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Nexperia USA Inc. BZX8850S-C1V8-QYL
- Part No.:
- BZX8850S-C1V8-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-C1V8-QYL.pdf
- Description:
- DIODE ZENER 1.8V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:30,895
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Product details
Overview
BZX8850S-C1V8-Q from Nexperia is a low-current Zener voltage regulator diode in a DFN1006BD-2 (SOD882BD) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 1.8 V Zener voltage at 50 µA test current, with ±5 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-C1V8-Q datasheet, BZX8850S-C1V8-Q pinout, BZX8850S-C1V8-Q application, or BZX8850S-C1V8-Q equivalent, this device serves as a compact, side-wettable-flank-compatible voltage reference for battery-powered sensors, MCU reset circuits, and low-quiescent-current analog monitoring stages where stable sub-2 V regulation under microampere bias is required.
Technical Context
This Zener diode operates in reverse breakdown with a specified VZ of 1.71 V (min) to 1.89 V (max) at IZ = 50 µA, exhibiting a negative temperature coefficient of −3.5 mV/K and differential resistance ≤600 Ω at 5 mA. Its low leakage (≤1.0 µA at VR = 1.0 V) and 220 pF capacitance support noise-sensitive analog front-ends.
The device uses a silicon planar Zener structure optimized for fast switching response and reduced noise, enabled by intentional minor leakage current rise per AN90031. Thermal resistance from junction-to-ambient is 340 K/W on standard FR4 PCB, limiting continuous operation to ≤105 °C ambient at full 365 mW dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.71 V to 1.89 V at IZ = 50 µA - defines precise low-voltage reference point for 1.8 V rail stabilization |
| Tolerance | ±5 % - enables cost-effective selection for non-critical biasing without tight binning overhead |
| Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - supports sustained operation in space-constrained PCB layouts with minimal copper area |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - ensures low-loss forward conduction during transient overvoltage clamping |
| Differential Resistance (rdiff) | ≤600 Ω at IZ = 5 mA - maintains voltage stability against small load current variations in reference paths |
| Junction Temperature (Tj) | −55 °C to +150 °C - guarantees functionality across extended automotive under-hood thermal profiles |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TC, HAST, and ESD testing per AEC standard |
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 automated optical 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; forms reverse-biased junction enabling Zener breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in micropower systems such as coin-cell IoT sensors and sleep-mode MCU peripherals |
| Side-wettable flanks (SWF) | DFN1006BD-2 footprint - allows automated AOI verification of solder fillet integrity without X-ray inspection |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching noise and improves transient response in feedback loops |
| Automotive qualification | AEC-Q101 compliant - meets stress-test requirements for temperature cycling, humidity, and high-temperature operating life in automotive ECUs |
| Ultra-compact footprint | 0.65 mm pitch, 0.6 mm width - saves >60 % board area versus legacy SOD-323 Zeners while maintaining thermal performance |
Applications
| Automotive Cabin Sensors | Portable Medical Wearables |
|---|---|
|
Use Scenario: Voltage reference for MEMS pressure sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Provides stable 1.8 V bias to op-amp input stage and ADC reference divider network. Use Value: Enables <±0.5 % measurement accuracy over −40 °C to +105 °C ambient due to matched thermal drift and low rdiff. |
Use Scenario: Low-power reset supervisor for ultra-low-duty-cycle ECG SoC during standby mode. IC Role / Device Role / Timing Role: Supplies regulated 1.8 V to POR circuitry, ensuring reliable wake-up from deep-sleep states. Use Value: Draws only 50 µA quiescent current, extending single-charge battery life beyond 12 months in clinical-grade wearables. |
| Industrial Smart Transmitters | Consumer Audio DAC Biasing |
|
Use Scenario: Reference voltage source for 4–20 mA loop-powered temperature transmitter analog front-end. IC Role / Device Role / Timing Role: Sets precision gain and offset points for instrumentation amplifier and current-sense resistor scaling. Use Value: Maintains <±1 % regulation across 3.3 V to 24 V loop supply range due to low dynamic impedance and AEC-Q101 robustness. |
