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Microchip Technology 1N3611E3/TR
- Part No.:
- 1N3611E3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- A, Axial
- Datasheet:
-
1N3611E3/TR.pdf
- Description:
- DIODE GEN PURP 200V 1A A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
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Product details
Overview
1N3611E3/TR from Microsemi is a military-qualified standard recovery axial-lead glass rectifier diode rated for 200 V working peak reverse voltage, 1.0 A average forward current at 100°C, and 30 A non-repetitive surge current; it features voidless hermetic glass sealing with Category I metallurgical bond and is used in high-reliability power conversion circuits such as MIL-STD-461-compliant avionics power supplies.
For engineers reviewing the 1N3611E3/TR datasheet, 1N3611E3/TR pinout, 1N3611E3/TR application, or 1N3611E3/TR equivalent, key selection criteria include its 200 V VRWM rating, 1.1 V forward voltage at 1 A, 300 µA maximum reverse leakage at VRWM, -65°C to +175°C operating temperature range, and compliance with MIL-PRF-19500/228 Level JAN.
Technical Context
This diode operates as a unidirectional current-conducting device in AC-to-DC conversion stages, with standard recovery time optimized for line-frequency (50/60 Hz) rectification rather than high-frequency switching. Its internal tungsten slug construction and hard-glass encapsulation provide low thermal resistance (38°C/W) and robust avalanche capability under transient overvoltage conditions.
The 1N3611E3/TR uses axial copper leads with Sn/Pb finish and cathode band polarity marking, conforming to JEDEC TO-204AA (A package) mechanical dimensions. It is not rated for fast or ultrafast recovery and must be derated linearly above 100°C ambient per 13.3 mA/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 200 V - Maximum continuous reverse voltage before breakdown in normal operation |
| IO @ 100°C | 1.0 A - Sustained DC output current capability with heatsinking at 100°C ambient |
| VF @ 1 A | 1.1 V - Forward conduction loss impacting efficiency and thermal rise in rectifier bridges |
| IR @ VRWM | 300 µA - Reverse leakage limiting off-state power dissipation in high-impedance circuits |
| IFSM | 30 A - Surge withstand capacity for inrush or fault currents without permanent damage |
| Junction Temp | -65°C to +175°C - Enables operation in extreme environments including aerospace and downhole systems |
Pinout & Package
Package: Hermetically sealed voidless hard-glass axial-leaded "A" package (JEDEC TO-204AA), with tungsten slugs, Sn/Pb-plated copper leads, and cathode band marking. Weight ≈ 500 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; requires mechanical strain relief at lead exit |
| Cathode | Forward current exit point | Marked by painted band; connects to filter capacitor or load return; defines polarity in bridge configurations |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments |
| Category I metallurgical bond | Ensures mechanical integrity and thermal cycling reliability exceeding 1000 cycles between -55°C and +125°C |
| Controlled avalanche capability | Allows safe clamping of inductive kickback up to 1000 W peak reverse power without failure |
| Radiation hardness | Meets total ionizing dose (TID) requirements per MicroNote 050 for space-grade applications |
Applications
| Avionics Power Supply | Military Radar Transmitter |
|---|---|
Use Scenario: Rectifying 400 Hz aircraft generator output into regulated 28 V DC bus. IC Role / Device Role / Timing Role: Standard recovery rectifier in full-wave bridge configuration delivering 1 A continuous output. Use Value: Hermetic sealing prevents performance degradation at altitude; 175°C junction rating supports conduction-cooled chassis mounting. | Use Scenario: High-voltage DC supply charging pulse-forming network capacitors in pulsed radar modulators. IC Role / Device Role / Timing Role: Catch diode handling repetitive 30 A surge pulses during capacitor discharge cycles. Use Value: Controlled avalanche behavior absorbs energy without catastrophic failure; low thermal resistance enables rapid heat dissipation. |
| Downhole Oilfield Instrumentation | Naval Shipboard Power System |
Use Scenario: Converting three-phase AC from turbine-driven alternators into DC for logging tool electronics at 175°C ambient. IC Role / Device Role / Timing Role: Input rectifier in isolated DC-DC converter front-end with MIL-PRF-19500 qualification. Use Value: -65°C to +175°C rating eliminates need for external cooling; radiation hardness ensures data integrity in neutron-rich environments. | Use Scenario: Main rectifier in EMI-filtered 440 VAC shipboard distribution system feeding critical navigation subsystems. IC Role / Device Role / Timing Role: Line-frequency rectifier in redundant power feed architecture requiring zero-failure tolerance. Use Value: MIL-PRF-19500/228 qualification guarantees lot traceability and burn-in screening; voidless glass prevents hermeticity loss during salt fog exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3611US | Same electrical ratings but MELF surface-mount package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole or wire-wrapped prototyping | Select when automated placement and board space reduction are prioritized over manual repairability |
| 1N5614 | Same VRWM (200 V) and IO (1.0 A), but commercial-grade (non-MIL) and epoxy-encapsulated | Lacks hermetic seal, Category I bond, and radiation hardness; not qualified to MIL-PRF-19500 | Select only for cost-sensitive industrial applications where environmental stress is moderate |
Compared with 1N3611E3/TR, the 1N3611US offers identical electrical performance in a compact MELF format but sacrifices mechanical serviceability, while the 1N5614 reduces cost and qualification rigor at the expense of long-term reliability in harsh environments.
