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Microchip Technology 1N5665A/TR
- Part No.:
- 1N5665A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
1N5665A/TR.pdf
- Description:
- TVS DIODE 171VWM 274VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:5,741
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Product details
Overview
1N5665A/TR from Microchip Technology is a unidirectional transient voltage suppressor (TVS) diode in a hermetically sealed DO-13 metal package, designed for high-reliability surge protection in aerospace and industrial systems. It features a 162 V rated standoff voltage (VWM), 287 V maximum clamping voltage (VC) at 5.2 A peak pulse current (IPP), and 1500 W peak pulse power rating at 10/1000 µs waveform.
For engineers reviewing the 1N5665A/TR datasheet, 1N5665A/TR pinout, 1N5665A/TR application, or 1N5665A/TR equivalent, this device is selected for secondary lightning protection per IEC61000-4-5 (42 Ω source), ESD/EFT immunity per IEC61000-4-2/-4, and inductive switching transient suppression in avionics power rails and military-grade control interfaces.
Technical Context
This TVS operates as a unidirectional avalanche clamp with cathode-to-case polarity, leveraging silicon junction breakdown to divert transients before downstream circuitry sustains damage. Its <100 ps response time ensures effective suppression of ESD events and fast-rising inductive spikes without reliance on external triggering or timing circuits.
The device is rated for operation from –55°C to +175°C and exhibits a temperature coefficient of breakdown voltage (αVBR) of 0.108 %/°C. Its thermal resistance is 50°C/W junction-to-lead (at 10 mm lead length), enabling robust power handling under pulsed conditions while maintaining low standby leakage (≤5 µA at VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 162 V - Standoff voltage ensuring non-conduction during normal 162 V DC or peak operating conditions |
| VBR @ IBR | 180–220 V @ 1 mA - Confirmed breakdown threshold range for reliable avalanche initiation |
| VC @ IPP | 287 V @ 5.2 A - Maximum clamped voltage seen across terminals during full-rated 1500 W transient |
| PPP | 1500 W - Peak pulse power capability at 10/1000 µs waveform, defining surge energy absorption limit |
| IPP | 5.2 A - Peak current sustained during standardized 10/1000 µs surge, directly tied to VC and PPP |
| TJ Range | –55°C to +175°C - Full military-grade operating and storage temperature envelope |
| Package | DO-13 (DO-202AA) - Hermetic metal-glass case with cathode-connected case and tin-lead plating |
Pinout & Package
Hermetically sealed DO-13 (DO-202AA) metal-glass package with axial leads; cathode terminal electrically connected to case and marked by diode symbol on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point during reverse-biased surge | Connected to protected line; carries full IPP during clamping event |
| Cathode (Lead 1 / Case) | Reference and return path | Internally bonded to metal case; must be connected to system ground or low-impedance return |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Enables precise placement on positive-rail lines without bidirectional leakage concerns |
| 1500 W peak pulse power (10/1000 µs) | Supports Class 1–4 secondary lightning protection per IEC61000-4-5 with 42 Ω, 12 Ω, or 2 Ω source impedances |
| <100 ps response time | Guarantees suppression of ESD events (IEC61000-4-2) and EFT bursts (IEC61000-4-4) before IC latch-up or damage |
| Hermetic DO-13 metal package | Provides radiation hardness per MicroNote 050 and long-term reliability in high-humidity, high-vibration environments |
| MIL-PRF-19500/500 qualified "A" suffix | Ensures tighter parametric tolerances and screening for JANTXV-level military applications |
Applications
| Aerospace Power Distribution | Military Vehicle Control Systems |
|---|---|
Use Scenario: Protection of 28 V DC bus inputs in airborne flight control computers against induced RF and secondary lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to shunt transients before reaching DC-DC converters. Use Value: Clamps to ≤287 V within 100 ps, limiting stress on downstream 36 V-rated input stages while surviving repeated 1500 W pulses. |
Use Scenario: Surge protection on CAN bus termination resistors and sensor supply lines in tracked vehicle engine control units exposed to ignition noise. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V sensor rails, absorbing 8.3 ms inductive kickback from solenoid drivers. Use Value: Withstands 200 A forward surge (8.3 ms half-sine) and maintains ≤5 µA leakage at 162 V, preserving signal integrity in analog sensor paths. |
| Industrial Programmable Logic Controllers | Avionics Data Acquisition Units |
Use Scenario: Input protection for 24 V digital I/O modules subjected to relay contact bounce and field-wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input channels, coordinated with series impedance for IEC61000-4-5 compliance. Use Value: Delivers Class 3 secondary lightning protection (42 Ω source) with verified 128 A peak pulse current capability per test standard. |
Use Scenario: Protection of ARINC 429 receiver inputs against ESD events during maintenance and EMI coupling from adjacent RF transmitters. IC Role / Device Role / Timing Role: Fast-response TVS placed directly at connector interface to prevent gate oxide damage in line-receiver ICs. Use Value: Sub-100 ps turn-on ensures clamping occurs before 15 kV ESD pulse (IEC61000-4-2) reaches sensitive CMOS inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5665A (bulk) | Identical electrical specs and DO-13 package; differs only in packaging format (bulk vs. tape-and-reel) | No functional difference; TR suffix indicates EIA-296 tape-and-reel delivery for automated assembly | Select 1N5665A/TR when SMT placement or high-volume reel-fed production is required |
| SMCJ160A | Surface-mount SMC package; 160 V VWM, 259 V VC @ 5.8 A; same 1500 W rating but lower thermal resistance (junction-to-ambient) | Better suited for PCB space-constrained designs; lacks hermetic seal and radiation hardness | Choose SMCJ160A only for commercial-grade, non-military applications where DO-13 footprint is unacceptable |
Compared with 1N5665A/TR, the bulk 1N5665A offers identical performance with manual handling advantages, while SMCJ160A trades hermetic reliability and military qualification for surface-mount compatibility-making the TR variant optimal for high-reliability through-hole production requiring traceable reel logistics.
