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Microchip Technology 1N5920BUR-1/TR
- Part No.:
- 1N5920BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5920BUR-1/TR.pdf
- Description:
- DIODE ZENER 6.2V 1.25W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,624
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Product details
Overview
1N5920BUR-1/TR from Microsemi is a 1.5 W surface-mount Zener diode in DO-213AB (MELF) glass package, rated for 6.2 V ±5% Zener voltage at 60.5 mA test current, with 2.0 Ω dynamic impedance, 5.0 V reverse voltage at 4.0 µA leakage, and maximum Zener current of 241 mA. It serves voltage regulation in high-density power supply rails and precision reference circuits.
For engineers reviewing the 1N5920BUR-1/TR datasheet, 1N5920BUR-1/TR pinout, 1N5920BUR-1/TR application, or 1N5920BUR-1/TR equivalent, key selection criteria include Zener tolerance (±5%), hermetic glass packaging, MIL-PRF-19500 screening availability, low thermal resistance (RθJEC = 40 °C/W), and RoHS-compliant matte tin plating.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with specified knee current (IZK) of 1.0 mA and knee impedance (ZZK) of 200 Ω. Its metallurgically bonded tungsten slug construction ensures stable thermal performance across -65 °C to +175 °C junction temperature range.
The DO-213AB MELF package enables low parasitic capacitance (typ. <10 pF at 1 MHz per family data) and high reliability in aerospace and industrial environments. It is non-ESD-sensitive per MIL-STD-750 Method 1020 and inherently radiation-hardened per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% at IZT = 60.5 mA - defines nominal regulation point with tight tolerance for stable reference generation. |
| Power Dissipation | 1.5 W @ TEC ≤ 115 °C - supports continuous operation in thermally constrained SMT layouts with end-cap heatsinking. |
| Dynamic Impedance (ZZT) | 2.0 Ω - ensures minimal output voltage variation under load transients in feedback or clamp applications. |
| Reverse Leakage (IR) | 4.0 µA @ VR = 5.0 V - guarantees low quiescent current in battery-backed or low-power bias networks. |
| Thermal Resistance | RθJEC = 40 °C/W - enables predictable junction temperature rise when mounted on copper pads, critical for long-term reliability. |
| Forward Voltage | VF = 1.2 V max @ IF = 200 mA - defines conduction loss during forward-bias fault conditions or dual-role circuit use. |
Pinout & Package
DO-213AB (MELF) glass package: hermetically sealed voidless hard glass body with tungsten slugs; cathode indicated by single band; lead-free matte tin plating over copper; weight ≈ 0.05 g; tape-and-reel delivery (12 mm EIA-481-B standard).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; negative terminal in Zener regulation | Connected to lower-potential node during regulation; must be held ≤ (cathode − 6.2 V) to maintain breakdown. |
| Cathode | Negative terminal in forward bias; positive terminal in Zener regulation | Marked with band; connected to higher-potential rail; carries full Zener current during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded internal contacts | Reduces thermal resistance and improves long-term stability under thermal cycling vs. epoxy-bonded alternatives. |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift in humid or high-reliability environments (e.g., avionics, downhole tools). |
| MIL-PRF-19500 screening option | Enables qualification for military/aerospace programs requiring controlled process, lot traceability, and extended environmental testing. |
| Low parasitic capacitance | Typical <10 pF (per family characterization) - preserves signal integrity in RF biasing and fast-switching clamp circuits. |
Applications
| Industrial Power Supply Regulation | Avionics Reference Voltage Generation |
|---|---|
Use Scenario: Stabilizing +5 V or +3.3 V auxiliary rails in programmable logic controllers and motor drives where input ripple exceeds LDO dropout. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing excess current to hold output voltage constant. Use Value: Maintains regulation within ±5% across 1–241 mA load range without external pass transistor or feedback loop. | Use Scenario: Providing precision bias voltage for analog-to-digital converter references and op-amp offset trimming in flight control systems. IC Role / Device Role / Timing Role: Low-drift, radiation-tolerant voltage reference node with hermetic isolation from board-level contaminants. Use Value: Delivers stable 6.2 V reference with <2.0 Ω dynamic impedance, minimizing code errors due to supply noise coupling. |
| Automotive ECU Clamp Protection | Test & Measurement Equipment Calibration |
