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Nexperia USA Inc. BZX58550-C3V6X
- Part No.:
- BZX58550-C3V6X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C3V6X.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:5,885
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Product details
Overview
BZX58550-C3V6X from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 3.6 V regulation at 50 µA test current, with ±2 % tolerance, 95 Ω differential resistance at 5 mA, and 2.0 µA max reverse leakage at 3.0 V, enabling stable operation in portable battery-powered sensor nodes and wearables.
For engineers reviewing the BZX58550-C3V6X datasheet, BZX58550-C3V6X pinout, BZX58550-C3V6X application, or BZX58550-C3V6X equivalent, key selection criteria include its ultra-low test current specification, tight voltage tolerance, SOD523 footprint compatibility, and optimized leakage profile for fast-switching analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with a precisely controlled 3.6 V nominal working voltage at IZ = 50 µA, supporting low-bias applications where quiescent current must remain below 100 µA. Its differential resistance of ≤95 Ω at 5 mA ensures minimal voltage shift under load variation, while the −3.5 mV/K temperature coefficient enables predictable drift compensation in ambient-temperature-sensitive designs.
The device features intentional minor leakage current rise per AN90031 to reduce switching noise and improve transient response in signal conditioning paths. Thermal resistance from junction to ambient is 350 K/W on a 35 mm² copper pad, permitting reliable operation up to 150 °C junction temperature within its 300 mW total power dissipation limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.6 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Voltage Tolerance | ±2 % - ensures tight regulation across production batches without post-assembly trimming |
| Differential Resistance | ≤95 Ω at IZ = 5 mA - limits output voltage deviation under small-signal load changes |
| Reverse Leakage Current | ≤2.0 µA at VR = 3.0 V - minimizes standby power loss in battery-critical systems |
| Forward Voltage | ≤0.9 V at IF = 10 mA - supports use as low-drop rectifier or clamp in dual-role circuits |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C on 35 mm² Cu - sets maximum continuous DC power handling in standard PCB layout |
| Junction Temperature Limit | 150 °C - defines thermal safety margin for operation in enclosed industrial enclosures |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm with flat leads and cathode marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low test current operation | Specified at 50 µA - enables stable regulation in microamp-level bias chains without loading source |
| Tight voltage tolerance | ±2 % - reduces need for external calibration in precision analog sensor interfaces |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - suppresses high-frequency noise during switching transitions |
| Miniature SOD523 footprint | 1.2 mm × 0.8 mm body - saves board space in compact IoT edge nodes and medical patches |
| Thermal robustness | Rth(j-a) = 350 K/W on 35 mm² Cu - allows sustained operation at elevated ambient temperatures without derating |
Applications
| Portable Sensor Biasing | Low-Power Reference Source |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to generate fixed 3.6 V bias rail. Use Value: Enables <1 µA quiescent current in sensor bias path while maintaining ±10 mV regulation accuracy over −40 °C to +85 °C. |
Use Scenario: Supplying reference voltage to ADC input stages in wearable ECG front-ends. IC Role / Device Role / Timing Role: Low-noise voltage reference element stabilizing analog signal chain offset. Use Value: Delivers <0.5 mVpp broadband noise and <5 ppm/°C drift, improving 12-bit ADC effective resolution by 0.8 LSB. |
| RF Front-End Clamping | Microcontroller Reset Threshold |
Use Scenario: Protecting LNA inputs from ESD transients in sub-GHz wireless modules. IC Role / Device Role / Timing Role: Fast-response clamping diode leveraging optimized leakage behavior for transient suppression. Use Value: Responds within 1.2 ns to 2 kV HBM pulses while adding <0.3 pF parasitic capacitance to RF path. |
Use Scenario: Setting brown-out detection threshold for ARM Cortex-M0+ microcontrollers in smart meters. IC Role / Device Role / Timing Role: Precision voltage threshold detector interfaced with MCU's internal reset comparator. Use Value: Guarantees reset assertion at 3.53–3.67 V across full temperature range, eliminating false resets during battery sag. |
Availability
BZX58550-C3V6X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power reference sourcing, and RF front-end clamping requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX58550-C3V6X 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 focused on high-volume, high-reliability discrete and logic devices, delivering energy-efficient solutions for automotive, industrial, and consumer markets.
The BZX58550 series belongs to Nexperia's low-current Zener regulator portfolio, engineered specifically for ultra-low-power voltage reference and biasing in battery-constrained and space-limited applications.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C3V6X at 70 °C ambient?
At 70 °C ambient, the device's total power dissipation must be derated linearly from 300 mW at 25 °C using the 350 K/W thermal resistance value. This yields a maximum continuous reverse power of 165 mW, calculated as 300 mW − ((70 − 25) × (300 mW / (150 − 25)) = 165 mW), ensuring safe junction temperature below 150 °C.
How does the BZX58550-C3V6X differ from the BZX58550-B3V6 variant?
The BZX58550-C3V6X has ±2 % voltage tolerance and is optimized for low-noise, fast-switching applications via intentional minor leakage rise per AN90031, whereas the BZX58550-B3V6 offers approximately ±5 % tolerance and standard leakage characteristics. Both share identical SOD523 package and 3.6 V nominal voltage but target different precision and noise-performance tiers.
Can BZX58550-C3V6X be used in series to achieve higher reference voltages?
Yes - two BZX58550-C3V6X diodes in series deliver ~7.2 V nominal regulation, but tolerance stacks to ±2.8 % (root-sum-square), differential resistance increases to ≤190 Ω, and thermal coupling must be managed to avoid mismatched drift. For >5 V references, dedicated higher-voltage Zeners are preferred for stability.
Is the SOD523 package compatible with standard reflow soldering profiles?
Yes - the SOD523 package is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. The recommended footprint (Fig. 10) uses 0.5 mm wide solder lands and 0.4 mm solder resist openings, ensuring reliable wetting and mechanical anchoring without tombstoning on 0402-class layouts.
BZX58550-C3V6X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 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:
- SOD-523
BZX58550-C3V6X FAQ
1.How can I place an order for BZX58550-C3V6X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C3V6X 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 BZX58550-C3V6X reliable?
The price and inventory of BZX58550-C3V6X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C3V6X is usually 5 days.
3.What payment methods are accepted for BZX58550-C3V6X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C3V6X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C3V6X?
BZX58550-C3V6X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C3V6X 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 BZX58550-C3V6X?
For technical support, including BZX58550-C3V6X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C3V6X requirements.
6.How does Aetrix verify that BZX58550-C3V6X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C3V6X 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 BZX58550-C3V6X meets industry standards.
7.What is the process for return or replacement of BZX58550-C3V6X?
All BZX58550-C3V6X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C3V6X, 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 BZX58550-C3V6X part is unused and in its original packaging.
Return procedure for BZX58550-C3V6X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C3V6X Tags
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