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Microchip Technology JANS1N6171US/TR
- Part No.:
- JANS1N6171US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANS1N6171US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,341
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Product details
Overview
JANS1N6171US/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 provides 121.6 V working standoff voltage (VWM), 218.4 V clamping voltage (VC) at 6.9 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 JANS1N6171US/TR datasheet, JANS1N6171US/TR pinout, JANS1N6171US/TR application, or JANS1N6171US/TR equivalent, key selection criteria include its JANS-level qualification, bidirectional operation, hard-glass SQ-MELF package, 175 °C max junction temperature, and compliance with IEC61000-4-2/4-4/4-5 transient immunity standards.
Technical Context
This device operates as a bidirectional avalanche diode TVS, leveraging Category 1 metallurgical bonds and triple-layer passivation to sustain repeated 1500 W transients without degradation. Its clamping behavior is defined by a 218.4 V VC at 6.9 A IPP under 10/1000 µs waveform, with breakdown voltage V(BR) ≥152.0 V at 8 mA.
Thermal performance is governed by RθJEC = 5.0 °C/W and a -55 °C to +175 °C operating junction range. Standby leakage remains ≤5 µA at 121.6 V VWM, and it exhibits αV(BR) = 0.105 %/°C temperature coefficient for predictable voltage drift across temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 121.6 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets system operating margin. |
| V(BR) min | 152.0 V @ 8 mA - Minimum avalanche breakdown voltage; ensures reliable turn-on above normal operating voltage. |
| VC @ IPP | 218.4 V @ 6.9 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected circuitry. |
| PPP | 1500 W - Peak pulse power handling capability; enables robust protection against lightning-induced surges per IEC61000-4-5. |
| TJ Range | -55 °C to +175 °C - Full military temperature range; supports deployment in uncontrolled environments like satellite power systems. |
| ID @ VWM | ≤5 µA - Ultra-low leakage at rated standoff; prevents parasitic loading on high-impedance sensor or reference circuits. |
| αV(BR) | 0.105 %/°C - Temperature coefficient of breakdown voltage; allows accurate derating in thermal design for aerospace platforms. |
Pinout & Package
Package: SQ-MELF (Square-End-Cap Metal Electrode Leadless Face), hermetically sealed voidless hard glass with tungsten slugs; terminals are tin/lead plated copper; no polarity marking due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No designated anode or cathode; either terminal serves as input/output for transient suppression in AC or floating DC lines. |
| End Cap (both ends) | Thermal and electrical interface | Directly contacts PCB pads for low-inductance surge path and primary heat dissipation route via RθJEC = 5.0 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal delamination risk under thermal cycling and radiation exposure-critical for 15+ year satellite missions. |
| Category 1 metallurgical bonds | Guarantees bond integrity under mechanical shock and vibration per MIL-STD-883, enabling use in launch-stage electronics. |
| Triple-layer passivation | Prevents surface leakage and corrosion in humid or contaminated environments, maintaining <5 µA ID stability over lifetime. |
| JANS qualification per MIL-PRF-19500/516 | Validated screening includes burn-in, temperature cycling, and lot acceptance testing-required for DoD and NASA Class S applications. |
Applications
| Avionics Power Bus Protection | Satellite Command & Data Handling |
|---|---|
Use Scenario: Suppressing load dump and lightning-induced transients on 28 V DC aircraft power distribution networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main bus rails to clamp surges before they reach downstream regulators and FPGAs. Use Value: 218.4 V clamping at 6.9 A ensures protected ICs see <220 V peak, well below 250 V absolute maximum ratings of MIL-STD-1553 transceivers. |
Use Scenario: Protecting command receiver inputs and telemetry outputs in LEO satellite payloads exposed to ESD and single-event transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on RS-422 differential pairs interfacing with ground station uplinks. Use Value: Radiation-hardened construction and -55 °C to +175 °C operation enable uninterrupted function during orbital thermal cycling and proton belt passage. |
| Military Vehicle ECUs | Ground-Based Radar Power Supplies |
Use Scenario: Guarding microcontroller I/O and CAN transceivers in armored vehicle engine control units subject to ISO 7637-2 pulse 5a/b. IC Role / Device Role / Timing Role: Primary surge clamp on 12 V supply rail feeding safety-critical actuator drivers. Use Value: 1500 W PPP rating absorbs full 12 V/100 A load dump energy without failure, meeting MIL-STD-1275B requirements. |
Use Scenario: Shielding high-voltage DC link monitoring circuits in S-band radar transmitter power supplies from switching transients. IC Role / Device Role / Timing Role: Standoff-rated TVS across isolated sense resistors measuring 1 kV DC bus current. Use Value: 121.6 V VWM permits safe operation with 1000 V isolation barriers while clamping fast-rising spikes to <220 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6171US | Same electrical specs but qualified to JANTXV level (not JANS); lacks radiation hardness validation and extended screening for space use. | Approved for airborne but not spaceflight programs; unsuitable for Class S or NASA GSFC-8719.13B compliance. | Select only when JANS-level radiation tolerance and full MIL-PRF-19500/516 screening are not required. |
| 1N6171AUS | Commercial-grade version; identical VWM, VC, and PPP, but no MIL qualification, no Category 1 bonds, and no triple-layer passivation. | Limited to non-safety-critical industrial equipment; fails MIL-STD-750 method 1020 ESD sensitivity test. | Use only in cost-sensitive terrestrial applications where environmental stress and lifetime reliability are less stringent. |
Compared with JANTXV1N6171US and 1N6171AUS, the JANS1N6171US/TR delivers verified radiation hardness, Category 1 metallurgical bonding, and full MIL-PRF-19500/516 screening-making it the sole option for mission-critical space electronics requiring zero-failure tolerance over 15-year lifetimes.
