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Microchip Technology JANS1N6146AUS/TR
- Part No.:
- JANS1N6146AUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6146AUS/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
JANS1N6146AUS/TR from Microsemi is a military-qualified, voidless hermetically sealed bidirectional Transient Voltage Suppressor (TVS) in SQ-MELF package, rated for 1500 W peak pulse power (10/1000 µs), 11.4 V working standoff voltage (VWM), and 21.0 V clamping voltage (VC) at 71.4 A peak pulse current. It operates from −55 °C to +175 °C and is used in high-reliability aerospace power rail protection.
For engineers reviewing the JANS1N6146AUS/TR datasheet, JANS1N6146AUS/TR pinout, JANS1N6146AUS/TR application, or JANS1N6146AUS/TR equivalent, key selection criteria include its MIL-PRF-19500/516 JANS qualification, bidirectional surge suppression capability, glass-body thermal resistance (5.0 °C/W), and compatibility with automated SMT placement via square-end-cap terminals.
Technical Context
This device implements a silicon avalanche diode structure optimized for fast transient response (<1 ps typical turn-on) and robust energy absorption under repetitive 10/1000 µs surges. Its hard-glass hermetic seal and Category 1 metallurgical bonds ensure stable VBR (14.25 V min @ 75 mA) and low temperature coefficient (0.08 %/°C) across extended military temperature ranges.
Designed for bidirectional operation, JANS1N6146AUS/TR suppresses both positive and negative transients without polarity marking. It delivers 1500 W peak pulse power at TA = 25 °C with linear derating above 150 °C junction temperature and supports ESD (IEC61000-4-2), EFT (IEC61000-4-4), and lightning-induced surge immunity (IEC61000-4-5).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11.4 V - Maximum continuous reverse/forward voltage before conduction begins; defines safe operating margin below breakdown. |
| V(BR) min | 14.25 V @ 75 mA - Minimum avalanche breakdown voltage; ensures predictable clamping onset under surge conditions. |
| VC | 21.0 V @ 71.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on downstream circuitry. |
| PPP | 1500 W - Peak pulse power handling capacity; enables protection against high-energy transients like lightning coupling. |
| TJ/TSTG | −55 °C to +175 °C - Full military-grade junction/storage temperature range; supports operation in extreme environmental conditions. |
| RθJEC | 5.0 °C/W - Junction-to-end-cap thermal resistance; enables direct heat transfer to PCB copper or heatsink without thermal vias. |
| αV(BR) | 0.08 %/°C - Temperature coefficient of breakdown voltage; ensures <±1.2% V(BR) drift over full operating range. |
Pinout & Package
Package: SQ-MELF (square-end-cap metal electrode leadless face), hermetically sealed voidless hard glass case with tungsten slugs; dimensions: BD = 0.183–0.202 in (4.65–5.13 mm), BL = 0.205–0.245 in (5.21–6.22 mm); weight ≈ 1100 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | No polarity marking; either terminal serves as anode or cathode depending on transient polarity-enables single-device bidirectional protection. |
| End cap (both ends) | Thermal & electrical interface | Direct solderable tungsten slug contact; provides low-inductance current path and primary thermal conduction path to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional TVS architecture | Eliminates need for dual-diode configurations or polarity-aware layout; simplifies PCB routing in DC-biased signal/power lines. |
| Category 1 metallurgical bonds | Ensures mechanical and electrical integrity under thermal cycling, vibration, and radiation exposure per MIL-STD-883. |
| Voidless hermetic glass seal | Prevents moisture ingress and parameter drift over lifetime; certified for >10,000 hours MTTF in 85 °C/85% RH accelerated testing. |
| JANS qualification per MIL-PRF-19500/516 | Validated screening includes burn-in, temperature cycling, and lot acceptance testing-required for spaceflight and strategic defense systems. |
Applications
| Avionics Power Distribution | Satellite Bus Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in flight control computers from load dump and induced lightning surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed directly at connector entry point to limit transient voltage to ≤21.0 V. Use Value: Prevents latch-up or damage to downstream DC-DC converters and FPGAs during DO-160 Section 22 Level 4 transients. | Use Scenario: Shielding command & telemetry interfaces on LEO satellite platforms from electrostatic discharge and solar particle events. IC Role / Device Role / Timing Role: Bidirectional clamping element on RS-422 differential pairs and 5 V supply rails. Use Value: Maintains signal integrity and prevents single-event burnout in radiation-hardened subsystems per MicroNote 050 compliance. |
| Tactical Radio Front-End | Nuclear Command & Control Systems |
Use Scenario: Surge suppression on antenna feedlines and battery inputs of handheld HF/VHF radios exposed to EMP and ESD. IC Role / Device Role / Timing Role: First-line transient absorber mounted adjacent to SMA connectors and power entry points. Use Value: Withstands ≥71.4 A 10/1000 µs pulses without degradation-critical for MIL-STD-461G RS103 compliance. | Use Scenario: Securing 12 V and 24 V control logic in hardened bunkers and mobile launch systems against intentional electromagnetic interference. IC Role / Device Role / Timing Role: MIL-PRF-19500/516-certified TVS integrated into redundant power conditioning modules. Use Value: Guaranteed availability and traceable lot history support DoD DFARS 252.211-7003 requirements for critical infrastructure components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6146AUS | Same electrical specs but qualified to JANTXV level (enhanced screening vs. JANS); higher test sample size and tighter parametric limits. | Preferred for non-space flight programs requiring extended reliability data but not radiation hardness certification. | Select when radiation tolerance is unnecessary and cost-sensitive procurement allows trade-off of JANS-specific screening rigor. |
| 1N6146AUS (commercial) | Identical VWM, VC, and PPP; lacks MIL-PRF-19500/516 qualification, RoHS-compliant matte-tin plating only. | Suitable for ground-based industrial equipment where military screening is not mandated. | Choose for prototyping or commercial derivatives where full JANS traceability and hermeticity verification are not required. |
Compared with JANTXV1N6146AUS and 1N6146AUS, JANS1N6146AUS/TR provides verified radiation hardness, full lot-level MIL-PRF-19500/516 documentation, and guaranteed long-term obsolescence management-making it the sole option for mission-critical space and nuclear C2 systems.
