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Microchip Technology 1N3016BUR-1/TR
- Part No.:
- 1N3016BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N3016BUR-1/TR.pdf
- Description:
- DIODE ZENER 6.8V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:117
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Product details
Overview
1N3016BUR-1 from Microsemi is a hermetically sealed, metallurgically bonded surface-mount Zener diode in DO-213AB (MELF/LL41) package, rated for 1 W power dissipation, 6.8 V nominal Zener voltage at 37 mA test current, with 5% voltage tolerance and 3.5 Ω dynamic impedance. It serves as a precision voltage reference or regulator in high-reliability analog power supply circuits.
For engineers reviewing the 1N3016BUR-1 datasheet, 1N3016BUR-1 pinout, 1N3016BUR-1 application, or 1N3016BUR-1 equivalent, key selection factors include its MIL-PRF-19500/115 qualification (JAN/JANTX/JANTXV), low thermal resistance (50 °C/W), -55 °C to +175 °C operating range, RoHS-compliant option, and MELF package suitability for high-density, low-parasitic layouts.
Technical Context
This device implements a glass-encapsulated, double-plug Zener structure with metallurgically enhanced internal contact design-enabling stable regulation across wide temperature and current ranges while minimizing thermal resistance and leakage. Its breakdown behavior is characterized by a sharp knee (IZK = 0.5 mA) and tightly controlled dynamic impedance (ZZT = 3.5 Ω at IZT = 37 mA).
The 1N3016BUR-1 operates with cathode-band polarity (banded end positive for Zener mode), requires matched coefficient of expansion mounting surfaces (+6 ppm/°C), and supports reflow soldering up to 260 °C for 10 seconds. It is not a transient suppressor but a precision DC voltage reference diode with specified IR ≤ 1.0 mA at VR = 5.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±5% at 37 mA - defines regulated output voltage under nominal bias; enables stable reference in 5–7 V rail monitoring. |
| Power Dissipation (PD) | 1.0 W - maximum continuous DC power at TEC = 125 °C; derates linearly to zero at 175 °C. |
| Dynamic Impedance (ZZT) | 3.5 Ω at IZT = 37 mA - low AC impedance ensures minimal output voltage variation under load transients. |
| Reverse Leakage (IR) | ≤1.0 mA at VR = 5.2 V - guarantees tight regulation margin below breakdown threshold. |
| Junction Temperature Range | -55 °C to +175 °C - supports operation in extended industrial, aerospace, and downhole environments. |
| Thermal Resistance (RθJEC) | 50 °C/W - enables efficient heat transfer from junction to end cap; critical for thermal stability in compact layouts. |
Pinout & Package
DO-213AB (MELF/LL41) hermetically sealed glass package: cylindrical body with axial symmetry, cathode band marking, no leads. Dimensions: BD = 2.39–2.67 mm, BL = 4.80–5.21 mm, ECT = 0.36–0.56 mm. Weight ≈ 0.05 g. Solderable per MIL-STD-750, Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode connection point for reverse-bias Zener operation | Must be held positive relative to anode to enable voltage regulation; polarity reversal causes forward conduction (VF = 1.2 V @ 200 mA). |
| Anode (unbanded end) | Cathode connection point for reverse-bias Zener operation | Reference ground node in shunt regulator topology; carries full load current when regulating. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass double-plug construction | Prevents moisture ingress and long-term parameter drift; essential for >20-year field reliability in sealed systems. |
| Metallurgically bonded internal contact | Reduces interfacial thermal resistance and improves current handling consistency across temperature cycles. |
| MIL-PRF-19500/115 qualification (JAN/JANTX/JANTXV) | Validated screening, testing, and traceability for defense, avionics, and space-grade applications. |
| Low ESD sensitivity & inherent radiation hardness | No special handling required; performance maintained under total ionizing dose (TID) per MicroNote 050. |
| RoHS-compliant matte-tin finish (commercial grade) | Enables lead-free reflow assembly without compromising solder wetting or long-term intermetallic stability. |
Applications
| Industrial Power Supply Monitoring | Aerospace Voltage Reference |
|---|---|
|
Use Scenario: Monitoring 5 V or 6 V DC rails in programmable logic controllers with ±10% input variation and -40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference providing feedback to error amplifier in isolated flyback controller. Use Value: Maintains regulation accuracy within ±5% over full temperature range and lifetime, leveraging low αVZ (0.061 %/°C) and stable ZZT. |
Use Scenario: Providing stable 6.8 V reference for ADC biasing in satellite telemetry subsystems exposed to vacuum and thermal cycling. IC Role / Device Role / Timing Role: Precision DC reference source for analog front-end calibration circuitry. Use Value: Hermetic seal and JAN qualification ensure zero parametric shift after 1000 thermal cycles (-55 °C to +125 °C). |
| Downhole Oilfield Sensor Conditioning | Medical Imaging Power Sequencing |
|
Use Scenario: Regulating bias voltage for piezoresistive pressure sensors operating at 150 °C ambient in oil/gas wellbores. IC Role / Device Role / Timing Role: High-temperature Zener clamp protecting op-amp inputs from overvoltage during startup transients. Use Value: Continuous operation at +175 °C junction temperature enabled by RθJEC = 50 °C/W and glass-seal integrity. |
