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Vishay General Semiconductor - Diodes Division BZM55B3V6-TR
- Part No.:
- BZM55B3V6-TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- 2-SMD, No Lead
- Datasheet:
-
BZM55B3V6-TR.pdf
- Description:
- DIODE ZENER 3.6V 500MW MICROMELF
- Quantity:
- Payment:
- Shipping:
Inventory:4,636
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Product details
Overview
BZM55B3V6-TR from Vishay Semiconductors is a precision small-signal Zener diode in MicroMELF (SOD-80) package, designed for voltage regulation and reference applications at 3.6 V nominal Zener voltage with ±0.08 V tolerance, 5 mA test current, and <2 μA reverse leakage at rated voltage. It delivers stable clamping in low-power analog circuits, sensor biasing, and power supply feedback networks.
For engineers reviewing the BZM55B3V6-TR datasheet, BZM55B3V6-TR pinout, BZM55B3V6-TR application, or BZM55B3V6-TR equivalent, key selection criteria include its tight 3.52–3.68 V Zener range, low dynamic resistance (<90 Ω), temperature coefficient of –0.08 %/K at 25 °C, hermetic MicroMELF construction, and suitability for space-constrained, high-stability voltage reference designs.
Technical Context
This device operates as a single-element, silicon planar Zener diode with sharp reverse breakdown and low noise. Its electrical behavior is defined by a 5 mA Zener test current (IZT1), 1 V Zener knee voltage (VZK), and dynamic resistance measured at 1 kHz - all specified under Tamb = 25 °C with junction temperature up to 175 °C.
The BZM55B3V6-TR exhibits a negative temperature coefficient (–0.08 %/K at 25 °C, –0.05 %/K at 125 °C), indicating decreasing Zener voltage with rising temperature - critical for thermal drift compensation in precision references. It is rated for 500 mW total power dissipation with RthJA ≤ 300 K/W on standard epoxy-glass PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.52–3.68 V at IZT = 5 mA - ensures precise 3.6 V regulation with ±2.2% tolerance for stable reference generation |
| Reverse Leakage (IR) | <2 μA at VR = 3.52 V - minimizes quiescent current loss in battery-powered or low-IQ circuits |
| Dynamic Resistance (ZZ) | <90 Ω at IZT = 5 mA, f = 1 kHz - provides low impedance voltage source for improved load regulation |
| Temperature Coefficient (TKVZ) | –0.08 %/K at 25 °C - enables predictable thermal drift modeling in temperature-sensitive references |
| Power Dissipation (Ptot) | 500 mW - supports continuous operation in compact layouts without forced cooling |
| Junction Temperature (Tj) | 175 °C maximum - allows reliable operation in industrial and automotive under-hood environments |
| Package | MicroMELF (SOD-80) - hermetically sealed glass body with 1.8 mm diameter, enabling high reliability and moisture resistance |
Pinout & Package
MicroMELF (SOD-80) package: cylindrical glass body with axial leads; cathode identified by surface band. Total weight ≈12 mg; UL 94 V-0 molding compound; MSL level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to circuit common or lower-potential rail; defines forward voltage drop of 1.5 V at 200 mA |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 3.6 V reference when reverse-biased; marked by band on glass body |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift - essential for automotive and industrial field reliability |
| Very sharp reverse characteristic | Enables clean, low-hysteresis voltage clamping with minimal knee voltage spread (VZK = 1 V) |
| Low reverse current level | <2 μA at 95% VZmin ensures negligible loading on high-impedance reference nodes |
| High stability over time and temperature | Specified TKVZ and tight VZ tolerance support ±0.5% reference accuracy in closed-loop feedback |
| Fits SOD-323 footprint compatibility | MicroMELF geometry allows layout reuse in designs originally targeting surface-mount SOD-323 Zeners |
Applications
| Industrial Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric measurement circuits. Use Value: Tight 3.52–3.68 V range and low tempco (–0.08 %/K) minimize measurement error across –40 to +85 °C operating range. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADCs in portable data loggers powered by coin cells. IC Role / Device Role / Timing Role: Low-current Zener shunt reference replacing higher-power IC references. Use Value: <2 μA leakage at 3.52 V preserves battery life while maintaining 0.2% full-scale accuracy over temperature. |
| SMPS Feedback Divider | Overvoltage Clamp Protection |
Use Scenario: Setting regulated output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener element in secondary-side voltage divider network. Use Value: 500 mW power rating and low ZZ (<90 Ω) ensure stable regulation despite load transients and line variations. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes in industrial HMI panels. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting transient voltage to ≤3.68 V. Use Value: Sharp reverse knee and hermetic construction deliver repeatable clamping performance over >100,000 surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT55B3V6-TR | SOD-123 package (surface-mount plastic), 3.5–3.7 V VZ range, 5 mA IZT, 100 mW Ptot | Lower power rating and plastic encapsulation reduce thermal stability and long-term drift vs. MicroMELF | Select when board space is constrained and cost sensitivity outweighs long-term stability requirements |
| MM3Z3V6T1G | SOD-323 package, 3.42–3.78 V VZ range, 5 mA IZT, 200 mW Ptot, –0.07 %/K TKVZ | Higher VZ tolerance (±5%) and lower power rating limit use in precision references above 70 °C | Choose for high-volume consumer applications where tighter VZ spec is not required and reflow compatibility is prioritized |
Compared with BZM55B3V6-TR, BZT55B3V6-TR offers lower cost and smaller footprint but sacrifices thermal stability and hermetic reliability; MM3Z3V6T1G provides SMT convenience and adequate accuracy for non-critical references but lacks the 500 mW headroom and 175 °C junction rating needed for industrial-grade designs.