Availability
1N5665A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, military vehicle control systems, and industrial programmable logic controllers requiring stable component supply with full MIL-PRF-19500/500 traceability.
Supply support for 1N5665A/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
Microchip Technology (formerly Microsemi) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5665A/TR belongs to Microchip's legacy JAN/JANTXV-qualified TVS diode family, engineered specifically for mission-critical transient suppression in environments demanding hermetic sealing, wide temperature operation, and IEC61000-4-x compliance.
FAQ
What is the standoff voltage (VWM) specification for the 1N5665A/TR?
The 1N5665A/TR has a rated standoff voltage (VWM) of 162 V, meaning it remains non-conductive up to this DC or continuous peak operating voltage. This value is selected to exceed typical 28 V or 12 V system rails with margin, ensuring no leakage or conduction during normal operation while enabling rapid avalanche response during transients.
How does the 1N5665A/TR achieve compliance with IEC61000-4-5 for secondary lightning protection?
The 1N5665A/TR meets IEC61000-4-5 Class 1–4 secondary lightning requirements when used with appropriate series impedance, due to its 1500 W peak pulse power rating and verified clamping performance at 10/1000 µs waveforms. Its 287 V clamping voltage at 5.2 A ensures protected circuits see limited overvoltage even under 42 Ω, 12 Ω, or 2 Ω source impedances defined in the standard.
Is the 1N5665A/TR suitable for ESD protection per IEC61000-4-2?
Yes-the 1N5665A/TR clamps transients in less than 100 ps, making it effective for IEC61000-4-2 ESD protection. Its low leakage (≤5 µA at 162 V VWM) and fast response prevent damage to sensitive inputs such as ARINC 429 receivers or analog sensor front-ends, provided layout minimizes parasitic inductance between the device and protected node.
What is the significance of the "TR" suffix in 1N5665A/TR?
"TR" denotes tape-and-reel packaging per EIA-296 standards, enabling automated pick-and-place assembly. The 1N5665A/TR retains identical electrical and mechanical specifications as the bulk 1N5665A, including DO-13 hermetic construction, 162 V VWM, and MIL-PRF-19500/500 qualification-only the delivery format differs.
Does the 1N5665A/TR have radiation hardness certification?
Yes-the 1N5665A/TR is inherently radiation hard per Microsemi MicroNote 050, a documented characteristic of its DO-13 hermetic metal-glass construction and silicon process. This makes it suitable for avionics and space-qualified subsystems where total ionizing dose (TID) and single-event effects (SEE) resilience are required.
1N5665A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-13
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 274V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-13
1N5665A/TR FAQ
1.How can I place an order for 1N5665A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5665A/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 1N5665A/TR reliable?
The price and inventory of 1N5665A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5665A/TR is usually 5 days.
3.What payment methods are accepted for 1N5665A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5665A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5665A/TR?
1N5665A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5665A/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 1N5665A/TR?
For technical support, including 1N5665A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5665A/TR requirements.
6.How does Aetrix verify that 1N5665A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5665A/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 1N5665A/TR meets industry standards.
7.What is the process for return or replacement of 1N5665A/TR?
All 1N5665A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5665A/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 1N5665A/TR part is unused and in its original packaging.
Return procedure for 1N5665A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5665A/TR Tags
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