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Microchip Technology 1N5415US/TR
- Part No.:
- 1N5415US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
1N5415US/TR.pdf
- Description:
- UFR,FRR
- Quantity:
- Payment:
- Shipping:
Inventory:97
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Product details
Overview
1N5415US/TR from Microsemi is a military-qualified, voidless-hermetically sealed surface-mount fast recovery glass rectifier diode rated for 3 A average forward current, 50 V working peak reverse voltage, and 150 ns maximum reverse recovery time; it serves as a high-reliability catch diode or bridge rectifier in aerospace power supplies and radiation-hardened DC/DC converters.
For engineers reviewing the 1N5415US/TR datasheet, 1N5415US/TR pinout, 1N5415US/TR application, or 1N5415US/TR equivalent, key selection criteria include its MIL-PRF-19500/411 qualification (JAN/JANTXV), hermetic D-5B SQ-MELF package, controlled avalanche capability, and low thermal resistance of 6.5 °C/W junction-to-end cap.
Technical Context
This device implements a fast recovery rectification function using a Category 1 metallurgical bond within a voidless hard-glass envelope, enabling stable operation from –65 °C to +175 °C with 80 A surge current tolerance at 8.3 ms half-sine waveform.
Its 150 ns trr and 1.5 V max forward voltage at 9 A support efficient switching in medium-frequency (<100 kHz) power conversion stages, while quadruple-layer passivation ensures long-term reliability under thermal cycling and humidity stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IO @ TA = 55 °C | 3 A average rectified forward current - supports continuous 3 A DC output in thermally managed PCB layouts |
| VRWM | 50 V working peak reverse voltage - defines maximum steady-state reverse bias before conduction onset |
| trr | 150 ns reverse recovery time - enables use in 50–100 kHz SMPS without excessive switching loss |
| VF @ 9 A | 1.5 V maximum forward voltage - limits conduction loss to ≤13.5 W at 9 A peak forward current |
| RθJEC | 6.5 °C/W junction-to-end cap thermal resistance - allows direct heat sinking via end caps for high-power pulse operation |
| TJ/TSTG Range | –65 °C to +175 °C operating/storage range - qualified for extended temperature military and space-grade environments |
Pinout & Package
Package: Hermetically sealed voidless hard-glass SQ-MELF "B" package (D-5B), with copper end caps and Sn/Pb finish; cathode indicated by single band; weight 539 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to input/source side in rectifier configuration; requires thermal anchoring to PCB copper pour |
| Cathode | Forward current exit terminal | Marked with band; connects to load/ground side; serves as primary heat path to end-cap mounting surface |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture ingress and delamination risk over 20+ year field life in vacuum or humid environments |
| Category 1 metallurgical bond | Ensures mechanical integrity and thermal stability under shock/vibration up to 100 g and rapid thermal transients |
| Controlled avalanche capability | Withstands repetitive peak reverse power surges without degradation - critical for inductive load snubbing |
| Quadruple-layer passivation | Provides immunity to surface ion migration and leakage growth under high-humidity, high-bias stress conditions |
| MIL-PRF-19500/411 qualification | Validated screening includes burn-in, temperature cycling, and lot acceptance testing per JAN/JANTXV levels |
Applications
| Aerospace Power Supplies | Radiation-Hardened DC/DC Converters |
|---|---|
Use Scenario: Primary-side rectification in isolated 28 V to ±15 V DC/DC modules deployed on satellite bus power systems. IC Role / Device Role / Timing Role: Fast recovery rectifier handling 3 A continuous output with transient surge tolerance up to 80 A. Use Value: Hermetic sealing and radiation hardness prevent parametric drift or catastrophic failure in total ionizing dose (TID) >100 krad environments. |
Use Scenario: Output rectification in point-of-load converters powering FPGA and ASIC subsystems in nuclear instrumentation. IC Role / Device Role / Timing Role: Low-trr (150 ns), low-VF rectifier minimizing switching loss during 50–80 kHz PWM operation. Use Value: Controlled avalanche behavior safely clamps inductive kickback from gate drivers without external TVS devices. |
| Military Vehicle Power Systems | High-Reliability Industrial UPS |
Use Scenario: Half-bridge freewheeling diode in 24 V/48 V diesel-generator-fed auxiliary power units for armored vehicles. IC Role / Device Role / Timing Role: Catch diode conducting reverse recovery current during MOSFET turn-off transitions. Use Value: 6.5 °C/W RθJEC enables direct end-cap thermal coupling to chassis, sustaining 3 A at 100 °C ambient without derating. |
Use Scenario: Input bridge rectifier in online double-conversion UPS systems requiring >10-year field life and zero failure tolerance. IC Role / Device Role / Timing Role: Main AC-to-DC rectifier operating continuously at 3 A with 50 V PIV margin above 36 V RMS line. Use Value: Voidless glass construction prevents latent failure modes common in plastic-packaged diodes under long-term thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5415US (JANTXV) | Same die, higher-screened JANTXV qualification level; identical electrical specs and D-5B package | Required for Class H (space) and Class K (military airborne) programs with full MIL-PRF-19500 traceability | Select when full JAN-level test documentation and lot traceability are mandated by program spec |
| SM5415 (commercial grade) | Non-hermetic SOD-123 package; 150 ns trr and 50 V VRWM retained, but no MIL qualification or radiation hardness | Suitable only for commercial industrial equipment where cost and volume outweigh reliability requirements | Choose only for non-critical applications with ambient <85 °C and no radiation or long-life requirements |
Compared with 1N5415US/TR, the JANTXV variant adds full military screening and traceability without altering performance, while the SM5415 sacrifices hermeticity and qualification for lower cost and smaller footprint - making 1N5415US/TR the sole choice for mission-critical, high-temperature, or radiation-exposed deployments.
