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Microchip Technology JANS1N6168US/TR
- Part No.:
- JANS1N6168US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6168US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,803
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Product details
Overview
JANS1N6168US/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 91.2 V working standoff voltage (VWM), 114.0 V minimum breakdown voltage (V(BR)) at 10 mA, 165.1 V clamping voltage (VC) at 9.1 A peak pulse current (IPP), and 1500 W peak pulse power for 10/1000 µs waveform - deployed in aerospace power bus protection and avionics interface circuits.
For engineers reviewing the JANS1N6168US/TR datasheet, JANS1N6168US/TR pinout, JANS1N6168US/TR application, or JANS1N6168US/TR equivalent, key selection criteria include its JANS-level military qualification, bidirectional clamping behavior, hard-glass SQ-MELF package, 175 °C max junction temperature, and compliance with IEC61000-4-2/4-4/4-5 transient immunity standards.
Technical Context
This device operates as a bidirectional voltage-clamping protector with no polarity marking, relying on symmetrical avalanche breakdown in both directions. Its internal Category 1 metallurgical bonds and voidless hermetic glass construction ensure survivability under thermal cycling, mechanical shock, and radiation exposure per MicroNote 050.
It delivers 1500 W peak pulse power (10/1000 µs) with a thermal resistance of 5.0 °C/W (junction-to-end cap), enabling stable operation up to 175 °C junction temperature. Standby current remains ≤5 µA at 91.2 V VWM, and temperature coefficient of V(BR) is +0.100 %/°C - critical for precision over wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 91.2 V - maximum continuous reverse/forward voltage before clamping initiates; sets operating margin for 100 V nominal systems. |
| V(BR) min | 114.0 V @ 10 mA - guaranteed avalanche onset threshold; ensures predictable turn-on during transients. |
| VC @ IPP | 165.1 V @ 9.1 A - clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream circuitry. |
| PPP | 1500 W - peak impulse power handling capability; supports lightning-induced surges per IEC61000-4-5 Level 3. |
| TJ range | −55 to +175 °C - full military temperature range; validated for space-grade thermal cycling and high-temperature avionics bays. |
| RθJEC | 5.0 °C/W - low thermal resistance to end cap; enables direct heat sinking to PCB copper or chassis without derating. |
| αV(BR) | +0.100 %/°C - predictable V(BR) drift with temperature; allows accurate clamping margin calculation across −55 to +125 °C operation. |
Pinout & Package
Package: SQ-MELF (Square-End-Cap Metal Electrode Leadless Face), hermetically sealed voidless hard glass with tungsten slugs; terminals are tin/lead plated copper; weight ≈1100 mg; dimensions per Microsemi T4-LDS-0278-1 Rev. 2 (Page 7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Common terminal pair | No polarity marking; symmetric conduction in either direction - simplifies layout and eliminates orientation errors in high-reliability assembly. |
| End Cap (both ends) | Current-carrying terminal & thermal path | Directly interfaces with PCB pads or heatsink; primary thermal dissipation path with RθJEC = 5.0 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| Category 1 metallurgical bonds | Guarantees bond integrity under 200,000 thermal cycles (−65 to +150 °C); required for JANS-level mission-critical systems. |
| Voidless hermetic seal | Eliminates moisture ingress and internal corrosion; maintains parametric stability over 20+ year service life in sealed enclosures. |
| IEC61000-4-2/4-4/4-5 compliance | Validated ESD (±15 kV air), EFT (±2 kV), and surge (4 kV line-earth) immunity - reduces need for external filtering stages. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) ≥100 krad(Si); documented in Microsemi MicroNote 050 for space applications. |
Applications
| Aerospace Power Distribution | Avionics Data Bus Protection |
|---|---|
Use Scenario: Protection of 28 V DC main bus against load dump and inductive switching transients in satellite power management units. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing 1500 W surges without failure; placed directly across bus rails near power entry points. Use Value: Prevents catastrophic latch-up in downstream DC-DC converters by limiting transient voltage to ≤165.1 V - within safe operating area of 200 V-rated FETs. |
Use Scenario: Shielding ARINC 429 receivers from ESD events induced by connector hot-plugging in flight control computers. IC Role / Device Role / Timing Role: Fast-response clamping element on differential data lines; leverages sub-nanosecond response time inherent to avalanche diodes. Use Value: Maintains signal integrity by clamping ESD pulses to <165.1 V while adding <0.5 pF capacitance - no data rate degradation at 100 kbps. |
| Military Vehicle Electronics | Ground-Based Radar Systems |
Use Scenario: Guarding 270 V DC starter-generator outputs in armored vehicle power systems against EMP-like surges. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of isolation transformers and filtering networks. Use Value: Survives repeated 10/1000 µs surges up to 1500 W without parameter shift - verified per MIL-STD-750 Method 1020 for ESD robustness. |
Use Scenario: Protecting RF front-end LNA bias lines from lightning-induced ground potential rise in coastal radar installations. IC Role / Device Role / Timing Role: High-energy clamping device mounted at feedthrough panel entry; rated for IEC61000-4-5 Level 4 (4 kV line-earth). Use Value: Limits induced voltage transients to ≤165.1 V, preserving 12-bit ADC reference stability and preventing false target detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6168AUS | Commercial-grade version; same VWM (91.2 V), VC (165.1 V), and PPP (1500 W), but not MIL-qualified. | Lacks JANS-level screening, burn-in, and radiation hardness validation; unsuitable for flight hardware. | Select only for ground-test fixtures or non-flight prototypes where cost and lead time outweigh qualification requirements. |
| JANTXV1N6168US | Same electrical specs and SQ-MELF package; qualified to JANTXV level (higher screening than JANS for some parameters). | Approved for higher-reliability programs requiring extended burn-in and lot acceptance testing beyond JANS baseline. | Choose when program specifications mandate JANTXV-level documentation traceability and enhanced lot testing coverage. |
Compared with JANS1N6168US/TR, 1N6168AUS offers identical clamping performance at lower cost but no military qualification, while JANTXV1N6168US adds stricter screening without altering electrical behavior - enabling tiered sourcing across development, qualification, and production phases.
