-leakage noise performance essential for modern embedded sensing.
Availability
BZX8850S-B12-QYL is available at Aetrix Electronics and suitable for automotive body electronics, portable medical instrumentation, industrial 4–20 mA transmitters, and smart home safety devices requiring stable component supply across extended product lifecycles.
Supply support for BZX8850S-B12-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.
The BZX8850S-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for low-current, high-stability voltage reference in space-constrained, battery-sensitive, and thermally demanding environments.
FAQ
What is the maximum reverse voltage (VR) that BZX8850S-B12-QYL can withstand before breakdown?
The device is specified to operate with a reverse voltage up to its nominal Zener voltage of 12 V; breakdown occurs at 11.80 V minimum under 50 µA test current. Absolute maximum reverse voltage is not defined separately - operation beyond VZ range risks exceeding Ptot limits or junction temperature ratings.
Does BZX8850S-B12-QYL support reflow soldering with standard lead-free profiles?
Yes - it is qualified for reflow soldering per JEDEC J-STD-020, compatible with standard Pb-free profiles (peak temperature ≤260 °C). The DFN1006BD-2 package uses side-wettable flanks aligned with IPC-7351B land patterns, and footprint data is provided in Figure 10 of the datasheet.
How does the "intentional minor rise of leakage current" affect circuit performance?
Per AN90031, this controlled increase in reverse leakage improves transient response and reduces high-frequency noise in analog signal paths. It does not compromise DC regulation accuracy but enhances stability in fast-switching or RF-sensitive applications like sensor amplifiers and clock buffers.
Is the cathode marking visible after PCB assembly?
Yes - the cathode is indicated by a laser-marked bar on the top surface of the DFN1006BD-2 package. Side-wettable flanks allow post-reflow optical inspection of solder fillets, and the marking remains visible under standard AOI systems even after reflow, enabling traceability and polarity verification.
BZX8850S-B12-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):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.1 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-B12-QYL FAQ
1.How can I place an order for BZX8850S-B12-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B12-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-B12-QYL reliable?
The price and inventory of BZX8850S-B12-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-B12-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B12-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B12-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B12-QYL?
BZX8850S-B12-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B12-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-B12-QYL?
For technical support, including BZX8850S-B12-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B12-QYL requirements.
6.How does Aetrix verify that BZX8850S-B12-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B12-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-B12-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B12-QYL?
All BZX8850S-B12-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B12-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-B12-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B12-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B12-QYL Tags
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MMBZ5240B-7-F
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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