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Microchip Technology JANS1N6155US/TR
- Part No.:
- JANS1N6155US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6155US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,769
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Product details
Overview
JANS1N6155US/TR from Microsemi is a military-qualified, voidless hermetically sealed bidirectional Transient Voltage Suppressor (TVS) in SQ-MELF (C) package, rated for 1500 W peak pulse power (10/1000 µs), 27.4 V working standoff voltage (VWM), and 49.9 V clamping voltage (VC) at 30.1 A peak pulse current - deployed in avionics power bus protection and missile guidance interface circuits.
For engineers reviewing the JANS1N6155US/TR datasheet, JANS1N6155US/TR pinout, JANS1N6155US/TR application, or JANS1N6155US/TR equivalent, key selection criteria include MIL-PRF-19500/516 JANS qualification level, bidirectional surge capability, hard-glass hermetic construction, temperature coefficient of breakdown voltage (0.095 %/°C), and compatibility with high-reliability PCB assembly under MIL-STD-202 and MIL-STD-750 test conditions.
Technical Context
This device operates as a bidirectional voltage-clamping TVS diode with no polarity marking, relying on symmetrical avalanche breakdown in both directions to suppress transients up to 1500 W. Its junction-to-end-cap thermal resistance is 5.0 °C/W, enabling stable operation up to +175 °C junction temperature when mounted on thermally optimized copper pads.
The JANS1N6155US/TR uses Category 1 internal metallurgical bonds and triple-layer passivation to ensure radiation hardness per MicroNote 050 and immunity to ESD per MIL-STD-750 Method 1020. It meets IEC61000-4-2 (ESD), IEC61000-4-4 (EFT), and select levels of IEC61000-4-5 (lightning-induced surges).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single high-energy transients without degradation in aerospace power rail protection |
| Working Standoff Voltage (VWM) | 27.4 V - maximum continuous DC or repetitive peak voltage before conduction begins |
| Clamping Voltage (VC @ IPP) | 49.9 V at 30.1 A - limits downstream circuit voltage during surge, protecting 30 V-rated ICs |
| Breakdown Voltage (VBR @ IBR) | 34.2 V at 30 mA - precise avalanche onset point, with ±5% tolerance per "A" suffix designation |
| Temperature Coefficient of VBR | 0.095 %/°C - predictable VBR drift over -55 °C to +175 °C operating range |
| Junction Temperature Range | -55 °C to +175 °C - supports operation in engine bay, seeker head, and launch environment |
| Steady-State Power (TEC = 150 °C) | 5.0 W - defines maximum continuous dissipation with end-cap thermal management |
Pinout & Package
Package: SQ-MELF (C) - hermetically sealed voidless hard glass case with tungsten slugs and tin/lead-plated copper terminals; square-end-cap geometry enables automated placement and high mechanical robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path terminal | No polarity marking - symmetric terminals conduct identically in either direction during transient events |
| End Cap (both ends) | Thermal and mechanical interface | Primary heat dissipation path to PCB pad; requires direct solder contact for RθJEC = 5.0 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns |
| Category 1 metallurgical bonds | Guarantees bond integrity under shock, vibration, and thermal cycling per MIL-PRF-19500/516 JANS level |
| Voidless hermetic glass seal | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments |
| Triple-layer passivation | Blocks surface leakage paths and enhances stability of VBR and ID over lifetime |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space-qualified systems |
Applications
| Aerospace Power Distribution | Missile Guidance Interface |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp absorbing 1500 W transients without failure. Use Value: Prevents latch-up or burnout in MIL-STD-704-compliant power converters and remote terminal units. |
Use Scenario: Shielding analog sensor inputs in inertial measurement units (IMUs) from EFT and lightning-induced coupling. IC Role / Device Role / Timing Role: Fast-response TVS limiting voltage excursions to <50 V during sub-microsecond transients. Use Value: Maintains signal fidelity and prevents ADC saturation or op-amp damage in high-G environments. |
| Avionics Data Bus Protection | Tactical Radio Front-End |
Use Scenario: Guarding ARINC 429 or MIL-STD-1553B data lines against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (<5 µA @ 27.4 V) standoff device with sub-nanosecond response. Use Value: Preserves signal integrity while meeting IEC61000-4-2 Level 4 (15 kV air, 8 kV contact) requirements. |
Use Scenario: Protecting RF power amplifier bias rails and control lines in manpack radios exposed to field ESD. IC Role / Device Role / Timing Role: Robust clamping element with 0.095 %/°C VBR tempco for stable operation across desert-to-arctic temperatures. Use Value: Eliminates need for derating or redundant TVS devices in compact, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6155US | Same electrical specs but qualified to JANTXV level; higher screening (burn-in, temperature cycling) and tighter lot traceability | Preferred for flight-critical subsystems where extended reliability testing is mandated | Select when full JANTXV test documentation and lot-level conformance reports are required |
| 1N6155AUS | Commercial-grade version; identical VWM, VC, and PPP, but not MIL-PRF-19500/516 qualified | Suitable for ground-test equipment or non-flight hardware with cost-sensitive BOMs | Choose only for non-mission-critical prototypes or lab validation where MIL-spec is not enforced |
Compared with JANTXV1N6155US, the JANS1N6155US/TR offers the highest reliability tier (JANS) with full radiation hardness assurance and extended environmental stress screening, while 1N6155AUS provides identical electrical performance without military qualification - enabling cost-optimized design reuse across program phases.
