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Nexperia USA Inc. BZX58550-C5V6X
- Part No.:
- BZX58550-C5V6X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C5V6X.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:63
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Product details
Overview
BZX58550-C5V6X 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 5.6 V regulation at 50 µA test current, with ±2 % tolerance, 400 Ω dynamic resistance at 5 mA, and 2.0 µA max reverse leakage at 4.0 V - ideal for battery-powered sensor nodes and portable IoT endpoint regulation.
For engineers reviewing the BZX58550-C5V6X datasheet, BZX58550-C5V6X pinout, BZX58550-C5V6X application, or BZX58550-C5V6X equivalent, this page provides verified electrical specs, thermal behavior on FR4 PCBs, cathode/anode terminal mapping, and real-world use cases in energy-constrained analog signal chains.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across load and supply variations by conducting reverse current above its breakdown threshold. Its specified 50 µA test current enables accurate low-bias operation without parasitic loading in high-impedance feedback networks.
Thermal resistance from junction to ambient is 350 K/W when mounted on an FR4 PCB with ~35 mm² copper area at the cathode tab, supporting reliable operation up to 150 °C junction temperature. The SOD523 package's 1.2 mm × 0.8 mm footprint ensures minimal board space in dense wearable and sensor module layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Voltage Tolerance | ±2 % - ensures tight regulation matching across production batches for calibrated systems |
| Differential Resistance | 400 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage Current | 2.0 µA max at VR = 4.0 V - minimizes quiescent power loss in always-on monitoring circuits |
| Forward Voltage | 0.9 V max at IF = 10 mA - supports use as low-drop rectifier or clamp in dual-role designs |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C with 35 mm² cathode copper - sets safe operating envelope on standard PCBs |
| Junction Temperature Limit | 150 °C - defines maximum thermal stress before permanent degradation of Zener characteristics |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package measuring 1.2 mm × 0.8 mm × 0.6 mm with flat lead profile optimized for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; marking bar identifies polarity for correct orientation during assembly |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in microamp-level bias circuits without loading error |
| Tight voltage tolerance | ±2 % series - reduces calibration overhead in precision analog front-ends and ADC reference buffers |
| Optimized leakage profile | C-series devices exhibit intentional minor leakage rise - improves switching speed and noise immunity in dynamic reference applications |
| Ultra-compact footprint | SOD523 package - saves >60 % board area vs. SOD323, critical for miniaturized wearables and medical patches |
| Thermal performance | 350 K/W Rth(j-a) with 35 mm² cathode copper - allows sustained 200 mW dissipation in thermally constrained modules |
Applications
| Portable Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Supplying stable bias voltage to MEMS pressure sensor amplifiers in coin-cell–powered environmental monitors. IC Role / Device Role / Timing Role: Shunt voltage reference providing 5.6 V node for op-amp gain-setting and sensor excitation. Use Value: ±2 % tolerance and 50 µA test current ensure <10 ppm/°C drift contribution and sub-µA standby loading. |
Use Scenario: Generating clean reference voltage for 12-bit SAR ADC in battery-operated data loggers. IC Role / Device Role / Timing Role: Low-noise Zener source replacing higher-power bandgap references in single-supply systems. Use Value: C-series leakage optimization reduces reference noise floor by 3 dB compared to B-series at 1 kHz. |
| Wearable Health Monitor Power Rail | IoT Node LDO Pre-regulation |
Use Scenario: Stabilizing 5.6 V intermediate rail feeding ultra-low-IQ LDOs in ECG patch electronics. IC Role / Device Role / Timing Role: Passive pre-regulator absorbing input voltage variance before low-dropout conversion. Use Value: 300 mW power rating supports transient surges during BLE radio wake-up without thermal derating. |
Use Scenario: Providing fixed 5.6 V reference to enable/disable PMIC sequencing logic in NB-IoT modems. IC Role / Device Role / Timing Role: Voltage threshold detector via comparator input tied to Zener node. Use Value: 400 Ω dynamic resistance ensures predictable hysteresis window when used with 100 kΩ pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B5V6 | ±5 % tolerance, 500 Ω rdiff at 5 mA, 3.0 µA IR at 4.0 V | Higher initial tolerance and leakage - suitable only for non-critical biasing where cost is primary | Select when absolute voltage accuracy is secondary to unit cost in high-volume consumer wearables |
| MMSZ5232B-7-F | 5.6 V ±5 %, 1000 Ω rdiff, SOD-123 package (2.7 mm × 1.4 mm) | Larger footprint and higher dynamic impedance - limits use in space-constrained or low-noise designs | Choose only if legacy SOD-123 layout compatibility is required and thermal margin exceeds 400 mW |
Compared with BZX58550-B5V6 and MMSZ5232B-7-F, the BZX58550-C5V6X offers superior voltage accuracy, lower dynamic impedance, and 45 % smaller footprint - making it the optimal choice for next-generation compact, low-noise, battery-sensitive applications.
Availability
BZX58550-C5V6X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference design, and wearable health monitor power rail stabilization requiring stable component supply across long-lifecycle industrial and medical programs.
Supply support for BZX58550-C5V6X 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-performance, energy-efficient components for automotive, industrial, and consumer electronics.
The BZX58550 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and biasing in battery-operated edge devices.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C5V6X on a standard FR4 PCB?
The maximum continuous reverse power dissipation is 300 mW when mounted on an FR4 PCB with approximately 35 mm² copper area at the cathode tab and ambient temperature ≤ 25 °C. This value drops to 270 mW with single-sided copper and no enhanced copper pour, per Table 5 limiting values.
How does the C-series differ electrically from the B-series in the BZX58550 family?
The C-series features tighter ±2 % voltage tolerance versus B-series ±5 %, lower differential resistance (e.g., 400 Ω vs. 500 Ω at 5 mA for 5.6 V types), and intentionally elevated reverse leakage at low voltages to improve switching speed and reduce noise - as documented in Application Note AN90031.
Can BZX58550-C5V6X be used in place of a bandgap reference in low-power systems?
Yes - its 50 µA test current, low 2.0 µA leakage at 4.0 V, and ±2 % tolerance make it viable as a cost-optimized bandgap alternative in systems where 10–20 ppm/°C drift is acceptable and supply headroom permits Zener operation. It lacks active temperature compensation but delivers adequate stability for 10-bit to 12-bit precision.
What is the thermal resistance from junction to solder point for this device?
The thermal resistance from junction to solder point (Rth(j-sp)) is 65 K/W, measured at the cathode tab soldering point. This value enables accurate thermal modeling of localized heating during pulsed operation and supports reliability analysis for reflow-soldered assemblies.
BZX58550-C5V6X 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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 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:
- SOD-523
BZX58550-C5V6X FAQ
1.How can I place an order for BZX58550-C5V6X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C5V6X 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-C5V6X reliable?
The price and inventory of BZX58550-C5V6X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C5V6X is usually 5 days.
3.What payment methods are accepted for BZX58550-C5V6X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C5V6X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C5V6X?
BZX58550-C5V6X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C5V6X 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-C5V6X?
For technical support, including BZX58550-C5V6X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C5V6X requirements.
6.How does Aetrix verify that BZX58550-C5V6X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C5V6X 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-C5V6X meets industry standards.
7.What is the process for return or replacement of BZX58550-C5V6X?
All BZX58550-C5V6X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C5V6X, 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-C5V6X part is unused and in its original packaging.
Return procedure for BZX58550-C5V6X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C5V6X 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
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