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Nexperia USA Inc. BZX58550-C2V0X
- Part No.:
- BZX58550-C2V0X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V0X.pdf
- Description:
- DIODE ZENER 2V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:20,651
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Product details
Overview
BZX58550-C2V0X 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 2.0 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at 5 mA, and 0.9 V forward voltage at 10 mA - optimized for portable battery-powered systems requiring stable low-current regulation.
For engineers reviewing the BZX58550-C2V0X datasheet, BZX58550-C2V0X pinout, BZX58550-C2V0X application, or BZX58550-C2V0X equivalent, key selection criteria include its 2.0 V nominal Zener voltage, ±2 % tolerance, ultra-small SOD523 footprint, low 50 µA test current, and intentional leakage profile for noise reduction in signal-path references.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 2.0 V reference across its cathode–anode terminals under reverse-biased conditions. Its specified regulation at 50 µA enables operation in micro-power sensor bias networks and low-leakage analog front-ends where traditional Zeners draw excessive quiescent current.
The BZX58550-C2V0X belongs to the "C" tolerance series (±2 %), features a 600 Ω dynamic impedance at 5 mA, and exhibits a negative temperature coefficient of −3.5 mV/K - enabling predictable thermal drift compensation in precision reference chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.0 V nominal at IZ = 50 µA; tight ±2 % tolerance ensures accurate low-current reference without trimming. |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 5 mA; defines output impedance stability under small-signal load variations. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; supports bidirectional protection or dual-role use in clamp + bias configurations. |
| Total Power Dissipation (Ptot) | 300 mW max at Tamb ≤ 25 °C on FR4 with 35 mm² cathode copper; sets safe continuous operating envelope. |
| Reverse Current (IR) | 1.0 µA max at VR = 1.0 V; low leakage preserves battery life in always-on standby circuits. |
| Temperature Coefficient (SZ) | −3.5 mV/K; enables predictable drift modeling for temperature-compensated reference designs. |
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; carries reverse current during regulation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in nanoampere-bias sensor interfaces and energy-harvesting circuits. |
| Tight voltage tolerance | ±2 % (C-series) - eliminates need for external trimming in factory-calibrated portable devices. |
| Optimized leakage profile | Intentional minor rise in leakage current - reduces switching noise and improves transient response in analog signal paths. |
| Ultra-compact SMD package | SOD523 footprint (1.2 × 0.8 mm) - saves PCB area in space-constrained wearables and IoT edge nodes. |
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: Shunt voltage reference regulating sensor bridge supply at 2.0 V with <1 µA standby leakage. Use Value: Enables >10-year battery life by eliminating active LDO overhead while maintaining ±0.5 % full-scale accuracy over temperature. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADCs in wireless medical patch sensors. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing larger 3-pin bandgap ICs in sub-100 µA total system current designs. Use Value: Reduces board area by 65 % vs. SOT23 bandgap ICs while meeting ADC INL spec via −3.5 mV/K TC matching. |
| RF Front-End Bias Network | EEPROM Write Protection Clamp |
Use Scenario: Setting gate bias for GaAs pHEMT LNAs in 2.4 GHz ISM-band transceivers. IC Role / Device Role / Timing Role: Low-capacitance (220 pF) Zener clamping bias rail to suppress RF-induced voltage spikes. Use Value: Prevents LNA saturation during burst transmission without degrading noise figure due to minimal parasitic capacitance. |
Use Scenario: Protecting EEPROM VPP pin from overvoltage during hot-plug programming in industrial controllers. IC Role / Device Role / Timing Role: Fast-acting 2.0 V shunt clamp activated only during write pulses exceeding 2.2 V threshold. Use Value: Blocks destructive transients while drawing zero static current - avoids inadvertent memory corruption during idle states. |
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-B2V0 | Same 2.0 V nominal voltage but ±5 % tolerance (B-series); higher leakage at low VR. | Acceptable where cost sensitivity outweighs accuracy; unsuitable for calibrated sensor nodes. | Select only when production test margin allows ±5 % variation and leakage budget exceeds 2 µA. |
| MMSZ4678T1G | 2.0 V Zener, SOD-123 package (2.7 × 1.6 mm); 500 mW Ptot; ±5 % tolerance; 100 Ω rdiff. | Higher power handling but 3.4× larger footprint; better for higher-current bias, worse for miniaturized designs. | Choose when board space permits and >1 mA regulation current is required; avoid for sub-100 µA systems. |
Compared with BZX58550-B2V0 and MMSZ4678T1G, the BZX58550-C2V0X uniquely balances ±2 % accuracy, SOD523 miniaturization, and 50 µA test current - making it optimal for space- and power-constrained precision analog subsystems where alternatives trade off size, leakage, or tolerance.
Availability
BZX58550-C2V0X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, RF front-end bias networks, and EEPROM write protection requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX58550-C2V0X 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, with leadership in automotive-qualified and industrial-grade components.
The BZX58550 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and space-constrained applications demanding stable voltage references below 100 µA quiescent current.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C2V0X at 70 °C ambient?
At 70 °C ambient, derating applies: the 300 mW rating at 25 °C decreases linearly at 2.4 mW/°C above 25 °C. Thus, maximum continuous Ptot = 300 mW − (70 − 25) × 2.4 mW = 192 mW. This assumes mounting on FR4 with ~35 mm² cathode copper per datasheet condition [2].
Can BZX58550-C2V0X be used in forward-bias mode as a standard diode?
Yes - it exhibits 0.9 V forward voltage at 10 mA, consistent with silicon PN junction behavior. However, its primary design intent and characterization are for reverse-bias Zener operation; forward characteristics are not guaranteed beyond the 10 mA limit shown in Fig. 2.
How does the "intentional minor rise of leakage current" benefit circuit performance?
Per AN90031, this controlled leakage profile reduces minority-carrier storage time, enabling faster turn-off and lower switching noise - particularly valuable in analog signal chains where Zener references interface with op-amps or ADC drivers sensitive to transient artifacts.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended solder land pattern (Fig. 10) uses 0.5 mm pad width, 1.4 mm length, and 0.4 mm solder mask opening to ensure reliable wetting and mechanical anchoring without tombstoning.
BZX58550-C2V0X 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):
- 2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7 µA @ 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:
- SOD-523
BZX58550-C2V0X FAQ
1.How can I place an order for BZX58550-C2V0X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V0X 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-C2V0X reliable?
The price and inventory of BZX58550-C2V0X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C2V0X is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V0X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V0X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V0X?
BZX58550-C2V0X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V0X 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-C2V0X?
For technical support, including BZX58550-C2V0X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V0X requirements.
6.How does Aetrix verify that BZX58550-C2V0X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V0X 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-C2V0X meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V0X?
All BZX58550-C2V0X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V0X, 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-C2V0X part is unused and in its original packaging.
Return procedure for BZX58550-C2V0X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V0X Tags
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MM5Z5V1ST1G
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