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Nexperia USA Inc. BZX58550-C2V4-QX
- Part No.:
- BZX58550-C2V4-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V4-QX.pdf
- Description:
- DIODE ZENER 2.4V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:6,691
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Product details
Overview
BZX58550-C2V4-Q from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, designed for precision biasing and voltage reference in space-constrained portable electronics. It delivers a nominal 2.4 V regulation at 50 µA test current, with ±2 % tolerance, 200 mA peak forward current, and 300 mW total power dissipation at 25 °C ambient.
For engineers reviewing the BZX58550-C2V4-Q datasheet, BZX58550-C2V4-Q pinout, BZX58550-C2V4-Q application, or BZX58550-C2V4-Q equivalent, this device is selected for ultra-low-current regulation in battery-powered sensor nodes, automotive body electronics, and low-power microcontroller reset circuits where stable reference voltage under light load is critical.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 2.4 V reference across its cathode–anode terminals, specified at IZ = 50 µA - enabling reliable regulation in micropower systems. Its differential resistance of ≤600 Ω at 5 mA ensures minimal voltage shift under small load variations.
Qualified per AEC-Q101, it supports automotive-grade reliability with junction temperature up to 150 °C and thermal resistance Rth(j-a) as low as 285 K/W on optimized PCB copper area, making it suitable for under-hood and infotainment subsystems requiring long-term stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.4 V at IZ = 50 µA - precise reference for low-bias analog and digital circuits |
| Tolerance | ±2 % - tight regulation for applications demanding high initial accuracy |
| Max Power Dissipation | 300 mW at Tamb ≤ 25 °C - enables operation without heatsinking in compact layouts |
| Forward Voltage | ≤0.9 V at IF = 10 mA - low conduction loss when used in forward-biased protection paths |
| Reverse Leakage | ≤1.0 µA at VR = 1.0 V - negligible standby current in always-on battery circuits |
| Junction Temperature | −55 °C to +150 °C - supports extended automotive and industrial temperature ranges |
| Package | SOD523 (SC-79), 1.2 mm × 0.8 mm × 0.6 mm - ultra-small footprint for high-density PCBs |
Pinout & Package
SOD523 (SC-79) surface-mount plastic package with flat lead profile and cathode marking bar; dimensions: 1.2 mm × 0.8 mm × 0.6 mm body height, 0.34 mm lead pitch.
| 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 during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low test current | Specified at 50 µA - enables stable regulation in µA-level supply rails like RTC backup or sensor bias |
| AEC-Q101 qualification | Qualified for automotive use - meets stress-test requirements for vibration, temperature cycling, and HTRB |
| Optimized leakage profile | Intentional minor rise in leakage for fast switching and reduced noise - improves transient response in feedback loops |
| Thermal performance | Rth(j-a) = 285 K/W with 1 cm² cathode copper - supports higher sustained power in thermally enhanced layouts |
| Small-outline packaging | SOD523 footprint - saves >60 % board area vs. SOD323, ideal for wearables and compact ECUs |
Applications
| Automotive Body Control Module | Portable Medical Sensor Node |
|---|---|
Use Scenario: Voltage reference for LIN transceiver bias and microcontroller reset monitoring in door module PCBs. IC Role / Device Role / Timing Role: Zener regulator providing stable 2.4 V reference for comparator threshold and POR circuitry. Use Value: ±2 % tolerance and AEC-Q101 qualification ensure consistent reset behavior across −40 °C to +125 °C operating range. |
Use Scenario: Precision biasing of low-power analog front-end (AFE) in wearable ECG patch. IC Role / Device Role / Timing Role: Low-current voltage reference for ADC reference buffer and op-amp offset trimming. Use Value: 50 µA test current matches typical AFE quiescent current, minimizing regulation error and battery drain. |
| Smart Home Motion Detector | Industrial IoT Edge Node |
Use Scenario: Supply rail clamping and reference generation for PIR signal conditioning in battery-operated occupancy sensor. IC Role / Device Role / Timing Role: Dual-role Zener: reverse-biased for 2.4 V reference, forward-biased for overvoltage clamp. Use Value: 0.9 V forward voltage limits clamp loss; 200 mA peak forward rating handles ESD transients. |
Use Scenario: Voltage stabilization for LoRaWAN transceiver LDO input in solar-charged remote telemetry unit. IC Role / Device Role / Timing Role: Pre-regulator protecting downstream LDO from battery voltage drift and ripple. Use Value: 300 mW power rating accommodates intermittent 100 µA–500 µA load surges without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B2V4-Q | Same 2.4 V nominal voltage but ±5 % tolerance instead of ±2 % | Lower cost for non-critical biasing where tighter initial accuracy is unnecessary | Select when system calibration compensates for voltage variation or budget constraints dominate |
| MMSZ5222BT1G | 2.4 V Zener, SOD-123 package (2.7 mm × 1.4 mm), ±5 % tolerance, 500 mW Ptot | Larger footprint and higher power rating - suited for higher-current or less space-constrained designs | Choose when thermal margin >300 mW is required or legacy SOD-123 layout compatibility is mandatory |
Compared with BZX58550-C2V4-Q, the BZX58550-B2V4-Q trades initial accuracy for cost, while MMSZ5222BT1G sacrifices miniaturization for higher power handling - making the C-series optimal for AEC-Q101-compliant, space-limited, precision-bias applications.
Availability
BZX58550-C2V4-Q is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, smart home motion detectors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX58550-C2V4-Q 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 components and energy-efficient solutions.
The BZX58550-Q series belongs to Nexperia's low-current Zener regulator portfolio, engineered specifically for precision voltage reference and biasing in battery-powered and automotive electronics where size, leakage, and qualification matter.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX58550-C2V4-Q is rated for nominal Zener voltage of 2.4 V at 50 µA test current, with minimum/maximum working voltage of 2.28 V / 2.52 V. Its absolute maximum reverse voltage is not defined separately - operation beyond VZ + tolerance risks exceeding power limits. The device is intended for controlled Zener conduction, not avalanche blocking.
Can this Zener be used in forward conduction mode?
Yes - the BZX58550-C2V4-Q has a forward voltage ≤0.9 V at 10 mA, and is rated for 200 mA peak forward current. It is commonly used bidirectionally: reverse-biased for regulation, forward-biased for ESD clamping or polarity protection in low-voltage rails.
How does the ±2 % tolerance affect circuit design?
The ±2 % tolerance means the actual Zener voltage falls between 2.28 V and 2.52 V at 50 µA. Designers must verify that downstream circuits - such as comparator thresholds or ADC references - function correctly across this full range, especially at temperature extremes where VZ drift may compound initial error.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly derated above 25 °C ambient. With Rth(j-a) = 285 K/W (optimized layout), the allowable power drops by ~3.5 mW/°C. At 85 °C ambient, max Ptot reduces to approximately 190 mW to maintain Tj ≤ 150 °C.
BZX58550-C2V4-QX 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX58550-C2V4-QX FAQ
1.How can I place an order for BZX58550-C2V4-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V4-QX 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-C2V4-QX reliable?
The price and inventory of BZX58550-C2V4-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C2V4-QX is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V4-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V4-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V4-QX?
BZX58550-C2V4-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V4-QX 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-C2V4-QX?
For technical support, including BZX58550-C2V4-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V4-QX requirements.
6.How does Aetrix verify that BZX58550-C2V4-QX is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V4-QX 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-C2V4-QX meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V4-QX?
All BZX58550-C2V4-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V4-QX, 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-C2V4-QX part is unused and in its original packaging.
Return procedure for BZX58550-C2V4-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V4-QX Tags
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