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Microchip Technology JANS1N6159US/TR
- Part No.:
- JANS1N6159US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6159US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,595
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Product details
Overview
JANS1N6159US/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 38.8 V working standoff voltage (VWM), 70.1 V clamping voltage (VC) at 21.4 A peak pulse current (IPP), and 1500 W peak pulse power (10/1000 µs), deployed in high-reliability avionics power bus protection.
For engineers reviewing the JANS1N6159US/TR datasheet, JANS1N6159US/TR pinout, JANS1N6159US/TR application, or JANS1N6159US/TR equivalent, key selection criteria include military-grade surge robustness, bidirectional clamping symmetry, hermetic glass package integrity, and compliance with IEC61000-4-2/4-4/4-5 transient immunity standards.
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 incorporates Category 1 metallurgical bonds and triple-layer passivation to ensure radiation hardness and long-term stability under thermal cycling.
It delivers 1500 W peak pulse power for 10/1000 µs transients while maintaining ≤5 µA standby current at VWM and a temperature coefficient of breakdown voltage (αV(BR)) of 0.095 %/°C - critical for precision over temperature in satellite power conditioning circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 38.8 V - maximum continuous reverse/forward voltage before conduction; sets system operating margin below clamping threshold |
| VC @ IPP | 70.1 V at 21.4 A - clamped voltage during 10/1000 µs surge; defines worst-case rail excursion seen by downstream ICs |
| PPP | 1500 W - peak transient energy absorption capability; enables protection against lightning-induced surges per IEC61000-4-5 Level 3 |
| TJ Range | −55 °C to +175 °C - extended junction temperature range supports operation in unheated spacecraft bays and engine-mounted electronics |
| RθJEC | 5.0 °C/W - low thermal resistance from junction to end cap; allows direct heat sinking to chassis without PCB copper pour |
| αV(BR) | 0.095 %/°C - predictable V(BR) drift over temperature; simplifies derating calculations for mission-critical voltage thresholds |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "C" (SQ-MELF) surface-mount package with tungsten slugs and tin/lead-plated copper terminals. Dimensions: BD = 0.183–0.202 in (4.65–5.13 mm), BL = 0.205–0.245 in (5.21–6.22 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Current path terminal (non-polarized) | No functional distinction - either end serves as cathode or anode depending on transient polarity; requires no orientation during placement |
| End Cap (both ends) | Thermal and electrical interface | Directly bonded to PCB copper or chassis for low-inductance grounding and efficient heat extraction via RθJEC = 5.0 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC rails without polarity constraints or external diode pairing |
| Category 1 metallurgical bonds | Guarantees bond integrity under 100,000 thermal cycles (−55/+175 °C); eliminates interfacial delamination risk in orbital thermal vacuum environments |
| Voidless hermetic seal | Prevents moisture ingress and internal corrosion over >20-year service life; certified per MIL-STD-883 Method 1014.10 |
| IEC61000-4-5 compliance | Validated for secondary lightning effects up to 2 kV open-circuit / 12 Ω source impedance - meets DO-160 Section 22 Level 3 |
Applications
| Avionics Power Distribution | Satellite Bus Protection |
|---|---|
Use Scenario: Protection of 28 V DC main bus against load dump and ESD events in flight control computers. IC Role / Device Role / Timing Role: Primary bidirectional clamping element placed directly across bus input terminals. Use Value: Limits transient excursions to ≤70.1 V during 1500 W surges, preserving FPGA and ADC supply integrity without derating headroom. |
Use Scenario: Shielding solar array regulator inputs from electrostatic discharge during orbital eclipse transitions. IC Role / Device Role / Timing Role: Standoff-clamp TVS mounted at harness entry point with direct chassis ground tie. Use Value: Withstands ≥100,000 thermal cycles and 10 krad(Si) TID without parameter shift, ensuring uninterrupted bus regulation. |
| Military Vehicle ECUs | Launch Vehicle Telemetry Systems |
Use Scenario: Guarding CAN FD transceiver power rails against ISO 7637-2 Pulse 5a load dump transients. IC Role / Device Role / Timing Role: Secondary-level TVS cascaded after primary filter inductor. Use Value: Clamps within 1 ns response time to protect 5 V logic rails while surviving 1500 W pulses without parametric drift. |
Use Scenario: Securing RS-422 telemetry receiver inputs against induced surges during solid rocket motor ignition. IC Role / Device Role / Timing Role: Bidirectional shunt protector placed immediately before line driver IC. Use Value: Maintains signal integrity by limiting differential-mode surges to <10 Vpp swing, verified per MIL-STD-461G CS115. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANS1N6158US/TR | Lower VWM (35.8 V) and VC (64.6 V); 23.2 A IPP; same package and qualification level | Better suited for 28 V nominal systems requiring tighter clamping margin | Select when system max operating voltage is ≤35 V and lower clamping voltage is prioritized over higher VWM margin |
| JANS1N6160US/TR | Higher VWM (42.6 V) and VC (77.0 V); 19.5 A IPP; identical construction and qualification | Preferred for 42 V automotive or dual-battery aerospace systems needing wider standoff headroom | Choose when operating voltage approaches 40 V and transient energy remains within 1500 W envelope |
Compared with JANS1N6159US/TR, JANS1N6158US/TR offers tighter clamping at lower voltage rails but sacrifices standoff margin, while JANS1N6160US/TR extends safe continuous operation to 42.6 V at the cost of higher clamping excursion - all three share identical hermetic SQ-MELF packaging and JANS-level screening.
