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Nexperia USA Inc. BZX585-C56,115
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- Part No.:
- BZX585-C56,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C56,115.pdf
- Description:
- DIODE ZENER 56V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:5,869
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Product details
Overview
BZX585-C56,115 from Nexperia is a ±5 % tolerance Zener diode in SOD523 (SC-79) package, rated for 56 V nominal Zener voltage at 2 mA test current, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power, used for precision voltage regulation in space-constrained low-power analog circuits.
For engineers reviewing the BZX585-C56,115 datasheet, BZX585-C56,115 pinout, BZX585-C56,115 application, or BZX585-C56,115 equivalent, this part supports stable reference generation in battery-powered sensors, low-voltage LDO bias networks, and overvoltage clamp protection where ultra-small footprint and tight voltage tolerance are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 56 V (min 53.2 V, max 58.8 V) at IZ = 2 mA, exhibiting a typical differential resistance of 100 Ω and temperature coefficient of +52.2 mV/K at that current. Its low 0.05 µA reverse leakage at 40 V enables high-impedance reference stability.
The device features an ultra-compact SOD523 plastic surface-mount package with cathode-marked lead configuration, optimized for reflow soldering on FR4 PCBs with ≥35 mm² copper area at the cathode tab to maintain thermal resistance ≤65 K/W to solder point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V nominal at IZ = 2 mA; min/max 53.2 V/58.8 V defines regulation window for precision biasing |
| Tolerance | ±5 % ensures predictable clamping level across production lots without post-selection |
| Total Power Dissipation | 300 mW at Tamb = 25 °C with 35 mm² Cu pad - sets continuous DC regulation limit in compact layouts |
| Non-repetitive Peak Reverse Power | 40 W for tp = 100 µs square wave - supports transient surge suppression in ESD-critical nodes |
| Differential Resistance | 100 Ω typical at IZ = 2 mA - determines output impedance and load regulation error in reference circuits |
| Reverse Leakage Current | 0.05 µA max at VR = 40 V - minimizes quiescent current draw in high-impedance sensing paths |
| Thermal Resistance (j–sp) | 65 K/W to solder point - enables accurate junction temperature estimation during pulsed operation |
Pinout & Package
Package: SOD523 (SC-79), ultra-small flat-lead surface-mount plastic package (1.25 mm × 0.85 mm × 0.65 mm), cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction; marked side on package |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for voltage reference function |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SMD footprint | SOD523 (1.25 × 0.85 mm) enables placement in dense portable electronics without sacrificing regulation accuracy |
| Low differential resistance | 100 Ω typical improves line/load regulation in 56 V reference chains driving 10 kΩ+ loads |
| Controlled temperature coefficient | +52.2 mV/K at 2 mA allows predictable drift compensation in temperature-stable references |
| High surge robustness | 40 W non-repetitive peak power rating supports IEC 61000-4-5 Level 3 surge immunity in interface protection |
| Low leakage at sub-Zener voltage | 0.05 µA max at 40 V reduces standby current in always-on sensor bias rails |
Applications
| Industrial Sensor Biasing | USB-C Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 56 V reference for analog front-end gain calibration in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node voltage independent of supply variation. Use Value: ±5 % tolerance and 100 Ω rdiff ensure <1.2 % full-scale error across 0–70 °C ambient range. |
Use Scenario: Clamping VBUS line against 60 V transients during hot-plug events in USB-C PD sink designs. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing short-duration surges before downstream PMIC damage occurs. Use Value: 40 W peak power rating handles 100 µs IEC 61000-4-5 surges up to 1.2 A without degradation. |
| Low-Power IoT Node Reference | LDO Feedback Divider Stabilization |
|
Use Scenario: Generating precise 56 V bias for op-amp input stage in battery-operated gas detection modules. IC Role / Device Role / Timing Role: Voltage reference element establishing known potential for signal conditioning circuitry. Use Value: 0.05 µA reverse leakage preserves >10-year battery life in 20 µA sleep-mode systems. |
Use Scenario: Stabilizing feedback divider network in adjustable 56 V-output LDO regulators for telecom line cards. IC Role / Device Role / Timing Role: Low-impedance Zener shunt maintaining fixed reference voltage despite resistor tolerance drift. Use Value: 100 Ω rdiff limits divider ratio error to <0.3 % under 1 mA load variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B56,115 | ±2 % tolerance vs. ±5 %; otherwise identical electrical specs and package | Required where tighter regulation stability is needed for metrology-grade references | Select when absolute voltage accuracy outweighs cost sensitivity |
| MMSZ5256ET1G | Same 56 V rating but SOD-123 package (2.7 × 1.4 mm); 500 mW Ptot; ±5 % | Preferred for higher-power or thermally less constrained designs needing easier handling | Choose when board space permits larger footprint and higher continuous dissipation is required |
Compared with BZX585-C56,115, the BZX585-B56,115 offers superior voltage accuracy at identical size, while MMSZ5256ET1G trades miniaturization for higher power handling and manufacturability - selection depends on whether precision, footprint, or thermal margin dominates the design constraint.
Availability
BZX585-C56,115 is available at Aetrix Electronics and suitable for industrial sensor biasing, USB-C port overvoltage clamp, and low-power IoT node reference requiring stable component supply with guaranteed long-term sourcing.
Supply support for BZX585-C56,115 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 delivering high-performance logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for consumer, industrial, and automotive markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained voltage regulation and clamping in portable and battery-powered electronics where SOD523 footprint and tight tolerance are essential.
FAQ
What is the maximum continuous forward current rating for BZX585-C56,115?
The device is not rated for continuous forward conduction; its primary function is reverse-bias Zener operation. Absolute maximum forward current is 200 mA per limiting values table, but sustained forward bias degrades regulation performance and is not recommended in normal use.
Can BZX585-C56,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages, causing current hogging and thermal runaway when paralleled. Use a single higher-rated device like MMSZ5256ET1G instead for increased power capability.
How does the cathode marking appear on the SOD523 package?
A distinct dark band is printed on the top surface adjacent to pin 1 (cathode), aligned with the flat edge of the SOD523 outline per Figure 11 in the datasheet - this matches the "marking bar indicates cathode" note in pinning information.
Is BZX585-C56,115 suitable for automotive applications?
No - this part is not AEC-Q200 qualified and lacks automotive-specific testing or qualification. Nexperia explicitly states non-automotive qualified products are unsuitable for safety-critical or automotive use per legal disclaimers in section 14.
BZX585-C56,115 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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 39.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX585-C56,115 FAQ
1.How can I place an order for BZX585-C56,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C56,115 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 BZX585-C56,115 reliable?
The price and inventory of BZX585-C56,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C56,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C56,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C56,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C56,115?
BZX585-C56,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C56,115 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 BZX585-C56,115?
For technical support, including BZX585-C56,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C56,115 requirements.
6.How does Aetrix verify that BZX585-C56,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C56,115 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 BZX585-C56,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C56,115?
All BZX585-C56,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C56,115, 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 BZX585-C56,115 part is unused and in its original packaging.
Return procedure for BZX585-C56,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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