Availability
JANS1N6171US/TR is available at Aetrix Electronics and suitable for avionics power bus protection, satellite command & data handling, and military vehicle ECU designs requiring stable component supply across long production cycles and obsolescence-prone programs.
Supply support for JANS1N6171US/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, radiation-hardened, and military-qualified analog and mixed-signal components.
The JANS1N6171US/TR belongs to Microsemi's legacy MIL-PRF-19500/516–qualified TVS family, engineered specifically for defense, aerospace, and nuclear instrumentation systems demanding zero-failure operation under extreme thermal, mechanical, and radiation stress.
FAQ
What does the "JANS" prefix signify for JANS1N6171US/TR?
The "JANS" prefix certifies that JANS1N6171US/TR has undergone full MIL-PRF-19500/516 screening for space applications-including radiation hardness assurance per MicroNote 050, extended temperature cycling, and lot acceptance testing. This distinguishes it from JAN, JANTX, and JANTXV variants, which lack full space qualification.
Is JANS1N6171US/TR bidirectional, and how does that affect circuit placement?
Yes, JANS1N6171US/TR is inherently bidirectional due to symmetrical avalanche junction construction, with no polarity marking. This allows direct placement across AC lines or floating DC rails without orientation concerns-ideal for protecting differential interfaces like RS-422 or MIL-STD-1553 buses where voltage polarity reverses.
What is the thermal resistance path for JANS1N6171US/TR, and how should it be mounted?
JANS1N6171US/TR uses a junction-to-end-cap (RθJEC) thermal path of 5.0 °C/W. It must be soldered directly to large, thermally robust PCB pads per the SQ-MELF pad layout-no thermal vias or heatsinks are needed, but adhesive bonding in the center pad is optional for mechanical reinforcement in high-vibration environments.
Does JANS1N6171US/TR meet IEC61000-4-5 for lightning surge immunity?
Yes, JANS1N6171US/TR is validated for secondary effects of lightning per select levels of IEC61000-4-5, supported by its 1500 W peak pulse power rating at 10/1000 µs and 218.4 V clamping voltage. Its hard-glass construction and Category 1 bonds ensure consistent performance across repeated surges without parametric shift.
How does the "A" suffix in JANS1N6171US/TR impact voltage tolerances?
The "A" suffix in JANS1N6171US/TR indicates standard voltage tolerance: minimum V(BR) = 152.0 V, VWM = 121.6 V, and VC = 218.4 V. Non-A versions (e.g., JANS1N6171US) have 5% lower V(BR), 5% higher VC, and 5% lower IPP-making the "A" variant the only one guaranteed to meet the published 121.6 V / 218.4 V spec limits.
JANS1N6171US/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):
- 121.6V
- Voltage - Breakdown (Min):
- 152V
- Voltage - Clamping (Max) @ Ipp:
- 218.4V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- 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
JANS1N6171US/TR FAQ
1.How can I place an order for JANS1N6171US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6171US/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 JANS1N6171US/TR reliable?
The price and inventory of JANS1N6171US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6171US/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6171US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6171US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6171US/TR?
JANS1N6171US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6171US/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 JANS1N6171US/TR?
For technical support, including JANS1N6171US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6171US/TR requirements.
6.How does Aetrix verify that JANS1N6171US/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6171US/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 JANS1N6171US/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6171US/TR?
All JANS1N6171US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6171US/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 JANS1N6171US/TR part is unused and in its original packaging.
Return procedure for JANS1N6171US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6171US/TR Tags
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