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Microchip Technology 1N6028UR/TR
- Part No.:
- 1N6028UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N6028UR/TR.pdf
- Description:
- DIODE ZENER 150V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,746
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Product details
Overview
1N6028UR/TR from Microsemi is a surface-mount 500 mW Zener diode with nominal Zener voltage of 150 V, ±5% tolerance (B suffix), 1 mA maximum reverse leakage at 120 V, 1250 Ω dynamic impedance at 1 mA test current, and DO-213AA (MLL34/SOD80) MELF glass package. It regulates voltage in precision reference and overvoltage protection circuits across industrial power supplies and instrumentation.
For engineers reviewing the 1N6028UR/TR datasheet, 1N6028UR/TR pinout, 1N6028UR/TR application, or 1N6028UR/TR equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (300 °C/W junction-to-ambient), low capacitance (<1 pF typical), radiation-hardened construction, and RoHS-compliant matte-tin plating for commercial-grade reflow compatibility.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with regulation established at IZT = 1 mA. Its Zener impedance (ZZT = 1250 Ω) and temperature coefficient (+0.110 %/°C) are specified at 30 °C lead temperature per JEDEC test conditions.
The DO-213AA hermetically sealed glass package enables stable operation from −65 °C to +175 °C junction temperature, with metallurgical bonding ensuring reliability under thermal cycling and mechanical stress. Reverse leakage remains ≤0.1 µA up to 120 V, supporting high-impedance bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 150 V ±5% at 1 mA - defines precise clamping threshold for overvoltage protection and reference stability. |
| Power Dissipation | 0.5 W at 25 °C ambient - limits continuous power handling without derating on FR4 board. |
| Dynamic Impedance | 1250 Ω at 1 mA - determines output voltage variation under load current changes in regulation circuits. |
| Reverse Leakage | ≤0.1 µA at 120 V - ensures minimal error current in high-impedance voltage divider or reference applications. |
| Junction Temperature Range | −65 °C to +175 °C - supports operation in harsh environments including aerospace and downhole instrumentation. |
| Thermal Resistance | 300 °C/W junction-to-ambient - informs PCB copper area requirements for thermal management at full power. |
| Capacitance | <1 pF typical - preserves high-frequency signal integrity in RF detector or fast transient suppression circuits. |
Pinout & Package
DO-213AA (SOD80 / MLL34) MELF glass package: hermetically sealed cylindrical body with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode indicated by single band; polarity: banded end positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; establishes reference potential for Zener voltage measurement. |
| Cathode (banded end) | Regulated output node | Provides stable 150 V relative to anode when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Radiation-hardened construction | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space and nuclear instrumentation. |
| ESD insensitivity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling and assembly. |
| Low capacitance | <1 pF typical - minimizes loading on high-frequency nodes in RF sampling or pulse detection circuits. |
| Hermetic glass sealing | DO-213AA package prevents moisture ingress and long-term parameter drift - ensures 20+ year stability in sealed enclosures. |
| RoHS-compliant option | Matte-tin plating (e3 suffix) - supports lead-free reflow soldering without compromising solder joint reliability. |
Applications
| Industrial Power Supply Reference | Aerospace Voltage Clamping |
|---|---|
Use Scenario: Precision 150 V reference in isolated DC-DC converter feedback loop for medical imaging power modules. IC Role / Device Role / Timing Role: Two-terminal Zener regulator providing stable voltage setpoint for optocoupler-based error amplification. Use Value: ±5% tolerance and +0.110 %/°C TC enable <±1.5% total error over −40 °C to +85 °C operating range. | Use Scenario: Transient overvoltage clamp on 100 V bus in satellite power distribution unit exposed to space radiation. IC Role / Device Role / Timing Role: Passive crowbar element absorbing ESD and TID-induced transients before they reach downstream regulators. Use Value: Radiation-hardened glass package and 175 °C max junction temperature ensure functional integrity after 100 krad(Si) exposure. |
| Test Equipment Calibration Source | Downhole Instrumentation Bias Network |
