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Nexperia USA Inc. BZX58550-B13X
- Part No.:
- BZX58550-B13X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX58550-B13X.pdf
- Description:
- DIODE ZENER 13V 270MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,952
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Product details
Overview
BZX58550-B13X 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 13 V regulation at 50 µA test current, with ±2 % tolerance, 300 mW total power dissipation, and 9.8 Ω differential resistance at 5 mA - optimized for battery-powered portable electronics and sensor signal conditioning.
For engineers reviewing the BZX58550-B13X datasheet, BZX58550-B13X pinout, BZX58550-B13X application, or BZX58550-B13X equivalent, this page provides verified electrical parameters, thermal behavior under PCB mounting conditions, cathode/anode terminal mapping, and validated alternatives for low-leakage, low-current regulation use cases.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable reverse breakdown voltage across its cathode–anode terminals under controlled current conditions. Its specified 13 V nominal Zener voltage is guaranteed at IZ = 50 µA, with temperature coefficient of +7.0 mV/K and typical reverse leakage < 0.05 µA at VR = 10.4 V.
The BZX58550-B13X belongs to the "B" tolerance series (±2 %), features intentional low leakage for noise-sensitive analog front-ends, and exhibits 150 Ω max differential resistance at IZ = 1 mA - confirming tight regulation performance in low-bias configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 13 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Voltage Tolerance | ±2 % - ensures tight regulation window (12.74 V to 13.26 V) without trimming |
| Differential Resistance | 9.8 Ω max at IZ = 5 mA - minimizes output voltage shift under load variation |
| Forward Voltage | 0.9 V max at IF = 10 mA - enables predictable forward conduction for polarity protection |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C on FR4 with 35 mm² cathode copper - sets safe continuous operating limit |
| Reverse Leakage Current | < 0.05 µA at VR = 10.4 V - critical for ultra-low-power standby and battery drain control |
| Thermal Resistance (j-a) | 350 K/W with 35 mm² cathode Cu area - determines junction temperature rise under steady-state bias |
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 voltage node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in micro-power sensor nodes and IoT sleep modes |
| Tight voltage tolerance | ±2 % - eliminates need for external trimming in precision reference designs |
| Optimized leakage profile | Intentionally minimized IR below 0.05 µA - reduces quiescent current in always-on circuits |
| Ultra-compact footprint | SOD523 package (1.2 × 0.8 mm) - supports high-density layout in wearables and miniature modules |
| Controlled temperature coefficient | +7.0 mV/K - enables predictable drift compensation in temperature-stable references |
Applications
| Portable Sensor Biasing | Low-Power MCU Reference |
|---|---|
Use Scenario: Providing stable 13 V bias to MEMS pressure sensor amplifier stages in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for analog front-end op-amps. Use Value: Enables 12-bit ADC accuracy by holding reference voltage within ±26 mV over temperature and battery discharge. |
Use Scenario: Supplying clean 13 V reference to internal ADC and brown-out detection circuitry in ARM Cortex-M0+ microcontrollers. IC Role / Device Role / Timing Role: Precision voltage clamp for internal bandgap calibration and reset threshold setting. Use Value: Reduces system-level calibration overhead by delivering ±2 % regulation without software compensation. |
| Wearable Health Monitor Power Rail | IoT Edge Node Signal Conditioning |
Use Scenario: Regulating 13 V supply for optical heart-rate sensor LED drivers in wrist-worn devices. IC Role / Device Role / Timing Role: Low-leakage shunt regulator stabilizing LED bias voltage during pulsed operation. Use Value: Limits average current draw to < 1 µA in standby, extending coin-cell battery life beyond 18 months. |
Use Scenario: Generating stable 13 V reference for analog multiplexer and instrumentation amplifier in LoRaWAN soil moisture nodes. IC Role / Device Role / Timing Role: Voltage reference source for ratiometric sensor excitation and ADC reference scaling. Use Value: Maintains measurement linearity within ±0.1 % FS across −40 °C to +85 °C due to low rdiff and known TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-current Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX58550-C13 | ±5 % tolerance (vs. ±2 %); identical 13 V nominal, same SOD523 package and pinout | Acceptable where cost sensitivity outweighs precision; higher leakage possible in C-series variants | Select when budget constraints dominate and ±5 % regulation error is acceptable in final design margin |
| MMSZ5242B | 12.5 V nominal, ±5 %, SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot, 17 Ω rdiff at 20 mA | Larger footprint and higher power rating; less suitable for space-constrained ultra-low-power layouts | Choose only if board real estate allows larger package and higher current capability is required for downstream loads |
Compared with BZX58550-C13, the BZX58550-B13X offers tighter voltage control and lower leakage, while MMSZ5242B trades precision and size for higher power handling - making the B13X optimal for miniaturized, battery-limited systems demanding stable 13 V references.
Availability
BZX58550-B13X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power MCU reference, wearable health monitor power rail, and IoT edge node signal conditioning requiring stable component supply across extended production cycles.
Supply support for BZX58550-B13X 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 standard logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX58550 series belongs to Nexperia's precision low-current Zener regulator product line, engineered specifically for ultra-low-power voltage reference and biasing in battery-operated and space-constrained electronic systems.
FAQ
What is the maximum continuous reverse current the BZX58550-B13X can handle without degradation?
The device supports up to 200 mA forward current per Absolute Maximum Ratings, but for Zener operation, continuous reverse current must be limited to maintain junction temperature ≤ 150 °C. At ambient 25 °C with 35 mm² cathode copper, maximum IZ is ~23 mA (300 mW ÷ 13 V), confirmed by thermal resistance data and derating curves in the datasheet.
Does the BZX58550-B13X require a series resistor in all applications?
Yes - a current-limiting resistor is mandatory to set operating IZ within 50 µA to 23 mA range. For example, with 15 V supply and 13 V Zener, a 220 Ω resistor establishes ~9.1 mA bias, ensuring stable regulation while staying within Ptot limits and minimizing self-heating effects.
How does the +7.0 mV/K temperature coefficient affect long-term stability in outdoor deployments?
Over −40 °C to +85 °C, the coefficient causes ~0.88 V total drift (125 K × 7.0 mV/K). In precision applications, this is mitigated by pairing with negative-TC components or using the diode in compensated networks - not as a standalone reference, but as a stable element within a broader thermal-aware design.
Can the BZX58550-B13X be used in parallel for higher current capability?
No - Zener diodes exhibit manufacturing spread in VZ, causing current hogging and thermal runaway when paralleled. The datasheet explicitly prohibits parallel connection; for higher current needs, use a single higher-power Zener or an active shunt regulator topology instead.
BZX58550-B13X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX58550
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 270 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.8 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-B13X FAQ
1.How can I place an order for BZX58550-B13X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX58550-B13X 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-B13X reliable?
The price and inventory of BZX58550-B13X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX58550-B13X is usually 5 days.
3.What payment methods are accepted for BZX58550-B13X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX58550-B13X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX58550-B13X?
BZX58550-B13X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX58550-B13X 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-B13X?
For technical support, including BZX58550-B13X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX58550-B13X requirements.
6.How does Aetrix verify that BZX58550-B13X is sourced from the original manufacturer or authorized distributors?
All BZX58550-B13X 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-B13X meets industry standards.
7.What is the process for return or replacement of BZX58550-B13X?
All BZX58550-B13X units undergo pre-shipment inspection (PSI). If there is an issue with BZX58550-B13X, 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-B13X part is unused and in its original packaging.
Return procedure for BZX58550-B13X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX58550-B13X Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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