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Microchip Technology JANTX1N5419US/TR
- Part No.:
- JANTX1N5419US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
JANTX1N5419US/TR.pdf
- Description:
- UFR,FRR
- Quantity:
- Payment:
- Shipping:
Inventory:4,193
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Product details
Overview
JANTX1N5419US/TR from Microsemi is a military-qualified, voidless-hermetically sealed surface-mount fast recovery glass rectifier diode rated for 3 A average forward current, 500 V working peak reverse voltage (VRWM), and 250 ns reverse recovery time (trr), deployed in high-reliability power conversion stages of avionics power supplies and radiation-hardened DC/DC converters.
For engineers reviewing the JANTX1N5419US/TR datasheet, JANTX1N5419US/TR pinout, JANTX1N5419US/TR application, or JANTX1N5419US/TR equivalent, key selection criteria include its Category 1 metallurgical bond integrity, 80 A surge rating at 8.3 ms, -65°C to +175°C junction temperature range, and hermetic D-5B (SQ-MELF) package suited for mission-critical rectification where failure is not tolerable.
Technical Context
This device belongs to the MIL-PRF-19500/411-qualified 1N5415US–1N5420US series, with JANTX-level reliability screening. It uses a tungsten-slug glass encapsulation with quadruple-layer passivation and copper end caps with Sn/Pb finish, enabling stable operation under thermal cycling and radiation exposure.
Its 500 V VRWM and 250 ns trr balance voltage hold-off and switching speed for medium-frequency rectification. The 6.5°C/W junction-to-end-cap thermal resistance supports high-power dissipation without external heatsinking in constrained board layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 500 V - Maximum continuous reverse voltage before breakdown; defines safe operating margin in 400 V DC bus applications. |
| trr | 250 ns - Measured at IF = 0.5 A, IRM = 1 A; enables use in 20–50 kHz SMPS output rectification with low switching loss. |
| IF(AV) | 3 A @ TA = +55°C - Sustained forward current capability on standard FR-4 PCB; derates linearly to 2 A at +100°C. |
| VF | 1.5 V @ 9 A - Forward voltage drop at high transient load; impacts conduction loss and thermal rise during surge events. |
| RθJEC | 6.5°C/W - Junction-to-end-cap thermal resistance; allows direct thermal coupling to metal chassis or heat-spreader pads. |
| TJ Range | -65°C to +175°C - Full military temperature range; validated for operation in spacecraft power systems and jet engine controllers. |
Pinout & Package
Package: Hermetically sealed voidless glass SQ-MELF "B" package (D-5B), 0.288" diameter × 0.070" height, with copper end caps and cathode band marking. Weight: 539 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (End Cap) | Forward current entry point | Electrically connected to tungsten slug; serves as primary thermal path to PCB pad or chassis mount. |
| Cathode (End Cap w/ Band) | Forward current exit / reverse blocking terminal | Marked with black cathode band; tin/lead finish ensures solderability and intermetallic stability under thermal stress. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and particle migration; certified for >10,000 hr life in 85°C/85% RH accelerated testing. |
| Category 1 metallurgical bond | Gold-tungsten interface between die and slug ensures <1×10⁻⁸ Ω·cm² contact resistance and zero bond lift under 1000 g shock. |
| Controlled avalanche capability | Rated for peak reverse power transients up to 100 W for 10 µs; protects downstream FETs during inductive flyback events. |
| Inherent radiation hardness | Qualified per MicroNote 050: exhibits <1 krad(Si) TID tolerance and no single-event latchup up to 80 MeV·cm²/mg LET. |
Applications
| Aerospace Power Distribution | Rad-Hard DC/DC Converters |
|---|---|
Use Scenario: Rectification in 28 V DC input stage of satellite bus power conditioner with 50 kHz PWM control. IC Role / Device Role / Timing Role: Fast recovery rectifier in synchronous buck secondary side; handles 3 A continuous and 80 A surge during fault clearing. Use Value: 250 ns trr minimizes reverse recovery charge (Qrr ≈ 20 nC), reducing MOSFET turn-on loss and EMI generation. |
Use Scenario: Output rectification in radiation-tolerant 48 V → 3.3 V isolated flyback converter for onboard computer power rails. IC Role / Device Role / Timing Role: Primary unidirectional current path with controlled avalanche clamping during transformer leakage spikes. Use Value: Hermetic D-5B package prevents parametric drift under 100 krad(Si) total ionizing dose exposure. |
| Military Vehicle Power Systems | High-Reliability Bridge Rectifiers |
Use Scenario: Input rectification in 270 V DC aircraft starter-generator interface module operating at -55°C ambient. IC Role / Device Role / Timing Role: High-voltage AC-to-DC conversion element with guaranteed conduction down to -65°C junction temperature. Use Value: -65°C to +175°C TJ range ensures startup reliability in arctic-deployed UAVs without preheating. |
