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Microchip Technology 1N3070UR
- Part No.:
- 1N3070UR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N3070UR.pdf
- Description:
- DIODE GP 200V 100MA DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,469
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Product details
Overview
1N3070UR from Microsemi is a hermetically sealed, metallurgically bonded switching diode in DO-213AA glass package, rated for 175 V DC reverse voltage, 100 mA operating current, and -65°C to +175°C operation-used in high-reliability military timing, pulse shaping, and signal routing circuits.
For engineers reviewing the 1N3070UR datasheet, 1N3070UR pinout, 1N3070UR application, or 1N3070UR equivalent, key selection factors include its MIL-PRF-19500/169 compliance (JAN/JANTX/JANTXV), 50°C/W junction-to-case thermal resistance, 50 ns max reverse recovery time, and 5 pF max zero-bias capacitance in harsh-environment analog front-ends.
Technical Context
This diode employs double-plug construction and metallurgical bonding to achieve stable switching performance across extreme temperatures. Its hermetic glass package ensures long-term reliability under thermal cycling and humidity exposure per MIL-PRF-19500/169.
Designed for fast transient response, it delivers ≤50 ns reverse recovery time at IF = IR = 30 mA and IRec = 3 mA, with forward voltage ≤1.0 V at 100 mA and ≤1.2 V at -55°C-supporting precision clamping and low-loss signal steering in aerospace avionics interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VRWM) | 175 V - supports isolation in 150 V rail systems with 15% margin |
| Forward Current (IF) | 100 mA at +25°C - defines continuous signal-path current handling |
| Reverse Recovery Time (TRR) | ≤50 ns - enables reliable operation up to ~7 MHz switching frequencies |
| Zero-Bias Capacitance | ≤5 pF - minimizes loading on high-impedance RF or timing nodes |
| Junction-to-Case Thermal Resistance | 50°C/W max - allows direct mounting to heat-spreading chassis without heatsink |
| Operating Temperature Range | -65°C to +175°C - qualified for missile guidance, downhole, and space-grade electronics |
Pinout & Package
Hermetically sealed DO-213AA glass package with axial leads; cathode identified by band at one end. Copper-clad steel leads with tin/lead finish ensure solderability and mechanical robustness in vibration-prone environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to lower-potential node in clamping or rectification path |
| Cathode | Current exit terminal | Banded end; ties to higher-potential reference or output node |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parametric drift over 20+ year field life in sealed modules |
| Metallurgical bonding | Eliminates wirebond fatigue failure modes under shock (>100 g) and thermal cycling |
| Double-plug construction | Enhances mechanical stability of die attach during thermal expansion mismatch |
| MIL-PRF-19500/169 qualification | Guarantees screening, testing, and traceability for JAN, JANTX, and JANTXV grades |
Applications
| Radar Pulse Shaping | Aerospace Power Sequencing |
|---|---|
Use Scenario: Fast edge generation and amplitude limiting in X-band radar modulator stages. IC Role / Device Role / Timing Role: Switching diode used as passive clipper and pulse sharpening element. Use Value: 50 ns TRR and ≤5 pF capacitance preserve sub-10 ns rise times without ringing or overshoot. | Use Scenario: Controlled power-up sequencing of FPGAs and ADCs in satellite payload controllers. IC Role / Device Role / Timing Role: Reverse-biased protection diode across enable rails to prevent backfeed. Use Value: 175 V VRWM and -65°C to +175°C range ensure fail-safe operation during orbital thermal transients. |
| Downhole Telemetry Interface | Military Radio Front-End |
Use Scenario: Signal conditioning and ESD protection in high-temperature oilfield logging tools. IC Role / Device Role / Timing Role: Bidirectional clamping diode in RS-485 receiver input stage. Use Value: Hermetic DO-213AA package withstands 200°C ambient for >1000 hours without parameter shift. | Use Scenario: RF detector and AGC control element in HF/VHF transceiver receive paths. IC Role / Device Role / Timing Role: Low-capacitance switching diode in logarithmic detector topology. Use Value: ≤5 pF capacitance avoids detuning of 30–300 MHz LC tank networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3070UR-1 | Same die, identical DO-213AA package, MIL-PRF-19500/169 compliant | No functional difference; variant suffix denotes screening level only | Select based on required reliability grade (JAN/JANTX/JANTXV) |
| LL3070 | Same electrical specs but in SOD-323 plastic package; no hermetic seal or MIL spec | Limited to commercial-temp, non-mission-critical PCBs with reflow assembly | Use LL3070 only where cost and board space outweigh environmental ruggedness requirements |
Compared with 1N3070UR, the 1N3070UR-1 offers identical performance with graded screening, while LL3070 trades hermeticity and temperature range for surface-mount compatibility-making 1N3070UR the sole choice for extended-life, high-reliability deployments.
