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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX8850S-C9V1-QYL

Name: BZX8850S-C9V1-QYL
Brand: Nexperia USA Inc.
SKU: BZX8850S-C9V1-QYL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX8850S-C9V1-QYL

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-882

Datasheet:: BZX8850S-C9V1-QYL.pdf

Description:: DIODE ZENER 9.1V 365MW DFN1006BD

Quantity:: RFQ Add To RFQ list

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Inventory:9,725

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Product details

Overview

BZX8850S-C9V1-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 automotive and portable electronics. It delivers a nominal 9.1 V regulation at 50 µA test current, with ±2 % tolerance, 100 Ω differential resistance at 5 mA, and AEC-Q101 qualification for under-hood applications.

For engineers reviewing the BZX8850S-C9V1-QYL datasheet, BZX8850S-C9V1-QYL pinout, BZX8850S-C9V1-QYL application, or BZX8850S-C9V1-QYL equivalent, this device is selected for low-power voltage stabilization where tight tolerance, minimal leakage, and side-wettable flanks for automated optical inspection are critical in high-reliability PCB assemblies.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified working voltage of 8.65 V to 9.56 V at I_Z = 50 µA, exhibiting a temperature coefficient of +3.8 mV/K and diode capacitance of 150 pF at 0 V. Its low 50 µA test current enables stable regulation in micro-power circuits such as sensor bias networks and battery monitoring comparators.

The device features intentional minor leakage optimization per AN90031 for fast switching transients and reduced noise in feedback paths, while maintaining 365 mW total power dissipation on FR4 PCB and junction temperature limits up to 150 °C - supporting operation in extended ambient ranges from −55 °C to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	9.1 V at I_Z = 50 µA - defines precise reference point for low-bias voltage regulation
Voltage Tolerance	±2 % - ensures tight output stability across production lots without trimming
Differential Resistance	100 Ω at I_Z = 5 mA - determines load regulation error under varying current draw
Forward Voltage	≤ 0.9 V at I_F = 10 mA - enables predictable forward conduction during polarity-reversal protection
Total Power Dissipation	365 mW at T_amb ≤ 25 °C - sets maximum continuous thermal load on standard FR4 PCB
Junction Temperature Limit	150 °C - supports sustained operation in under-hood automotive environments
Thermal Resistance	340 K/W (junction-to-ambient, free air) - informs thermal design margin for unheatsinked layouts

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	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
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness
Side-wettable flanks	Enables automated optical inspection (AOI) of solder joints without X-ray in high-volume SMT lines
Low 50 µA test current	Minimizes quiescent current draw in battery-powered systems like tire pressure sensors and key fobs
Optimized leakage profile	Intentionally elevated IR improves transient response and reduces noise in feedback loops (AN90031)
Ultra-small footprint	0.65 mm pitch and 0.6 mm width allow placement in dense routing zones near MCUs and PMICs

Applications

Automotive Cabin Sensors

Portable Medical Monitors

Use Scenario: Voltage reference for analog front-end of cabin temperature and humidity sensors in HVAC control modules.

IC Role / Device Role / Timing Role: Zener regulator providing stable 9.1 V bias to op-amps and ADC reference inputs.

Use Value: ±2 % tolerance and +3.8 mV/K TC ensure <±10 mV drift over −40 °C to +85 °C, meeting ASIL-B signal chain accuracy requirements.

Use Scenario: Low-power voltage reference in wearable ECG patch front-ends powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Precision shunt regulator supplying clean bias to instrumentation amplifiers and SAR ADCs.

Use Value: 50 µA test current and 150 pF capacitance minimize loading on high-impedance sensor nodes while enabling sub-1 µA standby operation.

Industrial IoT Edge Nodes

Smart Meter Power Monitoring

Use Scenario: Reference source for isolated voltage sensing in battery-backed LoRaWAN gateways deployed in utility cabinets.

IC Role / Device Role / Timing Role: Stable Zener node feeding optocoupler input and MCU ADC channel for mains voltage scaling.

Use Value: AEC-Q101 qualification and 150 °C max junction temperature support long-term reliability in unventilated enclosures at 70 °C ambient.

