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Microchip Technology 1N3017BUR-1/TR
- Part No.:
- 1N3017BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N3017BUR-1/TR.pdf
- Description:
- DIODE ZENER 7.5V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,840
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Product details
Overview
1N3017BUR-1/TR from Microsemi is a hermetically sealed, surface-mount MELF (DO-213AB) Zener diode with nominal 7.5 V Zener voltage at 34 mA test current, 1 W power dissipation, 4.0 Ω dynamic impedance at IZT, and ±5% voltage tolerance. It serves as a precision voltage reference or regulator in high-reliability analog power supply rails and overvoltage protection circuits.
For engineers reviewing the 1N3017BUR-1/TR datasheet, 1N3017BUR-1/TR pinout, 1N3017BUR-1/TR application, or 1N3017BUR-1/TR equivalent, key selection criteria include its MIL-PRF-19500/115 qualification level (JAN/JANTX/JANTXV), low 0.5 µA reverse leakage at VR = 5.7 V, metallurgically bonded construction for thermal reliability, and compatibility with reflow soldering per MIL-STD-750 Method 2026.
Technical Context
This device operates in reverse breakdown to maintain stable voltage regulation across load and line variations. Its glass-hermetic DO-213AB package provides low parasitic capacitance and high thermal stability, enabling use in RF bias networks and precision analog references where leakage and drift matter.
The 1N3017BUR-1/TR exhibits a Zener temperature coefficient of +0.065 %/°C and junction-to-end-cap thermal resistance of 50 °C/W - critical for predicting voltage shift under thermal stress and sizing heatsinking in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V at 34 mA - defines regulated output voltage under nominal bias conditions |
| Power Dissipation (PD) | 1.0 W - maximum continuous DC power before thermal derating begins at 125 °C |
| Dynamic Impedance (ZZT) | 4.0 Ω at IZT - determines regulation error under varying load current |
| Reverse Leakage (IR) | 0.5 µA at VR = 5.7 V - ensures minimal quiescent current in standby or low-power modes |
| Temp Coefficient (αVZ) | +0.065 %/°C - quantifies voltage drift per degree Celsius rise in junction temperature |
| Junction Temp Range | –55 °C to +175 °C - supports operation in extended industrial and military environments |
| Forward Voltage (VF) | 1.2 V at 200 mA - relevant for polarity-check or ESD clamp configurations using forward conduction |
Pinout & Package
Package: DO-213AB (MELF, LL41) - cylindrical glass body with axial symmetry, cathode band marking, and tin/lead or RoHS-compliant matte-tin finish on copper-clad steel terminals. Weight ≈ 0.05 g; dimensions: BD = 2.39–2.67 mm, BL = 4.80–5.21 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node during Zener operation; used for forward conduction or ESD clamping |
| Cathode | Banded end | Connected to higher-potential node during Zener regulation; defines polarity for proper biasing |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass seal | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Metallurgically bonded junction | Reduces thermal resistance and improves reliability under thermal cycling |
| MIL-PRF-19500/115 qualification | Validated performance for JAN, JANTX, or JANTXV levels - required for defense/aerospace BOMs |
| Low ESD sensitivity | No special handling required - simplifies manufacturing and field service |
| Radiation hardness | Inherent tolerance to total ionizing dose (TID), per MicroNote 050 - suitable for space-qualified systems |
Applications
| Industrial Power Monitoring | Aerospace Voltage Reference |
|---|---|
Use Scenario: Monitoring 24 V DC bus voltage in programmable logic controller (PLC) backplanes with ±1% accuracy requirement. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference for ADC input scaling and overvoltage comparator threshold. Use Value: 7.5 V regulation with 4.0 Ω ZZT ensures <±0.1 V error across 10–50 mA load variation, meeting IEC 61000-4-5 surge immunity design margins. |
Use Scenario: Providing stable bias for op-amp-based sensor signal conditioning in satellite attitude control electronics. IC Role / Device Role / Timing Role: Precision voltage reference in radiation-hardened analog front-end, operating continuously at –40 °C to +85 °C. Use Value: Hermetic DO-213AB package and +0.065 %/°C αVZ enable <±0.5% total voltage drift over full temp range without calibration. |
| Military Avionics Protection | High-Density Telecom PSU |
Use Scenario: Overvoltage clamp on 12 V aircraft subsystem rail subjected to MIL-STD-704A transients. IC Role / Device Role / Timing Role: Fast-reacting shunt protector triggered by >13.2 V events, diverting surge energy to ground. Use Value: 1 W rating and 0.5 µA IR at 5.7 V allow reliable clamping without false triggering during normal operation. |
