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Microchip Technology JANS1N6171AUS/TR
- Part No.:
- JANS1N6171AUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6171AUS/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,233
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Product details
Overview
JANS1N6171AUS/TR from Microsemi is a voidless hermetically sealed, bidirectional Transient Voltage Suppressor (TVS) qualified to MIL-PRF-19500/516 at JANS reliability level. It provides 121.6 V working standoff voltage (VWM), 152.0 V minimum breakdown voltage (V(BR)) at 8 mA, clamps to 218.4 V at 6.9 A peak pulse current (IPP), and delivers 1500 W peak pulse power for 10/1000 µs waveform - deployed in military avionics power rail protection.
For engineers reviewing the JANS1N6171AUS/TR datasheet, JANS1N6171AUS/TR pinout, JANS1N6171AUS/TR application, or JANS1N6171AUS/TR equivalent, key selection criteria include its JANS-level radiation hardness, 175 °C max junction temperature, Category 1 metallurgical bonds, voidless glass package, and IEC61000-4-2/4-4/4-5 compliance for ESD, EFT, and lightning-induced surge immunity.
Technical Context
This TVS operates bidirectionally with no polarity marking and uses hard-glass construction with tungsten slugs and tin/lead-plated copper terminals. Its clamping behavior is defined by a 218.4 V VC at 6.9 A IPP under 10/1000 µs surge, with thermal resistance RθJEC = 5.0 °C/W enabling high-reliability operation up to 175 °C junction temperature.
The device features triple-layer passivation and internal Category 1 metallurgical bonds per MIL-PRF-19500/516, ensuring robustness against mechanical stress, thermal cycling, and radiation effects documented in MicroNote 050. Standby current ID is ≤5 µA at 121.6 V VWM, and temperature coefficient of V(BR) is +0.105 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 121.6 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction. |
| V(BR) min | 152.0 V @ 8 mA - Minimum voltage at which the device enters avalanche breakdown, defining overvoltage trip threshold. |
| VC @ IPP | 218.4 V @ 6.9 A - Clamped voltage during 10/1000 µs surge, limiting downstream circuit stress to safe levels. |
| PPP | 1500 W - Peak transient energy handling capacity for standardized lightning/surge waveforms. |
| TJ range | −55 to +175 °C - Full military temperature range supported without derating loss of surge capability. |
| ID @ VWM | ≤5 µA - Ultra-low leakage ensures minimal power drain on protected lines during normal operation. |
| αV(BR) | +0.105 %/°C - Predictable positive drift enables accurate overvoltage margining across operating temperature. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "C" (SQ-MELF) surface-mount package with tungsten slugs and tin/lead-plated copper terminals; weight ≈1100 mg; dimensions per Microsemi T4-LDS-0278-1 Rev. 2 (Page 7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | No polarity marking - symmetric terminals conduct equally in both directions during overvoltage events. |
| End cap (both ends) | Thermal interface | Direct thermal path to PCB pad; RθJEC = 5.0 °C/W enables efficient heat dissipation during repeated surges. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional TVS architecture | Enables single-device protection of AC-coupled or floating signal/power lines without polarity constraints. |
| Category 1 metallurgical bonds | Guarantees bond integrity under shock, vibration, and thermal cycling per MIL-PRF-19500/516 JANS screening. |
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination risk - critical for long-term reliability in sealed enclosures. |
| Triple-layer passivation | Prevents surface leakage and corrosion in high-humidity or salt-spray environments typical of naval/marine platforms. |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified subsystems without additional shielding. |
Applications
| Avionics Power Distribution | Military Vehicle ECUs |
|---|---|
Use Scenario: Protection of 28 V DC bus inputs in airborne mission computers exposed to load dump and induced lightning transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient energy before it reaches DC-DC converters and FPGA power rails. Use Value: Maintains 121.6 V standoff while clamping to 218.4 V - preserving 15 V input margin for downstream regulators during MIL-STD-461G CS115 pulses. |
Use Scenario: Surge suppression on CAN FD and LIN bus interfaces in tracked vehicle control units operating in electromagnetic-heavy battlefield environments. IC Role / Device Role / Timing Role: Fast-response TVS absorbing EFT bursts (IEC61000-4-4) and ESD events (IEC61000-4-2) on data lines. Use Value: Sub-1 ns response time and 6.9 A IPP rating ensure signal integrity remains intact during 4 kV contact discharge events. |
| Satellite Power Conditioning | Nuclear Facility Instrumentation |
Use Scenario: Input protection for radiation-hardened DC-DC modules in LEO satellite power systems subject to single-event burnout (SEB) and TID exposure. IC Role / Device Role / Timing Role: Primary overvoltage clamp on unregulated solar array inputs feeding battery charge controllers. Use Value: JANS qualification and inherent radiation tolerance eliminate need for redundant TVS arrays - reducing mass and BOM count. |
Use Scenario: Transient suppression on analog sensor inputs (RTDs, strain gauges) in reactor monitoring systems where failure is unacceptable. IC Role / Device Role / Timing Role: High-reliability TVS preventing latch-up or gate oxide rupture in precision ADC front-ends during ground potential shifts. Use Value: 5 µA standby current and −55 to +175 °C operation ensure measurement stability across full plant lifecycle without recalibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANS1N6170AUS/TR | 114.0 V VWM, 142.5 V V(BR) min, 206.3 V VC @ 7.3 A IPP - lower clamping voltage but reduced standoff margin. | Better suited for 24 V systems requiring tighter clamping; less headroom for 28 V nominal bus designs. | Select when system VMAX is ≤125 V and clamping voltage must be minimized below 210 V. |
| JANS1N6172AUS/TR | 136.8 V VWM, 171.0 V V(BR) min, 245.7 V VC @ 6.1 A IPP - higher standoff but elevated clamping voltage. | Appropriate for 48 V industrial buses or legacy 130 V aircraft systems needing extended voltage margin. | Choose when protecting circuits rated >130 V and clamping voltage tolerance exceeds 230 V. |
Compared with JANS1N6171AUS/TR, JANS1N6170AUS/TR offers lower clamping at reduced standoff, while JANS1N6172AUS/TR extends voltage margin at higher VC - enabling precise trade-off between overvoltage headroom and protected circuit stress in JANS-grade designs.
