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Nexperia USA Inc. BZX585-B2V7,135
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- Part No.:
- BZX585-B2V7,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B2V7,135.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,953
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Product details
Overview
BZX585-B2V7,135 from Nexperia is a 2.7 V ±2 % Zener voltage regulator diode in an 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-B2V7,135 datasheet, BZX585-B2V7,135 pinout, BZX585-B2V7,135 application, or BZX585-B2V7,135 equivalent, this device delivers stable 2.7 V regulation at 5 mA with 300 Ω typical differential resistance, low 1.1 V forward voltage at 100 mA, and −1.4 mV/K temperature coefficient - critical for battery-powered sensor biasing and USB port protection circuits.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 2.7 V reference across load and line variations, with tight ±2 % tolerance ensuring accuracy in feedback networks of DC-DC converters and LDOs. Its low 300 Ω differential resistance at IZ = 5 mA minimizes output voltage drift under current changes.
Designed for ambient temperatures from −65 °C to +150 °C and junction temperatures up to 150 °C, it supports reliable operation in thermally demanding environments. The SOD523 package provides minimal thermal resistance (65 K/W to solder point), enabling effective heat dissipation on compact PCBs with limited copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 2.7 V nominal, ±2 % tolerance at IZ = 5 mA - ensures precise voltage reference for feedback loops in low-power regulators. |
| Differential resistance (rdiff) | 300 Ω typical at IZ = 5 mA - limits output voltage variation under changing load current. |
| Temperature coefficient (SZ) | −1.4 mV/K at IZ = 5 mA - enables predictable drift compensation in temperature-sensitive analog circuits. |
| Total power dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 with 35 mm² cathode copper - defines continuous safe operating power in standard PCB layouts. |
| Non-repetitive peak reverse power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression in ESD-prone interfaces. |
| Forward voltage (VF) | 1.1 V max at IF = 100 mA - ensures low conduction loss when used as a forward-biased clamp or LED driver series element. |
| Reverse current (IR) | 20 µA max at VR = 1 V - guarantees minimal leakage in high-impedance sensing nodes. |
Pinout & Package
SOD523 (SC-79) plastic surface-mounted 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 - essential for correct polarity in shunt regulation and clamping. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration establishes Zener breakdown voltage across terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOD523 footprint | Enables placement in dense portable electronics (e.g., wearables, IoT sensors) where board space is constrained to <1.1 mm² per device. |
| ±2 % Zener voltage tolerance | Reduces need for external trimming in precision 2.7 V reference applications such as ADC voltage references and microcontroller reset thresholds. |
| Low 300 Ω differential resistance | Maintains regulation stability under dynamic load steps common in digital IC power domains, minimizing output ripple. |
| −1.4 mV/K temperature coefficient | Supports predictable voltage drift behavior across −40 °C to +85 °C operating range, simplifying thermal compensation design. |
| 40 W non-repetitive surge rating | Provides robust transient immunity against ESD events per IEC 61000-4-2 Level 4 without requiring additional TVS devices. |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit Reference |
|---|---|
|
Use Scenario: Clamping 5 V USB VBUS line against surges during hot-plug or faulty chargers. IC Role / Device Role / Timing Role: Shunt Zener clamp placed between VBUS and GND, conducting only above 2.7 V to limit downstream voltage. Use Value: Prevents damage to 3.3 V logic interface ICs by limiting excursion to ≤3.0 V during 100 µs transients, leveraging 40 W surge rating. |
Use Scenario: Generating a stable 2.7 V threshold for brown-out detection in ARM Cortex-M0+ microcontrollers. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in reset generator circuit. Use Value: ±2 % tolerance ensures reset assertion within 2.65–2.75 V window across temperature, eliminating false resets during battery discharge. |
| Low-Power Sensor Biasing | Li-ion Battery Voltage Monitor Divider |
|
Use Scenario: Providing stable bias voltage for MEMS accelerometer analog front-end in always-on wearable mode. IC Role / Device Role / Timing Role: Low-current Zener reference sourcing <10 µA to op-amp bias network. Use Value: 20 µA max reverse leakage at 1 V ensures <1 µA quiescent error in 100 kΩ bias divider, preserving nanoamp sleep current. |
