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Nexperia USA Inc. BZX8850S-C33-QYL
- Part No.:
- BZX8850S-C33-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-C33-QYL.pdf
- Description:
- DIODE ZENER 33V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:9,774
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Product details
Overview
BZX8850S-C33-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 delivers a nominal 33 V Zener voltage at 50 µA test current, with ±2 % tolerance (C-series), 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-C33-QYL datasheet, BZX8850S-C33-QYL pinout, BZX8850S-C33-QYL application, or BZX8850S-C33-QYL equivalent, this device is selected for ultra-low-bias voltage reference, ECU sensor biasing, and portable battery-powered voltage clamping where side-wettable flanks support automated optical inspection (AOI) and reliable reflow soldering on FR4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 31.35 V to 34.65 V at IZ = 50 µA, exhibiting a temperature coefficient of +7.5 mV/K and differential resistance of ≤325 Ω at IZ = 5 mA. Its low 50 µA test current enables stable regulation in micro-power systems where quiescent current must remain minimal.
The device uses a DFN1006BD-2 (SOD882BD) leadless package with side-wettable flanks, optimized for thermal performance on single-sided FR4 PCBs (Rth(j-a) = 340 K/W) and qualified per AEC-Q101 for under-hood automotive environments up to +150 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31.35 V to 34.65 V at IZ = 50 µA - defines precise regulation window for 33 V nominal reference |
| Tolerance | ±2 % (C-series) - ensures tight voltage accuracy without post-production trimming |
| Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive PCB layouts |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables low-loss forward conduction during transient overvoltage events |
| Reverse Current (IR) | ≤0.05 µA at VR = 25.3 V - guarantees minimal leakage in high-impedance bias networks |
| Thermal Resistance (Rth(j-a)) | 340 K/W - determines junction temperature rise under load on standard FR4 board |
| Package | DFN1006BD-2 (SOD882BD), 1.0 mm × 0.6 mm × 0.47 mm - enables <1 mm² footprint with AOI-compatible side-wettable flanks |
Pinout & Package
DFN1006BD-2 (SOD882BD) is a 2-terminal, leadless surface-mount package with side-wettable flanks for enhanced solder joint inspection and reliability. The cathode is marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker (bar) aligns with cathode for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics |
| Side-wettable flanks (SWF) | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield |
| Low 50 µA test current | Supports regulation in battery-powered sensors and IoT nodes where standby current must be sub-100 µA |
| Intentional minor leakage rise | Optimizes fast switching response and reduces noise in feedback loops of DC-DC converters |
| Ultra-small footprint | 1.0 mm × 0.6 mm area saves PCB real estate in multi-rail power management modules |
Applications
| Automotive Sensor Biasing | Portable Battery Protection |
|---|---|
|
Use Scenario: Providing stable 33 V reference for analog front-end circuits in vehicle speed or pressure sensors. IC Role / Device Role / Timing Role: Zener voltage reference element in bias network for op-amp input stages and ADC reference dividers. Use Value: Tight ±2 % tolerance and low 50 µA test current ensure accurate sensor signal conditioning across −40 °C to +125 °C ambient range. |
Use Scenario: Overvoltage clamping in USB-C PD adapter auxiliary power rails. IC Role / Device Role / Timing Role: Reverse-biased shunt regulator protecting LDO inputs from transient surges above 33 V. Use Value: 365 mW power rating and 325 Ω dynamic impedance limit clamp energy while maintaining fast response to 100 µs transients. |
| Industrial PLC Input Protection | Medical Wearable Reference |
|
Use Scenario: Input voltage limiting for 24 V industrial digital I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary shunt protection device placed before TVS diodes to absorb sustained overvoltage below surge threshold. Use Value: AEC-Q101 qualification and 150 °C max junction temperature allow reliable operation in uncooled DIN-rail enclosures. |
Use Scenario: Precision voltage reference for low-power ECG front-end amplifiers powered by coin-cell batteries. IC Role / Device Role / Timing Role: Stable Zener source enabling ratiometric measurement against internal ADC reference. Use Value: Sub-0.1 µA leakage at 25.3 V ensures >10-year battery life while maintaining 33 V reference stability within ±0.7 V over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850S-B33-Q | ±5 % tolerance (B-series), higher leakage at same VR, identical package and thermal specs | Suitable for non-critical biasing where cost sensitivity outweighs voltage accuracy | Select when ±5 % regulation window (31.35–34.65 V) is acceptable and leakage margin is relaxed |
| MMSZ5261B-TP | 33 V nominal, ±5 %, SOD-123 package (2.7 mm × 1.4 mm), 500 mW Ptot, no AEC-Q101 | Used in commercial-grade power supplies where larger footprint and non-automotive qualification are acceptable | Choose only for non-automotive designs requiring higher power margin and legacy footprint compatibility |
Compared with BZX8850S-C33-QYL, the BZX8850S-B33-Q trades voltage accuracy for cost in identical automotive-qualified packaging, while MMSZ5261B-TP offers higher power but lacks AEC-Q101 and occupies 4× more PCB area-making the C33-QYL optimal for space- and reliability-critical automotive sensor nodes.
