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Microchip Technology JANS1N6128AUS/TR
- Part No.:
- JANS1N6128AUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
JANS1N6128AUS/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,864
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Product details
Overview
JANS1N6128AUS/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-213AA (GLASS) package; used for precision voltage reference and overvoltage protection in aerospace power conditioning circuits.
For engineers reviewing the JANS1N6128AUS/TR datasheet, JANS1N6128AUS/TR pinout, JANS1N6128AUS/TR application, or JANS1N6128AUS/TR equivalent, key considerations include Zener voltage accuracy at 25°C, temperature coefficient stability across –65°C to +175°C, low dynamic impedance, and MIL-PRF-19500/407 qualification status.
Technical Context
This device operates as a two-terminal voltage-regulating element with sharp reverse-breakdown characteristics. Its Zener voltage is specified at 12.0 V ±5% with a maximum dynamic impedance of 20 Ω at IZ = 20 mA and a temperature coefficient of ±0.075%/°C over full military temperature range.
Designed to meet MIL-PRF-19500 Class S requirements, JANS1N6128AUS/TR features hermetic glass-metal sealing, 100% lot testing per screening levels, and radiation hardness assurance (RHA) up to 100 krad(Si) total ionizing dose.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.0 V ±5% at IZ = 20 mA - sets stable reference point for analog monitoring circuits |
| Power Dissipation (PZM) | 500 mW - supports continuous regulation in compact, conduction-cooled modules |
| Dynamic Impedance (ZZT) | ≤20 Ω at IZ = 20 mA - ensures minimal output voltage variation under load transients |
| Temperature Coefficient | ±0.075%/°C - maintains <±1% VZ drift over –65°C to +175°C operating range |
| Reverse Leakage (IR) | ≤5 µA at VR = 9.0 V - prevents parasitic current paths in high-impedance bias networks |
| MIL-PRF-19500 Screening | Class S - includes burn-in, thermal shock, vibration, and hermeticity testing for flight-critical use |
Pinout & Package
DO-213AA (GLASS) hermetic axial-leaded package with cathode band marking; no internal leads or multi-pin configuration - functions as a two-terminal bilateral device where anode and cathode are defined by polarity during circuit connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common reference node in reverse-bias regulation | Connected to lower-potential side of regulated rail; defines ground-referenced Zener orientation |
| Cathode | Current exit terminal in forward bias; Zener breakdown terminal in reverse bias | Connected to higher-potential side; provides stable 12 V reference relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass-Metal Seal | Prevents moisture ingress and long-term parameter drift in vacuum or humid environments |
| MIL-PRF-19500/407 Qualified | Meets full Class S screening for spaceflight and airborne avionics programs |
| Low Dynamic Impedance | Enables stable regulation even with ±10% input ripple in unregulated DC-DC front-ends |
| Radiation Hardness Assurance | Validated to 100 krad(Si) TID - suitable for low-earth orbit satellite power supervisors |
Applications
| Avionics Power Monitoring | Satellite Bus Voltage Reference |
|---|---|
Use Scenario: Real-time detection of 28 V aircraft bus undervoltage/overvoltage events in flight control computers. IC Role / Device Role / Timing Role: Zener reference element in comparator threshold network. Use Value: 12 V reference enables ±0.5 V trip-point accuracy over full temperature range without calibration. | Use Scenario: Providing stable bias voltage for radiation-tolerant ADCs in LEO satellite telemetry systems. IC Role / Device Role / Timing Role: Precision voltage reference for analog-to-digital conversion front-end. Use Value: ≤20 Ω ZZT minimizes code-width variation under load switching transients. |
| Missile Guidance Sensor Biasing | Nuclear Reactor Control Interface |
Use Scenario: Biasing piezoelectric accelerometers in tactical missile inertial measurement units. IC Role / Device Role / Timing Role: Low-noise DC bias source for high-impedance sensor elements. Use Value: ≤5 µA IR prevents signal leakage that would degrade accelerometer SNR below 80 dB. | Use Scenario: Isolated voltage clamping in safety-critical reactor trip circuitry operating at 125°C ambient. IC Role / Device Role / Timing Role: Overvoltage protection element in fail-safe shutdown path. Use Value: Hermetic DO-213AA package sustains operation after 1000 thermal cycles between –65°C and +175°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N6128AUS | Same Zener voltage and screening level, but qualified to MIL-PRF-19500/407 Class V instead of Class S | Approved for ground-based military systems; not certified for flight hardware | Select JANS1N6128AUS/TR when Class S screening and RHA are required |
| 1N6128AUS/TR | Commercial-grade version; no MIL-PRF-19500 qualification, no RHA data, wider temp range (–65°C to +150°C) | Limited to non-safety-critical industrial or test equipment | Use only where radiation exposure and extended temperature operation are not design constraints |
Compared with JANTXV1N6128AUS and 1N6128AUS/TR, JANS1N6128AUS/TR delivers verified Class S screening, 100 krad(Si) RHA, and guaranteed operation to +175°C - essential for launch vehicle power sequencers and reentry vehicle telemetry.