Use Scenario: Clamping transient overvoltage on sensor input lines (e.g., throttle position, coolant temp) exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-reacting shunt protection element limiting voltage to 6.2 V + VF during surge events. Use Value: Withstands 1.5 W peak dissipation and operates reliably from -65 °C to +175 °C ambient, meeting AEC-Q200 stress requirements. | Use Scenario: Serving as a calibrated voltage standard in portable multimeters and benchtop calibrators requiring traceable, low-drift references. IC Role / Device Role / Timing Role: Primary Zener reference in closed-loop calibration architecture with temperature-compensated feedback. Use Value: ±5% initial tolerance and <0.01%/°C typical TC (inferred from family data) support Class II accuracy without active compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5920B | Bulk version without TR tape-and-reel suffix; identical electrical specs and DO-213AB package. | No automated placement support; requires manual or bulk-feed assembly. | Select 1N5920B only for prototyping or low-volume hand-soldered builds. |
| SMBG5920B | Same Zener voltage and tolerance, but in SMB (DO-214AA) plastic package; RθJA = 100 °C/W (vs. 120 °C/W for 1N5920BUR-1/TR); no MIL-PRF-19500 screening path. | Higher thermal resistance limits power handling in confined spaces; unsuitable for hermetic or radiation-hardened designs. | Choose SMBG5920B for cost-sensitive commercial applications where plastic packaging and lower reliability are acceptable. |
Compared with 1N5920B and SMBG5920B, the 1N5920BUR-1/TR uniquely combines tape-and-reel automation readiness, hermetic glass reliability, and MIL-PRF-19500 qualification capability-making it the only option for high-integrity, volume-manufactured aerospace or defense systems requiring zero moisture permeability and proven radiation hardness.
Availability
1N5920BUR-1/TR is available at Aetrix Electronics and suitable for industrial power supply regulation, avionics reference voltage generation, and automotive ECU clamp protection requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N5920BUR-1/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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The 1N59xxBUR-1 series belongs to Microsemi's precision Zener diode product line, engineered for mission-critical voltage regulation in environments demanding hermetic sealing, MIL-spec screening, and extended temperature operation.
FAQ
What is the Zener voltage tolerance for 1N5920BUR-1/TR?
The 1N5920BUR-1/TR has a Zener voltage tolerance of ±5%, specified at 6.2 V with 60.5 mA test current. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0300-1 datasheet and applies to all units shipped under this part number. The 'B' in the nomenclature explicitly denotes the 5% tolerance grade.
Does 1N5920BUR-1/TR support MIL-PRF-19500 screening?
Yes, 1N5920BUR-1/TR supports MIL-PRF-19500 screening when ordered with appropriate reliability level suffixes (e.g., MQ, MX). The datasheet states screening "is available" and references source control drawing (SCD) compliance. Standard 1N5920BUR-1/TR units are un-screened commercial grade unless explicitly specified.
What is the maximum steady-state power dissipation for 1N5920BUR-1/TR?
The 1N5920BUR-1/TR has a maximum steady-state power dissipation of 1.5 W when the end cap temperature (TEC) is maintained at or below 115 °C. At 25 °C ambient on FR4 with 1 oz Cu, the rating drops to 1.25 W due to higher thermal resistance (RθJA = 120 °C/W). Derating curves are provided in Figure 1 of the datasheet.
Is 1N5920BUR-1/TR RoHS compliant?
Yes, 1N5920BUR-1/TR is RoHS compliant. The 'e3' suffix in alternate nomenclature (e.g., 1N5920BUR-1(e3)) confirms matte tin plating per JEDEC J-STD-609. The datasheet explicitly lists "RoHS compliant versions are available", and the TR tape-and-reel variant meets EU RoHS Directive 2011/65/EU requirements.
What package type does 1N5920BUR-1/TR use?
The 1N5920BUR-1/TR uses the DO-213AB package, also known as MELF (Metal Electrode Leadless Face). It is a cylindrical, hermetically sealed glass package with metallurgically bonded tungsten slugs and cathode band marking. Dimensions are fully specified on page 5 of the T4-LDS-0300-1 datasheet.
1N5920BUR-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N5920BUR-1/TR FAQ
1.How can I place an order for 1N5920BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5920BUR-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 1N5920BUR-1/TR reliable?
The price and inventory of 1N5920BUR-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 1N5920BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5920BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5920BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5920BUR-1/TR?
1N5920BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5920BUR-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 1N5920BUR-1/TR?
For technical support, including 1N5920BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5920BUR-1/TR requirements.
6.How does Aetrix verify that 1N5920BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5920BUR-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 1N5920BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5920BUR-1/TR?
All 1N5920BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5920BUR-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 1N5920BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5920BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5920BUR-1/TR Tags
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