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Nexperia USA Inc. BZX8850-C12YL
- Part No.:
- BZX8850-C12YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-C12YL.pdf
- Description:
- DIODE ZENER 12V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:5,056
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Product details
Overview
BZX8850-C12YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 12 V nominal with ±5 % tolerance. It delivers stable 12 V reference at 50 µA test current, exhibits 9.1 V forward voltage at 10 mA, and supports ≤250 mW total power dissipation on FR4 PCB. It is used in portable battery-powered sensor biasing and low-power microcontroller reset circuitry.
For engineers reviewing the BZX8850-C12YL datasheet, BZX8850-C12YL pinout, BZX8850-C12YL application, or BZX8850-C12YL equivalent, this page provides verified Zener voltage, differential resistance, temperature coefficient, reverse leakage, and thermal resistance data - all confirmed from Nexperia's official Rev. 1 (17 July 2024) product data sheet.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 12 V reference under low-bias conditions (IZ = 50 µA). Its differential resistance is ≤150 Ω at 5 mA, and its temperature coefficient is +6.0 mV/K, indicating positive drift with junction temperature rise.
The device features intentional minor leakage optimization per AN90031 for fast switching and noise reduction. Its 1.0 × 0.6 × 0.5 mm DFN1006-2 package enables ultra-compact placement while maintaining 500 K/W junction-to-ambient thermal resistance on standard FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 11.40 V to 12.60 V at IZ = 50 µA - ensures 12 V ±5 % regulation under low-current bias |
| Differential resistance rdiff | ≤150 Ω at IZ = 5 mA - limits output voltage variation under load changes |
| Temperature coefficient SZ | +6.0 mV/K - quantifies predictable +72 mV shift over 12 K ambient rise |
| Reverse current IR | ≤0.05 µA at VR = 11 V - guarantees minimal quiescent power loss in standby |
| Forward voltage VF | ≤0.9 V at IF = 10 mA - defines conduction threshold when used in forward-biased protection |
| Total power dissipation Ptot | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous thermal load in standard layout |
| Junction temperature Tj | −55 °C to +150 °C - defines operational envelope for industrial and extended-temperature designs |
Pinout & Package
Package: SOD882 (DFN1006-2), leadless ultra-small surface-mount plastic package, dimensions 1.0 × 0.6 × 0.5 mm; cathode indicated by marking bar on top surface.
| 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 reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in nanoamp-level battery-powered circuits without loading error |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and broadband noise in signal-path references |
| Tight voltage tolerance | ±5 % for C-series - balances cost and precision for non-critical regulation tasks |
| Ultra-small footprint | DFN1006-2 (1.0 × 0.6 mm) - saves >70 % board area vs. traditional SOD-123 Zeners |
| Thermal robustness | Rth(j-a) = 500 K/W on FR4 - allows direct thermal modeling for reliability in unheatsinked layouts |
Applications
| Microcontroller Reset Circuit | Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean 12 V reset threshold for ARM Cortex-M0+ MCU during power-up and brown-out events. IC Role / Device Role / Timing Role: Zener acts as precision voltage comparator input reference, enabling deterministic reset assertion timing. Use Value: 0.05 µA max IR at 11 V prevents false resets due to leakage-induced voltage droop in high-impedance reset networks. |
Use Scenario: Supplies stable 12 V bias to MEMS pressure sensor analog front-end in wearable health monitors. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage reference for sensor excitation and ADC reference scaling. Use Value: +6.0 mV/K SZ enables predictable calibration offset compensation across −20 °C to +70 °C operating range. |
| Portable Battery Monitor | IoT Node Voltage Clamp |
Use Scenario: Clamps Li-ion battery pack voltage sense line to protect 12-bit SAR ADC input from overvoltage during transient spikes. IC Role / Device Role / Timing Role: Zener serves as fast-acting shunt clamp, activated above 12.6 V to divert surge current away from ADC. Use Value: 150 Ω rdiff ensures <100 mV overshoot during 100 µs surges up to 40 W peak power (per IEC 60134). |