Use Scenario: Stable 150 V reference in portable multimeter calibration circuit requiring traceable voltage accuracy. IC Role / Device Role / Timing Role: Primary voltage standard in resistor-divider network feeding 24-bit ADC reference input. Use Value: ≤0.1 µA leakage at 120 V prevents >0.001% gain error in 10 MΩ input impedance front-end. | Use Scenario: High-temperature bias supply for piezoelectric sensor amplifier in oil-well logging tool operating at 150 °C ambient. IC Role / Device Role / Timing Role: Zener-regulated bias rail powering op-amp input stage in extreme-temperature analog front-end. Use Value: −65 °C to +175 °C junction rating and 300 °C/W RθJA allow direct mounting on ceramic substrate with no heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6028AUR/TR | ±10% Zener tolerance (A suffix) vs. ±5% (B suffix); otherwise identical electrical and mechanical specs. | Lower cost for non-critical voltage references where ±10% tolerance is acceptable. | Select 1N6028AUR/TR only when system-level calibration compensates for wider voltage spread. |
| BZX85C150-TAP | DO-41 axial package (not surface-mount); 1.3 W power rating; ±5% tolerance; 150 Ω ZZT at 5 mA. | Suitable for through-hole prototyping or higher-power dissipation needs, but incompatible with SMT production flow. | Choose BZX85C150-TAP only for manual assembly or legacy board rework where footprint change is acceptable. |
Compared with 1N6028UR/TR, 1N6028AUR/TR trades tighter voltage control for lower cost, while BZX85C150-TAP offers higher power and lower impedance but requires axial-leaded layout and sacrifices SMT manufacturability.
Availability
1N6028UR/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace voltage clamping, test equipment calibration sources, and downhole instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for 1N6028UR/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
Microsemi Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N5985BUR–1N6031BUR series delivers precision Zener regulation in hermetic MELF packages, targeting applications demanding radiation hardness, wide temperature operation, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance for 1N6028UR/TR?
The 1N6028UR/TR has a nominal Zener voltage of 150 V with ±5% tolerance, indicated by the "B" suffix in its part number per Microsemi's nomenclature. This means the actual measured VZ at 1 mA test current falls between 142.5 V and 157.5 V under standard test conditions. The 1N6028UR/TR datasheet confirms this tolerance is guaranteed across the full operating temperature range.
Is 1N6028UR/TR RoHS compliant?
Yes, the 1N6028UR/TR is RoHS compliant, as confirmed by the "e3" designation in its full manufacturer marking and specification sheet. It uses matte-tin end-cap plating and meets EU Directive 2011/65/EU requirements. RoHS compliance applies only to commercial-grade versions; military-screened variants use tin-lead plating and are not RoHS compliant.
What is the maximum reverse leakage current for 1N6028UR/TR?
The maximum reverse leakage current for 1N6028UR/TR is 0.1 µA at 120 V, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0228-1 datasheet. This value is measured at 30 °C lead temperature and reflects worst-case leakage well below the breakdown region, critical for high-impedance bias networks.
Can 1N6028UR/TR be used in high-temperature environments?
Yes, the 1N6028UR/TR supports junction temperatures from −65 °C to +175 °C and is qualified for operation in high-temperature environments such as downhole oil-well tools or engine-mounted electronics. Its DO-213AA glass package and metallurgical bonds maintain parameter stability at elevated temperatures, with derating applied above 25 °C ambient per Figure 1.
What does the "TR" suffix mean in 1N6028UR/TR?
The "TR" suffix in 1N6028UR/TR indicates tape-and-reel packaging per EIA-481-B standard using 12 mm carrier tape, enabling automated SMT placement. This format is standard for volume production and differs from bulk or ammo-pack options. The "TR" does not affect electrical specifications or reliability screening level.
1N6028UR/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 150 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N6028UR/TR FAQ
1.How can I place an order for 1N6028UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6028UR/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 1N6028UR/TR reliable?
The price and inventory of 1N6028UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6028UR/TR is usually 5 days.
3.What payment methods are accepted for 1N6028UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6028UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6028UR/TR?
1N6028UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6028UR/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 1N6028UR/TR?
For technical support, including 1N6028UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6028UR/TR requirements.
6.How does Aetrix verify that 1N6028UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N6028UR/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 1N6028UR/TR meets industry standards.
7.What is the process for return or replacement of 1N6028UR/TR?
All 1N6028UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N6028UR/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 1N6028UR/TR part is unused and in its original packaging.
Return procedure for 1N6028UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6028UR/TR Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAZ12-13-F
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