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Nexperia USA Inc. BZX585-C4V7,135
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- Part No.:
- BZX585-C4V7,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C4V7,135.pdf
- Description:
- DIODE ZENER 4.7V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,210
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Product details
Overview
BZX585-C4V7,135 from Nexperia is a 4.7 V ±5 % Zener voltage regulator diode in SOD523 (SC-79) ultra-small surface-mount package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-voltage reference and overvoltage clamping in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX585-C4V7,135 datasheet, BZX585-C4V7,135 pinout, BZX585-C4V7,135 application, or BZX585-C4V7,135 equivalent, key selection criteria include Zener voltage tolerance (±5 %), differential resistance (425 Ω @ IZ = 5 mA), temperature coefficient (−1.2 to +0.2 mV/K), and thermal resistance (65 K/W junction-to-solder point).
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 4.7 V regulation across 1–5 mA test currents, with low dynamic impedance enabling tight voltage control under varying load conditions. Its SC-79 package supports high-density PCB layouts while delivering 65 K/W thermal resistance to solder point for reliable power handling in ambient temperatures up to +150 °C.
The device exhibits a near-zero temperature coefficient at 4.7 V (−1.2 to +0.2 mV/K), minimizing drift across operating temperature ranges. Reverse leakage remains below 3 µA at VR = 3.0 V, supporting low-power standby regulation without excessive quiescent current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.47 V to 4.94 V at IZ = 5 mA - defines nominal regulation point with ±5 % tolerance for stable reference generation |
| Differential Resistance (rdiff) | 425 Ω (typ) at IZ = 5 mA - determines output impedance and voltage deviation under load transients |
| Temperature Coefficient (SZ) | −1.2 to +0.2 mV/K - enables minimal voltage drift over −65 °C to +150 °C junction range |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - sets continuous DC power limit for thermal design |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression in ESD or inductive switching events |
| Reverse Leakage (IR) | ≤ 3.0 µA at VR = 3.0 V - ensures low standby current in battery-powered or always-on circuits |
| Forward Voltage (VF) | 1.1 V at IF = 100 mA - defines conduction threshold when used as clamp in forward bias |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead plastic package: 1.25 mm × 0.85 mm footprint, 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 package | SOD523 footprint (1.25 × 0.85 mm) enables placement in <1.5 mm pitch routing zones on high-density PCBs |
| Low differential resistance | 425 Ω typical at 5 mA - improves regulation accuracy under load variation vs. higher-rdiff Zeners |
| Controlled temperature coefficient | −1.2 to +0.2 mV/K at 4.7 V - reduces voltage drift to <±10 mV over full −65 °C to +150 °C operating range |
| High surge capability | 40 W non-repetitive peak power for 100 µs - protects downstream circuitry from short-duration transients |
| Low leakage performance | ≤3 µA at 3.0 V reverse bias - preserves battery life in always-on sensor or IoT node applications |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 4.7 V reference for ADC biasing or LDO feedback networks in portable medical sensors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential independent of supply ripple. Use Value: ±5 % tolerance and low rdiff ensure reference stability within ±25 mV across 1–5 mA load changes, meeting 12-bit ADC accuracy requirements. |
Use Scenario: Clamping 5 V USB power rail against ESD or hot-swap surges in USB-C peripheral designs. IC Role / Device Role / Timing Role: Fast-acting shunt element that conducts above 4.94 V to divert transient energy to ground. Use Value: 40 W peak power rating absorbs 100 µs surges without degradation, complementing TVS diodes in multi-stage protection schemes. |
| Low-Power Voltage Monitor | Signal-Level Shifter |
|
Use Scenario: Detecting brown-out conditions in coin-cell-powered wearables by monitoring VDD against 4.7 V threshold. IC Role / Device Role / Timing Role: Reverse-biased Zener used as comparator input reference with microcontroller GPIO. Use Value: ≤3 µA leakage at 3.0 V ensures <1 µA system standby current impact, extending battery life beyond 1 year. |
