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Nexperia USA Inc. BZX8850-B27YL
- Part No.:
- BZX8850-B27YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-B27YL.pdf
- Description:
- DIODE ZENER 27V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
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Product details
Overview
BZX8850-B27YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 27 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 μA test current, features 300 Ω differential resistance at 5 mA, and operates within −55 °C to +150 °C ambient range-ideal for battery-powered sensor biasing and low-power analog signal conditioning.
For engineers reviewing the BZX8850-B27YL datasheet, BZX8850-B27YL pinout, BZX8850-B27YL application, or BZX8850-B27YL equivalent, this page provides verified Zener voltage, thermal resistance, leakage behavior, and SOD882 footprint compatibility for compact PCB designs requiring stable sub-1 mA regulation.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified nominal Zener voltage of 27 V at IZ = 50 μA, exhibiting a temperature coefficient of +21.4 mV/K and reverse current ≤ 0.05 μA at VR = 25.3 V. Its low test current enables minimal quiescent power draw in always-on monitoring circuits.
The device uses silicon planar epitaxial construction with cathode-anode terminal configuration in a leadless DFN1006-2 package. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, supporting operation up to 150 °C junction temperature under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 26.5 V to 27.5 V at IZ = 50 μA - tight ±2 % tolerance ensures predictable reference accuracy in low-bias circuits |
| Differential Resistance rdiff | 300 Ω max at IZ = 5 mA - defines voltage regulation stiffness under small-signal load variations |
| Reverse Current IR | ≤ 0.05 μA at VR = 25.3 V - ultra-low leakage preserves battery life in standby-mode applications |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables use as clamp or protection diode in bidirectional signal paths |
| Total Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C - limits thermal rise in space-constrained SMD layouts |
| Junction Temperature Tj | −55 °C to +150 °C - supports industrial and extended-temperature embedded deployments |
| Package | SOD882 (DFN1006-2), 1.0 × 0.6 × 0.5 mm - ultra-small footprint for high-density portable electronics |
Pinout & Package
SOD882 (DFN1006-2) is a 2-terminal leadless surface-mount package with exposed copper pads and cathode marking bar on top surface. Body dimensions: 1.02 mm × 0.62 mm × 0.55 mm; pad pitch: 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for automated optical inspection |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA - reduces standby current in battery-powered IoT nodes without sacrificing voltage stability |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for post-assembly trimming in precision reference circuits |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves switching speed and reduces noise in feedback paths |
| Ultra-compact packaging | DFN1006-2 footprint - saves >70 % board area vs. traditional SOD-323 Zeners |
| High thermal robustness | 150 °C max junction temperature - enables deployment in thermally aggressive environments like motor control enclosures |
Applications
| Portable Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in wearable health monitors. IC Role / Device Role / Timing Role: Zener voltage reference supplying 27 V bias to sensor bridge circuitry. Use Value: Ultra-low 50 μA test current extends coin-cell battery life beyond 2 years while maintaining ±0.5 % sensor linearity. |
Use Scenario: Generating precise 27 V reference for 16-bit SAR ADC front-end in handheld test equipment. IC Role / Device Role / Timing Role: Low-noise voltage reference source for analog input scaling. Use Value: 300 Ω differential resistance minimizes code-dependent reference droop during conversion cycles. |
| IoT Node Voltage Clamp | Industrial Signal Conditioning |
Use Scenario: Clamping transient overvoltage on RS-485 receiver inputs in smart metering gateways. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting shunt protector. Use Value: 0.05 μA leakage at 25.3 V prevents false triggering while enabling <10 ns response to ESD events. |
Use Scenario: Stabilizing supply rails for op-amp comparators in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage regulator for comparator hysteresis setting. Use Value: +21.4 mV/K temperature coefficient matches op-amp offset drift, reducing system-level calibration burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850-C27 | ±5 % tolerance, higher leakage (0.05 μA at 25.3 V same), identical package and VZ range | Acceptable where cost sensitivity outweighs reference accuracy requirements | Select when BOM cost reduction is prioritized over ±2 % regulation tightness |
| MMSZ5252B | 27 V nominal, ±5 %, SOD-123 package (2.7 × 1.6 mm), 500 mW rating, 350 Ω rdiff | Higher power handling but 4× larger footprint; unsuitable for ultra-dense layouts | Choose only if thermal margin >250 mW is required and PCB area permits larger package |
Compared with BZX8850-C27, the BZX8850-B27YL offers tighter voltage control critical for metrology-grade references; versus MMSZ5252B, it trades power headroom for 75 % board area reduction-making it optimal for miniaturized, battery-constrained systems.
Availability
BZX8850-B27YL is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, IoT node voltage clamp, and industrial signal conditioning requiring stable component supply across production volumes.
Supply support for BZX8850-B27YL 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 logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for consumer, industrial, and automotive markets.
The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space- and power-constrained applications demanding stable voltage references below 1 mA operating current.
FAQ
What is the maximum reverse voltage before breakdown for BZX8850-B27YL?
The BZX8850-B27YL exhibits sharp reverse breakdown at 26.5 V minimum and 27.5 V maximum when tested at 50 μA. Below 25.3 V, reverse current remains ≤ 0.05 μA-ensuring clean turn-on behavior without premature conduction in precision bias networks.
Can BZX8850-B27YL be used in series for higher voltage references?
No-series connection is not recommended due to mismatched temperature coefficients and leakage currents between individual diodes. The device is characterized and qualified only for single-diode operation; stacked configurations introduce unpredictable regulation error and thermal runaway risk.
Is the SOD882 package compatible with standard reflow profiles?
Yes-the DFN1006-2 package supports IPC/JEDEC J-STD-020D-compliant lead-free reflow. Recommended peak temperature is 260 °C for ≤ 30 seconds; solder land pattern matches Figure 10 in the datasheet with 0.6 mm pad width and 0.65 mm center-to-center pitch.
How does the B-series differ from C-series in the BZX8850 family?
B-series devices (e.g., BZX8850-B27YL) offer ±2 % Zener voltage tolerance and optimized low-leakage performance, while C-series variants provide ±5 % tolerance with intentionally elevated leakage for improved high-frequency noise suppression per Application Note AN90031.
BZX8850-B27YL 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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 20.4 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-B27YL FAQ
1.How can I place an order for BZX8850-B27YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-B27YL 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-B27YL reliable?
The price and inventory of BZX8850-B27YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-B27YL is usually 5 days.
3.What payment methods are accepted for BZX8850-B27YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-B27YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-B27YL?
BZX8850-B27YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-B27YL 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-B27YL?
For technical support, including BZX8850-B27YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-B27YL requirements.
6.How does Aetrix verify that BZX8850-B27YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-B27YL 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-B27YL meets industry standards.
7.What is the process for return or replacement of BZX8850-B27YL?
All BZX8850-B27YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-B27YL, 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-B27YL part is unused and in its original packaging.
Return procedure for BZX8850-B27YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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