My Inquiry
My Account
Microchip Technology JANTX1N6149AUS/TR
- Part No.:
- JANTX1N6149AUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANTX1N6149AUS/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,825
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N6149AUS/TR from Microsemi is a military-qualified, voidless hermetically sealed bidirectional Transient Voltage Suppressor (TVS) in SQ-MELF package, rated for 1500 W peak pulse power (10/1000 µs), 15.2 V working standoff voltage (VWM), and 27.7 V clamping voltage (VC) at 54.2 A peak pulse current. It operates across –55 °C to +175 °C and is used in high-reliability avionics power rail protection.
For engineers reviewing the JANTX1N6149AUS/TR datasheet, JANTX1N6149AUS/TR pinout, JANTX1N6149AUS/TR application, or JANTX1N6149AUS/TR equivalent, this part delivers MIL-PRF-19500/516 Level JANTX qualification, Category 1 metallurgical bonds, triple-layer passivation, and IEC61000-4-2/4-4/4-5 compliance - critical for ESD, EFT, and lightning-induced surge hardening in defense electronics.
Technical Context
This bidirectional TVS uses a robust hard-glass construction with tungsten slugs and internal Category 1 metallurgical bonds to ensure mechanical integrity and radiation hardness per MicroNote 050. Its symmetric breakdown behavior enables protection of AC-coupled or floating signal/power lines without polarity concerns.
The device exhibits a temperature coefficient of breakdown voltage (αVBR) of 0.085 %/°C and maintains stable clamping performance across its full operating junction temperature range (–55 °C to +175 °C), with thermal resistance from junction to end cap (RθJEC) at 5.0 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in aerospace power bus protection |
| Working Standoff Voltage (VWM) | 15.2 V - maximum continuous DC or repetitive peak voltage before conduction begins |
| Clamping Voltage (VC @ IPP) | 27.7 V at 54.2 A - limits downstream voltage during surge to safe levels for 15 V nominal systems |
| Breakdown Voltage (VBR @ IBR) | 19.0 V at 65 mA - defines onset of avalanche conduction under controlled test conditions |
| Standby Current (ID @ VWM) | 5 µA - negligible leakage at rated standoff, preserving low-power system integrity |
| Operating Temperature Range | –55 °C to +175 °C - supports operation in extreme environments including engine bays and space-grade enclosures |
| Thermal Resistance (Junction-to-End Cap) | 5.0 °C/W - enables direct thermal path to PCB copper or heatsink for sustained pulse handling |
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 (bidirectional) | Common terminal pair | Either end functions identically as anode or cathode depending on transient polarity - no orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic seal | Eliminates internal moisture ingress and long-term parameter drift in humid or vacuum environments |
| Category 1 metallurgical bonds | Ensures bond integrity under thermal cycling, shock, and vibration - validated per MIL-PRF-19500/516 |
| Triple-layer passivation | Prevents surface leakage and corrosion on glass body, maintaining stable VBR over lifetime |
| MIL-PRF-19500/516 JANTX qualification | Guarantees screening, testing, and traceability for mission-critical defense and space applications |
| IEC61000-4-2/4-4/4-5 compliance | Validated protection against ESD (±8 kV contact), EFT (±2 kV), and lightning surges (up to select levels) |
Applications
| Aerospace Power Distribution | Avionics Sensor Interface |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus against load dump and induced lightning transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed directly across input rails of DC-DC converters and motor controllers. Use Value: Limits transient voltage to ≤27.7 V during 1500 W pulses, preventing latch-up or gate oxide damage in downstream SiC MOSFETs and PMICs. |
Use Scenario: Shielding analog sensor inputs (e.g., RTD, thermocouple amplifiers) in flight control units from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (5 µA) standoff protector placed at connector entry point before signal conditioning circuitry. Use Value: Maintains signal integrity with sub-µA standby current while clamping fast ESD spikes (<1 ns rise) without false triggering. |
| Tactical Radio Front-End | Spacecraft Payload Power Conditioning |
Use Scenario: Surge suppression on RF power amplifier bias lines exposed to EMP and antenna coupling effects. IC Role / Device Role / Timing Role: High-reliability TVS mounted adjacent to GaN HEMT bias networks to absorb coupled RF energy and DC transients. Use Value: Withstands 175 °C junction temperature and provides repeatable clamping after >10⁵ surge events - verified per MIL-STD-750 Method 1020. |
Use Scenario: Input protection for DC-DC modules powering star trackers and reaction wheel controllers in LEO satellites. IC Role / Device Role / Timing Role: Radiation-hardened (per MicroNote 050), hermetically sealed TVS on primary 28 V bus input stage. Use Value: Zero outgassing and no internal voids prevent contamination of optical surfaces and ensure TID tolerance beyond 100 krad(Si). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6149US (commercial grade) | No MIL-PRF-19500/516 qualification; same electrical specs but no JANTX screening or traceability | Suitable only for non-military industrial prototypes or ground-test equipment where reliability certification is not mandated | Select when cost sensitivity outweighs formal qualification requirements and environmental stress testing is self-managed |
| JANTXV1N6149AUS/TR | Higher screening level (JANTXV): extended temperature testing, burn-in, and lot traceability per MIL-PRF-19500/516 Appendix A | Required for flight hardware, missile guidance systems, and nuclear command/control where zero defect history is enforced | Choose when program mandates JANTXV-level reliability assurance and full lot documentation for audit readiness |
Compared with 1N6149US and JANTXV1N6149AUS/TR, the JANTX1N6149AUS/TR balances rigorous military screening with cost-effective qualification - delivering proven field reliability for airborne platforms without the overhead of full JANTXV processing.