Availability
1N5415US/TR is available at Aetrix Electronics and suitable for aerospace power supplies, military vehicle electronics, and radiation-hardened DC/DC converters requiring stable component supply across extended product lifecycles.
Supply support for 1N5415US/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) designs high-reliability analog and mixed-signal semiconductors for defense, aerospace, and industrial markets.
The 1N5415US/TR belongs to Microsemi's military-qualified rectifier family engineered specifically for fail-safe operation in harsh-environment power conversion where hermeticity, radiation tolerance, and long-term parametric stability are mandatory.
FAQ
What is the maximum junction temperature rating for the 1N5415US/TR?
The 1N5415US/TR has a maximum junction temperature of +175 °C and a storage temperature range of –65 °C to +175 °C, verified per MIL-PRF-19500/411 thermal testing protocols. This rating enables operation in engine bay or avionics bay environments where ambient temperatures exceed 100 °C, provided thermal resistance to heatsink or PCB is maintained below 6.5 °C/W.
Is the 1N5415US/TR RoHS compliant?
The 1N5415US/TR is not RoHS compliant; RoHS-compliant versions (marked with "e3") are available only in commercial-grade variants, not in the TR tape-and-reel military-qualified version. The 1N5415US/TR uses Sn/Pb finish on copper end caps and meets legacy military soldering standards requiring leaded termination.
What does "US" signify in the 1N5415US/TR part number?
The "US" suffix in 1N5415US/TR denotes the SQ-MELF (D-5B) surface-mount package variant, distinguishing it from axial-leaded versions like 1N5415. The "TR" indicates tape-and-reel packaging per EIA-481-B standard, optimized for automated SMT placement in high-reliability manufacturing lines.
How does the 1N5415US/TR differ from the 1N5415 axial-leaded diode?
The 1N5415US/TR shares identical electrical specifications (50 V VRWM, 150 ns trr, 3 A IO) with the axial-leaded 1N5415 but differs in package: it uses a hermetically sealed D-5B SQ-MELF surface-mount body instead of DO-201AD. This enables automated assembly and superior thermal performance via end-cap conduction, while maintaining MIL-PRF-19500 qualification.
Does the 1N5415US/TR support controlled avalanche operation?
Yes, the 1N5415US/TR is characterized for controlled avalanche with specified peak reverse power capability, allowing safe repetitive energy dissipation during inductive switching events. This eliminates need for external snubbers in flyback or forward converter topologies where the 1N5415US/TR serves as a freewheeling or clamp diode.
1N5415US/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, B
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 9 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- B, SQ-MELF
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N5415US/TR FAQ
1.How can I place an order for 1N5415US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5415US/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 1N5415US/TR reliable?
The price and inventory of 1N5415US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5415US/TR is usually 5 days.
3.What payment methods are accepted for 1N5415US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5415US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5415US/TR?
1N5415US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5415US/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 1N5415US/TR?
For technical support, including 1N5415US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5415US/TR requirements.
6.How does Aetrix verify that 1N5415US/TR is sourced from the original manufacturer or authorized distributors?
All 1N5415US/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 1N5415US/TR meets industry standards.
7.What is the process for return or replacement of 1N5415US/TR?
All 1N5415US/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5415US/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 1N5415US/TR part is unused and in its original packaging.
Return procedure for 1N5415US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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