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Nexperia USA Inc. BZX8850S-C43-QYL
- Part No.:
- BZX8850S-C43-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-C43-QYL.pdf
- Description:
- DIODE ZENER 43V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:3,644
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Product details
Overview
BZX8850S-C43-QYL from Nexperia is a low-current Zener voltage regulator diode in the BZX8850S-Q series, designed for precision biasing and voltage reference in space-constrained automotive and portable electronics. It delivers a nominal 43 V regulation at 50 µA test current, with ±5 % tolerance, 365 mW total power dissipation, and AEC-Q101 qualification for under-hood use.
For engineers reviewing the BZX8850S-C43-QYL datasheet, BZX8850S-C43-QYL pinout, BZX8850S-C43-QYL application, or BZX8850S-C43-QYL equivalent, this device is selected for low-leakage, low-power voltage stabilization where side-wettable flank solderability and thermal resistance (340 K/W) are critical to PCB-level reliability in high-temperature ambient environments.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 40.85 V to 45.15 V at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance of 375 Ω at IZ = 0.5 mA. Its low 50 µA test current enables stable regulation in ultra-low-power sensor bias networks.
The device uses a DFN1006BD-2 (SOD882BD) leadless package with side-wettable flanks for automated optical inspection (AOI) compatibility and enhanced solder joint integrity. Junction-to-ambient thermal resistance is 340 K/W on FR4 PCB with single-sided copper, supporting operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 43 V (range 40.85 V to 45.15 V at IZ = 50 µA - defines stable reference point for low-current bias circuits) |
| Tolerance | ±5 % (C-series grade - enables cost-optimized selection where tighter regulation is not required) |
| Test Current | 50 µA (enables reliable operation in battery-powered systems drawing sub-100 µA quiescent current) |
| Total Power Dissipation | 365 mW at Tamb ≤ 25 °C (sets maximum continuous DC power handling on standard FR4 PCB) |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA (ensures minimal forward conduction loss when used in dual-direction protection or clamping configurations) |
| Junction Temperature Limit | 150 °C (supports automotive under-hood deployment without derating below −40 °C to +125 °C ambient) |
| AEC-Q101 Qualified | Yes (certified for automotive discrete semiconductor stress testing - validates robustness for safety-critical subsystems) |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount plastic package measuring 1.0 mm × 0.6 mm × 0.47 mm with side-wettable flanks for AOI-compatible reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar on top surface identifies this terminal - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path enabling controlled breakdown at VZ |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection of solder joints on DFN package - critical for zero-defect automotive manufacturing |
| Low test current (50 µA) | Supports stable voltage reference in micro-power sensor interfaces and battery monitoring ICs with nanoamp bias currents |
| Optimized leakage profile | Intentional minor rise in leakage current improves switching speed and reduces noise in feedback loops of LDOs and ADC references |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTRB, HTGB, and temperature cycling - suitable for engine control and ADAS modules |
Applications
| Automotive Cabin Sensor Biasing | Portable Gas Detector Reference |
|---|---|
Use Scenario: Providing stable 43 V bias to MEMS pressure transducers in HVAC control modules within vehicle cabins. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix analog front-end common-mode voltage. Use Value: ±5 % tolerance and 375 Ω dynamic impedance ensure <±15 mV drift over −40 °C to +85 °C, meeting ASIL-B signal conditioning requirements. |
Use Scenario: Supplying precise reference voltage to electrochemical gas sensor amplifiers in handheld CO/NO2 detectors. IC Role / Device Role / Timing Role: Low-current Zener regulator establishing fixed bias point for transimpedance amplifier input stage. Use Value: 50 µA test current matches typical sensor bias current budgets, minimizing battery drain while maintaining 43 V stability across 10-year shelf life. |
| Industrial PLC Input Protection | Medical Infusion Pump Voltage Clamp |
Use Scenario: Clamping transient overvoltage on 24 V DC fieldbus inputs of programmable logic controllers exposed to inductive load switching. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting shunt limiter during EFT bursts and surge events. Use Value: 365 mW power rating and 40 W non-repetitive peak dissipation (tp = 100 µs) absorb IEC 61000-4-4 Level 4 surges without degradation. |