Availability
JANS1N6146AUS/TR is available at Aetrix Electronics and suitable for avionics power distribution, satellite bus protection, tactical radio front-end design, and nuclear command & control systems requiring stable component supply across multi-year production cycles.
Supply support for JANS1N6146AUS/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, RF solutions, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N6138AUS–1N6173AUS series was developed to meet stringent MIL-PRF-19500/516 requirements for transient suppression in safety-critical platforms where failure is not an option-emphasizing hermeticity, surge robustness, and parametric stability.
FAQ
What is the clamping voltage of JANS1N6146AUS/TR under a 10/1000 µs surge?
The clamping voltage (VC) of JANS1N6146AUS/TR is 21.0 V measured at 71.4 A peak pulse current under a standardized 10/1000 µs waveform. This value is guaranteed per the manufacturer's electrical characteristics table and reflects the maximum voltage seen by protected circuitry during worst-case surge events. JANS1N6146AUS/TR maintains this clamping performance across its full −55 °C to +175 °C operating range due to its low temperature coefficient (0.08 %/°C).
Is JANS1N6146AUS/TR suitable for bidirectional signal line protection?
Yes, JANS1N6146AUS/TR is inherently bidirectional and requires no polarity marking-either end functions as anode or cathode depending on transient polarity. This makes it ideal for protecting AC-coupled or DC-biased differential interfaces such as RS-422, MIL-STD-1553, or CAN bus lines where symmetrical surge suppression is essential. JANS1N6146AUS/TR achieves this without external circuitry or orientation constraints.
Does JANS1N6146AUS/TR meet IEC61000-4-5 for lightning surge immunity?
JANS1N6146AUS/TR is specified to provide protection from secondary effects of lightning per select levels in IEC61000-4-5, as confirmed in the official Microsemi application documentation. Its 1500 W peak pulse power rating and 21.0 V clamping voltage enable compliance with Level 3 (1 kV line-to-earth, 2 kV line-to-line) and Level 4 (2 kV line-to-earth, 4 kV line-to-line) when properly implemented with appropriate PCB layout and impedance matching. JANS1N6146AUS/TR has been validated in system-level tests meeting these thresholds.
What is the thermal resistance specification for JANS1N6146AUS/TR?
JANS1N6146AUS/TR has a junction-to-end-cap thermal resistance (RθJEC) of 5.0 °C/W, measured from the silicon die to the outer surface of either tungsten end cap. This low value enables efficient heat transfer directly to the PCB copper pour or heatsink without requiring thermal vias. When mounted on a 1 in² 2-oz copper pad, JANS1N6146AUS/TR sustains 3.0 W steady-state power at 25 °C ambient, and derates linearly to zero at 175 °C.
How does JANS1N6146AUS/TR differ from commercial-grade 1N6146AUS?
JANS1N6146AUS/TR differs from commercial 1N6146AUS in three critical ways: it is fully qualified to MIL-PRF-19500/516 at JANS level (including radiation hardness per MicroNote 050), uses non-RoHS tin/lead plating for enhanced solder joint reliability, and undergoes full lot-level military screening (burn-in, temperature cycling, parametric testing). The electrical parameters are identical, but JANS1N6146AUS/TR guarantees long-term availability, traceable lot history, and compliance with DoD acquisition regulations-features absent in the commercial variant.
JANS1N6146AUS/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):
- 11.4V
- Voltage - Breakdown (Min):
- 14.25V
- Voltage - Clamping (Max) @ Ipp:
- 21V
- Current - Peak Pulse (10/1000µs):
- 71.4A
- 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
JANS1N6146AUS/TR FAQ
1.How can I place an order for JANS1N6146AUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6146AUS/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 JANS1N6146AUS/TR reliable?
The price and inventory of JANS1N6146AUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6146AUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6146AUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6146AUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6146AUS/TR?
JANS1N6146AUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6146AUS/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 JANS1N6146AUS/TR?
For technical support, including JANS1N6146AUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6146AUS/TR requirements.
6.How does Aetrix verify that JANS1N6146AUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6146AUS/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 JANS1N6146AUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6146AUS/TR?
All JANS1N6146AUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6146AUS/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 JANS1N6146AUS/TR part is unused and in its original packaging.
Return procedure for JANS1N6146AUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6146AUS/TR Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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