Use Scenario: Level-shifting 3.3 V logic signals to interface with 5 V legacy peripherals in industrial gateways. IC Role / Device Role / Timing Role: Forward-biased anode-cathode path providing ~1.1 V drop to translate signal thresholds. Use Value: 1.1 V VF at 100 mA enables clean translation without added active components, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B4V7,135 | ±2 % Zener tolerance (vs. ±5 %), 425 Ω rdiff, identical package and thermal specs | Higher precision required in analog sensor front-ends where <±10 mV drift is critical | Select when tighter voltage tolerance justifies cost premium; same PCB footprint and assembly process |
| MMSZ4705T1G | 4.7 V ±5 %, SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot, 300 Ω rdiff @ 5 mA | Higher power handling needed for 12 V rail clamping with longer surge duration | Choose for designs requiring >300 mW continuous dissipation or compatibility with legacy SOD-123 footprints |
Compared with BZX585-B4V7,135, this part trades voltage precision for cost efficiency in non-critical references; versus MMSZ4705T1G, it sacrifices power margin and thermal mass for 55 % smaller board area-ideal for miniaturized edge nodes.
Availability
BZX585-C4V7,135 is available at Aetrix Electronics and suitable for consumer electronics power management, industrial sensor signal conditioning, and IoT endpoint voltage reference applications requiring stable component supply and long-term obsolescence support.
Supply support for BZX585-C4V7,135 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZX585 series targets space-constrained, cost-sensitive regulation needs in portable and embedded systems, emphasizing ultra-small packaging, tight thermal resistance, and ESD-robust Zener performance.
FAQ
What is the maximum continuous reverse current for BZX585-C4V7,135?
The absolute maximum continuous reverse current is derived from its 300 mW power rating and 4.7 V Zener voltage, yielding approximately 64 mA (300 mW ÷ 4.7 V). Operation above this level risks thermal runaway unless board-level copper area and airflow are enhanced per thermal characterization data.
Can BZX585-C4V7,135 replace a 5.1 V Zener in a 5 V rail?
No-it is specified for 4.7 V nominal regulation (4.47–4.94 V), making it unsuitable as a direct replacement for 5.1 V applications. Using it would result in premature conduction and potential over-regulation; select BZX585-C5V1,135 instead for 5.1 V compliance.
How does the SOD523 package affect thermal performance compared to SOD-323?
The SOD523's smaller size reduces thermal mass and junction-to-ambient resistance (350 K/W) but improves junction-to-solder-point resistance (65 K/W), meaning heat transfer relies more heavily on PCB copper area at the cathode pad than ambient convection-unlike larger SOD-323 packages.
Is BZX585-C4V7,135 suitable for automotive applications?
No-this device is not AEC-Q200 qualified. Nexperia explicitly states non-automotive qualification in its legal disclaimers, and the datasheet lacks automotive-grade screening, temperature cycling validation, or failure-in-time (FIT) data required for vehicle systems.
BZX585-C4V7,135 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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 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-C4V7,135 FAQ
1.How can I place an order for BZX585-C4V7,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C4V7,135 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-C4V7,135 reliable?
The price and inventory of BZX585-C4V7,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C4V7,135 is usually 5 days.
3.What payment methods are accepted for BZX585-C4V7,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C4V7,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C4V7,135?
BZX585-C4V7,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C4V7,135 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-C4V7,135?
For technical support, including BZX585-C4V7,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C4V7,135 requirements.
6.How does Aetrix verify that BZX585-C4V7,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-C4V7,135 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-C4V7,135 meets industry standards.
7.What is the process for return or replacement of BZX585-C4V7,135?
All BZX585-C4V7,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C4V7,135, 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-C4V7,135 part is unused and in its original packaging.
Return procedure for BZX585-C4V7,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C4V7,135 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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