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Nexperia USA Inc. BZX8850-B4V7YL
- Part No.:
- BZX8850-B4V7YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-B4V7YL.pdf
- Description:
- DIODE ZENER 4.7V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,553
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Product details
Overview
BZX8850-B4V7YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 4.7 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 μA test current, exhibits 600 Ω differential resistance at IZ = 50 μA, and supports ambient temperatures from −55 °C to +150 °C - ideal for battery-powered sensor biasing and low-power analog signal conditioning.
For engineers reviewing the BZX8850-B4V7YL datasheet, BZX8850-B4V7YL pinout, BZX8850-B4V7YL application, or BZX8850-B4V7YL equivalent, this device serves as a compact, low-leakage voltage reference in space-constrained portable electronics where minimal quiescent current and tight voltage accuracy are critical selection criteria.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 4.7 V at IZ = 50 μA, maintaining regulation across a 1 μA–5 mA current range. Its temperature coefficient is −2.7 mV/K, enabling predictable drift compensation in temperature-sensitive references.
The device features a low 140 pF junction capacitance at VR = 0 V and f = 1 MHz, minimizing high-frequency coupling in filtering applications, and achieves ≤ 250 mW total power dissipation on FR4 PCB with single-sided copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.61 V to 4.79 V at IZ = 50 μA - ensures ±2 % accuracy for stable low-current reference generation |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 50 μA - defines voltage regulation stiffness under light-load variations |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - enables use as low-drop rectifier or clamp in dual-polarity circuits |
| Reverse Current (IR) | ≤ 3.0 μA at VR = 4.7 V - guarantees minimal leakage in battery-critical standby paths |
| Power Dissipation (Ptot) | 250 mW max at Tamb ≤ 25 °C - sets thermal design margin for PCB layout without heatsinking |
| Junction Temperature (Tj) | 150 °C max - supports operation in industrial ambient environments up to +125 °C with derating |
| Package | SOD882 (DFN1006-2), 1.0 × 0.6 × 0.5 mm - enables 0201-class board area usage with solderable side terminals |
Pinout & Package
SOD882 (DFN1006-2) is a leadless, surface-mount plastic package with two terminals on opposing sides; cathode is marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity must be observed for correct Zener conduction |
| 2 (A) | Anode | Connected to ground or lower potential; forms reverse-biased junction with cathode |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA - reduces system quiescent current in always-on sensor nodes |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for post-calibration trimming in precision references |
| Ultra-small footprint | DFN1006-2 (0.6 mm width) - fits high-density layouts in wearables and IoT edge nodes |
| Controlled leakage profile | Optimized fast switching & noise reduction per AN90031 - improves transient response in feedback loops |
| High-temperature capability | Rated to +150 °C junction - supports under-hood or enclosed industrial enclosure deployment |
Applications
| Portable Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Zener voltage reference supplying fixed 4.7 V bias to sensor bridge, operating continuously at <10 μA quiescent current. Use Value: Enables >5-year battery life while maintaining ±0.5 % sensor full-scale accuracy over −25 °C to +70 °C. |
Use Scenario: Generating precise 4.7 V reference for 12-bit SAR ADCs in handheld medical diagnostic tools. IC Role / Device Role / Timing Role: Low-noise analog voltage reference replacing larger TL431-based solutions in compact PCB layouts. Use Value: Reduces reference circuit area by 65 % and eliminates external capacitor requirements due to inherent stability at 50 μA. |
| USB-C Power Negotiation Clamp | IoT Node Reset Supervisor |
Use Scenario: Clamping CC line voltage during USB-C port detection to prevent overvoltage damage to controller GPIOs. IC Role / Device Role / Timing Role: Fast-response Zener clamp protecting 3.3 V logic inputs against 5.5 V transients on Type-C configuration channels. Use Value: Limits clamping voltage to 4.7 V ±2 % with <1 ns response, avoiding false detection while preserving signal integrity. |
Use Scenario: Monitoring 5 V rail in LoRaWAN end-node gateways to trigger MCU reset if supply drops below 4.5 V. IC Role / Device Role / Timing Role: Precision undervoltage detector using resistor divider + BZX8850-B4V7YL as threshold reference. Use Value: Achieves ±15 mV trip-point accuracy over temperature, eliminating need for dedicated supervisor ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884-B4V7 | Same 4.7 V rating but ±5 % tolerance; SOD323 package (1.7 × 1.3 mm) | Larger footprint; higher leakage (5 μA @ 4.7 V); less suitable for ultra-low-power designs | Select when cost sensitivity outweighs size and leakage requirements |
| MMSZ4704T1G | 4.7 V, ±5 %; SOD-123 package; 500 mW Ptot; rdiff = 100 Ω @ 5 mA | Higher power handling but 3× larger footprint; optimized for higher-current regulation, not microampere bias | Choose for applications needing >1 mA Zener current or higher surge robustness |
Compared with BZX8850-B4V7YL, BZX884-B4V7 trades accuracy and size for cost, while MMSZ4704T1G prioritizes power margin over miniaturization - making the BZX8850-B4V7YL optimal for space- and current-constrained precision references.