Use Scenario: Voltage regulation in compact 48 V to 3.3 V intermediate bus converter for 5G base station RF modules. IC Role / Device Role / Timing Role: Low-parasitic Zener reference for feedback divider network in isolated DC-DC controller. Use Value: MELF geometry minimizes stray capacitance (<0.5 pF), preserving loop stability in >1 MHz switching converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3017B-1 | Same electrical specs but in DO-41 axial-leaded package; no MIL-PRF-19500/115 qualification | Suitable only for commercial PCBs with through-hole assembly; not for surface-mount or high-reliability use | Select when cost-sensitive prototyping or legacy through-hole designs require identical VZ/IZT behavior |
| MMBZ5225B-7-F | 7.5 V SOT-23 Zener; 225 mW rating; 10 µA IR at 5.7 V; RoHS-only; no military qualification | Limited to low-power consumer electronics; insufficient for 1 W surge handling or aerospace thermal range | Choose only for space-constrained commercial boards where 1 W dissipation and –55 °C operation are unnecessary |
Compared with 1N3017B-1 and MMBZ5225B-7-F, the 1N3017BUR-1/TR uniquely combines surface-mount MELF packaging, 1 W power capability, hermetic sealing, and MIL-PRF-19500/115 qualification - making it irreplaceable in mission-critical avionics, defense electronics, and industrial systems requiring guaranteed long-term stability.
Availability
1N3017BUR-1/TR is available at Aetrix Electronics and suitable for industrial power monitoring, aerospace voltage reference, military avionics protection, and high-density telecom PSU applications requiring stable component supply, traceable sourcing, and long lifecycle support.
Supply support for 1N3017BUR-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 military-grade analog and mixed-signal components.
The 1N3017BUR-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for voltage regulation and overvoltage protection in defense, aerospace, and industrial systems demanding extreme environmental resilience.
FAQ
What is the Zener voltage tolerance for 1N3017BUR-1/TR?
The 1N3017BUR-1/TR has a ±5% Zener voltage tolerance, indicated by the "B" in its nomenclature. This means its actual VZ falls between 7.125 V and 7.875 V when measured at 34 mA and 25 °C. The tolerance is verified per MIL-PRF-19500/115 test requirements for JAN/JANTX/JANTXV versions.
Is 1N3017BUR-1/TR compatible with lead-free reflow soldering?
Yes, the 1N3017BUR-1/TR supports lead-free reflow soldering up to 260 °C for 10 seconds, as specified in its maximum ratings table. Its DO-213AB package and matte-tin or tin/lead terminal finishes comply with MIL-STD-750 Method 2026 solderability testing.
Does 1N3017BUR-1/TR have radiation hardness certification?
Yes, the 1N3017BUR-1/TR exhibits inherent radiation hardness due to its hermetic glass construction and metallurgically bonded junction, documented in Microsemi MicroNote 050. It is qualified for total ionizing dose (TID) environments typical of low-earth orbit satellite applications.
What is the maximum reverse leakage current for 1N3017BUR-1/TR?
The maximum reverse leakage current (IR) for 1N3017BUR-1/TR is 0.5 µA at VR = 5.7 V and 25 °C. This low leakage ensures minimal power loss in high-impedance reference circuits and supports accurate voltage sensing in battery-powered systems.
Can 1N3017BUR-1/TR be used in place of 1N3017B-1?
No - while both share identical Zener voltage and test current, the 1N3017BUR-1/TR uses a DO-213AB surface-mount package and meets MIL-PRF-19500/115, whereas 1N3017B-1 is DO-41 axial-leaded and commercially qualified only. Substitution requires PCB redesign and qualification revalidation.
1N3017BUR-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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 4 Ohms
- Current - Reverse Leakage @ Vr:
- 100 µA @ 5.7 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)
1N3017BUR-1/TR FAQ
1.How can I place an order for 1N3017BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3017BUR-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 1N3017BUR-1/TR reliable?
The price and inventory of 1N3017BUR-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 1N3017BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N3017BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3017BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3017BUR-1/TR?
1N3017BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3017BUR-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 1N3017BUR-1/TR?
For technical support, including 1N3017BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3017BUR-1/TR requirements.
6.How does Aetrix verify that 1N3017BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N3017BUR-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 1N3017BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N3017BUR-1/TR?
All 1N3017BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3017BUR-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 1N3017BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N3017BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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