Use Scenario: Stabilizing reference voltage for microcontroller ADC channels monitoring motor current in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Precision Zener providing temperature-stable 43 V reference for ratiometric current sensing calibration. Use Value: +0.05 mV/K temperature coefficient limits reference drift to <±0.5 mV over pump operating range (0–40 °C), ensuring ±0.1 mL/hr dosing accuracy. |
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-B43-Q | ±2 % tolerance (vs. ±5 %), higher test current (5 mA), lower rdiff (150 Ω) | Better regulation accuracy but higher bias current demand - unsuitable for nanoamp-sensor nodes | Select when system requires tighter voltage stability and can supply ≥5 mA Zener current |
| MMSZ43ET1G | SOD-123 package (2.7 mm × 1.6 mm), 500 mW Ptot, ±5 %, 5 mA test current | Larger footprint and higher thermal resistance (250 K/W) - less suitable for dense automotive PCBs | Choose only if legacy SOD-123 layout reuse is mandatory and space constraints allow |
Compared with BZX8850S-C43-QYL, the BZX8850S-B43-Q offers superior regulation accuracy at higher current, while MMSZ43ET1G trades miniaturization for higher power handling and legacy compatibility - neither provides side-wettable flanks or AEC-Q101 validation in the same form factor.
Availability
BZX8850S-C43-QYL is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical devices, industrial PLC input stages, and battery-powered sensor nodes requiring stable component supply with full traceability and long-lifecycle support.
Supply support for BZX8850S-C43-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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for automotive, industrial, and mobile markets.
The BZX8850S-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for low-power voltage reference and regulation in space-constrained, thermally demanding automotive and portable applications.
FAQ
What is the exact Zener voltage range for BZX8850S-C43-QYL at 50 µA?
The confirmed Zener voltage range is 40.85 V to 45.15 V at IZ = 50 µA and Tj = 25 °C, per Table 9 of the official Nexperia datasheet Rev. 3. This 4.3 V span reflects the ±5 % tolerance band specific to the 'C' grade variant and is measured under standardized low-current conditions to ensure repeatability in ultra-low-power designs.
Does BZX8850S-C43-QYL support reflow soldering with standard lead-free profiles?
Yes - the DFN1006BD-2 package is qualified for IPC/JEDEC J-STD-020-compliant lead-free reflow, with peak temperatures up to 260 °C. The side-wettable flanks enable reliable solder joint formation and automated optical inspection, and the recommended footprint (Fig. 10) specifies 0.6 mm pad width and 0.7 mm length for optimal wetting and coplanarity control.
How does the 'QYL' suffix differ from standard 'Q' in ordering?
The 'QYL' suffix denotes a specific tape-and-reel packaging configuration per Nexperia's internal logistics coding: 10,000 units per 12 mm wide reel with 1 mm pitch, EIA-481-D compliant embossed carrier tape, and dry-packed moisture sensitivity level 1 (MSL-1) handling. It does not affect electrical or mechanical specifications versus the base 'Q' grade.
Can BZX8850S-C43-QYL be used in place of a 43 V TVS diode for ESD protection?
No - it is not rated for ESD or surge suppression. While it clamps above 43 V in reverse bias, its 40 W non-repetitive peak power rating applies only to 100 µs square-wave pulses (IEC 61000-4-5), not the 15 kV HBM or 8 kV IEC 61000-4-2 waveforms required for ESD protection. Dedicated TVS devices like PESD5V0S1BA have optimized capacitance and clamping response for that function.
BZX8850S-C43-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.6 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-C43-QYL FAQ
1.How can I place an order for BZX8850S-C43-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-C43-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-C43-QYL reliable?
The price and inventory of BZX8850S-C43-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-C43-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-C43-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-C43-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-C43-QYL?
BZX8850S-C43-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-C43-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-C43-QYL?
For technical support, including BZX8850S-C43-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-C43-QYL requirements.
6.How does Aetrix verify that BZX8850S-C43-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-C43-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-C43-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-C43-QYL?
All BZX8850S-C43-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-C43-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-C43-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-C43-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-C43-QYL Tags
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