Availability
JANTX1N6149AUS/TR is available at Aetrix Electronics and suitable for aerospace power distribution, avionics sensor interface, and tactical radio front-end applications requiring stable component supply, full traceability, and long-term obsolescence management.
Supply support for JANTX1N6149AUS/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, hermetic, and MIL-spec components.
The JANTX1N6149AUS/TR belongs to Microsemi's 1N6138AUS–1N6173AUS TVS family, engineered specifically for military-grade transient suppression in harsh-environment electronics where failure is not an option.
FAQ
What is the clamping voltage of JANTX1N6149AUS/TR at its rated peak pulse current?
The JANTX1N6149AUS/TR has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current (IPP) of 54.2 A under the standard 10/1000 µs waveform. This value is measured per MIL-PRF-19500/516 test conditions and ensures predictable voltage limiting for 15 V nominal systems. The JANTX1N6149AUS/TR maintains this clamping performance across its full operating temperature range.
Is JANTX1N6149AUS/TR RoHS compliant?
No, JANTX1N6149AUS/TR is not RoHS compliant. Per the nomenclature table in Microsemi's T4-LDS-0278-1 datasheet, RoHS-compliant versions (marked with "e3") are available only for commercial-grade variants (e.g., 1N6149AUS), not for JANTX-level qualified parts. The JANTX1N6149AUS/TR uses traditional tin/lead plating to meet MIL-PRF-19500/516 solderability and reliability requirements.
What does the "A" suffix in JANTX1N6149AUS/TR signify?
The "A" suffix in JANTX1N6149AUS/TR indicates tighter voltage tolerances: it specifies standard minimum breakdown voltage (VBR = 19.0 V), standard clamping voltage (VC = 27.7 V), and standard peak pulse current (IPP = 54.2 A). Non-A parts have 5% higher VC, 5% lower minimum VBR, and 5% lower IPP. The JANTX1N6149AUS/TR therefore guarantees the most robust transient suppression parameters in its series.
Can JANTX1N6149AUS/TR be used in place of JANTXV1N6149AUS/TR?
JANTX1N6149AUS/TR is not a drop-in replacement for JANTXV1N6149AUS/TR. While both share identical electrical specifications and package, the JANTXV version undergoes additional screening (burn-in, extended temperature testing, lot traceability per Appendix A of MIL-PRF-19500/516). Programs requiring JANTXV qualification cannot substitute JANTX1N6149AUS/TR without requalification. The JANTX1N6149AUS/TR remains fully qualified to the base JANTX level.
What is the thermal resistance specification for JANTX1N6149AUS/TR?
The JANTX1N6149AUS/TR has a thermal resistance from junction to end cap (RθJEC) of 5.0 °C/W, as specified in the Maximum Ratings table. This low thermal resistance enables efficient heat transfer from the silicon junction through the tungsten slug and glass body to the PCB copper or heatsink, supporting repeated 1500 W pulse handling without thermal runaway. The JANTX1N6149AUS/TR relies on end-cap conduction rather than lead-frame conduction for thermal management.
JANTX1N6149AUS/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):
- 15.2V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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
JANTX1N6149AUS/TR FAQ
1.How can I place an order for JANTX1N6149AUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6149AUS/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 JANTX1N6149AUS/TR reliable?
The price and inventory of JANTX1N6149AUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6149AUS/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N6149AUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N6149AUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N6149AUS/TR?
JANTX1N6149AUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6149AUS/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 JANTX1N6149AUS/TR?
For technical support, including JANTX1N6149AUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6149AUS/TR requirements.
6.How does Aetrix verify that JANTX1N6149AUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N6149AUS/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 JANTX1N6149AUS/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N6149AUS/TR?
All JANTX1N6149AUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6149AUS/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 JANTX1N6149AUS/TR part is unused and in its original packaging.
Return procedure for JANTX1N6149AUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N6149AUS/TR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