Use Scenario: Single-phase full-wave bridge assembly using four JANTX1N5419US/TR diodes in compact MELF layout. IC Role / Device Role / Timing Role: Discrete rectifier element in space-constrained bridge with shared thermal mass across all four devices. Use Value: Identical 6.5°C/W RθJEC enables balanced thermal sharing and eliminates hot-spot skew in parallel operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VMI JANTXV1N5419US | JANTXV qualification level; tighter parametric screening (e.g., 100% trr ≤ 225 ns vs. 250 ns typical), lower IR at 100°C. | Required for Class H (high-reliability) DoD programs demanding extended burn-in and lot traceability. | Select when program spec mandates JANTXV-level screening or requires <225 ns trr guarantee. |
| ON Semiconductor MUR360G | Commercial-grade TO-220AC package; 600 V VRWM, 35 ns trr, but non-hermetic plastic body and -65°C to +150°C TJ range. | Suitable for industrial SMPS where cost and speed outweigh radiation tolerance and extreme temperature needs. | Choose only for non-military, non-space applications requiring faster recovery and lower VF, accepting reduced environmental robustness. |
Compared with JANTX1N5419US/TR, the JANTXV variant offers tighter parametric control for mission-critical deployment, while the MUR360G trades hermeticity and temperature range for higher speed and lower cost in commercial environments.
Availability
JANTX1N5419US/TR is available at Aetrix Electronics and suitable for aerospace power distribution, rad-hard DC/DC converters, military vehicle power systems, and high-reliability bridge rectifiers requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N5419US/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 defense, aerospace, and industrial markets, with emphasis on radiation-hardened and hermetically sealed components.
The JANTX1N5419US/TR belongs to Microsemi's military-qualified rectifier family engineered specifically for failure-intolerant power conversion in avionics, missile guidance, and satellite subsystems.
FAQ
What is the maximum allowable junction temperature for JANTX1N5419US/TR?
The JANTX1N5419US/TR has a specified junction temperature range of -65°C to +175°C. This maximum rating is validated per MIL-PRF-19500/411 and applies under steady-state and transient conditions when mounted per recommended pad layout. Operation beyond +175°C risks irreversible metallurgical degradation of the Category 1 bond.
Is JANTX1N5419US/TR RoHS compliant?
No, JANTX1N5419US/TR is not RoHS compliant. Its end caps use tin/lead (Sn/Pb) finish, consistent with MIL-PRF-19500/411 requirements for JANTX-level devices. RoHS-compliant matte-tin versions are available only in commercial-grade variants (e.g., 1N5419US with e3 suffix), not in JANTX-qualified parts.
What does the "TR" suffix indicate in JANTX1N5419US/TR?
The "TR" suffix denotes tape-and-reel packaging per EIA-481-B standard. JANTX1N5419US/TR is supplied in 12 mm carrier tape with 1,000 units per reel, optimized for automated SMT placement. This differs from bulk or ammo-pack versions used in manual or semi-automated assembly.
How is the cathode identified on JANTX1N5419US/TR?
The cathode of JANTX1N5419US/TR is marked by a single black band on the glass body, aligned with the cathode end cap. Polarity is unambiguous: the banded end is cathode; the opposite end cap is anode. No alphanumeric marking is applied-only the band serves as polarity indicator per MIL-PRF-19500/411.
Can JANTX1N5419US/TR be used in place of JANTX1N5420US in a 600 V design?
No. JANTX1N5419US/TR has a VRWM of 500 V, while JANTX1N5420US is rated for 600 V. Substituting JANTX1N5419US/TR in a 600 V application violates its maximum reverse voltage rating and risks premature breakdown. The 500 V rating provides only 17% safety margin over 425 V peak line voltage, insufficient for 600 V system requirements.
JANTX1N5419US/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, B
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 500 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 9 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 500 V
- Capacitance @ Vr, F:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/411
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- B, SQ-MELF
- Operating Temperature - Junction:
- -65°C ~ 175°C
JANTX1N5419US/TR FAQ
1.How can I place an order for JANTX1N5419US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5419US/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 JANTX1N5419US/TR reliable?
The price and inventory of JANTX1N5419US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5419US/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N5419US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5419US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5419US/TR?
JANTX1N5419US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5419US/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 JANTX1N5419US/TR?
For technical support, including JANTX1N5419US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5419US/TR requirements.
6.How does Aetrix verify that JANTX1N5419US/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N5419US/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 JANTX1N5419US/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N5419US/TR?
All JANTX1N5419US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5419US/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 JANTX1N5419US/TR part is unused and in its original packaging.
Return procedure for JANTX1N5419US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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