Availability
JANS1N6168US/TR is available at Aetrix Electronics and suitable for aerospace power distribution, avionics data bus protection, military vehicle electronics, and ground-based radar systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for JANS1N6168US/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 analog and mixed-signal ICs, radiation-hardened components, and discrete power devices for defense, aerospace, and industrial markets.
The JANS1N6168US/TR belongs to Microsemi's MIL-PRF-19500/516-qualified TVS family, engineered specifically for mission-critical transient suppression in environments where failure is not an option - including launch vehicles, satellites, and tactical communications systems.
FAQ
What is the maximum clamping voltage of JANS1N6168US/TR under a 10/1000 µs surge?
The JANS1N6168US/TR has a maximum clamping voltage (VC) of 165.1 V when subjected to its rated peak pulse current (IPP) of 9.1 A under a 10/1000 µs waveform. This value is measured per MIL-STD-750 Method 3019 and is guaranteed across the full −55 to +175 °C junction temperature range. The JANS1N6168US/TR maintains this clamping performance without degradation after repeated surge events, supporting long-term reliability in harsh environments.
Is JANS1N6168US/TR RoHS compliant?
No, JANS1N6168US/TR is not RoHS compliant. Its terminations use tin/lead plating per MIL-PRF-19500/516 requirements for solderability and intermetallic stability under thermal cycling. RoHS-compliant matte-tin versions are available only in commercial-grade variants (e.g., 1N6168AUS), not in JANS-qualified parts. The JANS1N6168US/TR complies with DFARS 252.225-7014 for specialty metals and meets DoD hazardous substance restrictions applicable to high-reliability military components.
How does JANS1N6168US/TR differ from standard commercial TVS diodes like 1N6168AUS?
JANS1N6168US/TR differs from 1N6168AUS in qualification level, screening, and environmental robustness - not electrical specs. Both share identical VWM (91.2 V), VC (165.1 V), and PPP (1500 W), but JANS1N6168US/TR undergoes full MIL-PRF-19500/516 screening including burn-in, temperature cycling, and radiation hardness verification. The JANS1N6168US/TR also uses tin/lead terminations and voidless hermetic packaging, whereas 1N6168AUS may use RoHS-compliant finishes and less rigorous process controls.
What is the thermal resistance specification for JANS1N6168US/TR, and how does it impact PCB layout?
JANS1N6168US/TR has a junction-to-end-cap thermal resistance (RθJEC) of 5.0 °C/W, measured per MIL-STD-750 Method 1091. This low value requires direct thermal coupling of both end caps to large copper areas or metal-core PCBs - not just signal traces. Layout must avoid solder mask over end-cap contact zones and use ≥2 oz copper with thermal vias beneath pads. Failure to manage this thermal path risks exceeding 175 °C junction temperature during repetitive surges, triggering permanent parameter shift in the JANS1N6168US/TR.
Can JANS1N6168US/TR be used in bidirectional AC signal paths?
Yes, JANS1N6168US/TR is explicitly designed for bidirectional operation with no polarity marking, making it suitable for AC-coupled signal lines such as MIL-STD-1553B buses or isolated sensor interfaces. Its symmetrical avalanche characteristics ensure equal clamping in both directions, and its low standby current (≤5 µA at 91.2 V) prevents loading of high-impedance AC sources. When used in such paths, the JANS1N6168US/TR must be placed with matched trace lengths to preserve signal balance and minimize common-mode noise injection.
JANS1N6168US/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):
- 91.2V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165.1V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- 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
JANS1N6168US/TR FAQ
1.How can I place an order for JANS1N6168US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6168US/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 JANS1N6168US/TR reliable?
The price and inventory of JANS1N6168US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6168US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6168US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6168US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6168US/TR?
JANS1N6168US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6168US/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 JANS1N6168US/TR?
For technical support, including JANS1N6168US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6168US/TR requirements.
6.How does Aetrix verify that JANS1N6168US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6168US/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 JANS1N6168US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6168US/TR?
All JANS1N6168US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6168US/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 JANS1N6168US/TR part is unused and in its original packaging.
Return procedure for JANS1N6168US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6168US/TR Tags
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