Availability
JANS1N6155US/TR is available at Aetrix Electronics and suitable for aerospace power distribution, missile guidance interface, avionics data bus protection, and tactical radio front-end applications requiring stable component supply under ITAR-controlled logistics and long-lifecycle support.
Supply support for JANS1N6155US/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, with deep expertise in radiation-hardened and MIL-spec components.
The JANS1N6155US/TR belongs to Microsemi's legacy 1N61xxAUS TVS family, engineered specifically for mission-critical transient suppression in harsh-environment electronics where failure is not an option.
FAQ
What is the JANS1N6155US/TR's clamping voltage and at what current is it specified?
The JANS1N6155US/TR has a maximum clamping voltage (VC) of 49.9 V, measured at a peak pulse current (IPP) of 30.1 A using the standard 10/1000 µs waveform. This value ensures downstream 30 V-rated components remain within safe operating limits during surge events. The JANS1N6155US/TR maintains this clamping performance across its full -55 °C to +175 °C junction temperature range.
Is the JANS1N6155US/TR unidirectional or bidirectional, and how is polarity indicated?
The JANS1N6155US/TR is a bidirectional TVS diode with symmetrical avalanche characteristics in both forward and reverse directions. It carries no polarity marking on the SQ-MELF glass body, and both terminals function identically as anode/cathode depending on transient polarity. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or floating nodes.
What does the "JANS" prefix signify for the JANS1N6155US/TR?
The "JANS" prefix certifies that the JANS1N6155US/TR is qualified to MIL-PRF-19500/516 at the highest reliability level - including extended environmental stress screening, radiation hardness verification per MicroNote 050, and full lot traceability. JANS devices are approved for use in spaceflight, strategic weapons, and other zero-failure-tolerance applications.
Can the JANS1N6155US/TR be used in RoHS-compliant assemblies?
No - the JANS1N6155US/TR uses tin/lead plating on its copper terminals and is not RoHS compliant. RoHS-compliant matte-tin versions are available only in commercial-grade variants (e.g., 1N6155AUS), not in JANS, JANTXV, JANTX, or JAN qualified parts. For JANS1N6155US/TR, leaded solder process compatibility and MIL-STD-202 compliance are maintained.
What is the thermal resistance path for the JANS1N6155US/TR, and how should it be mounted?
The JANS1N6155US/TR specifies a junction-to-end-cap thermal resistance (RθJEC) of 5.0 °C/W. To achieve this, both square end caps must be soldered directly to adequately sized copper pads - no adhesive-only mounting. The datasheet recommends center-spot adhesive only as optional reinforcement, not as primary thermal interface. Free-air derating curves assume proper end-cap thermal contact.
JANS1N6155US/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):
- 27.4V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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
JANS1N6155US/TR FAQ
1.How can I place an order for JANS1N6155US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6155US/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 JANS1N6155US/TR reliable?
The price and inventory of JANS1N6155US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6155US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6155US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6155US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6155US/TR?
JANS1N6155US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6155US/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 JANS1N6155US/TR?
For technical support, including JANS1N6155US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6155US/TR requirements.
6.How does Aetrix verify that JANS1N6155US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6155US/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 JANS1N6155US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6155US/TR?
All JANS1N6155US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6155US/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 JANS1N6155US/TR part is unused and in its original packaging.
Return procedure for JANS1N6155US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6155US/TR Tags
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