Availability
1N3070UR is available at Aetrix Electronics and suitable for radar pulse shaping, aerospace power sequencing, and downhole telemetry requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N3070UR 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 (now part of Microchip Technology) specializes in high-reliability analog and mixed-signal semiconductors for defense, aerospace, and industrial markets.
The 1N3070UR belongs to Microsemi's legacy MIL-qualified discrete diode family, engineered specifically for mission-critical signal integrity and survivability in extreme thermal and mechanical stress environments.
FAQ
What is the maximum reverse recovery time specified for the 1N3070UR?
The 1N3070UR has a maximum reverse recovery time (TRR) of 50 ns, measured at IF = IR = 30 mA and IRec = 3 mA per MIL-PRF-19500/169 test conditions. This value is guaranteed across the full -65°C to +175°C operating range and supports high-speed switching in pulse and RF applications where timing fidelity is critical. The 1N3070UR maintains this specification without derating under standard test ambient conditions.
Is the 1N3070UR suitable for use in space-grade electronics?
Yes, the 1N3070UR is qualified to MIL-PRF-19500/169 and available in JANTXV grade, which includes radiation hardness assurance, burn-in, and lot acceptance testing required for spaceflight applications. Its hermetic DO-213AA package, -65°C to +175°C rating, and metallurgical bonding make the 1N3070UR appropriate for low-earth orbit and deep-space avionics where long-term parametric stability is mandatory.
Does the 1N3070UR have a specified zero-bias junction capacitance?
Yes, the 1N3070UR has a maximum zero-bias junction capacitance of 5 pF at 25°C, as defined in its AC electrical characteristics table. This low capacitance enables minimal signal loading in high-frequency detector, mixer, and timing circuits. The 1N3070UR maintains this value across its full operating temperature range, supporting consistent RF interface behavior without external compensation.
What is the thermal resistance from junction to case for the 1N3070UR?
The 1N3070UR has a maximum junction-to-case thermal resistance (RθJEC) of 50°C/W, measured under standard mounting conditions per MIL-PRF-19500/169. This allows direct conduction cooling via chassis mount or copper pour without additional heatsinking. The 1N3070UR's thermal impedance (ZθJX) is 70°C/W, supporting short-duration surge dissipation in pulsed systems such as radar modulators.
How does the 1N3070UR differ from the LL3070 variant?
The 1N3070UR and LL3070 share identical electrical specifications but differ in packaging and qualification: the 1N3070UR uses a hermetic DO-213AA glass package and meets MIL-PRF-19500/169, while the LL3070 uses a plastic SOD-323 package with commercial screening only. The 1N3070UR supports extended temperature operation and long-term reliability in harsh environments where the LL3070 would not be acceptable.
1N3070UR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 100mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 175 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
- Operating Temperature - Junction:
- -
1N3070UR FAQ
1.How can I place an order for 1N3070UR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3070UR 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 1N3070UR reliable?
The price and inventory of 1N3070UR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3070UR is usually 5 days.
3.What payment methods are accepted for 1N3070UR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3070UR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3070UR?
1N3070UR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3070UR 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 1N3070UR?
For technical support, including 1N3070UR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3070UR requirements.
6.How does Aetrix verify that 1N3070UR is sourced from the original manufacturer or authorized distributors?
All 1N3070UR 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 1N3070UR meets industry standards.
7.What is the process for return or replacement of 1N3070UR?
All 1N3070UR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3070UR, 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 1N3070UR part is unused and in its original packaging.
Return procedure for 1N3070UR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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