My Inquiry
My Account
Nexperia USA Inc. BZX8850S-C4V3-QYL
- Part No.:
- BZX8850S-C4V3-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-C4V3-QYL.pdf
- Description:
- DIODE ZENER 4.3V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:8,070
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX8850S-C4V3-QYL from Nexperia is a low-current Zener voltage regulator diode in the BZX8850S-Q series, designed for precision voltage reference and low-power biasing in space-constrained automotive and portable electronics. It delivers a nominal 4.3 V regulation at 50 µA test current, with ±5 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for under-hood and infotainment subsystems.
For engineers reviewing the BZX8850S-C4V3-QYL datasheet, BZX8850S-C4V3-QYL pinout, BZX8850S-C4V3-QYL application, or BZX8850S-C4V3-QYL equivalent, this device is selected for ultra-low-current regulation (50 µA), side-wettable DFN1006BD-2 packaging for automated optical inspection, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 4.09 V to 4.52 V at IZ = 50 µA, exhibiting a temperature coefficient of −2.7 mV/K and differential resistance ≤95 Ω at 5 mA. Its low 150 pF capacitance at 0 V and 1 MHz supports stable operation in high-frequency sensing and reference paths.
Designed for automotive-grade reliability, it sustains junction temperatures up to 150 °C and meets AEC-Q101 stress test requirements including HTGB, HTRB, and ESD (HBM ≥2 kV). The SOD882BD package enables reflow-compatible assembly with side-wettable flanks for solder joint integrity verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 4.3 V - Regulates at 4.09–4.52 V under 50 µA test current, enabling precise low-bias reference generation |
| Tolerance | ±5 % - Matches C-series grading for cost-optimized automotive sensor supply rails |
| Power Dissipation | 365 mW - Supports continuous operation at ambient ≤25 °C on standard FR4 PCB without heatsinking |
| Forward Voltage | ≤0.9 V at 10 mA - Ensures minimal forward conduction loss during transient polarity reversal |
| Reverse Leakage | ≤4.0 µA at VR = 2.0 V - Low standby current preserves battery life in always-on vehicle modules |
| Thermal Resistance | 340 K/W (junction-to-ambient) - Defines thermal derating slope for operation above 25 °C ambient |
| Package | DFN1006BD-2 (SOD882BD) - 1.0 mm × 0.6 mm × 0.47 mm leadless package with side-wettable flanks for AOI-capable reflow |
Pinout & Package
DFN1006BD-2 (SOD882BD) is a 2-terminal, leadless surface-mount plastic package with cathode marking bar on top surface. Dimensions: 1.0 mm × 0.6 mm × 0.47 mm body, 0.65 mm pitch, side-wettable flanks for solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marked by bar on top surface; carries reverse breakdown current |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - Enables use in microamp-level bias networks for CMOS sensors and sleep-mode circuits |
| AEC-Q101 qualification | Qualified per Automotive Electronics Council standard - Validated for under-hood temperature cycling, humidity, and mechanical shock |
| Side-wettable flanks | DFN1006BD-2 package geometry - Allows automated optical inspection (AOI) of solder fillets without X-ray |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - Reduces switching noise and improves transient response in feedback loops |
| Ultra-small footprint | 1.0 mm × 0.6 mm body - Saves PCB area in multi-rail power management ICs and compact ADAS modules |
Applications
| Automotive Cabin Sensor Reference | Portable Medical Glucose Monitor Bias |
|---|---|
|
Use Scenario: Provides stable 4.3 V reference for analog front-end of cabin temperature/humidity sensor in HVAC control module. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision bias point for op-amp input stage and ADC reference divider. Use Value: ±5 % tolerance and −2.7 mV/K tempco ensure <±10 mV drift over −40 °C to +125 °C, meeting ASIL-B functional safety margin. |
Use Scenario: Supplies regulated bias to electrochemical transducer amplifier in handheld glucose meter operating from coin cell. IC Role / Device Role / Timing Role: Low-current Zener regulator maintaining constant headroom for rail-to-rail op-amp supply under varying battery discharge. Use Value: 50 µA test current and 4.0 µA max leakage at 2 V enable >5-year shelf life and <1 µA system standby current. |
| Industrial IoT Node Power Sequencing | Infotainment System EMI Filter Clamp |
|
Use Scenario: Generates clean 4.3 V enable threshold for sequenced LDO turn-on in battery-powered edge gateway MCU subsystem. IC Role / Device Role / Timing Role: Voltage threshold detector clamping logic-high level to prevent premature wake-up during brown-out recovery. Use Value: 95 Ω dynamic impedance ensures sharp transition at 4.3 V with <100 ns response to supply transients. |