Availability
JANS1N6171AUS/TR is available at Aetrix Electronics and suitable for military avionics, nuclear instrumentation, satellite power systems, and armored vehicle electronics requiring stable component supply under extended lead times and strict traceability.
Supply support for JANS1N6171AUS/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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
JANS1N6171AUS/TR belongs to the 1N6138AUS–1N6173AUS family of MIL-PRF-19500/516-qualified TVS diodes engineered for fail-safe transient suppression in mission-critical defense and space systems.
FAQ
What is the maximum clamping voltage of JANS1N6171AUS/TR under standard test conditions?
The JANS1N6171AUS/TR has a maximum clamping voltage (VC) of 218.4 V when subjected to a 10/1000 µs surge waveform at 6.9 A peak pulse current (IPP), as specified in the Microsemi T4-LDS-0278-1 datasheet. This value defines the upper voltage limit imposed on protected circuitry during transient events and is measured with the device mounted per recommended pad layout and thermal conditions.
Is JANS1N6171AUS/TR compatible with lead-free reflow processes?
JANS1N6171AUS/TR is not RoHS-compliant and uses tin/lead plating per MIL-PRF-19500/516 requirements; its maximum solder temperature rating is 260 °C for 10 seconds. Lead-free reflow profiles exceeding 260 °C or prolonged exposure above 230 °C may compromise hermeticity or metallurgical bond integrity. For RoHS-compliant alternatives, consult Microchip's commercial-grade 1N6171AUS variants.
Does JANS1N6171AUS/TR require polarity-specific PCB layout?
No - JANS1N6171AUS/TR is a bidirectional TVS with no polarity marking and symmetric terminal construction. Its SQ-MELF "C" package allows placement in either orientation on the PCB without affecting electrical performance or clamping behavior. The device conducts identically in both directions once V(BR) is exceeded, making it ideal for AC-coupled or floating-line protection.
How does the JANS qualification level impact the screening of JANS1N6171AUS/TR?
JANS qualification subjects JANS1N6171AUS/TR to the most stringent screening per MIL-PRF-19500/516, including extended burn-in, thermal shock, hermeticity testing, and radiation tolerance verification. Unlike JAN or JANTXV versions, JANS devices undergo lot-by-lot radiation hardness assurance and are certified for use in space and nuclear environments where single-point failures are unacceptable.
What is the thermal resistance path for JANS1N6171AUS/TR, and how does it affect surge duty cycle?
JANS1N6171AUS/TR specifies RθJEC = 5.0 °C/W - junction-to-end-cap thermal resistance - meaning each watt of dissipated surge power raises junction temperature by 5 °C above end-cap temperature. This low thermal resistance supports rapid heat transfer to the PCB, enabling higher impulse repetition rates (df = 0.01 %) and sustained operation at 175 °C junction temperature without degradation of JANS1N6171AUS/TR performance.
JANS1N6171AUS/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- SQ-MELF, C
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 121.6V
- Voltage - Breakdown (Min):
- 152V
- Voltage - Clamping (Max) @ Ipp:
- 218.4V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/516
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- C, SQ-MELF
JANS1N6171AUS/TR FAQ
1.How can I place an order for JANS1N6171AUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6171AUS/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 JANS1N6171AUS/TR reliable?
The price and inventory of JANS1N6171AUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6171AUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6171AUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6171AUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6171AUS/TR?
JANS1N6171AUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6171AUS/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 JANS1N6171AUS/TR?
For technical support, including JANS1N6171AUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6171AUS/TR requirements.
6.How does Aetrix verify that JANS1N6171AUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6171AUS/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 JANS1N6171AUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6171AUS/TR?
All JANS1N6171AUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6171AUS/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 JANS1N6171AUS/TR part is unused and in its original packaging.
Return procedure for JANS1N6171AUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6171AUS/TR Tags
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