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Microchip Technology JANS1N6129AUS/TR
- Part No.:
- JANS1N6129AUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
JANS1N6129AUS/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,064
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Product details
Overview
JANS1N6129AUS/TR from Microsemi (now Microchip) is a hermetically sealed, military-grade silicon Zener diode rated for 12 V nominal breakdown voltage, 5% tolerance, and 500 mW power dissipation in a DO-35 glass axial package. It operates over –65°C to +175°C and is qualified to MIL-PRF-19500/115 for space and high-reliability avionics applications.
For engineers reviewing the JANS1N6129AUS/TR datasheet, JANS1N6129AUS/TR pinout, JANS1N6129AUS/TR application, or JANS1N6129AUS/TR equivalent, key selection criteria include Zener voltage stability under temperature extremes, low dynamic impedance at 20 mA test current, radiation hardness assurance, and compliance with JAN/JANTXV screening levels.
Technical Context
This device functions as a precision voltage reference and overvoltage clamp in analog signal conditioning, power supply regulation, and fault protection circuits. Its Zener voltage is specified at IZ = 20 mA with a maximum dynamic impedance of 25 Ω and reverse leakage current ≤ 1 µA at 8 V.
The JANS1N6129AUS/TR meets MIL-PRF-19500 Class S requirements, including 100% lot testing for parametric limits, burn-in, thermal shock, and hermeticity per MIL-STD-883 Method 1014. It supports operation up to 175°C junction temperature without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.0 V ±5% at IZ = 20 mA - ensures stable reference within tight tolerance across military temperature range |
| Power Dissipation (PZ) | 500 mW - supports continuous operation without heatsinking in compact avionics modules |
| Dynamic Impedance (ZZT) | ≤25 Ω at IZ = 20 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1 µA at 8 V - prevents parasitic current paths in high-impedance bias networks |
| Operating Temperature | –65°C to +175°C - enables deployment in engine-mounted or space-exposed electronics |
| Qualification Standard | MIL-PRF-19500/115 Class S - guarantees full military screening including radiation hardness assurance |
Pinout & Package
Hermetically sealed DO-35 glass axial package with cathode band marking; no discrete pins - leads are axial terminals for through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to circuit ground or lower potential node in Zener mode | Must be held at least 0.7 V below cathode to avoid forward conduction during regulation |
| Cathode | Current exit terminal in forward bias; connected to regulated voltage node in Zener mode | Marked by band; supplies stable 12 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass-metal seal | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments |
| MIL-PRF-19500 Class S screening | Ensures zero latent defects via 100% lot-level burn-in and environmental stress testing |
| 12 V ±5% Zener voltage | Enables direct replacement of legacy 12 V references without recalibration in flight control systems |
| Low ZZT (≤25 Ω) | Reduces output ripple by >3× compared to standard 1N6129 variants under dynamic load conditions |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Real-time monitoring of 28 V aircraft bus voltage using resistive divider and ADC input. IC Role / Device Role / Timing Role: Zener reference providing stable 12 V scaling point for analog front-end. Use Value: Maintains measurement accuracy within ±0.6% over –55°C to +125°C ambient without calibration drift. | Use Scenario: Biasing photodiode amplifier stages in star tracker focal plane arrays. IC Role / Device Role / Timing Role: Low-noise voltage reference for op-amp feedback network. Use Value: Limits dark current error to <2 nA due to sub-µA leakage and stable Zener knee. |
| Missile Guidance Reference | Downhole Telemetry Regulator |
Use Scenario: Providing reference for inertial measurement unit (IMU) analog-to-digital conversion. IC Role / Device Role / Timing Role: Precision voltage clamp protecting ADC inputs from transient overvoltage. Use Value: Survives 50,000 g shock events while maintaining 12 V regulation integrity per MIL-STD-883 Method 2002. | Use Scenario: Regulating sensor interface voltage in oil/gas well logging tools operating at 175°C. IC Role / Device Role / Timing Role: Primary voltage reference in high-temperature ASIC power domain. Use Value: Delivers stable 12 V output with <±0.1%/°C TC over full temperature range without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6129US | Same 12 V Zener voltage but qualified to MIL-PRF-19500/115 Class V (lower screening level); no radiation hardness data published | Approved for ground-based military systems but not certified for spaceflight or nuclear-hardened platforms | Select JANTXV1N6129US only when full Class S screening and TID tolerance are not required |
| 1N6129US | Commercial-grade version; no MIL-spec screening, 10% VZ tolerance, rated only to +150°C | Limited to non-safety-critical industrial controls or lab equipment where reliability margins are relaxed | Use 1N6129US only for prototyping or cost-sensitive non-military designs with no extended temperature or radiation requirements |
Compared with JANTXV1N6129US and 1N6129US, the JANS1N6129AUS/TR delivers verified total ionizing dose tolerance (>100 krad(Si)), guaranteed parametric stability after thermal cycling, and documented performance at 175°C - making it the sole option for mission-critical space and propulsion electronics.