Use Scenario: Setting upper threshold in two-resistor voltage divider monitoring single-cell Li-ion pack (4.2 V max). IC Role / Device Role / Timing Role: Zener-based reference replacing resistive divider to improve accuracy against supply variation. Use Value: −1.4 mV/K tempco matches typical battery voltage drift, reducing SOC estimation error by >0.5% over −20 °C to +60 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C2V7,115 | ±5 % tolerance (vs. ±2 %), same 2.7 V nominal, identical SOD523 package and thermal specs. | Acceptable where cost sensitivity outweighs precision requirement, e.g., non-critical power-good indicators. | Select when tighter tolerance is unnecessary and BOM cost reduction is prioritized over reference accuracy. |
| MMSZ4678T1G | 2.7 V ±5 %, SOD-123 package (2.7 mm × 1.6 mm), higher 500 mW Ptot, 30 Ω rdiff at 20 mA. | Preferred for higher-power clamping or where board layout allows larger footprint and better thermal performance is needed. | Choose when 300 mW dissipation is insufficient or lower dynamic impedance at higher test current improves regulation stability. |
Compared with BZX585-C2V7,115, the BZX585-B2V7,135 offers twice the voltage accuracy for precision references; versus MMSZ4678T1G, it trades 40 % smaller footprint and lower surge capability for space-constrained designs where 300 mW suffices.
Availability
BZX585-B2V7,135 is available at Aetrix Electronics and suitable for USB power management, microcontroller reset generation, low-power sensor biasing, and Li-ion battery monitoring requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX585-B2V7,135 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 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 ultra-small size and tight tolerance are critical.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
The BZX585-B2V7,135 has no specified maximum continuous reverse current; its safe operating limit is defined by total power dissipation. At 25 °C ambient on FR4 with 35 mm² cathode copper, it supports up to 111 mA (300 mW ÷ 2.7 V) continuously without exceeding 150 °C junction temperature.
Can this diode be used in forward conduction mode as a low-VF switch?
Yes - with a maximum forward voltage of 1.1 V at 100 mA and 0.9 V at 10 mA, it functions as a low-drop series element in current-limiting or LED bias paths, though its primary design intent and characterization focus remain reverse-bias Zener regulation.
How does the −1.4 mV/K temperature coefficient affect long-term stability in outdoor deployments?
Over a −40 °C to +85 °C ambient range, the Zener voltage shifts by approximately −175 mV (−1.4 mV/K × 125 K), resulting in a 2.53 V to 2.87 V span. This is acceptable for non-precision biasing but requires calibration or compensation in metrology-grade applications.
Is the SOD523 package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended solder land pattern (Fig. 12) uses 0.5 mm pad width, 1.4 mm length, and 0.4 mm spacing, supporting peak temperatures up to 260 °C for ≤30 seconds without degradation.
BZX585-B2V7,135 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):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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-B2V7,135 FAQ
1.How can I place an order for BZX585-B2V7,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B2V7,135 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-B2V7,135 reliable?
The price and inventory of BZX585-B2V7,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B2V7,135 is usually 5 days.
3.What payment methods are accepted for BZX585-B2V7,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B2V7,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B2V7,135?
BZX585-B2V7,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B2V7,135 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-B2V7,135?
For technical support, including BZX585-B2V7,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B2V7,135 requirements.
6.How does Aetrix verify that BZX585-B2V7,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-B2V7,135 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-B2V7,135 meets industry standards.
7.What is the process for return or replacement of BZX585-B2V7,135?
All BZX585-B2V7,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B2V7,135, 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-B2V7,135 part is unused and in its original packaging.
Return procedure for BZX585-B2V7,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B2V7,135 Tags
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