My Inquiry
My Account
Nexperia USA Inc. BZX8850-C3V9YL
- Part No.:
- BZX8850-C3V9YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-C3V9YL.pdf
- Description:
- DIODE ZENER 3.9V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:3,309
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX8850-C3V9YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 3.9 V nominal with ±2 % tolerance, 50 µA test current, and 250 mW power dissipation-used in battery-powered sensor nodes and low-bias reference circuits.
For engineers reviewing the BZX8850-C3V9YL datasheet, BZX8850-C3V9YL pinout, BZX8850-C3V9YL application, or BZX8850-C3V9YL equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, cathode/anode terminal mapping, and SOD882 footprint compatibility for compact PCB designs.
Technical Context
This Zener operates in reverse breakdown with a specified working voltage of 3.70 V to 4.10 V at IZ = 50 µA, exhibiting a typical differential resistance of 95 Ω at 5 mA and a negative temperature coefficient of −2.7 mV/K-enabling stable low-power biasing across ambient temperatures from −55 °C to +150 °C.
Its ultra-small DFN1006-2 package features a 1.0 mm × 0.6 mm body and 0.5 mm height, with cathode marked by a bar on the top surface; thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous power handling under natural convection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.70 V to 4.10 V at IZ = 50 µA - defines precise regulation point for low-current references |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance rdiff | 95 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient SZ | −2.7 mV/K - quantifies voltage drift per degree Celsius for thermal stability analysis |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - constrains forward conduction loss in dual-direction protection schemes |
| Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C - sets maximum steady-state thermal budget on standard FR4 PCB |
| Junction Temperature | 150 °C max - defines absolute upper limit for reliable silicon operation |
Pinout & Package
SOD882 (DFN1006-2) leadless ultra-small plastic package: 1.0 mm × 0.6 mm × 0.5 mm body, 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 microampere-bias circuits like RTC backup rails and IoT wake-up monitors |
| Ultra-compact packaging | SOD882 (DFN1006-2) footprint - saves >70 % board area vs. SOD-123, critical for wearables and hearing aids |
| Controlled leakage behavior | Optimized minor leakage rise per AN90031 - improves switching speed and reduces noise in signal conditioning paths |
| Two tolerance grades | ±2 % (C-series) and ≈±5 % (B-series) - allows cost/performance trade-off in volume production |
Applications
| Portable Sensor Biasing | RTC Backup Voltage Reference |
|---|---|
Use Scenario: Providing stable 3.9 V bias to MEMS accelerometers and analog front-ends in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed operating point for signal chain amplifiers and ADCs. Use Value: Low 50 µA test current minimizes drain on coin-cell batteries, extending field deployment life beyond 5 years. |
Use Scenario: Maintaining accurate timekeeping during main power loss in smart meters and industrial controllers. IC Role / Device Role / Timing Role: Precision shunt regulator holding VBACKUP within ±2 % for real-time clock ICs requiring stable 3.3–4.0 V supply. Use Value: Tight ±2 % tolerance and −2.7 mV/K TC ensure <±10 ppm/day time error over −40 °C to +85 °C operating range. |
| Low-Power Microcontroller Reset Circuit | ESD-Sensitive Signal Clamping |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCUs in energy-harvesting edge nodes. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering POR or brown-out detection at 3.9 V. Use Value: 95 Ω differential resistance ensures fast response to supply droop, reducing false resets during transient loads. |
Use Scenario: Protecting high-impedance analog inputs (e.g., pH probes, thermocouples) from ESD transients. IC Role / Device Role / Timing Role: Low-capacitance (150 pF) shunt clamp diverting sub-100 ns spikes before IC input stages. Use Value: 150 pF capacitance at 0 V bias preserves signal integrity up to 10 MHz while clamping to 3.9 V ±2 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V9 | SC-70 package (2.2 mm × 1.35 mm), 350 mW Ptot, ±5 % tolerance | Larger footprint and looser tolerance; higher power but less space-efficient | Select when board layout allows larger device and ±5 % regulation accuracy suffices |
| MMSZ4685 | SOD-123 package (3.7 mm × 1.6 mm), 500 mW Ptot, ±5 % tolerance, 100 Ω rdiff | Higher power rating but 3.7× larger area; same TC and capacitance as BZX8850-C3V9YL | Choose for legacy designs using SOD-123 footprints or where thermal margin exceeds 250 mW |
Compared with BZX84-C3V9 and MMSZ4685, the BZX8850-C3V9YL offers superior space efficiency (1.0 mm × 0.6 mm), tighter ±2 % tolerance, and lower 50 µA test current-making it optimal for next-generation ultra-compact, battery-sensitive systems where regulation accuracy and standby current dominate selection criteria.
Availability
BZX8850-C3V9YL is available at Aetrix Electronics and suitable for portable sensor biasing, RTC backup voltage reference, and low-power microcontroller reset circuits requiring stable component supply with guaranteed long-term traceability.
Supply support for BZX8850-C3V9YL 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 leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space-constrained, battery-powered applications demanding tight voltage tolerance and minimal quiescent current.
FAQ
What is the maximum reverse voltage this Zener can regulate continuously?
The BZX8850-C3V9YL is rated for continuous Zener operation up to its nominal 3.9 V working voltage, with absolute maximum reverse voltage limited by its 250 mW power dissipation at 25 °C ambient. At higher ambient temperatures, derating applies per the 500 K/W thermal resistance-e.g., at 85 °C ambient, maximum continuous power drops to ~150 mW, limiting usable reverse current to ~38 mA.
Does this part have a specified Zener impedance at 1 mA?
Yes-per Table 8, the differential resistance rdiff is 95 Ω maximum at IZ = 5 mA, and the typical value at IZ = 1 mA is 600 Ω. This higher impedance at low current reflects the nonlinear region near knee voltage and must be accounted for in low-current reference designs where regulation stiffness matters.
Can this Zener be used in forward conduction mode?
Yes-the forward voltage is specified at 0.9 V maximum at 10 mA, making it suitable as a low-drop rectifier or level-shifter in bidirectional protection circuits. However, its primary design intent and characterization are for reverse-bias Zener regulation; forward characteristics are secondary and not optimized for high-current switching.
How does the cathode marking appear on the SOD882 package?
The cathode is marked by a visible bar on the top surface of the DFN1006-2 package, aligned with pin 1 per the simplified outline in Figure 9. The marking is laser-etched or molded into the plastic body and appears as a thin, straight line parallel to the short edge of the 1.0 mm × 0.6 mm footprint-consistent with industry-standard polarity identification for ultra-small leadless diodes.
BZX8850-C3V9YL 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):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 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-C3V9YL FAQ
1.How can I place an order for BZX8850-C3V9YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-C3V9YL 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-C3V9YL reliable?
The price and inventory of BZX8850-C3V9YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-C3V9YL is usually 5 days.
3.What payment methods are accepted for BZX8850-C3V9YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-C3V9YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-C3V9YL?
BZX8850-C3V9YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-C3V9YL 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-C3V9YL?
For technical support, including BZX8850-C3V9YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-C3V9YL requirements.
6.How does Aetrix verify that BZX8850-C3V9YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-C3V9YL 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-C3V9YL meets industry standards.
7.What is the process for return or replacement of BZX8850-C3V9YL?
All BZX8850-C3V9YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-C3V9YL, 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-C3V9YL part is unused and in its original packaging.
Return procedure for BZX8850-C3V9YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-C3V9YL Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
