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Nexperia USA Inc. BZX8850S-B47-QYL
- Part No.:
- BZX8850S-B47-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B47-QYL.pdf
- Description:
- DIODE ZENER 47V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:2,013
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Product details
Overview
BZX8850S-B47-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 47 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-B47-QYL datasheet, BZX8850S-B47-QYL pinout, BZX8850S-B47-QYL application, or BZX8850S-B47-QYL equivalent, this device is selected for battery-powered sensor nodes, ECU voltage monitoring rails, and low-bias analog front-ends where stable low-current regulation and side-wettable-flank solderability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 46.1 V to 47.9 V at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance of 375 Ω at IZ = 2 mA. Its low 50 µA test current enables operation in ultra-low-power bias networks without loading sensitive sources.
The device uses a planar silicon process with side-wettable flanks on a DFN1006BD-2 (SOD882BD) package, enabling automated optical solder-joint inspection. It meets AEC-Q101 stress requirements including Tj up to 150 °C and storage temperature from −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 46.1 V to 47.9 V at IZ = 50 µA - defines precise regulation point for low-bias reference circuits |
| Tolerance | ±2 % (B-series) - ensures tight voltage accuracy without post-calibration in production |
| Power Dissipation Ptot | 365 mW at Tamb ≤ 25 °C on FR4 PCB - supports continuous operation in thermally limited layouts |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables reliable anode-cathode polarity verification during functional test |
| Differential Resistance rdiff | 375 Ω at IZ = 2 mA - determines output impedance and load regulation error under varying current |
| Reverse Current IR | ≤ 0.05 µA at VR = 32.9 V - minimizes leakage-induced error in high-impedance sensing paths |
| Package | DFN1006BD-2 (SOD882BD), 1.0 mm × 0.6 mm × 0.47 mm - enables 0201-class board area with IPC-compliant solder joint inspection |
Pinout & Package
DFN1006BD-2 (SOD882BD) is a leadless, surface-mount plastic package with side-wettable flanks, optimized for reflow soldering and automated optical inspection. Dimensions: 1.0 mm × 0.6 mm × 0.47 mm body, 0.65 mm pitch, 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 |
| 2 | Anode (A) | Connected to ground or lower-potential rail; establishes reference polarity and current return path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test standard - supports deployment in engine control, ADAS, and body modules |
| Side-wettable flanks | Enables automated X-ray and AOI solder-joint inspection - improves manufacturing yield and field reliability |
| Low 50 µA test current | Minimizes quiescent current draw in battery-backed systems - extends operational life in IoT sensors and telematics |
| ±2 % voltage tolerance | Reduces need for external trimming or binning - lowers BOM cost and simplifies calibration in production |
| 150 °C max junction temperature | Supports operation in under-hood environments and sealed enclosures without derating - maintains regulation stability |
Applications
| Automotive ECU Voltage Monitoring | Portable Gas Sensor Biasing |
|---|---|
|
Use Scenario: Monitoring 48 V supply rail integrity in 12 V/48 V dual-battery automotive ECUs. IC Role / Device Role / Timing Role: Zener reference diode providing stable 47 V threshold for comparator-based overvoltage detection. Use Value: Enables accurate trip-point setting with <±0.94 V error margin and negligible current draw (<50 µA) on the monitored rail. |
Use Scenario: Supplying stable bias voltage to electrochemical gas sensor elements in handheld air quality monitors. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator establishing fixed 47 V excitation potential for sensor electrodes. Use Value: Maintains sensor linearity across temperature (±0.05 mV/K drift) while drawing only 50 µA from coin-cell or Li-ion sources. |
| Industrial PLC Analog Input Protection | Medical Wearable Battery Voltage Reference |
|
Use Scenario: Clamping transient overvoltage on 4–20 mA loop-powered analog input channels in industrial PLCs. IC Role / Device Role / Timing Role: Precision Zener used as shunt limiter in front-end protection circuitry before signal conditioning ICs. Use Value: Limits fault energy with 365 mW dissipation headroom and fast response (ns-scale breakdown) to protect downstream ADCs. |
Use Scenario: Providing stable reference for lithium battery voltage measurement in FDA-cleared wearable cardiac monitors. IC Role / Device Role / Timing Role: Low-leakage Zener generating known 47 V reference for ratiometric ADC scaling against battery pack voltage. Use Value: Delivers <0.05 µA reverse leakage at 32.9 V, ensuring measurement accuracy unaffected by reference current variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C47 | ±5 % tolerance, SOT-23 package, 500 mW Ptot, 100 µA test current | Larger footprint, higher power, looser voltage accuracy | Select when higher surge handling or legacy SOT-23 layout compatibility is required |
| MMSZ47ET1G | ±5 % tolerance, SOD-123 package, 500 mW Ptot, 10 µA test current | Higher thermal resistance (400 K/W), no AEC-Q101 qualification | Select for cost-sensitive non-automotive applications needing lower test current but accepting wider tolerance |
Compared with BZX8850S-B47-QYL, BZX84-C47 offers higher power margin but sacrifices voltage accuracy and board-area efficiency; MMSZ47ET1G reduces test current further but lacks automotive qualification and thermal performance, making the BZX8850S-B47-QYL optimal for space-constrained, AEC-grade 47 V reference designs.
Availability
BZX8850S-B47-QYL is available at Aetrix Electronics and suitable for automotive ECU monitoring, portable sensor biasing, and industrial analog input protection requiring stable component supply, AEC-Q101 compliance, and ultra-small footprint.
Supply support for BZX8850S-B47-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.
The BZX8850S-Q series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for precision voltage referencing in battery-powered, space-constrained, and automotive-grade applications.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX8850S-B47-QYL has a nominal Zener voltage of 47 V, with guaranteed breakdown occurring between 46.1 V and 47.9 V at 50 µA test current. Its absolute maximum reverse voltage is not rated separately - operation above 47.9 V risks exceeding its 365 mW power limit unless current is strictly limited by external series resistance.
Is this device suitable for use in high-temperature under-hood automotive environments?
Yes. The BZX8850S-B47-QYL is AEC-Q101 qualified and rated for junction temperatures up to 150 °C. Its thermal resistance (Rth(j-a) = 340 K/W on FR4) and stable temperature coefficient (+0.05 mV/K) ensure predictable regulation performance in under-hood ambient conditions up to +125 °C with proper PCB copper area.
How does the side-wettable flank design improve manufacturability?
The side-wettable flanks on the DFN1006BD-2 package allow automated optical inspection (AOI) and X-ray systems to verify solder fillet formation along the lateral edges - a critical capability for zero-defect automotive assembly. This eliminates reliance on post-reflow electrical testing for solder joint integrity.
Can this Zener diode be used in series or parallel configurations for higher voltage or current handling?
Series connection is feasible for higher voltage references but requires matched units to avoid unequal voltage sharing; parallel use is not recommended due to negative temperature coefficient interaction and thermal runaway risk. For >365 mW needs, external current-limiting resistors or active regulation must be added - the device itself is rated for single-diode operation only.
BZX8850S-B47-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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-B47-QYL FAQ
1.How can I place an order for BZX8850S-B47-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B47-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-B47-QYL reliable?
The price and inventory of BZX8850S-B47-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-B47-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B47-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B47-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B47-QYL?
BZX8850S-B47-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B47-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-B47-QYL?
For technical support, including BZX8850S-B47-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B47-QYL requirements.
6.How does Aetrix verify that BZX8850S-B47-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B47-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-B47-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B47-QYL?
All BZX8850S-B47-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B47-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-B47-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B47-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B47-QYL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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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
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
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