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Nexperia USA Inc. BZX585-B7V5,115
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- Part No.:
- BZX585-B7V5,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B7V5,115.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,953
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Product details
Overview
BZX585-B7V5,115 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 7.5 V nominal regulation at 5 mA, with 300 mW total power dissipation and 15 Ω typical differential resistance at IZ = 5 mA - used for precision voltage reference and overvoltage clamping in space-constrained power management circuits.
For engineers reviewing the BZX585-B7V5,115 datasheet, BZX585-B7V5,115 pinout, BZX585-B7V5,115 application, or BZX585-B7V5,115 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (Rth(j-sp) = 65 K/W), non-repetitive surge capability (40 W @ 100 µs), and cathode-marked SOD523 footprint compatibility.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable 7.5 V across its terminals when biased above VZ with ≥1 mA current. Its temperature coefficient of +2.5 mV/K at IZ = 5 mA enables predictable drift compensation in bias networks.
Designed for surface-mount use on FR4 PCBs with ≥35 mm² copper at the cathode tab, it achieves Rth(j-a) = 350 K/W (free air) and Rth(j-sp) = 65 K/W (solder point), supporting reliable operation up to Tj = 150 °C under pulsed or continuous DC conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.35 V to 7.65 V at IZ = 5 mA - ensures ±2 % regulation accuracy for low-power reference nodes |
| Differential Resistance (rdiff) | 15 Ω typ. at IZ = 5 mA - minimizes output voltage variation under load current changes |
| Temperature Coefficient (SZ) | +2.5 mV/K at IZ = 5 mA - enables predictable positive drift for thermal compensation design |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² cathode copper - defines continuous DC thermal limit |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs, square wave - supports transient overvoltage suppression without failure |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - confirms low-loss forward conduction for polarity-sensitive protection |
| Junction Temperature Range | −65 °C to +150 °C - qualifies for industrial and extended-temperature embedded applications |
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; designed for reflow soldering with standardized footprint per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in precision analog supplies |
| Low 15 Ω differential resistance | Minimizes output impedance shift across 1–10 mA operating range, improving line/load regulation stability |
| 40 W non-repetitive surge rating | Withstands ESD and inductive kick transients without degradation when used with series current limiting |
| Rth(j-sp) = 65 K/W | Enables efficient heat transfer from junction to solder joint, supporting higher pulse duty cycles on compact PCBs |
| SOD523 footprint compatibility | Matches industry-standard SC-79 land pattern, allowing drop-in replacement in high-density portable designs |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 7.5 V reference for ADC biasing and op-amp feedback networks in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Two-terminal shunt regulator establishing precise DC reference potential independent of supply ripple. Use Value: ±2 % VZ tolerance and +2.5 mV/K temperature coefficient allow calibrated offset correction in firmware without external trimming. |
Use Scenario: Protecting microcontroller GPIO pins from 12 V rail transients in automotive body-control modules. IC Role / Device Role / Timing Role: Fast-acting reverse-biased clamp diverting surge current away from sensitive inputs during load-dump events. Use Value: 40 W non-repetitive peak power rating sustains 100 µs surges up to 5.3 A without parametric shift or failure. |
| Low-Power Bias Network | Signal-Level Voltage Limiter |
Use Scenario: Generating fixed 7.5 V bias for RF front-end LNA stages in 2.4 GHz wireless transceivers. IC Role / Device Role / Timing Role: Low-noise Zener source replacing active regulators to minimize phase noise contribution in signal chains. Use Value: 1.0 pF diode capacitance at VR = 0 V preserves high-frequency impedance integrity up to UHF bands. |
Use Scenario: Limiting analog sensor output swing to 7.5 V before feeding into 8-bit MCU ADC with 5 V reference. IC Role / Device Role / Timing Role: Passive clipping element preventing ADC saturation while maintaining signal fidelity below clamp threshold. Use Value: 15 Ω rdiff ensures <10 mV error at 0.5 mA overload current, preserving measurement resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C7V5 | ±5 % tolerance (7.13–7.88 V), higher rdiff (20 Ω typ.), same package and PZSM | Acceptable where reference accuracy < ±3 % suffices; less suitable for precision biasing | Select for cost-sensitive designs where tighter VZ tolerance is unnecessary |
| MMSZ5236B-7-F | ±5 % tolerance (7.14–7.86 V), SOD-123 package (larger), 500 mW Ptot, rdiff = 10 Ω typ. | Higher power handling but incompatible footprint; requires PCB redesign | Choose only when board layout allows larger package and higher continuous dissipation is required |
Compared with BZX585-C7V5, the BZX585-B7V5,115 delivers tighter regulation and lower dynamic impedance for precision references; versus MMSZ5236B-7-F, it trades power margin for ultra-compact size and thermal efficiency in space-limited layouts.
Availability
BZX585-B7V5,115 is available at Aetrix Electronics and suitable for voltage reference generation, overvoltage protection, low-power bias networks, and signal-level clamping requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX585-B7V5,115 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in advanced packaging and automotive-qualified components.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, thermally efficient voltage regulation in consumer, industrial, and communications equipment where SOD523 footprint and ±2 % accuracy are critical.
FAQ
What is the maximum continuous reverse current for BZX585-B7V5,115 at 25 °C ambient?
The device supports up to 40 mA continuous reverse current at 25 °C ambient when mounted on an FR4 PCB with 35 mm² copper at the cathode tab, derived from its 300 mW total power dissipation rating and 7.5 V Zener voltage (Ptot/VZ ≈ 40 mA). Exceeding this requires derating per thermal resistance curves.
How does the +2.5 mV/K temperature coefficient affect long-term stability in a 50 °C ambient environment?
At a 25 °C to 50 °C ambient rise, the Zener voltage increases by approximately +62.5 mV (25 K × 2.5 mV/K), shifting nominal 7.5 V to ~7.562 V. This predictable positive drift enables firmware-based calibration or passive compensation using NTC thermistors in high-stability reference designs.
Can BZX585-B7V5,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients at low currents and positive ones at higher currents, causing current hogging and thermal runaway when paralleled. For higher power, use a single higher-rated device or active regulation instead of parallel Zeners.
Is the SOD523 package compatible with standard automated optical inspection (AOI) systems?
Yes - the SOD523 package features a visible cathode marking bar and consistent 1.25 mm × 0.85 mm outline, meeting IPC-A-610 Class 2/3 requirements for AOI detectability. Its flat-lead geometry and solder joint contrast support reliable automated defect detection in high-volume SMT lines.
BZX585-B7V5,115 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:
- ±2%
- 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-B7V5,115 FAQ
1.How can I place an order for BZX585-B7V5,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B7V5,115 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-B7V5,115 reliable?
The price and inventory of BZX585-B7V5,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B7V5,115 is usually 5 days.
3.What payment methods are accepted for BZX585-B7V5,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B7V5,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B7V5,115?
BZX585-B7V5,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B7V5,115 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-B7V5,115?
For technical support, including BZX585-B7V5,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B7V5,115 requirements.
6.How does Aetrix verify that BZX585-B7V5,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-B7V5,115 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-B7V5,115 meets industry standards.
7.What is the process for return or replacement of BZX585-B7V5,115?
All BZX585-B7V5,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B7V5,115, 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-B7V5,115 part is unused and in its original packaging.
Return procedure for BZX585-B7V5,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B7V5,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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