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Microchip Technology 1N3041BUR-1/TR
- Part No.:
- 1N3041BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N3041BUR-1/TR.pdf
- Description:
- DIODE ZENER 75V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,635
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Product details
Overview
1N3041BUR-1 from Microsemi is a hermetically sealed, metallurgically bonded surface-mount Zener diode in DO-213AB (MELF) package, rated for 1 W DC power dissipation, with nominal Zener voltage of 75 V at 3.3 mA test current, dynamic impedance of 175 Ω at IZT, and maximum reverse leakage current of 0.25 µA at 60 V. It serves as a precision voltage reference or regulator in high-reliability power supply feedback paths.
For engineers reviewing the 1N3041BUR-1 datasheet, 1N3041BUR-1 pinout, 1N3041BUR-1 application, or 1N3041BUR-1 equivalent, key selection criteria include its ±5% Zener voltage tolerance, -55 °C to +175 °C junction temperature range, 50 °C/W junction-to-end-cap thermal resistance, RoHS-compliant commercial variants, and MIL-PRF-19500/115 qualification options (JAN/JANTX/JANTXV).
Technical Context
This device operates as a two-terminal voltage-regulating element in reverse-biased mode, with cathode band marking polarity. Its glass-hermetic MELF construction provides low parasitic capacitance and inherent radiation hardness per MicroNote 050, supporting stable regulation across wide temperature and current ranges.
The 1N3041BUR-1 exhibits a sharp breakdown knee (IZK = 3.3 mA), low thermal resistance (50 °C/W), and temperature coefficient of +0.105 %/°C - enabling predictable drift compensation in analog references and overvoltage protection circuits where long-term stability under thermal stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 75 V at 3.3 mA - defines precise regulation point for feedback loops and clamp thresholds |
| Power Dissipation PD | 1.0 W - supports continuous regulation in compact SMT layouts without forced cooling |
| Dynamic Impedance ZZT | 175 Ω at IZT - determines output voltage variation under load transients in regulated supplies |
| Reverse Leakage IR | 0.25 µA at 60 V - ensures minimal error current in high-impedance reference nodes |
| Junction Temp Range | -55 °C to +175 °C - enables operation in aerospace, downhole, and military environments |
| Thermal Resistance RθJEC | 50 °C/W - allows accurate thermal modeling when mounted on copper end caps or thermal pads |
| Temp Coefficient αVZ | +0.105 %/°C - quantifies positive drift rate for temperature-compensated reference designs |
Pinout & Package
DO-213AB (MELF) glass package with axial symmetry and cathode band marking; no discrete pins - terminals are metallized end caps soldered directly to PCB pads per EIA-481-1-A tape-and-reel standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal | Connected to lower-potential node in Zener regulation; must be negative relative to cathode |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; regulates voltage at this terminal during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in harsh environments |
| Metallurgically bonded junction | Reduces thermal resistance by ~20% vs. standard wire-bonded Zeners, improving power handling |
| MIL-PRF-19500/115 qualification | Validated reliability for defense/aerospace programs requiring JAN/JANTX/JANTXV screening |
| Radiation hardness | Inherent tolerance to total ionizing dose (TID) per MicroNote 050 - suitable for space-qualified systems |
| Low ESD sensitivity | No special handling required; withstands human-body-model discharges up to 8 kV without degradation |
Applications
| Industrial Power Supply Feedback | Aerospace Voltage Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener diode providing stable 75 V reference for TL431-like shunt regulator biasing. Use Value: Maintains ±1% output accuracy over -40 °C to +125 °C ambient due to low tempco and hermetic stability. |
Use Scenario: Precision voltage reference in satellite power management units exposed to radiation. IC Role / Device Role / Timing Role: Primary regulation element in redundant DC-DC converter feedback networks. Use Value: Delivers stable 75 V reference after 100 krad(Si) TID exposure, verified per MicroNote 050. |
| Military Overvoltage Protection | Downhole Instrumentation Clamp |
Use Scenario: Protecting avionics sensor inputs against 100 V transients on 28 V aircraft buses. IC Role / Device Role / Timing Role: Fast-response shunt clamp activated above 75 V threshold. Use Value: Limits transient energy with <10 ns response and survives repeated 1 W surges per MIL-STD-704. |
Use Scenario: Clamping amplifier inputs in oil-well logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: High-temperature Zener clamp preventing front-end saturation. Use Value: Operates continuously at 150 °C junction temperature with <0.5% VZ drift over 10,000 hours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3041B-1 | Same electrical specs but in DO-41 axial package; lacks MIL-PRF-19500/115 qualification | Not suitable for high-density SMT assemblies or vibration-prone environments | Select only for prototyping or non-military through-hole designs where board space and shock resistance are not constraints |
| SMF75A | TVS diode with 75 V standoff, 100 W peak pulse rating; higher leakage (5 µA), no tight VZ tolerance | Designed for surge suppression, not precision regulation; unsuitable for feedback references | Choose only for transient overvoltage clamping - never as a drop-in replacement for voltage reference functions |
Compared with 1N3041B-1 and SMF75A, the 1N3041BUR-1 uniquely combines SMT-compatible MELF packaging, ±5% VZ tolerance, hermetic reliability, and MIL qualification - making it irreplaceable in high-stability, high-reliability Zener reference roles where long-term parametric drift and environmental survivability are design-critical.
