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Diodes Incorporated BZT585B3V6T-7
- Part No.:
- BZT585B3V6T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT585B3V6T-7.pdf
- Description:
- DIODE ZENER 3.6V 350MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:45,704
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Product details
Overview
BZT585B3V6T-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal 3.6 V breakdown voltage, ±2.0% tolerance, 90 Ω dynamic impedance at 5 mA, and 350 mW power dissipation in SOD523 package-used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZT585B3V6T-7 datasheet, BZT585B3V6T-7 pinout, BZT585B3V6T-7 application, or BZT585B3V6T-7 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (357 °C/W), reverse leakage (≤5 µA at 1 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations. It delivers precise regulation with temperature coefficient of –1.9 mV/°C and typical junction capacitance of 390 pF at 0 V, enabling use in low-noise reference and biasing applications.
Designed for surface-mount assembly on FR-4 PCBs using minimum pad layout per AP02001, it supports continuous forward current up to 200 mA and withstands operating temperatures from –65 °C to +150 °C with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V nominal, 3.53–3.67 V range at 5 mA - ensures tight voltage reference stability under standard test conditions |
| Zener Impedance (ZZT) | 90 Ω at 5 mA - low dynamic resistance improves regulation against current fluctuations |
| Power Dissipation (PD) | 350 mW - defines maximum steady-state thermal load on SOD523 package with FR-4 mounting |
| Reverse Leakage (IR) | ≤5 µA at 1 V - guarantees minimal parasitic current in high-impedance bias networks |
| Temperature Coefficient | –1.9 mV/°C - enables predictable drift compensation in temperature-sensitive references |
| Junction Capacitance | 390 pF at 1 MHz, 0 V - impacts high-frequency noise rejection and AC coupling behavior |
Pinout & Package
Package: SOD523 - ultra-compact, flat-lead surface-mount plastic case (0.25–0.35 mm height, 1.50–1.70 mm length), UL 94V-0 rated, matte tin-plated terminals solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias configuration; carries forward current up to 200 mA |
| Cathode | Breakdown voltage reference terminal | Marked with band; connected to higher-potential node; defines regulated output voltage at cathode-to-anode polarity |
Key Features
| Feature | Design Value |
|---|---|
| ±2.0% Zener voltage tolerance | Enables direct replacement in precision 3.6 V reference designs without calibration adjustment |
| AEC-Q101 qualified | Validated for automotive electronics including body control modules and sensor interfaces |
| SOD523 low-profile package | Reduces board space by >50% vs. SOD-123 while maintaining 350 mW dissipation capability |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21 requirements with <900 ppm Br/Cl and <1000 ppm Sb |
Applications
| Automotive Sensor Biasing | Portable Device Voltage Reference |
|---|---|
Use Scenario: Providing stable 3.6 V bias to MEMS pressure sensor front-end in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference for ADC input scaling and op-amp offset nulling. Use Value: ±2.0% tolerance and –1.9 mV/°C TC ensure sensor output linearity remains within 0.5% over –40 °C to +125 °C. | Use Scenario: Regulating reference voltage for lithium-ion battery fuel gauge IC in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator supplying clean 3.6 V to coulomb counter analog block. Use Value: 5 µA max reverse leakage at 1 V minimizes standby current drain, extending battery runtime by >8 hours. |
| Industrial IoT Signal Conditioning | Medical Wearable Power Monitoring |
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop transmitter in smart factory sensors. IC Role / Device Role / Timing Role: Shunt voltage clamp protecting DAC output stage from overvoltage transients. Use Value: 90 Ω ZZT maintains regulation within ±15 mV across 1–10 mA load variation, ensuring loop accuracy to ±0.1%. | Use Scenario: Setting threshold voltage for low-battery detection circuit in ECG patch monitors. IC Role / Device Role / Timing Role: Temperature-compensated reference for comparator hysteresis window. Use Value: –1.9 mV/°C TC aligns with silicon bandgap drift, reducing false alarms across patient body temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | 3.6 V nominal, ±5% tolerance, 150 Ω ZZT, SOT-323 package | Higher impedance and looser tolerance reduce reference accuracy in precision analog stages | Select when cost sensitivity outweighs voltage stability requirements |
| BZX84-C3V6 | 3.6 V nominal, ±5% tolerance, 90 Ω ZZT, SOT-23 package | Larger footprint and higher thermal resistance (450 °C/W) limit power handling in dense layouts | Prefer where existing SOT-23 footprint reuse is prioritized over miniaturization |
Compared with MMBZ5226BS-7-F and BZX84-C3V6, BZT585B3V6T-7 offers superior voltage accuracy (±2.0% vs. ±5%), identical Zener impedance, and smallest form factor-making it optimal for space-constrained, high-stability reference designs requiring AEC-Q101 compliance.