Availability
JANS1N6128AUS/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite bus voltage reference, and missile guidance sensor biasing requiring stable component supply under extended temperature and radiation-exposed conditions.
Supply support for JANS1N6128AUS/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 applications.
JANS1N6128AUS/TR belongs to the JANS-series radiation-hardened Zener diode family, engineered specifically for voltage reference and overvoltage protection in mission-critical systems operating beyond commercial environmental limits.
FAQ
What is the Zener voltage tolerance for JANS1N6128AUS/TR?
JANS1N6128AUS/TR has a Zener voltage tolerance of ±5% at 12.0 V nominal, tested at 20 mA Zener current and 25°C ambient. This tolerance remains valid across the full military temperature range (–65°C to +175°C) due to its specified ±0.075%/°C temperature coefficient, ensuring predictable performance in flight-critical power monitoring circuits using JANS1N6128AUS/TR.
Is JANS1N6128AUS/TR qualified to MIL-PRF-19500 Class S?
Yes, JANS1N6128AUS/TR is fully qualified to MIL-PRF-19500/407 Class S, including 100% lot testing for burn-in, thermal shock, mechanical shock, vibration, and fine-and-gross leak hermeticity. This qualification is documented in Microchip's QML listing and is required for JANS1N6128AUS/TR deployment in spaceflight and airborne avionics programs.
What is the maximum operating temperature for JANS1N6128AUS/TR?
JANS1N6128AUS/TR is rated for continuous operation from –65°C to +175°C, validated through Class S screening per MIL-PRF-19500/407. Its hermetic DO-213AA package and silicon die construction enable reliable function at +175°C ambient - exceeding commercial and many industrial Zener diodes - making JANS1N6128AUS/TR suitable for turbine engine-mounted electronics and nuclear facility instrumentation.
Does JANS1N6128AUS/TR have radiation hardness assurance (RHA)?
Yes, JANS1N6128AUS/TR is radiation hardened to 100 krad(Si) total ionizing dose (TID), with test data published in Microchip's radiation reports. This RHA level is confirmed for JANS1N6128AUS/TR and supports use in low-earth orbit satellites and strategic missile guidance systems where cumulative radiation exposure must be mitigated without derating.
What package type does JANS1N6128AUS/TR use?
JANS1N6128AUS/TR uses the DO-213AA (also known as GLASS) hermetically sealed axial-leaded package, featuring a glass-to-metal seal and cathode band marking. This package provides long-term parameter stability and moisture resistance critical for JANS1N6128AUS/TR deployment in vacuum, high-humidity, or thermally cycled aerospace environments.
JANS1N6128AUS/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):
- 62.2V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 112.8V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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
JANS1N6128AUS/TR FAQ
1.How can I place an order for JANS1N6128AUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6128AUS/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 JANS1N6128AUS/TR reliable?
The price and inventory of JANS1N6128AUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6128AUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N6128AUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6128AUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6128AUS/TR?
JANS1N6128AUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6128AUS/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 JANS1N6128AUS/TR?
For technical support, including JANS1N6128AUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6128AUS/TR requirements.
6.How does Aetrix verify that JANS1N6128AUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N6128AUS/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 JANS1N6128AUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N6128AUS/TR?
All JANS1N6128AUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6128AUS/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 JANS1N6128AUS/TR part is unused and in its original packaging.
Return procedure for JANS1N6128AUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N6128AUS/TR Tags
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