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Microchip Technology JANS1N6145US/TR
- Part No.:
- JANS1N6145US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6145US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,121
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Product details
Overview
JANS1N6145US/TR from Microsemi is a hermetically sealed, voidless, bidirectional Transient Voltage Suppressor (TVS) qualified to MIL-PRF-19500/516 at JANS level for space-grade reliability. It features a 9.9 V working standoff voltage (VWM), 12.35 V minimum breakdown voltage (V(BR)) at 100 mA, 18.2 V clamping voltage (VC) at 82.4 A peak pulse current (IPP), and 1500 W peak pulse power (10/1000 µs). It is used in radiation-hardened avionics power bus protection.
For engineers reviewing the JANS1N6145US/TR datasheet, JANS1N6145US/TR pinout, JANS1N6145US/TR application, or JANS1N6145US/TR equivalent, key selection criteria include military-grade surge robustness, hermetic glass package integrity, bidirectional clamping symmetry, and compliance with IEC61000-4-2/4-4/4-5 for ESD, EFT, and lightning-induced transients.
Technical Context
This TVS operates as a bidirectional voltage-clamping device with no polarity marking, relying on symmetrical avalanche breakdown in both directions. Its hard-glass construction with tungsten slugs and Category 1 metallurgical bonds ensures mechanical stability under thermal cycling and vibration.
It delivers 1500 W peak pulse power for 10/1000 µs waveforms at 25 °C, with linear derating above 150 °C junction temperature and thermal resistance of 5.0 °C/W from junction to end cap. Standby current is ≤20 µA at 9.9 V VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.9 V - Maximum continuous reverse/forward voltage before conduction begins; defines safe operating margin below clamping threshold. |
| V(BR) min | 12.35 V @ 100 mA - Minimum voltage at which avalanche breakdown initiates; ensures predictable turn-on under surge conditions. |
| VC @ IPP | 18.2 V @ 82.4 A - Clamped voltage during 10/1000 µs transient; determines maximum stress imposed on protected downstream circuitry. |
| PPP | 1500 W - Peak impulse power handling capability; enables suppression of high-energy transients without failure. |
| TJ range | –55 °C to +175 °C - Full military temperature range; supports operation in extreme environments including space and jet engine bays. |
| RθJEC | 5.0 °C/W - Junction-to-end-cap thermal resistance; critical for calculating temperature rise under sustained power dissipation. |
| αV(BR) | 0.08 %/°C - Temperature coefficient of breakdown voltage; enables accurate V(BR) prediction across operating temperature range. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "C" (SQ-MELF) surface-mount package with tin/lead-plated copper terminals; weight ≈1100 mg; dimensions per Microsemi T4-LDS-0278-1 Rev. 2 (BD: 0.183–0.202", BL: 0.205–0.245").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Common terminal pair | No polarity marking; symmetric conduction in both directions; either end serves as anode or cathode depending on transient polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns. |
| Voidless hermetic seal | Prevents moisture ingress and internal corrosion over decades; required for long-life space missions and sealed military enclosures. |
| Category 1 metallurgical bonds | Guarantees bond integrity under shock, vibration, and thermal cycling-critical for launch and flight environments. |
| MIL-PRF-19500/516 JANS qualification | Validates screening, testing, and traceability to Level 1 space-grade standards including radiation hardness per MicroNote 050. |
| IEC61000-4-2/4-4/4-5 compliance | Provides certified immunity against ESD (±8 kV contact), electrical fast transients (4 kV), and lightning surges (up to select levels). |
Applications
| Aerospace Power Distribution | Missile Guidance Signal Integrity |
|---|---|
Use Scenario: Protection of 28 V DC bus in satellite power management units exposed to load dump and switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed across bus rails to limit voltage excursions during fault events. Use Value: Maintains bus voltage ≤18.2 V during 1500 W transients, preventing latch-up or burnout in downstream DC-DC converters and FPGAs. |
Use Scenario: Shielding analog sensor inputs (e.g., gyros, accelerometers) in inertial measurement units from ESD and radiated coupling. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor mounted directly at connector entry points to minimize stub inductance. Use Value: Limits induced transients to <18.2 V within nanoseconds, preserving sub-mV signal fidelity and avoiding ADC saturation or reset glitches. |
| Nuclear Command & Control Interfaces | High-Altitude UAV Avionics |
Use Scenario: Hardening RS-422/485 data links between hardened command consoles and launch control systems against EMP-induced surges. IC Role / Device Role / Timing Role: Bidirectional line protector on differential pairs, leveraging symmetry to preserve common-mode rejection. Use Value: Clamps common- and differential-mode transients equally without skew or imbalance, maintaining >60 dB CMRR up to 100 MHz. |
Use Scenario: Protecting 270 V DC starter-generator interfaces in high-Mach UAVs subjected to rapid thermal gradients and lightning attachment currents. IC Role / Device Role / Timing Role: Primary surge limiter on main power feed, rated for –55 °C to +175 °C operation with zero derating loss at altitude. Use Value: Sustains 1500 W pulse handling at full rating up to 150 °C case temperature, eliminating need for oversized heatsinking in confined bays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6145US | Same electrical specs but qualified to JANTXV level (lower screening rigor than JANS); no radiation hardness documentation provided. | Approved for ground-based military systems but not certified for spaceflight or total ionizing dose (TID) environments. | Select when cost sensitivity outweighs radiation tolerance requirements and mission lifetime is <5 years. |
| 1N6145AUS (commercial) | Identical VWM, V(BR), VC, and PPP ratings; RoHS-compliant matte-tin plating available; no MIL-PRF-19500 qualification or traceability. | Limited to non-safety-critical commercial aerospace prototypes or ground-test fixtures where full qualification is deferred. | Use only for bench validation or early-stage design exploration-not for flight hardware or production deployment. |
Compared with JANS1N6145US/TR, JANTXV1N6145US offers reduced test coverage and no radiation assurance, while 1N6145AUS omits all military screening and traceability-making JANS1N6145US/TR the sole choice for flight-critical, radiation-exposed, or long-duration space applications.
