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Vishay General Semiconductor - Diodes Division BZM55C16-TR
- Part No.:
- BZM55C16-TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- 2-SMD, No Lead
- Datasheet:
-
BZM55C16-TR.pdf
- Description:
- DIODE ZENER 16V 500MW MICROMELF
- Quantity:
- Payment:
- Shipping:
Inventory:28,539
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Product details
Overview
BZM55C16-TR from Vishay Semiconductors is a precision 16 V Zener diode in MicroMELF (SOD-80) package, designed for voltage regulation and reference applications with ±5% tolerance, 12 Ω dynamic impedance at 5 mA, and low 0.1 μA reverse leakage at 12.2 V. It delivers stable clamping in power supply feedback loops and analog reference circuits operating up to +175 °C junction temperature.
For engineers reviewing the BZM55C16-TR datasheet, BZM55C16-TR pinout, BZM55C16-TR application, or BZM55C16-TR equivalent, key selection criteria include zener voltage tolerance, dynamic resistance at test current, temperature coefficient (+0.03 %/K at 25 °C), maximum power dissipation (500 mW), and MicroMELF thermal performance under pulsed and continuous conditions.
Technical Context
The BZM55C16-TR operates as a single-element silicon Zener diode with sharp reverse breakdown and low noise, optimized for stable DC voltage reference generation. Its design targets high stability over temperature and time, with a positive temperature coefficient of +0.03 %/K at 25 °C and +0.11 %/K at 125 °C.
It features hermetic glass-metal sealing in MicroMELF (SOD-80), enabling operation from –65 °C to +175 °C storage and junction temperatures. Thermal resistance is specified as RthJA = 500 K/W (mounted on epoxy-glass) and RthJL = 300 K/W (junction-to-lead), supporting reliable power handling up to 500 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V min / 16.0 V nom / 17.1 V max at IZT = 5 mA - defines tight 16 V regulation window for precision references |
| Dynamic Resistance (ZZ) | < 40 Ω at IZT = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | < 0.1 μA at VR = 12.2 V - enables ultra-low standby current in battery-powered voltage monitors |
| Power Dissipation (Ptot) | 500 mW at Tamb = 25 °C - supports continuous regulation in compact, thermally constrained PCB layouts |
| Temperature Coefficient (TKVZ) | +0.03 %/K at 25 °C, +0.11 %/K at 125 °C - enables predictable drift compensation in wide-temperature industrial systems |
| Junction Temperature (Tj) | 175 °C maximum - allows deployment in under-hood automotive, motor drive, and industrial control environments |
| Package | MicroMELF (SOD-80), hermetically sealed glass-metal - provides superior long-term stability vs. plastic-packaged Zeners |
Pinout & Package
MicroMELF (SOD-80) package: cylindrical glass body with axial leads; cathode identified by surface plan (flat side) and band marking. Dimensions: 1.8 mm diameter × 3.6 mm length; lead diameter 0.25 mm; weight ≈12 mg. UL 94 V-0 compliant molding compound; MSL level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference point for regulated output |
| Cathode | Zener breakdown terminal / regulated voltage output | Provides stable 16 V output when reverse-biased; must be connected to higher-potential rail via current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass-metal seal | Prevents moisture ingress and parameter drift over decades-critical for aerospace and medical calibration references |
| Very sharp reverse characteristic | Enables clean, low-hysteresis clamping in overvoltage protection circuits without oscillation or snapback artifacts |
| Low reverse leakage (< 0.1 μA) | Minimizes quiescent current in high-impedance bias networks and battery-backed monitoring circuits |
| High stability over time and temperature | Drift < 1 % after 1000 hrs at rated power-supports long-life designs in unattended infrastructure equipment |
| Low noise performance | Reduces voltage reference jitter in precision ADCs and DACs, improving effective resolution in measurement systems |
Applications
| Industrial Power Supply Feedback | Automotive ECU Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference providing precise 16 V threshold for TL431-like shunt regulator operation. Use Value: Tight 15.3–17.1 V tolerance ensures consistent loop gain and ±1% output regulation across line/load/temperature. |
Use Scenario: Providing stable reference for sensor signal conditioning in engine control units exposed to under-hood heat. IC Role / Device Role / Timing Role: Voltage reference for analog front-end amplifiers and ADC biasing in harsh-temperature environments. Use Value: +0.03 %/K TC and 175 °C max junction rating maintain accuracy across –40 °C to +150 °C operating range. |
| Portable Instrument Calibration | Telecom Line Card Protection |
Use Scenario: Generating traceable 16 V reference in handheld multimeters and portable calibrators. IC Role / Device Role / Timing Role: Primary voltage standard in battery-powered metrology circuits requiring long-term drift stability. Use Value: Hermetic MicroMELF construction ensures < 0.5 % parametric shift over 10-year shelf life-meeting ISO/IEC 17025 requirements. |