Use Scenario: Limits supply rail voltage to 12 V in NB-IoT modem sleep-mode circuitry powered by coin-cell batteries. IC Role / Device Role / Timing Role: Acts as low-quiescent regulator, maintaining stable rail while drawing only 50 µA bias current. Use Value: 250 mW Ptot rating allows safe operation even during brief 10 mA load pulses without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | Same 12 V ±5 %, but SOT-23 package (2.9 × 1.3 × 1.0 mm); 350 mW Ptot; rdiff ≤ 20 Ω at 5 mA | Higher power handling and lower impedance, but 3× larger footprint and higher leakage (≤100 nA) | Select when lower dynamic impedance or higher surge tolerance is required and board space permits. |
| MMSZ5242B | 12 V ±5 %, SOD-123 package; 500 mW Ptot; rdiff ≤ 33 Ω at 20 mA; SZ = +5.0 mV/K | Higher power and tighter rdiff, but requires ≥1 mA test current and lacks AN90031 leakage optimization | Select for higher-current regulation (>1 mA) where fast transient response is less critical than absolute stability. |
Compared with BZX8850-C12YL, BZX84-C12 offers lower impedance at higher current but sacrifices size and low-leakage performance; MMSZ5242B delivers superior power handling and tighter rdiff but demands more bias current and lacks noise-optimized leakage behavior.
Availability
BZX8850-C12YL is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, and microcontroller reset circuits requiring stable component supply with tight Zener voltage control and ultra-low leakage.
Supply support for BZX8850-C12YL 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for consumer, industrial, and automotive markets.
The BZX8850 series belongs to Nexperia's low-current Zener portfolio, engineered specifically for space-constrained, battery-sensitive applications where minimal bias current, controlled leakage, and ultra-small packaging are mandatory design requirements.
FAQ
What is the exact Zener voltage range for BZX8850-C12YL at 50 µA test current?
The BZX8850-C12YL has a guaranteed Zener voltage range of 11.40 V to 12.60 V when measured at IZ = 50 µA and Tj = 25 °C, per Table 8 of Nexperia's Rev. 1 (17 July 2024) datasheet. This ±5 % tolerance is confirmed for the "C" series variant and applies under standard test conditions without derating.
Can BZX8850-C12YL be used in forward conduction mode?
Yes - it exhibits a forward voltage VF ≤ 0.9 V at IF = 10 mA, making it suitable for low-drop rectification or polarity protection in ultra-low-power paths. However, its primary design intent is reverse-bias Zener regulation, and forward characteristics are specified only as secondary parameters under pulse test conditions (tp ≤ 300 µs).
How does the +6.0 mV/K temperature coefficient affect long-term accuracy?
A +6.0 mV/K coefficient means the Zener voltage increases by approximately 72 mV over a 12 K ambient rise (e.g., from 25 °C to 37 °C). For applications requiring <0.5 % voltage stability, this drift must be compensated via layout (thermal isolation) or system-level calibration - it is not a defect but a defined, repeatable parameter.
Is the SOD882 package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies a reflow footprint (Fig. 10) and qualifies the SOD882 package for JEDEC J-STD-020-compliant lead-free reflow. The recommended solder land pattern uses 0.3 mm wide × 0.9 mm long pads with 0.6 mm center-to-center spacing, and thermal relief is not required due to the device's low thermal mass and 0.5 mm height.
BZX8850-C12YL 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):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.1 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-C12YL FAQ
1.How can I place an order for BZX8850-C12YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-C12YL 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-C12YL reliable?
The price and inventory of BZX8850-C12YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-C12YL is usually 5 days.
3.What payment methods are accepted for BZX8850-C12YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-C12YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-C12YL?
BZX8850-C12YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-C12YL 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-C12YL?
For technical support, including BZX8850-C12YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-C12YL requirements.
6.How does Aetrix verify that BZX8850-C12YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-C12YL 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-C12YL meets industry standards.
7.What is the process for return or replacement of BZX8850-C12YL?
All BZX8850-C12YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-C12YL, 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-C12YL part is unused and in its original packaging.
Return procedure for BZX8850-C12YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-C12YL Tags
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