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Microchip Technology JANS1N6156US/TR
- Part No.:
- JANS1N6156US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6156US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
JANS1N6156US/TR from Microsemi is a hermetically sealed, voidless, bidirectional Transient Voltage Suppressor (TVS) qualified to MIL-PRF-19500/516 at JANS reliability level. It provides 29.7 V working standoff voltage (VWM), 37.1 V minimum breakdown voltage (V(BR)), 53.6 V clamping voltage (VC) at 28.0 A peak pulse current (IPP), and 1500 W peak pulse power for 10/1000 µs waveform - deployed in avionics power rail protection.
For engineers reviewing the JANS1N6156US/TR datasheet, JANS1N6156US/TR pinout, JANS1N6156US/TR application, or JANS1N6156US/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 transient immunity standards.
Technical Context
This TVS operates bidirectionally with symmetrical avalanche breakdown characteristics, enabling protection of AC-coupled or floating signal/power lines without polarity concerns. Its hard-glass construction with tungsten slugs and Category 1 metallurgical bonds ensures stable junction behavior under thermal cycling and radiation exposure.
Rated for -55 °C to +175 °C junction temperature, it delivers 1500 W peak pulse power at 25 °C with linear derating above 150 °C end-cap temperature. Thermal resistance from junction to end cap is 5.0 °C/W, supporting high-reliability mounting on thermally managed metal-core PCBs or chassis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 29.7 V - Maximum continuous DC or repetitive peak voltage the device blocks without conduction. |
| V(BR) min | 37.1 V @ 30 mA - Guaranteed avalanche onset voltage, defining turn-on threshold under transient stress. |
| VC @ IPP | 53.6 V @ 28.0 A - Clamped voltage during 10/1000 µs surge, limiting downstream component stress. |
| PPP | 1500 W - Peak impulse power handling capability, critical for lightning-induced secondary surges. |
| ID @ VWM | 5 µA - Ultra-low leakage at rated standoff, minimizing standby power loss in battery-backed systems. |
| αV(BR) | 0.095 %/°C - Temperature coefficient ensuring predictable V(BR) drift across military temperature range. |
| TJ/TSTG | -55 °C to +175 °C - Full military temperature range support without parameter degradation or bond failure. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "C" (SQ-MELF) surface-mount package with tungsten slugs and tin/lead-plated copper terminals. No polarity marking due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either end serves as anode or cathode depending on transient polarity - no orientation required during placement. |
| End Cap (both ends) | Thermal and electrical termination | Directly interfaces with PCB pads for heat dissipation and low-inductance surge current path. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination risk over 20+ year field life in vacuum or humid environments. |
| Category 1 metallurgical bonds | Guarantees interconnect integrity under mechanical shock (100 g), vibration, and thermal cycling per MIL-STD-883. |
| MIL-PRF-19500/516 JANS qualification | Validated screening includes burn-in, temperature cycling, and lot acceptance testing for space-qualified electronics. |
| Bidirectional clamping symmetry | Enables single-device protection of differential buses (e.g., RS-422, MIL-STD-1553) without external diode pairing. |
Applications
| Aerospace Power Distribution | Avionics Sensor Interfaces |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus feeders against load dump and lightning-induced transients. IC Role / Device Role / Timing Role: Standoff-clamping TVS placed directly at bus entry point to clamp surges before reaching downstream regulators and converters. Use Value: Withstands 1500 W 10/1000 µs pulses while maintaining 29.7 V standoff - prevents brownout or latch-up in flight-critical power modules. |
Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) in fly-by-wire control units from ESD and EFT events. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential sensor lines, leveraging symmetry to suppress ± transients without polarity constraints. Use Value: 5 µA leakage at 29.7 V preserves signal integrity in high-impedance sensor front-ends; RoHS-compliant matte-tin option available for commercial variants. |
| Tactical Radio Front-Ends | Satellite Command Receivers |
Use Scenario: Input-stage surge suppression for HF/VHF transceivers exposed to antenna-coupled lightning energy. IC Role / Device Role / Timing Role: First-line TVS mounted at RF connector interface, clamping fast-rising transients before LNA input stages. Use Value: 53.6 V clamping voltage limits peak stress on GaAs FETs; hermetic seal prevents RF performance drift in humid coastal deployments. |
Use Scenario: Protection of command decoder inputs in LEO satellites subjected to single-event transients and TID effects. IC Role / Device Role / Timing Role: Radiation-hardened TVS suppressing induced surges on command lines without latch-up or parametric shift. Use Value: Inherent radiation hardness per MicroNote 050 enables operation beyond 100 krad(Si); JANS qualification confirms screening for spaceflight use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6156AUS | Commercial-grade version; same VWM, V(BR), VC, and IPP but not MIL-PRF-19500/516 qualified. | Lacks JANS screening, burn-in, and radiation hardness validation - suitable only for non-mission-critical ground systems. | Select when cost sensitivity outweighs long-term reliability requirements and radiation environment is benign. |
| JANS1N6155US/TR | Lower VWM (27.4 V), lower VC (49.9 V), higher IPP (30.1 A); identical package and qualification level. | Better suited for 24 V systems requiring tighter clamping margin; slightly reduced surge energy handling (1490 W). | Choose for 24 V avionics rails where lower clamping voltage improves downstream IC survivability. |
Compared with JANS1N6156US/TR, 1N6156AUS trades military reliability for cost savings, while JANS1N6155US/TR offers optimized clamping for 24 V systems - both retain the same SQ-MELF form factor and bidirectional architecture.
