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Nexperia USA Inc. BZX585-C7V5,115
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- Part No.:
- BZX585-C7V5,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C7V5,115.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:15,744
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Product details
Overview
BZX585-C7V5 from Nexperia is a 7.5 V ±5 % Zener voltage regulator diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-power voltage reference and overvoltage clamping in space-constrained analog circuits.
For engineers reviewing the BZX585-C7V5 datasheet, BZX585-C7V5 pinout, BZX585-C7V5 application, or BZX585-C7V5 equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, thermal resistance, and cathode/anode terminal mapping - all confirmed from Nexperia's Rev. 8 product data sheet dated 6 August 2026.
Technical Context
This Zener diode operates in reverse breakdown with a nominal Zener voltage of 7.5 V at IZ = 5 mA, exhibiting a typical differential resistance of 15 Ω and a positive temperature coefficient of +2.5 to +3.6 mV/K across its operating current range. Its low 1.1 V forward voltage at 100 mA supports bidirectional protection use cases.
Designed for surface-mount integration on FR4 PCBs with ≥35 mm² copper area at the cathode tab, it achieves Rth(j-a) = 350 K/W and Rth(j-sp) = 65 K/W, enabling reliable thermal performance in ambient temperatures from −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13 V to 7.88 V at IZ = 5 mA - defines stable regulation point with ±5 % tolerance |
| Differential Resistance (rdiff) | 15 Ω typ. at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +2.5 to +3.6 mV/K - quantifies voltage drift per degree Celsius rise in junction temperature |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB - sets continuous DC power handling limit |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient surge suppression without failure |
| Reverse Current (IR) | ≤1.0 µA at VR = 5.3 V - ensures low leakage below knee voltage for stable biasing |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - supports use as bidirectional clamp or ESD path |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead plastic package: 1.25 mm × 0.85 mm body, 0.65 mm height, cathode marked by bar on top surface.
| 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-compact SMD footprint | SOD523 package (1.25 × 0.85 mm) enables placement in high-density portable and wearable PCB layouts |
| Low differential resistance | 15 Ω typical at 5 mA improves regulation accuracy under varying load currents |
| Controlled temperature coefficient | +2.5 to +3.6 mV/K allows predictable voltage drift compensation in temperature-stable references |
| High surge robustness | 40 W non-repetitive peak power rating supports transient overvoltage clamping in I/O protection circuits |
| Low leakage performance | ≤1.0 µA reverse current at 5.3 V ensures minimal quiescent power loss in battery-powered systems |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 7.5 V reference for ADC biasing or op-amp feedback networks in low-power sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to maintain fixed voltage across shunt load. Use Value: Delivers ±5 % regulation accuracy with <15 Ω dynamic impedance, minimizing error contribution to measurement circuits. |
Use Scenario: Protecting microcontroller GPIO pins from ESD or inductive kickback in industrial control modules. IC Role / Device Role / Timing Role: Bidirectional clamping device limiting voltage excursions above 7.88 V or below −1.1 V. Use Value: Absorbs 40 W transient surges (100 µs) while maintaining sub-µA leakage in standby, preserving signal integrity. |
| Low-Power Bias Generator | Signal-Level Voltage Limiter |
|
Use Scenario: Generating precise bias points for RF amplifier stages in compact IoT transceivers. IC Role / Device Role / Timing Role: Shunt regulator establishing DC operating point independent of supply variation. Use Value: Maintains 7.5 V reference with <3.6 mV/K thermal drift, reducing calibration frequency in field-deployed units. |
Use Scenario: Constraining audio line-level signals to prevent clipping or distortion in headphone driver circuits. IC Role / Device Role / Timing Role: Fast-response voltage limiter clamping peaks beyond ±7.88 V/−1.1 V thresholds. Use Value: Achieves <100 ns response to transients due to low junction capacitance (<4 pF), preserving signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B7V5 | ±2 % tolerance (7.35–7.65 V) vs. ±5 % (7.13–7.88 V); identical package and power ratings | Higher precision required in metrology-grade references where tighter voltage stability is critical | Select when absolute regulation accuracy outweighs cost sensitivity; same thermal and layout compatibility |
| MMSZ5236B-TP | 7.5 V ±5 %, SOD-123 package (2.7 × 1.4 mm), Ptot = 500 mW, rdiff = 30 Ω | Higher power handling needed in higher-current bias networks; larger footprint acceptable | Choose for designs requiring >300 mW continuous dissipation or legacy SOD-123 board compatibility |
Compared with BZX585-C7V5, the BZX585-B7V5 offers tighter voltage tolerance at identical size and surge capability, while MMSZ5236B-TP trades miniaturization for higher power and relaxed dynamic impedance - making each optimal for distinct trade-offs between precision, density, and thermal margin.
Availability
BZX585-C7V5 is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage protection, and signal-level clamping applications requiring stable component supply in high-volume consumer electronics, portable instrumentation, and industrial sensor interfaces.
Supply support for BZX585-C7V5 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-enhancing components, delivering high-performance, reliable, and sustainable solutions for automotive, industrial, and consumer markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for space-constrained, low-power regulation and clamping functions in modern SMD-based electronics.
FAQ
What is the maximum continuous reverse current for BZX585-C7V5?
The maximum continuous reverse current is not directly specified, but derived from Ptot = 300 mW and VZ ≈ 7.5 V, yielding IZ(max) ≈ 40 mA at 25 °C ambient. Derating applies above 25 °C per the thermal resistance Rth(j-a) = 350 K/W, limiting usable current in elevated ambient conditions.
How does the cathode marking appear on the SOD523 package?
The cathode is identified by a visible bar printed on the top surface of the SOD523 package, aligned with pin 1. This marking matches the simplified outline in Nexperia's datasheet Figure 11 and corresponds to the "K" terminal in Table 2 (Pinning Information).
Can BZX585-C7V5 be used in bidirectional ESD protection?
Yes - its 1.1 V forward voltage at 100 mA and 7.5 V reverse Zener voltage enable symmetrical clamping between −1.1 V and +7.88 V. However, dedicated ESD arrays offer lower capacitance and faster response; this diode suits moderate-speed, low-capacitance (<4 pF) I/O line protection where dual-voltage limiting is sufficient.
What is the recommended PCB pad layout for reflow soldering?
Nexperia specifies a reflow footprint in Figure 12: 0.6 mm × 0.5 mm solder lands (2×), 0.4 mm × 0.5 mm solder resist openings (2×), and 2.15 mm × 1.4 mm total occupied area. Use this geometry to ensure mechanical reliability and thermal conduction from the cathode tab to the PCB copper pour.
BZX585-C7V5,115 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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-C7V5,115 FAQ
1.How can I place an order for BZX585-C7V5,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C7V5,115 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-C7V5,115 reliable?
The price and inventory of BZX585-C7V5,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C7V5,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C7V5,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C7V5,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C7V5,115?
BZX585-C7V5,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C7V5,115 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-C7V5,115?
For technical support, including BZX585-C7V5,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C7V5,115 requirements.
6.How does Aetrix verify that BZX585-C7V5,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C7V5,115 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-C7V5,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C7V5,115?
All BZX585-C7V5,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C7V5,115, 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-C7V5,115 part is unused and in its original packaging.
Return procedure for BZX585-C7V5,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C7V5,115 Tags
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