Use Scenario: Sequencing 6.8 V auxiliary supply before main 12 V rail activation in MRI gradient amplifier control boards. IC Role / Device Role / Timing Role: Voltage threshold detector triggering enable signal via comparator input. Use Value: Sharp Zener knee (IZK = 0.5 mA) ensures clean, repeatable turn-on with <1 µs response to overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3016B-1 (DO-41) | Same electrical specs (6.8 V, 5%, 1 W), but axial-leaded DO-41 package; no MELF geometry or surface-mount capability. | Requires through-hole PCB assembly; unsuitable for high-density or automated SMT lines. | Select only if legacy through-hole compatibility or manual prototyping is required. |
| MMBZ5226BS (SOT-23) | 6.8 V, 5%, 225 mW rating; silicon planar process; higher leakage (IR = 5 µA @ 5.2 V); no military qualification. | Limited to commercial-grade, low-power consumer electronics; cannot replace 1N3016BUR-1 in 1 W or high-reliability use cases. | Use only in cost-sensitive, non-critical applications where power and qualification requirements are relaxed. |
Compared with 1N3016B-1 and MMBZ5226BS, the 1N3016BUR-1 uniquely combines 1 W power handling, DO-213AB surface-mount form factor, MIL-qualified reliability, and hermetic sealing-making it irreplaceable in high-density, high-temperature, or mission-critical analog regulation roles.
Availability
1N3016BUR-1 is available at Aetrix Electronics and suitable for industrial power supply monitoring, aerospace voltage reference, and downhole sensor conditioning requiring stable component supply, long-term obsolescence management, and qualified sourcing.
Supply support for 1N3016BUR-1 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
Microsemi Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-temperature, and MIL-spec components.
The 1N3016BUR-1 belongs to Microsemi's legacy MIL-PRF-19500/115-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment systems where long-term stability and hermetic integrity are mandatory.
FAQ
What is the Zener voltage tolerance and test condition for the 1N3016BUR-1?
The 1N3016BUR-1 has a nominal Zener voltage of 6.8 V with ±5% tolerance, measured at a Zener test current (IZT) of 37 mA and ambient temperature of 25 °C. This tolerance reflects the full allowable deviation across manufacturing lots and ensures predictable regulation in shunt reference designs.
Is the 1N3016BUR-1 suitable for surface-mount assembly using lead-free reflow?
Yes-the 1N3016BUR-1 supports lead-free reflow soldering at peak temperatures up to 260 °C for 10 seconds. Commercial-grade versions feature RoHS-compliant matte-tin terminations and meet MIL-STD-750, Method 2026 for solderability, making it compatible with standard Class 3 SMT processes.
Does the 1N3016BUR-1 have military qualification, and what levels are available?
Yes-the 1N3016BUR-1 is qualified per MIL-PRF-19500/115 at JAN, JANTX, and JANTXV reliability levels. These designations indicate progressively stricter screening, burn-in, and environmental testing, enabling use in defense electronics, avionics, and spaceflight hardware where failure is not acceptable.
How does the thermal resistance of the 1N3016BUR-1 affect its power handling in real-world PCB layouts?
The 1N3016BUR-1 has a junction-to-end-cap thermal resistance (RθJEC) of 50 °C/W. In practice, this means that with 1 W dissipated and no additional heatsinking, the junction temperature rises 50 °C above the end-cap temperature. Proper pad layout (A = 7.0 mm, B = 1.8 mm, C = 2.8 mm per datasheet) is essential to maintain thermal path integrity and avoid exceeding the 175 °C max junction limit.
Can the 1N3016BUR-1 be used as a transient voltage suppressor (TVS)?
No-the 1N3016BUR-1 is a precision Zener diode optimized for steady-state voltage regulation, not transient suppression. It lacks the high peak pulse power rating, low clamping ratio, and fast response time required of TVS devices. For surge protection, dedicated TVS diodes such as Microsemi's TransZorb® series should be used instead of the 1N3016BUR-1.
1N3016BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 150 µA @ 5.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N3016BUR-1/TR FAQ
1.How can I place an order for 1N3016BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3016BUR-1/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 1N3016BUR-1/TR reliable?
The price and inventory of 1N3016BUR-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3016BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N3016BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3016BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3016BUR-1/TR?
1N3016BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3016BUR-1/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 1N3016BUR-1/TR?
For technical support, including 1N3016BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3016BUR-1/TR requirements.
6.How does Aetrix verify that 1N3016BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N3016BUR-1/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 1N3016BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N3016BUR-1/TR?
All 1N3016BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3016BUR-1/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 1N3016BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N3016BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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