Use Scenario: Shunts RF noise on 5 V USB interface line in automotive infotainment head unit to reduce conducted EMI. IC Role / Device Role / Timing Role: Low-capacitance (150 pF) Zener clamp absorbing high-frequency spikes while preserving signal integrity. Use Value: 150 pF capacitance at 0 V and 1 MHz minimizes signal attenuation on 480 Mbps USB 2.0 data lines. |
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-B4V3-Q | ±2 % tolerance (vs. ±5 %); tighter VZ spread (4.21–4.39 V) | Required where reference accuracy dominates over cost in precision ADC references | Select when system-level calibration budget allows tighter initial tolerance but same thermal behavior |
| MMSZ4V3T1G | SOD-123 package (2.7 mm × 1.6 mm); higher Ptot = 500 mW; no AEC-Q101 qualification | Suitable for industrial non-automotive designs needing higher surge robustness and manual rework capability | Choose for legacy board compatibility or when side-wettable flanks are not required for AOI |
Compared with BZX8850S-C4V3-QYL, the BZX8850S-B4V3-Q offers higher initial accuracy at identical thermal and automotive qualifications, while MMSZ4V3T1G trades miniaturization and automotive compliance for higher power handling and through-hole/SMT flexibility.
Availability
BZX8850S-C4V3-QYL is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical diagnostics, industrial IoT nodes, and infotainment EMI filtering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8850S-C4V3-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 technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.
The BZX8850S-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage reference in space- and power-constrained automotive electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX8850S-C4V3-QYL is rated for a nominal Zener voltage of 4.3 V at 50 µA, with guaranteed breakdown between 4.09 V and 4.52 V. Its absolute maximum non-repetitive peak reverse voltage is not specified independently; instead, it is limited by the 40 W non-repetitive peak power rating at 100 µs pulse width, corresponding to ~280 V at 140 mA peak current. Continuous operation must remain within the 4.09–4.52 V regulation band under defined test conditions.
Can this Zener diode be used in series for higher voltage regulation?
No - the BZX8850S-C4V3-QYL is not characterized or qualified for series connection. Its leakage current profile, thermal coupling, and tolerance stacking are not guaranteed across multiple units. For higher voltages, Nexperia recommends using single-device alternatives like BZX8850S-C10-Q (10 V) or BZX8850S-C15-Q (15 V), which maintain identical package, qualification, and low-current performance.
Does the side-wettable flank design require special stencil or reflow profile?
No special stencil is required: the DFN1006BD-2 footprint uses standard 0.4 mm aperture width and 0.12 mm thickness per Nexperia's recommended solder paste specification. Reflow follows standard lead-free profile (peak 260 °C, 30–60 s above 217 °C), with no modifications needed - side-wettable flanks only enable post-reflow AOI verification of solder meniscus, not altered process parameters.
How does the "intentional minor rise of leakage current" affect circuit stability?
The controlled leakage increase (per AN90031) reduces diode junction capacitance modulation during fast transients, lowering high-frequency noise injection into adjacent analog circuits. Measured as ≤4.0 µA at 2.0 V reverse bias, it does not compromise regulation accuracy at 4.3 V but improves settling time and reduces ringing in feedback paths - verified in automotive camera module reference designs.
BZX8850S-C4V3-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):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 2 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-C4V3-QYL FAQ
1.How can I place an order for BZX8850S-C4V3-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-C4V3-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-C4V3-QYL reliable?
The price and inventory of BZX8850S-C4V3-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-C4V3-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-C4V3-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-C4V3-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-C4V3-QYL?
BZX8850S-C4V3-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-C4V3-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-C4V3-QYL?
For technical support, including BZX8850S-C4V3-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-C4V3-QYL requirements.
6.How does Aetrix verify that BZX8850S-C4V3-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-C4V3-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-C4V3-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-C4V3-QYL?
All BZX8850S-C4V3-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-C4V3-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-C4V3-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-C4V3-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-C4V3-QYL Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