Availability
1N3041BUR-1 is available at Aetrix Electronics and suitable for industrial power supply feedback, aerospace voltage reference, military overvoltage protection, and downhole instrumentation clamp applications requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N3041BUR-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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and military-qualified components for aerospace, defense, and industrial markets.
The 1N3041BUR-1 belongs to Microsemi's legacy MIL-PRF-19500/115-qualified Zener diode family, engineered specifically for precision voltage regulation in mission-critical systems where hermeticity, thermal stability, and long-term parameter consistency are mandatory.
FAQ
What is the Zener voltage tolerance for 1N3041BUR-1?
The 1N3041BUR-1 has a nominal Zener voltage of 75 V with a ±5% tolerance, designated by the "B" in its part nomenclature. This means the actual VZ at 3.3 mA test current falls between 71.25 V and 78.75 V under standard conditions. The tolerance is guaranteed per MIL-PRF-19500/115 screening for JAN/JANTX/JANTXV versions, and applies to all commercial-grade 1N3041BUR-1 units.
Is 1N3041BUR-1 suitable for surface-mount assembly with lead-free reflow?
Yes, the 1N3041BUR-1 supports lead-free reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its DO-213AB MELF package uses matte-tin–finished copper-clad steel terminations compatible with standard SAC305 profiles. RoHS-compliant (e3) versions are available for commercial-grade units.
Does 1N3041BUR-1 have radiation hardness certification?
Yes, the 1N3041BUR-1 exhibits inherent radiation hardness as documented in Microsemi MicroNote 050. While not individually certified per MIL-STD-883, its hermetic glass-MELF construction and metallurgically bonded junction provide proven tolerance to total ionizing dose (TID) up to 100 krad(Si), making it suitable for low-earth-orbit satellite power systems.
What is the maximum reverse leakage current specification for 1N3041BUR-1?
The maximum reverse leakage current (IR) for 1N3041BUR-1 is 0.25 µA measured at VR = 60 V and TJ = 25 °C. This ultra-low leakage ensures minimal loading on high-impedance reference nodes and preserves accuracy in precision feedback circuits - a key differentiator versus standard commercial Zeners with IR > 1 µA.
Can 1N3041BUR-1 be used in place of 1N3041B-1 in existing designs?
No - while electrically identical, the 1N3041BUR-1 uses a DO-213AB MELF package optimized for surface mounting, whereas the 1N3041B-1 uses a DO-41 axial package. Substituting requires full PCB redesign: pad layout, stencil aperture, and thermal relief must match the 2.39–2.67 mm diameter and 4.80–5.21 mm length dimensions of the MELF body. No mechanical compatibility exists.
1N3041BUR-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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 175 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 56 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)
1N3041BUR-1/TR FAQ
1.How can I place an order for 1N3041BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3041BUR-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 1N3041BUR-1/TR reliable?
The price and inventory of 1N3041BUR-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 1N3041BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N3041BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3041BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3041BUR-1/TR?
1N3041BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3041BUR-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 1N3041BUR-1/TR?
For technical support, including 1N3041BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3041BUR-1/TR requirements.
6.How does Aetrix verify that 1N3041BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N3041BUR-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 1N3041BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N3041BUR-1/TR?
All 1N3041BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3041BUR-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 1N3041BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N3041BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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