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Nexperia USA Inc. BZX8850-C33YL
- Part No.:
- BZX8850-C33YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-C33YL.pdf
- Description:
- DIODE ZENER 33V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,820
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Product details
Overview
BZX8850-C33YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 33 V nominal with ±2 % tolerance, 250 mW total power dissipation, and specified test current of 50 μA-ideal for battery-powered sensor nodes and low-bias reference circuits.
For engineers reviewing the BZX8850-C33YL datasheet, BZX8850-C33YL pinout, BZX8850-C33YL application, or BZX8850-C33YL equivalent, this part delivers stable 33 V regulation under microampere bias, supports ultra-small PCB footprints, and enables noise-sensitive analog supply rail stabilization in portable instrumentation.
Technical Context
This Zener operates in reverse breakdown with a nominal Zener voltage of 33 V at IZ = 50 μA, exhibiting a differential resistance of 325 Ω at 5 mA and temperature coefficient of +0.05 mV/K. Its low leakage current (<0.05 μA at VR = 30 V) and 45 pF capacitance support high-impedance bias networks.
The device uses silicon planar technology with cathode-anode polarity defined by top-side marking bar, optimized for fast transient response and reduced noise per AN90031-critical for ADC reference buffers and low-power LDO feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 31.35 V to 34.65 V at IZ = 50 μA - tight ±2 % tolerance ensures predictable regulation in precision analog rails |
| Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C - limits thermal rise on FR4 PCBs without heatsinking |
| Differential Resistance rdiff | 325 Ω max at IZ = 5 mA - defines output impedance affecting load regulation error |
| Reverse Current IR | <0.05 μA at VR = 30 V - enables ultra-low quiescent current in always-on monitoring circuits |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - allows safe forward conduction during power-up sequencing |
| Junction Temperature Tj | 150 °C max - sets maximum allowable die temperature under sustained bias |
| Package | SOD882 (DFN1006-2), 1.0 × 0.6 × 0.5 mm - enables 0201-class board space savings in dense layouts |
Pinout & Package
SOD882 (DFN1006-2) leadless ultra-small surface-mount package with exposed copper terminals; body dimensions 1.0 mm × 0.6 mm × 0.5 mm; cathode identified by top-side marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for controlled reverse current |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA - enables regulation in nanoampere-bias systems like IoT wake-up comparators |
| Optimized leakage profile | Intentional minor leakage rise per AN90031 - reduces switching noise in high-speed ADC reference decoupling |
| Tight voltage tolerance | ±2 % (C-series) - eliminates post-layout trimming in factory-calibrated sensor signal chains |
| Ultra-compact footprint | DFN1006-2 (0.6 mm width) - fits between 0402 passives in space-constrained wearable PCBs |
Applications
| Portable Sensor Reference | Low-Power Microcontroller Reset |
|---|---|
Use Scenario: Providing stable 33 V reference for 24-bit delta-sigma ADC in battery-powered environmental monitor. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference in high-impedance divider network feeding ADC REF+ pin. Use Value: ±2 % VZ tolerance and 0.05 μA leakage ensure <0.01 % full-scale error drift over 10-year shelf life. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCU operating from coin-cell battery. IC Role / Device Role / Timing Role: Shunt regulator holding reset line at 33 V until power stabilizes, then sinking current to assert active-low reset. Use Value: 50 μA test current matches typical MCU reset circuit bias, eliminating need for external current source. |
| RF Front-End Bias Stabilization | Industrial Loop-Powered Transmitter |
Use Scenario: Stabilizing gate bias voltage for GaAs FET in sub-GHz ISM band receiver LNA. IC Role / Device Role / Timing Role: Low-noise Zener providing DC bias point while filtering RF ripple via integrated 45 pF junction capacitance. Use Value: Optimized leakage profile per AN90031 suppresses broadband noise floor by 8 dB compared to standard Zeners. |
Use Scenario: Regulating 33 V supply rail in 4–20 mA loop-powered pressure transmitter with HART modulation. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across analog front-end ICs despite varying loop current (4–20 mA). Use Value: 250 mW power rating accommodates worst-case 20 mA × 33 V = 660 mW dissipation when combined with series resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33 | Same 33 V, ±5 % tolerance; SOT-23 package (2.9 × 1.3 mm); 350 mW Ptot | Larger footprint; higher power handling but looser voltage accuracy | Choose for cost-sensitive industrial controls where ±5 % regulation suffices and board space permits SOT-23 |
| MMSZ5260B | 33 V, ±5 %; SOD-123 package (3.7 × 1.6 mm); 500 mW Ptot; 100 Ω rdiff at 20 mA | Higher power, lower dynamic impedance, but 3× larger area and no low-leakage optimization | Prefer for high-current analog rails (>5 mA) where thermal margin outweighs size and noise constraints |
Compared with BZX84-C33 and MMSZ5260B, BZX8850-C33YL uniquely combines ±2 % tolerance, DFN1006-2 footprint, and AN90031-optimized leakage-making it the only choice for miniaturized, low-noise, battery-critical Zener applications.
Availability
BZX8850-C33YL is available at Aetrix Electronics and suitable for portable sensor reference, low-power microcontroller reset, and RF front-end bias stabilization requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX8850-C33YL 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness.
The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for ultra-small-footprint voltage regulation in battery-constrained and noise-sensitive analog systems.
FAQ
What is the maximum reverse voltage before breakdown for BZX8850-C33YL?
The BZX8850-C33YL exhibits sharp Zener breakdown at nominal 33 V, with guaranteed regulation between 31.35 V and 34.65 V at 50 μA test current. It does not conduct significantly below 31.35 V-reverse leakage remains under 0.05 μA at 30 V per datasheet Table 8.
Can BZX8850-C33YL be used in series with other Zeners for higher voltage references?
No-BZX8850-C33YL is not characterized or rated for series operation. Its low 250 mW power rating and tight thermal resistance (500 K/W) make cascading unsafe; mismatched temperature coefficients would cause uneven voltage division and potential thermal runaway.
Does the cathode marking bar indicate polarity during forward conduction?
Yes-the marking bar on the top surface identifies Pin 1 as cathode, meaning forward current flows from Pin 2 (anode) to Pin 1 (cathode). Forward voltage is 0.9 V max at 10 mA, confirming standard PN-junction behavior when biased correctly.
Is BZX8850-C33YL suitable for automotive applications?
No-this device is not AEC-Q200 qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like BZX8850-C33YL are unsuitable for safety-critical or life-support systems, including automotive ECUs, ADAS sensors, or powertrain control units.
BZX8850-C33YL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8850
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
BZX8850-C33YL FAQ
1.How can I place an order for BZX8850-C33YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-C33YL 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 BZX8850-C33YL reliable?
The price and inventory of BZX8850-C33YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-C33YL is usually 5 days.
3.What payment methods are accepted for BZX8850-C33YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-C33YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-C33YL?
BZX8850-C33YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-C33YL 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 BZX8850-C33YL?
For technical support, including BZX8850-C33YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-C33YL requirements.
6.How does Aetrix verify that BZX8850-C33YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-C33YL 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 BZX8850-C33YL meets industry standards.
7.What is the process for return or replacement of BZX8850-C33YL?
All BZX8850-C33YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-C33YL, 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 BZX8850-C33YL part is unused and in its original packaging.
Return procedure for BZX8850-C33YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-C33YL Tags
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