Availability
BZT585B3V6T-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, portable device voltage reference, and industrial IoT signal conditioning requiring stable component supply with full traceability and lifecycle management.
Supply support for BZT585B3V6T-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The BZT585 series belongs to Diodes' precision Zener diode product line, engineered specifically for stable voltage reference and regulation in space-constrained, thermally demanding environments-including under-hood automotive and portable medical applications.
FAQ
What is the maximum reverse voltage rating before breakdown for BZT585B3V6T-7?
The BZT585B3V6T-7 has no defined "maximum reverse voltage" rating prior to breakdown-it is designed to operate in controlled reverse breakdown. Its nominal Zener voltage is 3.6 V with ±2.0% tolerance, and breakdown occurs sharply between 3.53 V and 3.67 V at 5 mA test current. Operation below 1 V reverse bias yields ≤5 µA leakage, per datasheet Figure 3.
Can BZT585B3V6T-7 be used in place of a 3.3 V Zener diode like BZT585B3V3T?
No-BZT585B3V6T-7 is not interchangeable with 3.3 V Zeners due to its fixed 3.6 V nominal breakdown voltage. Substituting it into a 3.3 V reference circuit would raise regulated voltage by 0.3 V, potentially exceeding IC input limits or altering bias points. The 3.3 V variant (BZT585B3V3T) has distinct marking code "3H" and tighter 3.23–3.37 V range.
Does BZT585B3V6T-7 require a series current-limiting resistor in all applications?
Yes-like all Zener diodes, BZT585B3V6T-7 requires an external series resistor to limit current and prevent thermal runaway. For example, with 5 V supply and 5 mA Zener current, a 280 Ω resistor sets proper bias. The resistor value must be calculated based on supply voltage, desired Zener current, and worst-case VZ tolerance to ensure power dissipation stays within 350 mW.
Is the SOD523 package of BZT585B3V6T-7 compatible with standard reflow profiles?
Yes-the SOD523 package is qualified for lead-free reflow per JEDEC J-STD-020, with moisture sensitivity level 1 (unlimited floor life at ≤30 °C/60% RH). Recommended peak reflow temperature is 260 °C for ≤10 seconds, matching IPC/JEDEC standards. No pre-baking is required, and the matte tin finish ensures reliable solder joint formation.
BZT585B3V6T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT585B3V6T-7 FAQ
1.How can I place an order for BZT585B3V6T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT585B3V6T-7 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 BZT585B3V6T-7 reliable?
The price and inventory of BZT585B3V6T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT585B3V6T-7 is usually 5 days.
3.What payment methods are accepted for BZT585B3V6T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT585B3V6T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT585B3V6T-7?
BZT585B3V6T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT585B3V6T-7 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 BZT585B3V6T-7?
For technical support, including BZT585B3V6T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT585B3V6T-7 requirements.
6.How does Aetrix verify that BZT585B3V6T-7 is sourced from the original manufacturer or authorized distributors?
All BZT585B3V6T-7 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 BZT585B3V6T-7 meets industry standards.
7.What is the process for return or replacement of BZT585B3V6T-7?
All BZT585B3V6T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT585B3V6T-7, 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 BZT585B3V6T-7 part is unused and in its original packaging.
Return procedure for BZT585B3V6T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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