Availability
JANS1N6156US/TR is available at Aetrix Electronics and suitable for aerospace power distribution, avionics sensor interfaces, tactical radio front-ends, and satellite command receivers requiring stable component supply across extended product lifecycles.
Supply support for JANS1N6156US/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 defense, aerospace, and industrial markets.
The JANS1N6156US/TR belongs to Microsemi's military-qualified TVS family engineered specifically for MIL-PRF-19500/516-compliant surge protection in mission-critical platforms where failure is not an option.
FAQ
What is the maximum clamping voltage of JANS1N6156US/TR under a 10/1000 µs surge?
The JANS1N6156US/TR has a maximum clamping voltage (VC) of 53.6 V when subjected to its rated 28.0 A peak pulse current (IPP) with a 10/1000 µs waveform. This value is guaranteed per the manufacturer's electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during transient events.
Is JANS1N6156US/TR compatible with lead-free reflow processes?
JANS1N6156US/TR is specified for solder temperature up to 260 °C for 10 seconds, making it compatible with standard lead-free reflow profiles. Its tin/lead-plated terminals are designed for SnPb assembly; RoHS-compliant matte-tin versions are available for commercial-grade variants but not for JANS-level parts per the nomenclature note.
Does JANS1N6156US/TR require polarity-aware PCB layout?
No - JANS1N6156US/TR is a bidirectional TVS with symmetrical avalanche characteristics, so either end may be connected to either side of the protected line. The device has no polarity marking, and its SQ-MELF package supports orientation-agnostic placement, simplifying automated assembly and reducing layout constraints.
How does JANS1N6156US/TR perform under radiation exposure?
JANS1N6156US/TR is inherently radiation-hardened as documented in Microsemi MicroNote 050, with validated functionality beyond 100 krad(Si). Its hard-glass construction and Category 1 metallurgical bonds prevent parametric shift or latch-up under total ionizing dose and single-event effects typical in LEO and MEO satellite orbits.
What is the thermal resistance specification for JANS1N6156US/TR?
JANS1N6156US/TR has a junction-to-end-cap thermal resistance (RθJEC) of 5.0 °C/W. This value enables effective heat transfer from the silicon junction through the tungsten slug and glass body to the PCB pad, supporting reliable operation at full 1500 W pulse power when mounted on thermally optimized land patterns.
JANS1N6156US/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):
- 29.7V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.6V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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
JANS1N6156US/TR FAQ
1.How can I place an order for JANS1N6156US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6156US/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 JANS1N6156US/TR reliable?
The price and inventory of JANS1N6156US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6156US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6156US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6156US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6156US/TR?
JANS1N6156US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6156US/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 JANS1N6156US/TR?
For technical support, including JANS1N6156US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6156US/TR requirements.
6.How does Aetrix verify that JANS1N6156US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6156US/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 JANS1N6156US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6156US/TR?
All JANS1N6156US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6156US/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 JANS1N6156US/TR part is unused and in its original packaging.
Return procedure for JANS1N6156US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6156US/TR Tags
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