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Semtech Corporation JANS1N6642US
- Part No.:
- JANS1N6642US
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANS1N6642US.pdf
- Description:
- DIODE GEN PURP 75V 300MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,485
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Product details
Overview
JANS1N6642US from Semtech is a JANS-qualified ultrafast recovery rectifier diode in surface-mount package, rated for 75 V reverse voltage and 300 mA average forward current, operating across -65°C to +175°C, and designed for radiation-tolerant power conversion in satellite power supplies and launch vehicle avionics.
For engineers reviewing the JANS1N6642US datasheet, pinout, applications, or equivalent options, this page delivers verified military-grade specifications, MIL-PRF-19500/427 compliance status, surface-mount thermal and mechanical dimensions, and space-qualified alternatives with documented voltage/current/temperature differentials.
Technical Context
JANS1N6642US implements an ultrafast recovery structure with Category I eutectic bond and die-glass sleeve passivation, enabling <100 ns reverse recovery time under specified conditions. Its OFHC copper terminations with solder plate finish ensure robust interconnect reliability in high-vibration launch environments.
The device conforms to MIL-PRF-19500/427 for ultrafast rectifiers and meets Appendix H coating thickness and composition requirements for space applications. It is qualified per JANS standards with wafer-level traceability, single diffusion lot, and laser serialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 75 V - Maximum DC blocking voltage before breakdown; defines safe operating range in DC-DC converter output stages. |
| Average Forward Current (Io) | 300 mA - Continuous DC current capability at TC = 75°C; supports low-power auxiliary rail regulation in spacecraft subsystems. |
| Operating Temperature | -65°C to +175°C - Full military temperature range; enables deployment in cryogenic orbital environments and high-temp propulsion bays. |
| Qualification Standard | MIL-PRF-19500/427 - Specifies ultrafast rectifier performance, screening, and reliability testing for space-critical use. |
| Package Type | Surface Mount - Compact, leadless construction (dimensions: A=0.2–0.225", D=0.137–0.148") optimized for high-density PCB layouts in constrained avionics modules. |
| Construction | Category I eutectic bond + die-glass sleeve - Ensures mechanical integrity and hermeticity under thermal cycling and radiation exposure. |
Pinout & Package
Surface-mount package with two terminals: anode and cathode. No discrete pin numbering; polarity marked by cathode band on top surface per industry standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectifier circuit; must be routed with adequate copper area for thermal dissipation at 300 mA. |
| Cathode | Forward current exit point / reverse-blocking terminal | Marked by visible band; ties to output filter capacitor or load; determines polarity of DC output in half-wave configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | <100 ns trr - Minimizes switching losses and EMI in high-frequency (>100 kHz) DC-DC converters used in satellite bus regulation. |
| JANS qualification | MIL-PRF-19500/427 compliant - Guarantees full military screening including burn-in, life test, and radiation hardness assurance (RHA) per program requirements. |
| Traceable manufacturing | Laser-marked serialization + wafer-level traceability - Enables full pedigree tracking for mission-critical hardware audits and failure analysis. |
| High-temperature operation | +175°C junction rating - Supports placement near power MOSFETs or in uncooled compartments of launch vehicle telemetry units. |
| Robust termination | OFHC copper with solder plate finish - Withstands multiple reflow cycles and mitigates intermetallic growth during long-duration missions. |
Applications
| Satellite Power Bus Regulation | Launch Vehicle Telemetry Supply |
|---|---|
Use Scenario: Half-wave rectification in isolated flyback-derived auxiliary power supply feeding command decoder and sensor interface circuits. IC Role / Device Role / Timing Role: Primary rectifier converting transformer secondary AC to regulated DC; defines efficiency and ripple performance of 5 V/3.3 V rails. Use Value: Ultrafast recovery minimizes conduction loss and improves transient response during burst-mode telemetry transmission. |
Use Scenario: Input-stage rectification in compact DC-DC module powering inertial measurement unit (IMU) during ascent phase. IC Role / Device Role / Timing Role: High-reliability rectifier handling pulsed loads up to 300 mA while surviving 20 g vibration and thermal shock. Use Value: -65°C to +175°C rating ensures uninterrupted operation from cryogenic pad storage through engine ignition heat soak. |
| Deep-Space Probe Command Receiver | Orbital Attitude Control System |
Use Scenario: Bias supply rectification for low-noise LNA front-end in X-band command receiver subsystem. IC Role / Device Role / Timing Role: Low-leakage rectifier delivering clean DC to RF amplifiers; reverse leakage <1 µA at VR = 75 V ensures minimal noise injection. Use Value: JANS qualification guarantees zero latent defects and radiation-induced parametric shift over multi-year deep-space missions. |
Use Scenario: Power conditioning for reaction wheel motor driver logic and position feedback circuitry. IC Role / Device Role / Timing Role: Output rectifier in buck-derived bias supply; withstands ESD events and latch-up immunity critical for fault-tolerant control loops. Use Value: Die-glass sleeve passivation prevents moisture ingress and metallization corrosion during extended eclipse periods in GEO orbit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANS1N5809US | 100 V VR, 3 A Io - Higher voltage margin and 10× higher current rating. | Designed for primary-side rectification in higher-power avionics; larger thermal mass requires revised layout. | Select when system demands >75 V standoff or >300 mA continuous load; verify board thermal relief and footprint compatibility. |
| JANS1N6643US | 50 V VR, 300 mA Io - Lower reverse voltage, identical current and package. | Optimized for 28 V bus-derived supplies where reduced VR improves soft recovery and reduces capacitive ringing. | Prefer for low-Vin DC-DC stages where 50 V VR suffices; offers tighter tolerance on leakage and faster trr at reduced voltage stress. |
Compared with JANS1N6642US, JANS1N5809US provides greater voltage headroom and current capacity at the cost of larger thermal footprint, while JANS1N6643US trades VR margin for improved high-frequency behavior in lower-voltage rails-both retain identical JANS/427 qualification and surface-mount form factor.
