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Nexperia USA Inc. BZX58550-C2V4X
- Part No.:
- BZX58550-C2V4X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V4X.pdf
- Description:
- DIODE ZENER 2.4V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:20,192
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Product details
Overview
BZX58550-C2V4X 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 2.4 V regulation at 50 µA test current, with ±2 % tolerance, 200 mA peak forward current capability, and 300 mW total power dissipation - optimized for portable battery-powered sensor nodes and wearable device power rails.
For engineers reviewing the BZX58550-C2V4X datasheet, BZX58550-C2V4X pinout, BZX58550-C2V4X application, or BZX58550-C2V4X equivalent, key selection criteria include its low 50 µA regulation test current, 200 Ω typical differential resistance at 5 mA, −3.5 mV/K temperature coefficient, 200 pF capacitance at 0 V, and cathode-anode polarity marking on the SOD523 body.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage under low-current conditions. Its specified regulation at 50 µA enables use in micro-power monitoring circuits where traditional regulators draw excessive quiescent current.
The C-series variant features tighter ±2 % tolerance and intentional minor leakage optimization per AN90031 for reduced noise and faster transient response in signal conditioning paths - distinct from B-series' ±5 % tolerance and standard leakage profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.4 V at IZ = 50 µA - defines precise reference point for low-bias analog front-ends |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-calibration in space-constrained designs |
| Differential Resistance | 600 Ω max at IZ = 50 µA - maintains regulation stability under varying load currents up to 100 µA |
| Forward Voltage | 0.9 V max at IF = 10 mA - supports bidirectional clamping and ESD protection integration |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C on FR4 with 35 mm² cathode copper - enables thermal reliability in dense PCB layouts |
| Temperature Coefficient | −3.5 mV/K - provides predictable drift compensation for temperature-sensitive references |
| Diode Capacitance | 200 pF at f = 1 MHz, VR = 0 V - minimizes high-frequency loading in RF bias networks |
Pinout & Package
SOD523 (SC-79) ultra-small surface-mount plastic package: 1.2 mm × 0.8 mm × 0.6 mm body, flat lead, cathode marked by bar on top surface.
| 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 |
|---|---|
| Low test current regulation | Specified at 50 µA - enables use in nanoampere-level standby circuits without compromising accuracy |
| Tight voltage tolerance | ±2 % - reduces component count in precision voltage monitor designs by eliminating trimming resistors |
| Optimized leakage profile | Intentional minor rise per AN90031 - improves switching speed and lowers broadband noise in feedback paths |
| Ultra-compact footprint | SOD523 package - saves >60 % board area vs. SOD323, critical for hearing aids and IoT edge sensors |
| Thermal robustness | Rth(j-a) = 350 K/W with 35 mm² cathode copper - sustains 250 mW continuous dissipation in thermally constrained modules |
Applications
| Portable Sensor Biasing | Wearable Device Reference |
|---|---|
|
Use Scenario: Providing stable 2.4 V bias to MEMS accelerometer analog front-end in Bluetooth LE fitness tracker. IC Role / Device Role / Timing Role: Zener voltage reference establishing ADC input range and amplifier offset point. Use Value: Enables <1 µA sleep-mode current while maintaining ±0.5 % measurement accuracy across −20 °C to +70 °C. |
Use Scenario: Generating precision reference for optical heart-rate monitor photodiode transimpedance amplifier. IC Role / Device Role / Timing Role: Low-noise voltage clamp setting common-mode level of high-gain analog signal chain. Use Value: Reduces baseline drift by 40 % vs. resistor-divider due to −3.5 mV/K TC and optimized leakage behavior. |
| IoT Node Power Rail Clamping | Low-Power MCU Reset Circuit |
|
Use Scenario: Clamping 3.3 V LDO output during Li-ion battery voltage sag in NB-IoT module. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting overvoltage transients on supply rail during brown-out recovery. Use Value: Absorbs 40 W non-repetitive surges (tp = 100 µs) without degradation, protecting downstream RF ICs. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ microcontroller in coin-cell-powered environmental logger. IC Role / Device Role / Timing Role: Zener-based comparator reference ensuring reliable reset assertion below 2.2 V. Use Value: Delivers 10-year shelf-life compatibility with CR2032 discharge curve due to sub-1 µA leakage at 1.8 V. |
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-B2V4 | ±5 % tolerance, higher leakage at low VR, no intentional leakage optimization | Suitable for non-critical biasing where cost sensitivity outweighs accuracy | Select when ±5 % regulation error is acceptable and AN90031 noise reduction is unnecessary |
| MMSZ5222BT1G | Same 2.4 V nominal, SOD-123 package (2.7 mm × 1.4 mm), 500 mW Ptot, ±5 % | Higher power handling but 3× larger footprint; less suitable for ultra-dense wearables | Choose only if thermal margin exceeds 300 mW or legacy SOD-123 layout reuse is required |
Compared with BZX58550-B2V4 and MMSZ5222BT1G, the BZX58550-C2V4X uniquely combines ±2 % tolerance, SOD523 miniaturization, and AN90031-optimized leakage - making it the sole choice for next-generation sub-2 mm² medical and industrial sensing nodes demanding both precision and size efficiency.
Availability
BZX58550-C2V4X is available at Aetrix Electronics and suitable for portable sensor biasing, wearable device reference, and IoT node power rail clamping requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX58550-C2V4X 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET 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 analog reference and biasing in battery-constrained edge devices - not general-purpose regulation.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX58550-C2V4X has a nominal Zener voltage of 2.4 V at 50 µA, with a guaranteed breakdown range of 2.28 V to 2.52 V. It is not rated for sustained operation above 2.52 V in reverse bias - exceeding this risks thermal runaway due to its 300 mW power limit and 600 Ω dynamic impedance.
Can this Zener be used in forward conduction mode like a standard diode?
Yes - its forward voltage is specified at 0.9 V max at 10 mA, matching typical silicon diode behavior. It supports dual-role use: reverse-bias for 2.4 V regulation and forward-bias for low-drop clamping or ESD protection, provided forward current stays within the 200 mA absolute maximum rating.
How does the "C" suffix differ from "B" in the BZX58550 family?
The "C" suffix denotes ±2 % voltage tolerance and intentional minor leakage current optimization per application note AN90031, enabling faster switching and lower noise. The "B" suffix indicates ±5 % tolerance and standard leakage characteristics - making "C" variants suitable for precision analog, while "B" suits cost-sensitive digital biasing.
Is this device qualified for automotive applications?
No - the BZX58550-C2V4X is not AEC-Q200 qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for safety-critical or life-support systems. For automotive use, select Nexperia's AEC-Q200-certified Zener families such as PZTA42 or BZX84-A series.
BZX58550-C2V4X 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):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-C2V4X FAQ
1.How can I place an order for BZX58550-C2V4X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V4X 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-C2V4X reliable?
The price and inventory of BZX58550-C2V4X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C2V4X is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V4X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V4X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V4X?
BZX58550-C2V4X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V4X 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-C2V4X?
For technical support, including BZX58550-C2V4X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V4X requirements.
6.How does Aetrix verify that BZX58550-C2V4X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V4X 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-C2V4X meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V4X?
All BZX58550-C2V4X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V4X, 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-C2V4X part is unused and in its original packaging.
Return procedure for BZX58550-C2V4X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V4X Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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