Availability
JANS1N6159US/TR is available at Aetrix Electronics and suitable for avionics power distribution, satellite bus protection, military vehicle ECUs, and launch vehicle telemetry systems requiring stable component supply under extended lifecycle commitments.
Supply support for JANS1N6159US/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 emphasis on radiation-hardened and mil-spec components.
The JANS1N6138AUS–JANS1N6173AUS series was developed specifically for mission-critical transient suppression in spaceflight and tactical platforms where failure is not an option - delivering hermetic reliability, precise voltage thresholds, and validated surge survivability.
FAQ
What is the maximum clamping voltage of JANS1N6159US/TR under a 10/1000 µs surge?
The JANS1N6159US/TR has a maximum clamping voltage (VC) of 70.1 V when subjected to its rated peak pulse current of 21.4 A under a 10/1000 µs waveform. This value is measured per MIL-STD-750 Method 3013 and defines the upper voltage limit imposed on protected circuitry during transient events. The JANS1N6159US/TR maintains this clamping performance across its full −55 °C to +175 °C operating junction temperature range.
Is JANS1N6159US/TR RoHS compliant?
No, JANS1N6159US/TR is not RoHS compliant. As a JANS-qualified military-grade part, it uses tin/lead-plated copper terminals per MIL-PRF-19500/516 requirements. RoHS-compliant versions (e3 suffix) are only available for commercial-grade variants (e.g., 1N6159AUS) and are not qualified to JANS level. The JANS1N6159US/TR retains leaded terminations to ensure solder joint reliability under extreme thermal cycling.
What does the "US" suffix indicate in JANS1N6159US/TR?
The "US" suffix in JANS1N6159US/TR denotes the SQ-MELF (square-end-cap) surface-mount package configuration, distinguishing it from axial-leaded versions (e.g., JANS1N6159). This package enables automated placement and provides superior thermal dissipation via end-cap mounting. The "TR" indicates tape-and-reel packaging per EIA-481-B standard, optimized for SMT production. The JANS1N6159US/TR thus combines JANS reliability with surface-mount manufacturability.
How does JANS1N6159US/TR differ from commercial 1N6159AUS?
JANS1N6159US/TR undergoes full MIL-PRF-19500/516 screening including burn-in, temperature cycling, and lot acceptance testing per JANS level, whereas commercial 1N6159AUS is only tested to JEDEC standards. The JANS1N6159US/TR also features hermetic hard-glass construction with Category 1 bonds, while commercial versions may use non-hermetic or lower-reliability packaging. Electrical parameters are identical, but lifetime reliability and environmental survivability are strictly enhanced in JANS1N6159US/TR.
Can JANS1N6159US/TR be used in bidirectional AC signal lines?
Yes, JANS1N6159US/TR is inherently bidirectional and functions identically in both polarities due to symmetrical avalanche characteristics. It is routinely applied across AC-coupled data lines (e.g., RS-422, MIL-STD-1553) and floating DC buses where polarity reversal occurs. Its lack of polarity marking and matched forward/reverse breakdown behavior make JANS1N6159US/TR suitable for protecting balanced differential interfaces without additional circuitry or orientation constraints.
JANS1N6159US/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):
- 38.8V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 21.4A
- 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
JANS1N6159US/TR FAQ
1.How can I place an order for JANS1N6159US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6159US/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 JANS1N6159US/TR reliable?
The price and inventory of JANS1N6159US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6159US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6159US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6159US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6159US/TR?
JANS1N6159US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6159US/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 JANS1N6159US/TR?
For technical support, including JANS1N6159US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6159US/TR requirements.
6.How does Aetrix verify that JANS1N6159US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6159US/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 JANS1N6159US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6159US/TR?
All JANS1N6159US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6159US/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 JANS1N6159US/TR part is unused and in its original packaging.
Return procedure for JANS1N6159US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6159US/TR Tags
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