Use Scenario: Secondary voltage reference in polyphase smart meters for anti-tampering detection circuitry.

IC Role / Device Role / Timing Role: Shunt regulator establishing known threshold for comparator-based overvoltage lockout.

Use Value: 100 Ω dynamic impedance ensures consistent trip point across line-voltage sags and surges, reducing false alarms.

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-B9V1-Q	±5 % tolerance (vs. ±2 %), higher r_diff (150 Ω), same 9.1 V nominal	Acceptable where cost sensitivity outweighs precision; less suitable for high-accuracy sensor bias	Select when budget constraints dominate and ±5 % regulation error is acceptable in non-critical rails
MMSZ5240B-TP	±5 % tolerance, SOD-123 package (larger), 500 mW P_tot, no AEC-Q101	Not qualified for automotive use; better for industrial mains-powered designs requiring higher power headroom	Choose only for non-automotive applications needing higher dissipation and legacy footprint compatibility

Compared with BZX8850S-C9V1-QYL, the BZX8850S-B9V1-Q trades precision for cost, while MMSZ5240B-TP offers higher power but lacks automotive qualification and miniaturization - making the C-series part optimal for space- and reliability-critical automotive sensor references.

Availability

BZX8850S-C9V1-QYL is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical monitors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term sourcing and AEC-Q101 compliance.

Supply support for BZX8850S-C9V1-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 space-constrained, low-power automotive and portable electronics applications.

FAQ

What is the maximum reverse current (I_R) specification for BZX8850S-C9V1-QYL at V_R = 7.3 V?

At V_R = 7.3 V and T_j = 25 °C, the typical reverse current is ≤ 0.1 µA, as confirmed in Table 8 of the datasheet for the C9V1 variant. This ultra-low leakage supports stable operation in high-impedance bias networks and extends battery life in always-on monitoring circuits.

Does BZX8850S-C9V1-QYL support reflow soldering with standard lead-free profiles?

Yes - the DFN1006BD-2 package is qualified for lead-free reflow per J-STD-020, with peak temperature up to 260 °C. Figure 10 provides the recommended solder land pattern, and the side-wettable flanks enable reliable joint formation and AOI verification without requiring special paste or process adjustments.

How does the +3.8 mV/K temperature coefficient affect regulation accuracy over temperature?

With a +3.8 mV/K coefficient, the Zener voltage increases by ~38 mV over a 10 °C rise. Over the full −55 °C to +150 °C range (205 K delta), total drift is ~780 mV - but within automotive cabin operating range (−40 °C to +85 °C), drift remains within ±48 mV (±0.53 % of 9.1 V), preserving system-level accuracy.

Is the cathode marking visible after reflow soldering?

Yes - the cathode is marked by a laser-etched bar on the top surface of the DFN1006BD-2 package, positioned adjacent to Pin 1. The marking remains fully legible post-reflow due to its depth and contrast, enabling manual and automated visual inspection even after soldering.

BZX8850S-C9V1-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):: 9.1 V

Tolerance:: ±5%

Power - Max:: 365 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 6.9 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -55°C ~ 150°C (TA)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DFN1006BD-2

BZX8850S-C9V1-QYL FAQ

1.How can I place an order for BZX8850S-C9V1-QYL through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX8850S-C9V1-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-C9V1-QYL reliable?

The price and inventory of BZX8850S-C9V1-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-C9V1-QYL is usually 5 days.

3.What payment methods are accepted for BZX8850S-C9V1-QYL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-C9V1-QYL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX8850S-C9V1-QYL?

BZX8850S-C9V1-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX8850S-C9V1-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-C9V1-QYL?

For technical support, including BZX8850S-C9V1-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-C9V1-QYL requirements.

6.How does Aetrix verify that BZX8850S-C9V1-QYL is sourced from the original manufacturer or authorized distributors?

All BZX8850S-C9V1-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-C9V1-QYL meets industry standards.

7.What is the process for return or replacement of BZX8850S-C9V1-QYL?

All BZX8850S-C9V1-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-C9V1-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-C9V1-QYL part is unused and in its original packaging.

Return procedure for BZX8850S-C9V1-QYL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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