Use Scenario: Analog bias rail for Class-D audio amplifier gate drivers in Bluetooth earbuds. IC Role / Device Role / Timing Role: Stabilizes 1.8 V logic interface between DSP and driver IC, reducing switching noise coupling. Use Value: 220 pF capacitance and −3.5 mV/K tempco minimize jitter-induced THD degradation in 24-bit audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C1V8 | SC-70 package (2.2 mm × 1.35 mm); 350 mW Ptot; ±5 % tolerance; no AEC-Q101 qualification | Larger footprint; unsuitable for automotive or space-constrained portable designs | Select when legacy SC-70 layout compatibility is required and automotive qualification is unnecessary |
| MMSZ4678T1G | SOD-123 package; 500 mW Ptot; ±5 %; VZ = 1.8 V at 0.05 mA; not AEC-Q101 qualified | Higher power rating but larger size (3.7 mm × 1.6 mm); lacks SWF and automotive validation | Prefer for higher-power analog rails where board area is less constrained and automotive compliance is not mandated |
Compared with BZX84-C1V8 and MMSZ4678T1G, the BZX8850S-C1V8-Q offers the smallest footprint, side-wettable flanks for process control, and AEC-Q101 certification-making it uniquely suitable for next-generation automotive and miniaturized medical electronics where reliability, size, and manufacturability are co-prioritized.
Availability
BZX8850S-C1V8-Q is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical wearables, industrial smart transmitters, and consumer audio DAC biasing requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for BZX8850S-C1V8-Q 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 AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-current voltage reference and biasing in space-constrained, thermally demanding automotive and portable electronics applications.
FAQ
What is the maximum reverse current (IR) at VR = 1.0 V for BZX8850S-C1V8-Q?
The maximum reverse current is 1.0 µA at VR = 1.0 V and Tj = 25 °C, as specified in Table 8 of the datasheet. This low leakage supports accurate biasing in micropower analog circuits and extends battery life in always-on sensing nodes.
Can BZX8850S-C1V8-Q be used in place of a 1.8 V LDO for power regulation?
No-it is a Zener diode, not a linear regulator. It provides voltage reference or shunt regulation only, requiring an external current-limiting resistor and offering no current-sourcing capability or line/load regulation. Use only for biasing, clamping, or reference functions-not primary power delivery.
Is the cathode marking visible on the top surface of the DFN1006BD-2 package?
Yes-the cathode is indicated by a laser-marked bar on the top surface of the package, aligned with Pin 1 per Figure 9 in the datasheet. This marking enables unambiguous orientation during automated placement and visual inspection.
Does BZX8850S-C1V8-Q support reflow soldering per JEDEC J-STD-020?
Yes-it is qualified for standard Pb-free reflow profiles up to 260 °C peak temperature. The DFN1006BD-2 package outline and recommended footprint in Figure 10 comply with IPC-7351B density level 'N', supporting reliable solder joint formation with side-wettable flank inspection.
BZX8850S-C1V8-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 1.8 V
- Tolerance:
- ±5%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006BD-2
BZX8850S-C1V8-QYL FAQ
1.How can I place an order for BZX8850S-C1V8-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-C1V8-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-C1V8-QYL reliable?
The price and inventory of BZX8850S-C1V8-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-C1V8-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-C1V8-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-C1V8-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-C1V8-QYL?
BZX8850S-C1V8-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-C1V8-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-C1V8-QYL?
For technical support, including BZX8850S-C1V8-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-C1V8-QYL requirements.
6.How does Aetrix verify that BZX8850S-C1V8-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-C1V8-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-C1V8-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-C1V8-QYL?
All BZX8850S-C1V8-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-C1V8-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-C1V8-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-C1V8-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-C1V8-QYL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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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Diodes Incorporated
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MM5Z5V1ST1G
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Micro Commercial Co
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Diodes Incorporated
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Diodes Incorporated
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