Availability
JANS1N6145US/TR is available at Aetrix Electronics and suitable for aerospace power distribution, missile guidance signal integrity, nuclear command & control interfaces requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANS1N6145US/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 aerospace, defense, and industrial markets, with deep expertise in radiation-hardened and hermetic packaging.
JANS1N6145US/TR belongs to Microsemi's MIL-PRF-19500/516-qualified TVS family engineered specifically for survivability in extreme electromagnetic and thermal environments-including launch vibration, space vacuum, and nuclear EMP exposure.
FAQ
What is the maximum clamping voltage of JANS1N6145US/TR under a 10/1000 µs transient?
The JANS1N6145US/TR has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current of 82.4 A under a 10/1000 µs waveform. This value is guaranteed per Microsemi T4-LDS-0278-1 Rev. 2 and defines the upper voltage limit imposed on protected circuitry during surge events. The JANS1N6145US/TR maintains this clamping performance across its full –55 °C to +175 °C operating range with specified derating.
Is JANS1N6145US/TR suitable for bidirectional signal line protection?
Yes, JANS1N6145US/TR is inherently bidirectional with symmetrical avalanche characteristics in both polarities, making it ideal for protecting AC-coupled, floating, or differential signal lines such as RS-422, MIL-STD-1553, or LVDS interfaces. Its lack of polarity marking simplifies layout and eliminates orientation errors during placement. The JANS1N6145US/TR achieves matched clamping in both directions without performance degradation.
Does JANS1N6145US/TR meet radiation hardness requirements for space applications?
Yes, JANS1N6145US/TR is qualified to JANS level per MIL-PRF-19500/516 and documented as inherently radiation hard per Microsemi MicroNote 050. It is screened for total ionizing dose (TID) tolerance and single-event effects (SEE) resilience appropriate for low-earth orbit and geosynchronous missions. Radiation assurance data for JANS1N6145US/TR is available under controlled distribution from Microchip Technology.
What is the thermal resistance specification for JANS1N6145US/TR?
JANS1N6145US/TR has a thermal resistance of 5.0 °C/W from junction to end cap (RθJEC), measured per standard test conditions. This parameter enables accurate junction temperature calculation during pulsed or steady-state power dissipation. For JANS1N6145US/TR, thermal design must account for mounting interface quality, as end-cap conduction dominates heat transfer-PCB copper area alone is insufficient without direct thermal pad contact.
Can JANS1N6145US/TR replace JANTXV1N6145US in an existing design?
JANS1N6145US/TR is electrically identical to JANTXV1N6145US but exceeds its qualification level with full JANS screening, radiation hardness documentation, and extended traceability. Substitution is permitted and improves reliability-but requires revalidation of procurement documentation, lot traceability, and radiation test reports. The JANS1N6145US/TR does not require PCB changes, though program-level configuration control updates are mandatory.
JANS1N6145US/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):
- 9.9V
- Voltage - Breakdown (Min):
- 12.35V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- 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
JANS1N6145US/TR FAQ
1.How can I place an order for JANS1N6145US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6145US/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 JANS1N6145US/TR reliable?
The price and inventory of JANS1N6145US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6145US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6145US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6145US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6145US/TR?
JANS1N6145US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6145US/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 JANS1N6145US/TR?
For technical support, including JANS1N6145US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6145US/TR requirements.
6.How does Aetrix verify that JANS1N6145US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6145US/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 JANS1N6145US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6145US/TR?
All JANS1N6145US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6145US/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 JANS1N6145US/TR part is unused and in its original packaging.
Return procedure for JANS1N6145US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6145US/TR Tags
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