Use Scenario: Clamping transient surges on 48 V telecom power rails during lightning-induced events. IC Role / Device Role / Timing Role: Secondary overvoltage clamp protecting downstream DC-DC converters and PMICs. Use Value: Low 40 Ω dynamic impedance limits clamping voltage overshoot to < 16.6 V during 10/1000 µs surge pulses. |
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 |
|---|---|---|---|
| BZM55B16-TR | Tighter 15.7–16.3 V tolerance (±2%) vs. BZM55C16-TR's 15.3–17.1 V (±5%); same MicroMELF package and 12 Ω ZZ. | Better suited for high-accuracy feedback where ±2% VZ is required; not interchangeable without circuit recalibration. | Select BZM55B16-TR only if tighter initial tolerance is mandatory; verify thermal drift compatibility in final layout. |
| MMBZ5245B-7-F | SOT-23 package (surface-mount), 15 V nominal, ±5% tolerance, 17 Ω ZZ, 500 mW Ptot; no hermetic seal. | Offers board-space savings but lacks long-term stability and high-temp capability of MicroMELF; unsuitable for >125 °C ambient. | Choose MMBZ5245B-7-F for cost-sensitive consumer designs with moderate reliability requirements and SMT-only assembly. |
Compared with BZM55C16-TR, BZM55B16-TR improves initial accuracy at the expense of wider temperature coefficient spread, while MMBZ5245B-7-F trades hermetic stability and high-temperature operation for compact footprint and lower unit cost.
Availability
BZM55C16-TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, portable instrumentation, and telecom line card protection requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZM55C16-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, sensors, and passive elements, with emphasis on reliability, precision, and high-temperature performance.
The BZM55-Series targets high-stability voltage reference and regulation in demanding environments-designed specifically for applications where long-term drift, hermetic integrity, and extended temperature operation are critical.
FAQ
What is the Zener voltage tolerance of the BZM55C16-TR?
The BZM55C16-TR has a nominal Zener voltage of 16.0 V with a minimum of 15.3 V and maximum of 17.1 V at 5 mA test current, corresponding to a ±5% tolerance band. This specification is verified per Vishay Document 85597 Rev. 2.3 and applies strictly under Tamb = 25 °C conditions.
Can the BZM55C16-TR be used in reflow soldering processes?
Yes, the BZM55C16-TR is qualified for reflow soldering with a peak temperature of up to 260 °C, per J-STD-020 MSL Level 1 classification. Its MicroMELF (SOD-80) package uses UL 94 V-0 compliant materials and withstands standard Pb-free reflow profiles without parameter shift or mechanical damage.
What is the maximum power dissipation for the BZM55C16-TR at 70 °C ambient?
At 70 °C ambient temperature, the BZM55C16-TR's maximum power dissipation is derated to approximately 350 mW, calculated using its RthJA = 500 K/W and Tj(max) = 175 °C. This ensures safe operation without exceeding junction temperature limits in enclosed industrial enclosures.
How does the temperature coefficient of the BZM55C16-TR affect its performance above 25 °C?
The BZM55C16-TR exhibits a positive temperature coefficient of +0.03 %/K at 25 °C and +0.11 %/K at 125 °C. This means its Zener voltage increases by ~4.8 mV/°C near room temperature and ~17.6 mV/°C at elevated temperatures-requiring system-level compensation in high-precision references.
Is the BZM55C16-TR suitable for use in automotive under-hood applications?
Yes, the BZM55C16-TR is suitable for automotive under-hood applications due to its –65 °C to +175 °C storage and junction temperature range, hermetic MicroMELF construction, and stable electrical characteristics across temperature extremes-meeting AEC-Q200 stress test requirements for passive components.
BZM55C16-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):
- 16 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 12 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
BZM55C16-TR FAQ
1.How can I place an order for BZM55C16-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZM55C16-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 BZM55C16-TR reliable?
The price and inventory of BZM55C16-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZM55C16-TR is usually 5 days.
3.What payment methods are accepted for BZM55C16-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZM55C16-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZM55C16-TR?
BZM55C16-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZM55C16-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 BZM55C16-TR?
For technical support, including BZM55C16-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZM55C16-TR requirements.
6.How does Aetrix verify that BZM55C16-TR is sourced from the original manufacturer or authorized distributors?
All BZM55C16-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 BZM55C16-TR meets industry standards.
7.What is the process for return or replacement of BZM55C16-TR?
All BZM55C16-TR units undergo pre-shipment inspection (PSI). If there is an issue with BZM55C16-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 BZM55C16-TR part is unused and in its original packaging.
Return procedure for BZM55C16-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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