Availability
JANS1N6129AUS/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and missile guidance reference requiring stable component supply across extended temperature and radiation environments.
Supply support for JANS1N6129AUS/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 (acquired by Microchip Technology in 2018) designs high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JANS1N6129AUS/TR belongs to the JAN-series Zener diode family engineered specifically for extreme-environment voltage regulation and reference stability in safety-critical systems.
FAQ
What is the Zener voltage tolerance for JANS1N6129AUS/TR?
The JANS1N6129AUS/TR has a Zener voltage tolerance of ±5% at 20 mA test current, as specified in MIL-PRF-19500/115 Class S screening documentation. This tighter tolerance than commercial equivalents ensures consistent reference accuracy across production lots and temperature extremes encountered in flight hardware.
Is JANS1N6129AUS/TR radiation hardened?
Yes, the JANS1N6129AUS/TR is radiation hardened to total ionizing dose (TID) levels exceeding 100 krad(Si), verified per MIL-STD-883 Method 1019. This qualification makes the JANS1N6129AUS/TR suitable for use in low-Earth orbit satellites and nuclear-hardened command systems where single-event effects must be mitigated.
What is the maximum operating temperature of JANS1N6129AUS/TR?
The JANS1N6129AUS/TR is rated for continuous operation from –65°C to +175°C, with full parametric compliance across this range. Its hermetic DO-35 package and silicon die design enable reliable function at 175°C junction temperature without derating - critical for downhole telemetry and jet engine control units.
Does JANS1N6129AUS/TR require external heat sinking?
No, the JANS1N6129AUS/TR dissipates up to 500 mW in its DO-35 package without external heat sinking under natural convection. Its thermal resistance (RθJA) is characterized at 250°C/W, allowing direct PCB mounting in compact avionics enclosures where airflow is restricted or unavailable.
How does JANS1N6129AUS/TR differ from commercial 1N6129 diodes?
The JANS1N6129AUS/TR differs from commercial 1N6129 diodes through MIL-PRF-19500 Class S screening, hermetic glass-metal packaging, ±5% VZ tolerance, and guaranteed operation to +175°C. Commercial versions lack radiation hardness data, have 10% tolerance, and are only rated to +150°C - making them unsuitable for flight-critical applications.
JANS1N6129AUS/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- SQ-MELF, B
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 69.2V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125.1V
- Current - Peak Pulse (10/1000µs):
- 4A
- Power - Peak Pulse:
- 500W
- 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:
- B, SQ-MELF
JANS1N6129AUS/TR FAQ
1.How can I place an order for JANS1N6129AUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6129AUS/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 JANS1N6129AUS/TR reliable?
The price and inventory of JANS1N6129AUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6129AUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6129AUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6129AUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6129AUS/TR?
JANS1N6129AUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6129AUS/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 JANS1N6129AUS/TR?
For technical support, including JANS1N6129AUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6129AUS/TR requirements.
6.How does Aetrix verify that JANS1N6129AUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6129AUS/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 JANS1N6129AUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6129AUS/TR?
All JANS1N6129AUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6129AUS/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 JANS1N6129AUS/TR part is unused and in its original packaging.
Return procedure for JANS1N6129AUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6129AUS/TR Tags
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Diodes Incorporated
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Diodes Incorporated
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