Availability
1N3611E3/TR is available at Aetrix Electronics and suitable for avionics power supplies, military radar transmitters, and downhole instrumentation requiring stable component supply across extended product lifecycles and rigorous environmental certification.
Supply support for 1N3611E3/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 (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N3611E3/TR belongs to Microsemi's legacy MIL-qualified rectifier family, engineered specifically for mission-critical power conversion where failure is not an option.
FAQ
What is the maximum working peak reverse voltage for the 1N3611E3/TR?
The 1N3611E3/TR has a working peak reverse voltage (VRWM) of 200 V, meaning it can safely block up to 200 V of reverse polarity voltage across its terminals under specified operating conditions. This rating is validated per MIL-PRF-19500/228 and applies across the full -65°C to +175°C junction temperature range. Exceeding this voltage risks premature breakdown or parametric shift.
Does the 1N3611E3/TR have a hermetic seal, and why does it matter?
Yes, the 1N3611E3/TR uses a voidless hermetically sealed hard-glass package with internal Category I metallurgical bonds. This construction prevents moisture, contaminants, and atmospheric gases from penetrating the die environment-critical for maintaining stable electrical parameters over decades in high-humidity, vacuum, or corrosive settings. Non-hermetic alternatives like epoxy-packaged diodes may degrade under similar conditions.
What is the forward voltage drop of the 1N3611E3/TR at rated current?
The 1N3611E3/TR exhibits a maximum forward voltage (VF) of 1.1 V at 1 A pulsed forward current and 25°C case temperature. At higher temperatures or continuous DC operation, VF decreases slightly due to semiconductor physics, but thermal design must account for power dissipation (P = VF × IO) and resulting junction heating to stay within the 175°C limit.
Is the 1N3611E3/TR suitable for high-frequency switching applications?
No, the 1N3611E3/TR is a standard recovery rectifier optimized for 50/60 Hz and 400 Hz line-frequency applications-not for high-frequency switching. Its recovery time is not specified in the datasheet because it is intentionally slower to minimize switching noise and EMI in legacy power systems. For SMPS or inverters above 20 kHz, fast or ultrafast rectifiers such as the 1N4937 or UF4007 should be selected instead.
How is polarity identified on the 1N3611E3/TR package?
Polarity on the 1N3611E3/TR is marked by a distinct cathode band painted on the glass body near one end. The lead adjacent to the band is the cathode terminal; the opposite lead is the anode. This marking complies with JEDEC standards and is visible under standard visual inspection-no multimeter verification is needed for correct orientation during board assembly or wiring.
1N3611E3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- A, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- A, Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N3611E3/TR FAQ
1.How can I place an order for 1N3611E3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3611E3/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 1N3611E3/TR reliable?
The price and inventory of 1N3611E3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3611E3/TR is usually 5 days.
3.What payment methods are accepted for 1N3611E3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3611E3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3611E3/TR?
1N3611E3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3611E3/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 1N3611E3/TR?
For technical support, including 1N3611E3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3611E3/TR requirements.
6.How does Aetrix verify that 1N3611E3/TR is sourced from the original manufacturer or authorized distributors?
All 1N3611E3/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 1N3611E3/TR meets industry standards.
7.What is the process for return or replacement of 1N3611E3/TR?
All 1N3611E3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3611E3/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 1N3611E3/TR part is unused and in its original packaging.
Return procedure for 1N3611E3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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