Availability
BZX8850S-C33-QYL is available at Aetrix Electronics and suitable for automotive ECU design, portable medical instrumentation, and industrial PLC input protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8850S-C33-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 technologies.
The BZX8850S-Q series belongs to Nexperia's low-current Zener regulator portfolio, engineered specifically for precision voltage reference in space-constrained, low-power automotive and portable electronics where AEC-Q101 compliance and side-wettable flanks are mandatory.
FAQ
What is the maximum reverse voltage the BZX8850S-C33-QYL can withstand before breakdown?
The BZX8850S-C33-QYL has a nominal Zener voltage of 33 V, with guaranteed breakdown occurring between 31.35 V and 34.65 V at IZ = 50 µA. Its absolute maximum reverse voltage is not defined separately-the device is intended for controlled Zener operation within its specified VZ range, not avalanche blocking. Exceeding 34.65 V continuously risks thermal runaway due to its 365 mW power limit.
Does the "QYL" suffix indicate a specific tape-and-reel configuration or testing grade?
The "QYL" suffix denotes Nexperia's standard automotive-grade ordering variant for the BZX8850S-C33-Q series, including AEC-Q101 qualification, extended temperature screening (−55 °C to +150 °C), and packaging in 10,000-unit reels compatible with high-speed pick-and-place equipment. It does not indicate a special test bin or enhanced reliability grade beyond standard Q-series requirements.
Can BZX8850S-C33-QYL replace older BZX84-C33 in existing designs?
No-BZX8850S-C33-QYL uses a DFN1006BD-2 (1.0 mm × 0.6 mm) package with side-wettable flanks, while BZX84-C33 uses SOT-23 (3.0 mm × 1.4 mm). Footprint, solder profile, and thermal behavior differ significantly. Direct replacement requires PCB redesign, though electrical parameters (33 V, ±2 %, 365 mW) are functionally aligned for new designs prioritizing miniaturization and automotive compliance.
Is the 365 mW power rating valid at elevated ambient temperatures?
No-the 365 mW total power dissipation is rated only at Tamb ≤ 25 °C on a standard FR4 PCB with single-sided copper. Derating is required above 25 °C: Rth(j-a) = 340 K/W implies ~1.07 mW/°C reduction. At 85 °C ambient, maximum allowable power drops to approximately 160 mW to maintain Tj ≤ 150 °C, per the datasheet's thermal characteristics table.
BZX8850S-C33-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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25 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-C33-QYL FAQ
1.How can I place an order for BZX8850S-C33-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-C33-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-C33-QYL reliable?
The price and inventory of BZX8850S-C33-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-C33-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-C33-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-C33-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-C33-QYL?
BZX8850S-C33-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-C33-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-C33-QYL?
For technical support, including BZX8850S-C33-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-C33-QYL requirements.
6.How does Aetrix verify that BZX8850S-C33-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-C33-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-C33-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-C33-QYL?
All BZX8850S-C33-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-C33-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-C33-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-C33-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-C33-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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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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