My Inquiry
My Account
Nexperia USA Inc. BZX585-B5V1,135
.jpg)
- Part No.:
- BZX585-B5V1,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-B5V1,135.pdf
- Description:
- DIODE ZENER 5.1V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:34,128
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX585-B5V1,135 from Nexperia is a ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 5.1 V nominal regulation voltage at 5 mA, with 400 Ω typical differential resistance and 300 mW total power dissipation. It delivers stable voltage reference and overvoltage protection in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX585-B5V1,135 datasheet, BZX585-B5V1,135 pinout, BZX585-B5V1,135 application, or BZX585-B5V1,135 equivalent, this part supports precision low-current biasing, ESD-tolerant signal clamping, and compact DC rail stabilization where thermal resistance to solder point (65 K/W) and ultra-small footprint are critical selection criteria.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified 5.1 V nominal Zener voltage (VZ) at IZ = 5 mA, exhibiting a temperature coefficient of −2.7 to −0.5 mV/K across its operating current range. Its low 400 Ω differential resistance ensures minimal voltage shift under load variation.
The device features non-repetitive peak reverse power dissipation of 40 W (tp = 100 µs), enabling transient surge suppression, while maintaining 300 mW steady-state power handling on FR4 PCB with 35 mm² copper area. Junction-to-solder-point thermal resistance is 65 K/W, supporting reliable operation in thermally dense layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ 5 mA | 5.00 V to 5.20 V - precise regulation window for low-voltage reference circuits |
| rdiff | 400 Ω typ. - low dynamic impedance minimizes output voltage drift with current changes |
| Ptot | 300 mW - maximum continuous power dissipation on standard FR4 PCB |
| PZSM | 40 W - non-repetitive surge capability for short-duration transients (100 µs square wave) |
| Rth(j-sp) | 65 K/W - thermal resistance from junction to cathode solder point, critical for thermal design |
| IR @ VR = 3.0 V | 2.0 µA max - low leakage enables high-impedance bias networks without loading error |
| Cd @ 1 MHz, 0 V | 2.0 pF - minimal junction capacitance preserves high-frequency signal integrity |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount 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 |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VZ tolerance | Enables tight regulation without post-production trimming in cost-sensitive designs |
| Ultra-small SOD523 footprint | 0.85 mm × 1.25 mm area saves board space in wearables, IoT sensors, and portable electronics |
| Low rdiff (400 Ω typ.) | Reduces voltage deviation under varying load currents, improving reference stability |
| 65 K/W Rth(j-sp) | Supports higher sustained power in thermally constrained layouts via direct cathode thermal path |
| 40 W non-repetitive surge rating | Provides robustness against ESD and line transients without external TVS supplementation |
Applications
| USB Port Voltage Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB data/power lines against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Zener diode acting as bidirectional shunt clamp between VBUS and GND. Use Value: 2.0 pF capacitance avoids signal integrity degradation on D+/D− lines; 40 W surge rating absorbs IEC 61000-4-2 contact discharge. |
Use Scenario: Generating clean, temperature-stable reset threshold for 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in RC-based reset generator. Use Value: ±2 % VZ tolerance and −2.7 to −0.5 mV/K tempco ensure reset assertion within 10 mV over −40 °C to +85 °C. |
| Low-Power Sensor Biasing | LED Current Regulation |
Use Scenario: Providing stable bias voltage to analog sensor front-ends in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-current Zener reference (IZ = 1–5 mA) replacing active regulators to minimize quiescent current. Use Value: 2.0 µA max reverse leakage at 3.0 V prevents measurable battery drain; 300 mW rating allows safe operation at 5.1 V/1 mA (5.1 mW). |
Use Scenario: Setting constant current for indicator LEDs in space-limited control panels. IC Role / Device Role / Timing Role: Shunt regulator in series with LED and current-limiting resistor to stabilize forward voltage drop. Use Value: 400 Ω rdiff maintains <±20 mV current variation across 10–20 mA LED drive range, ensuring consistent brightness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-C5V1,135 | ±5 % VZ tolerance vs. ±2 %; otherwise identical package, power, and thermal specs | Acceptable where tighter regulation not required; lower cost in high-volume production | Select when budget constraints outweigh need for tight voltage accuracy |
| MMSZ5222B-7-F | Same 5.1 V nominal, ±5 % tolerance, but SOD-123 package (larger: 2.7 × 1.4 mm); Rth(j-a) = 500 K/W | Less suitable for ultra-dense layouts; higher thermal resistance limits sustained power | Choose only if SOD-123 footprint already standardized and thermal margin permits |
Compared with BZX585-C5V1,135, the BZX585-B5V1,135 offers tighter regulation for precision references; compared with MMSZ5222B-7-F, it delivers superior thermal performance and 40 % smaller footprint-critical for miniaturized power management.
Availability
BZX585-B5V1,135 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset generation, low-power sensor biasing, and LED current regulation requiring stable component supply and guaranteed long-term sourcing.
Supply support for BZX585-B5V1,135 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for compact, high-reliability voltage regulation and transient suppression in space- and power-constrained applications.
FAQ
What is the maximum continuous reverse current for BZX585-B5V1,135 at 25 °C ambient?
The absolute maximum forward current is 200 mA, but for Zener operation, the recommended continuous reverse current is limited by power dissipation: at 5.1 V, IZ ≤ 59 mA ensures Ptot ≤ 300 mW. Derating applies above 25 °C per the thermal resistance curve.
Does BZX585-B5V1,135 support reflow soldering, and what profile is recommended?
Yes, it is qualified for lead-free reflow per J-STD-020. The recommended peak temperature is 260 °C for ≤ 30 seconds, with ramp-up rate ≤ 3 °C/s. Figure 12 in the datasheet provides the exact SOD523 solder pad layout and stencil specifications.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
At IZ = 5 mA, the temperature coefficient ranges from −2.7 to −0.5 mV/K. Over −40 °C to +125 °C (ΔT = 165 K), worst-case VZ shift is ±0.44 V, resulting in 5.1 V ±8.6 %-within specification for most non-precision applications.
Can BZX585-B5V1,135 be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing spread in VZ, causing current hogging and thermal runaway. Parallel operation is not recommended. For higher power, use a single higher-rated Zener or switch to an active regulator topology.
BZX585-B5V1,135 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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-B5V1,135 FAQ
1.How can I place an order for BZX585-B5V1,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-B5V1,135 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-B5V1,135 reliable?
The price and inventory of BZX585-B5V1,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-B5V1,135 is usually 5 days.
3.What payment methods are accepted for BZX585-B5V1,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-B5V1,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-B5V1,135?
BZX585-B5V1,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-B5V1,135 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-B5V1,135?
For technical support, including BZX585-B5V1,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-B5V1,135 requirements.
6.How does Aetrix verify that BZX585-B5V1,135 is sourced from the original manufacturer or authorized distributors?
All BZX585-B5V1,135 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-B5V1,135 meets industry standards.
7.What is the process for return or replacement of BZX585-B5V1,135?
All BZX585-B5V1,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-B5V1,135, 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-B5V1,135 part is unused and in its original packaging.
Return procedure for BZX585-B5V1,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-B5V1,135 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