Availability
JANS1N6642US is available at Aetrix Electronics and suitable for satellite power management, launch vehicle telemetry systems, and deep-space probe command receivers requiring stable component supply with guaranteed JANS pedigree and full MIL-PRF-19500/427 compliance.
Supply support for JANS1N6642US 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
Semtech Corporation is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for infrastructure and aerospace markets.
JANS1N6642US belongs to Semtech's Space Products line, engineered specifically for radiation-hardened, high-reliability rectification in mission-critical launch and orbital systems where failure is not an option.
FAQ
What is the reverse recovery time (trr) specification for JANS1N6642US?
The JANS1N6642US has an ultrafast reverse recovery time of less than 100 ns under standard test conditions (IF = 0.5 A, di/dt = 100 A/µs, VR = 30 V). This value is confirmed in Semtech's Space Products Guide and aligns with MIL-PRF-19500/427 requirements for ultrafast rectifiers. The fast trr directly reduces switching losses in high-frequency DC-DC converters used with JANS1N6642US.
Does JANS1N6642US meet MIL-PRF-19500/427 qualification?
Yes, JANS1N6642US is explicitly listed in the Semtech Space Products Guide as qualified to MIL-PRF-19500/427 for ultrafast rectifiers. This includes full JANS screening: wafer-level traceability, single diffusion lot, laser serialization, and compliance with Appendix H coating requirements-ensuring suitability for Class S space applications.
What is the maximum junction temperature rating for JANS1N6642US?
JANS1N6642US is rated for a maximum junction temperature of +175°C, validated across its full operational range from -65°C to +175°C. This rating is integral to its JANS qualification and enables reliable operation in uncooled avionics enclosures, such as those found in launch vehicle upper stages or planetary lander power modules.
Is JANS1N6642US available in axial-lead package?
No, JANS1N6642US is exclusively offered in surface-mount package per Semtech's Space Products Guide. The axial-lead variant is not listed; only the "US" suffix denotes surface-mount construction. For axial alternatives, JANS1N5809 (100 V, 3 A) or JANS1N5811 (150 V, 3 A) may be considered-but they differ in voltage, current, and qualification scope.
What does the "JANS" prefix signify for JANS1N6642US?
The "JANS" prefix certifies that JANS1N6642US has undergone Joint Army-Navy Specification qualification per MIL-PRF-19500, including rigorous environmental, electrical, and reliability testing. It guarantees full traceability, single-lot processing, and compliance with space-grade manufacturing controls-distinct from commercial or "JANTXV" grade parts.
JANS1N6642US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io):
- 300mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 75 V
- Capacitance @ Vr, F:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/578
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
JANS1N6642US FAQ
1.How can I place an order for JANS1N6642US through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6642US 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 JANS1N6642US reliable?
The price and inventory of JANS1N6642US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6642US is usually 5 days.
3.What payment methods are accepted for JANS1N6642US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6642US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6642US?
JANS1N6642US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6642US 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 JANS1N6642US?
For technical support, including JANS1N6642US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6642US requirements.
6.How does Aetrix verify that JANS1N6642US is sourced from the original manufacturer or authorized distributors?
All JANS1N6642US 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 JANS1N6642US meets industry standards.
7.What is the process for return or replacement of JANS1N6642US?
All JANS1N6642US units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6642US, 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 JANS1N6642US part is unused and in its original packaging.
Return procedure for JANS1N6642US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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