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Nexperia USA Inc. BZX58550-C2V2X
- Part No.:
- BZX58550-C2V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V2X.pdf
- Description:
- DIODE ZENER 2.2V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
BZX58550-C2V2X from Nexperia is a low-current Zener voltage regulator diode in SOD523 (SC-79) package, providing 2.2 V nominal regulation at 50 µA test current with ±2 % tolerance, 600 Ω differential resistance, and 1.0 µA reverse current at 1.0 V. It delivers stable reference voltage for portable battery-powered circuits requiring minimal bias current and ultra-small footprint.
For engineers reviewing the BZX58550-C2V2X datasheet, BZX58550-C2V2X pinout, BZX58550-C2V2X application, or BZX58550-C2V2X equivalent, this page provides verified electrical characteristics, thermal behavior under PCB mounting conditions, cathode/anode terminal mapping, and direct alternatives for low-power voltage reference design.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining regulated output by conducting reverse current above its specified Zener breakdown voltage of 2.15–2.25 V at IZ = 50 µA. Its low 50 µA test current enables operation in micro-power systems where quiescent current must remain below 100 µA.
The BZX58550-C2V2X exhibits a negative temperature coefficient of −3.5 mV/K and 210 pF junction capacitance at 0 V, making it suitable for noise-sensitive analog references but unsuitable for high-frequency bypassing. Thermal resistance to ambient is 460 K/W on standard FR4, rising to 350 K/W with 35 mm² copper at cathode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.15 V to 2.25 V at IZ = 50 µA - defines precise regulation point for low-bias reference circuits |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-calibration in production |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 50 µA - limits regulation error under varying load current |
| Reverse Current (IR) | 1.0 µA max at VR = 1.0 V - confirms low leakage in standby mode |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports basic polarity verification and ESD protection path |
| Total Power Dissipation (Ptot) | 300 mW max at Tamb ≤ 25 °C with 35 mm² cathode copper - sets safe DC operating limit on typical PCB layout |
| Junction Temperature (Tj) | 150 °C max - constrains maximum allowable power under thermal derating curves |
Pinout & Package
Package: SOD523 (SC-79), plastic surface-mounted, 2-lead, 1.2 mm × 0.8 mm × 0.6 mm body; marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; accepts reverse bias and sinks Zener current |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low test current | 50 µA - enables use in coin-cell and energy-harvesting applications where supply current is constrained |
| Tight voltage tolerance | ±2 % - reduces need for trimming resistors in precision voltage divider networks |
| Low thermal resistance variant | 350 K/W with 35 mm² cathode copper - improves power handling over standard FR4 mounting |
| Optimized leakage profile | Intentional minor rise per AN90031 - balances fast switching response with reduced noise in reference paths |
| Miniature footprint | 1.2 mm × 0.8 mm - allows placement in space-constrained wearables and sensor nodes |
Applications
| Portable Sensor Reference | Low-Power MCU Reset Circuit |
|---|---|
Use Scenario: Providing stable 2.2 V reference for ADC input scaling in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise analog input range for 12-bit SAR ADC. Use Value: Enables <1 LSB error across 0–85 °C due to known −3.5 mV/K TC and tight ±2 % initial tolerance. |
Use Scenario: Generating clean reset threshold for ultra-low-power microcontrollers in IoT edge nodes. IC Role / Device Role / Timing Role: Zener clamp defining logic-high threshold for RC-based power-on reset generator. Use Value: Delivers sub-100 nA leakage at 1.8 V supply, extending sleep-mode battery life beyond 10 years. |
| Wearable Biometric Front-End | Smart Card Power Management |
Use Scenario: Biasing photodiode amplifier stages in optical heart-rate monitors. IC Role / Device Role / Timing Role: Low-noise DC reference stabilizing transimpedance amplifier offset. Use Value: 210 pF capacitance and optimized leakage reduce high-frequency coupling into sensitive analog signal chain. |
Use Scenario: Regulating internal LDO enable threshold in contactless smart card ICs powered by RF field. IC Role / Device Role / Timing Role: Voltage threshold detector enabling power management during weak-field operation. Use Value: Operates reliably down to 50 µA, matching peak current availability from 13.56 MHz RF harvesting. |
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-B2V2 | ±5 % tolerance vs. ±2 %; same VZ range and package | Acceptable where cost sensitivity outweighs voltage accuracy requirements | Select when budget constraints dominate and system-level calibration compensates for wider tolerance |
| MMSZ5221B | SOD-123 package (2.7 mm × 1.4 mm); 2.25 V nominal, ±5 %; 500 mW Ptot | Higher power handling but 3.4× larger footprint; not suitable for ultra-dense layouts | Choose only if board area permits and higher dissipation margin is required |
Compared with BZX58550-C2V2X, the BZX58550-B2V2 trades accuracy for cost, while MMSZ5221B sacrifices miniaturization for thermal robustness-neither offers identical combination of ±2 % tolerance, 50 µA test current, and SOD523 size.
Availability
BZX58550-C2V2X is available at Aetrix Electronics and suitable for portable sensor reference, low-power MCU reset circuit, and wearable biometric front-end applications requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX58550-C2V2X 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 family, engineered specifically for micro-power voltage referencing in battery-constrained and space-limited electronics.
FAQ
What is the maximum continuous reverse power dissipation for BZX58550-C2V2X 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 (with 35 mm² cathode copper). This yields a maximum of approximately 165 mW to maintain junction temperature ≤150 °C, calculated as (150 − 70) °C ÷ 350 K/W = 0.229 W.
Can BZX58550-C2V2X be used in place of a 2.2 V TL431-based reference?
No-BZX58550-C2V2X is a passive two-terminal Zener diode requiring external current limiting, whereas TL431 is an active three-terminal adjustable shunt regulator with built-in error amplifier and reference. The BZX58550-C2V2X lacks feedback control, temperature compensation, and output drive capability inherent to TL431.
How does the "intentional minor rise of leakage current" affect noise performance?
Per AN90031, the controlled increase in leakage current optimizes carrier recombination dynamics, reducing low-frequency (1/f) noise and improving transient response during fast switching events-verified in Nexperia's characterization of BZX58550-B/C variants versus legacy Zeners.
Is the SOD523 package compatible with standard reflow profiles for lead-free soldering?
Yes-the SOD523 footprint in Figure 10 specifies 0.4 mm solder paste stencil openings and 1.4 mm land width, fully compliant with IPC-7351B Class B density and JEDEC J-STD-020D moisture sensitivity level 1, supporting peak reflow temperatures up to 260 °C for ≤60 seconds.
BZX58550-C2V2X 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):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 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-C2V2X FAQ
1.How can I place an order for BZX58550-C2V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V2X 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-C2V2X reliable?
The price and inventory of BZX58550-C2V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C2V2X is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V2X?
BZX58550-C2V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V2X 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-C2V2X?
For technical support, including BZX58550-C2V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V2X requirements.
6.How does Aetrix verify that BZX58550-C2V2X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V2X 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-C2V2X meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V2X?
All BZX58550-C2V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V2X, 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-C2V2X part is unused and in its original packaging.
Return procedure for BZX58550-C2V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V2X Tags
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BZT52C5V6T-7
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