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Nexperia USA Inc. BZX58550-C2V7X
- Part No.:
- BZX58550-C2V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-C2V7X.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:18,435
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Product details
Overview
BZX58550-C2V7X 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 2.7 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at 5 mA, and 190 pF capacitance at 0 V - enabling stable operation in portable battery-powered sensor nodes and wearable power management.
For engineers reviewing the BZX58550-C2V7X datasheet, BZX58550-C2V7X pinout, BZX58550-C2V7X application, or BZX58550-C2V7X equivalent, key selection criteria include its 2.7 V ±2 % Zener voltage, 300 mW total power dissipation, SOD523 footprint compatibility, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across a wide reverse current range (50 µA to 5 mA), with temperature coefficient of −3.5 mV/K and junction-to-ambient thermal resistance of 460 K/W on standard FR4 PCB. Its low 50 µA test current enables accurate regulation in micro-power systems where quiescent current must be minimized.
The BZX58550-C2V7X belongs to the "C" tolerance series (±2 %), features a cathode-marked SOD523 package with 1.2 mm × 0.8 mm × 0.6 mm dimensions, and exhibits 1.0 µA maximum reverse current at VR = 2.0 V - critical for preserving battery life in always-on IoT endpoints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.565 V to 2.835 V at IZ = 50 µA - tight ±2 % tolerance ensures predictable reference accuracy in low-bias analog circuits |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 5 mA - defines voltage regulation stiffness under load variation |
| Reverse Current (IR) | 1.0 µA max at VR = 2.0 V - minimizes standby power loss in battery-critical applications |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports use as low-drop rectifier or ESD clamp in signal paths |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 with 35 mm² cathode copper - sets thermal design margin for compact PCB layouts |
| Diode Capacitance (Cd) | 190 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| Temperature Coefficient (SZ) | −3.5 mV/K - quantifies voltage drift per degree Celsius, essential for temperature-stable references |
Pinout & Package
SOD523 (SC-79) plastic surface-mount package: 2-pin, ultra-small outline (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 voltage node; marking bar identifies this terminal - polarity must be observed to avoid forward conduction during regulation |
| 2 | Anode (A) | Connected to ground or lower potential; completes shunt path - reverse-biased operation requires anode at lower potential than cathode |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in nanoampere-bias circuits such as CMOS oscillator references and sleep-mode supervisors |
| Tight voltage tolerance | ±2 % (C-series) - reduces calibration overhead in precision ADC reference buffers and sensor excitation circuits |
| Optimized leakage profile | Intentional minor rise in leakage current - improves switching speed and suppresses noise in analog front-end clamping stages |
| Ultra-compact SMD package | SOD523 footprint (1.2 mm × 0.8 mm) - supports high-density layout in space-constrained wearables and medical patches |
| Thermal performance | 460 K/W Rth(j-a) on standard FR4 - allows direct thermal modeling without heatsinking in low-power designs |
Applications
| Portable Sensor Biasing | Low-Power Reference Buffer |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing 2.7 V reference for sensor bridge biasing and ADC input scaling. Use Value: 50 µA test current and 1.0 µA leakage at 2.0 V minimize battery drain over multi-year deployments. |
Use Scenario: Generating clean, low-noise reference for 12-bit SAR ADCs in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-capacitance (190 pF) Zener diode used as passive reference source in buffered reference chain. Use Value: −3.5 mV/K temperature coefficient and ±2 % tolerance ensure <±0.5 LSB error across −20 °C to +70 °C operating range. |
| Wearable Power Sequencing | IoT Node Voltage Clamp |
Use Scenario: Enabling controlled power-up sequencing of BLE SoC and PMIC rails in smartwatch subsystems. IC Role / Device Role / Timing Role: Zener-based reset supervisor element generating precise enable threshold from main LDO output. Use Value: 2.565–2.835 V regulation window ensures reliable activation timing independent of supply ripple. |
Use Scenario: Protecting GPIO inputs of LoRaWAN transceivers against ESD and transient overvoltage in outdoor gateways. IC Role / Device Role / Timing Role: Fast-switching Zener clamp absorbing 40 W non-repetitive surges (tp = 100 µs) while limiting voltage to 2.84 V. Use Value: Optimized leakage profile reduces clamping noise coupling into sensitive RF receive paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-B2V7 | ±5 % tolerance (vs. ±2 %), higher typical leakage at same VR | Acceptable where cost sensitivity outweighs reference accuracy requirements | Select when budget constraints dominate and system-level calibration compensates for wider VZ spread |
| MMSZ4678T1G | 2.7 V ±5 %, SOD-123 package (2.7 mm × 1.6 mm), 500 mW Ptot | Higher power handling but 3.4× larger footprint - unsuitable for ultra-dense layouts | Choose only if thermal margin exceeds 300 mW and board area permits larger SOD-123 placement |
Compared with BZX58550-B2V7 and MMSZ4678T1G, the BZX58550-C2V7X uniquely balances ±2 % precision, SOD523 miniaturization, and optimized leakage for noise-critical, space-constrained battery systems - making it irreplaceable where both accuracy and size are non-negotiable.
Availability
BZX58550-C2V7X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power reference buffering, wearable power sequencing, and IoT node voltage clamping requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for BZX58550-C2V7X 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-grade and industrial power solutions.
The BZX58550 series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for ultra-low-power voltage reference and biasing in battery-constrained edge electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX58550-C2V7X has a nominal Zener voltage of 2.7 V with ±2 % tolerance, meaning breakdown occurs between 2.565 V and 2.835 V at 50 µA test current. Its absolute maximum reverse voltage is not rated separately - operation beyond VZ + 10 % risks exceeding power limits and thermal runaway. The device is not intended for transient suppression above its specified VZ.
Can this Zener diode be used in forward-biased mode as a regular rectifier?
Yes - the BZX58550-C2V7X has a maximum forward voltage of 0.9 V at 10 mA, making it usable as a low-current signal diode. However, its 200 mA absolute maximum forward current and lack of fast-recovery optimization limit it to low-speed, low-power applications like LED biasing or logic-level clamping - not general-purpose rectification.
How does the "C" suffix differ from "B" in the BZX58550 series?
The "C" suffix denotes ±2 % Zener voltage tolerance (e.g., BZX58550-C2V7X), while "B" indicates approximately ±5 % tolerance (e.g., BZX58550-B2V7X). Both share identical SOD523 packaging, thermal specs, and leakage optimization, but "C" parts undergo tighter binning for precision reference applications where voltage stability is critical.
Is this device suitable for automotive applications?
No - the BZX58550-C2V7X is not AEC-Q200 qualified and lacks automotive-grade screening, temperature range validation (−40 °C to +125 °C), or failure rate documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive systems voids warranty and introduces unmitigated reliability risk.
BZX58550-C2V7X 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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 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-C2V7X FAQ
1.How can I place an order for BZX58550-C2V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-C2V7X 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-C2V7X reliable?
The price and inventory of BZX58550-C2V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-C2V7X is usually 5 days.
3.What payment methods are accepted for BZX58550-C2V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-C2V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-C2V7X?
BZX58550-C2V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-C2V7X 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-C2V7X?
For technical support, including BZX58550-C2V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-C2V7X requirements.
6.How does Aetrix verify that BZX58550-C2V7X is sourced from the original manufacturer or authorized distributors?
All BZX58550-C2V7X 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-C2V7X meets industry standards.
7.What is the process for return or replacement of BZX58550-C2V7X?
All BZX58550-C2V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-C2V7X, 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-C2V7X part is unused and in its original packaging.
Return procedure for BZX58550-C2V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-C2V7X 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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