Availability
BZM55B3V6-TR is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power ADC reference, SMPS feedback divider, and overvoltage clamp protection requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for BZM55B3V6-TR 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with emphasis on reliability, precision, and high-temperature performance.
The BZM55-Series targets high-stability voltage reference and regulation applications in automotive, industrial, and medical systems where hermetic sealing, tight tolerances, and wide temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of BZM55B3V6-TR?
The BZM55B3V6-TR has a nominal Zener voltage of 3.6 V with a guaranteed range of 3.52 V to 3.68 V at 5 mA test current, corresponding to ±0.08 V absolute tolerance or ±2.2% relative tolerance. This tight specification is achieved through binning and verified per Vishay document 85597 Rev. 2.3.
Is BZM55B3V6-TR suitable for surface-mount assembly?
Yes, BZM55B3V6-TR uses the MicroMELF (SOD-80) package, which is compatible with standard reflow soldering profiles - peak temperature up to 260 °C, MSL level 1, and recommended footprints provided in the datasheet. Its axial geometry requires specialized pick-and-place tooling but is widely supported in industrial SMT lines.
How does the temperature coefficient affect BZM55B3V6-TR performance?
The BZM55B3V6-TR has a temperature coefficient of –0.08 %/K at 25 °C and –0.05 %/K at 125 °C, meaning its Zener voltage decreases by approximately 2.88 mV/°C near room temperature. This must be accounted for in precision references; however, the predictable, linear drift enables effective compensation in analog front-ends.
What is the maximum reverse leakage current for BZM55B3V6-TR?
At VR = 3.52 V (95% of minimum VZ), the BZM55B3V6-TR guarantees reverse leakage current <2 μA at Tj = 25 °C. This ultra-low IR ensures minimal loading on high-impedance nodes and supports micropower operation in battery-backed systems.
Can BZM55B3V6-TR replace BZM55C3V6 in existing designs?
Yes, BZM55B3V6-TR can replace BZM55C3V6 in most applications: both share identical MicroMELF package, 3.6 V nominal VZ, 5 mA IZT, and 500 mW Ptot. However, BZM55B3V6-TR offers tighter VZ tolerance (±0.08 V vs. ±0.16 V) and lower dynamic resistance (<90 Ω vs. <600 Ω), improving regulation accuracy and transient response in BZM55B3V6-TR.
BZM55B3V6-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZM55
- Package/Case:
- 2-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 600 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MicroMELF
BZM55B3V6-TR FAQ
1.How can I place an order for BZM55B3V6-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZM55B3V6-TR 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 BZM55B3V6-TR reliable?
The price and inventory of BZM55B3V6-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZM55B3V6-TR is usually 5 days.
3.What payment methods are accepted for BZM55B3V6-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZM55B3V6-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZM55B3V6-TR?
BZM55B3V6-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZM55B3V6-TR 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 BZM55B3V6-TR?
For technical support, including BZM55B3V6-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZM55B3V6-TR requirements.
6.How does Aetrix verify that BZM55B3V6-TR is sourced from the original manufacturer or authorized distributors?
All BZM55B3V6-TR 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 BZM55B3V6-TR meets industry standards.
7.What is the process for return or replacement of BZM55B3V6-TR?
All BZM55B3V6-TR units undergo pre-shipment inspection (PSI). If there is an issue with BZM55B3V6-TR, 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 BZM55B3V6-TR part is unused and in its original packaging.
Return procedure for BZM55B3V6-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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