Availability
BZX8850-B4V7YL is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, USB-C power negotiation clamp, and IoT node reset supervisor applications requiring stable component supply across extended temperature ranges and long-lifecycle deployments.
Supply support for BZX8850-B4V7YL 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 automotive-grade reliability.
The BZX8850 series belongs to Nexperia's precision Zener portfolio, engineered specifically for low-current voltage regulation in battery-powered and space-constrained systems where tight tolerance, ultra-small packaging, and low leakage are mandatory.
FAQ
What is the maximum reverse current at 4.7 V for BZX8850-B4V7YL?
The maximum reverse current (leakage) is 3.0 μA at VR = 4.7 V and Tj = 25 °C, verified per Table 8 of the official Nexperia datasheet Rev. 1 (2024). This value remains ≤ 5.0 μA across the full −55 °C to +125 °C operating ambient range, supporting ultra-low-power standby modes.
Can BZX8850-B4V7YL be used in place of a 5 V Zener diode?
No - its nominal Zener voltage is 4.7 V with a guaranteed range of 4.61 V to 4.79 V at 50 μA. Substituting it for a 5 V part introduces a systematic −6 % error in reference level, which violates typical 1 % tolerance requirements for 5 V systems. Use BZX8850-B5V1 for true 5 V regulation.
Is the SOD882 package compatible with standard reflow profiles?
Yes - the DFN1006-2 package is qualified for IPC/JEDEC J-STD-020D-compliant reflow, with peak temperature up to 260 °C for ≤ 30 seconds. Figure 10 in the datasheet specifies the recommended solder land pattern (0.6 mm pad length, 0.3 mm width), and thermal resistance Rth(j-a) = 500 K/W assumes this footprint on FR4 with single-sided copper.
Does BZX8850-B4V7YL require an external series resistor in regulation circuits?
Yes - like all Zener diodes, it requires a current-limiting resistor to set the operating point within its specified 1 μA–5 mA range. For 50 μA operation from a 5 V source, a 6.8 kΩ resistor yields 4.7 V drop across the diode and 50 μA current, satisfying both regulation stability and power dissipation limits.
BZX8850-B4V7YL 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):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-B4V7YL FAQ
1.How can I place an order for BZX8850-B4V7YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-B4V7YL 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-B4V7YL reliable?
The price and inventory of BZX8850-B4V7YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-B4V7YL is usually 5 days.
3.What payment methods are accepted for BZX8850-B4V7YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-B4V7YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-B4V7YL?
BZX8850-B4V7YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-B4V7YL 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-B4V7YL?
For technical support, including BZX8850-B4V7YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-B4V7YL requirements.
6.How does Aetrix verify that BZX8850-B4V7YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-B4V7YL 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-B4V7YL meets industry standards.
7.What is the process for return or replacement of BZX8850-B4V7YL?
All BZX8850-B4V7YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-B4V7YL, 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-B4V7YL part is unused and in its original packaging.
Return procedure for BZX8850-B4V7YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-B4V7YL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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