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Microchip Technology 1N5640A
- Part No.:
- 1N5640A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
1N5640A.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:6,071
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Product details
Overview
1N5640A from Microchip Technology is a unidirectional transient voltage suppressor (TVS) diode in a hermetically sealed DO-13 metal package, designed for high-reliability surge protection in aerospace, avionics, and industrial systems. It features a 17.1 V rated standoff voltage (VWM), 19.0 V minimum breakdown voltage (V(BR)), 27.7 V maximum clamping voltage (VC) at 54 A peak pulse current (IPP), and 1500 W peak pulse power rating at 10/1000 µs waveform.
For engineers reviewing the 1N5640A datasheet, 1N5640A pinout, 1N5640A application, or 1N5640A equivalent, this device is selected for secondary lightning protection per IEC61000-4-5 (with 42 Ω, 12 Ω, or 2 Ω source impedance), ESD/EFT immunity per IEC61000-4-2/-4, and fast-clamp (<100 ps) protection of sensitive analog/digital interfaces in harsh electromagnetic environments.
Technical Context
The 1N5640A operates as a unidirectional avalanche diode, entering controlled breakdown when transient voltage exceeds its V(BR) threshold to clamp downstream circuitry. Its hermetic DO-13 package ensures stable performance across -55°C to +175°C operating temperature range and inherent radiation hardness per MicroNote 050.
It delivers 1500 W non-repetitive peak pulse power with <100 ps response time, enabling protection against inductive switching transients, induced RF, and secondary lightning surges. Standby leakage current is limited to 5 µA at 17.1 V VWM, supporting low-power system integrity during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.1 V - Maximum continuous reverse operating voltage before conduction; sets minimum system bus voltage compatibility. |
| V(BR) min | 19.0 V @ 1 mA - Guaranteed avalanche initiation threshold; defines minimum overvoltage trip point. |
| VC @ IPP | 27.7 V @ 54 A - Peak clamped voltage during 10/1000 µs surge; determines maximum stress on protected ICs. |
| PPP | 1500 W - Peak pulse power handling capability; enables robust protection against MIL-STD-1275/DO-160 transients. |
| ID @ VWM | 5 µA - Reverse leakage at rated standoff voltage; ensures minimal standby power loss and signal integrity. |
| Response time | <100 ps - Time from transient onset to clamping action; prevents damage to high-speed logic and ADC inputs. |
| Operating temp | -55°C to +175°C - Full military-grade thermal range; supports engine bay, avionics bay, and downhole electronics. |
Pinout & Package
Package: DO-13 (DO-202AA), hermetically sealed metal-glass case with cathode connected to case and polarity marked by diode symbol. Tin-lead plated leads compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry node | Connected to protected line (e.g., RS-485 bus, sensor input); carries full surge current into device. |
| Cathode | Clamped output / ground reference | Internally bonded to metal case; must be connected to low-impedance system ground for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables DC-biased line protection (e.g., power rails, serial buses) without forward-conduction interference. |
| Hermetic DO-13 metal package | Provides long-term reliability in high-humidity, high-vibration, and radiation-exposed environments (e.g., flight control systems). |
| 1500 W peak pulse power | Meets IEC61000-4-5 Class 4 (42 Ω source) and MIL-STD-1275E surge requirements without derating. |
| <100 ps response time | Clamps transients before propagation into microcontroller GPIOs or analog front-ends, preventing latch-up or parametric shift. |
| MIL-PRF-19500/500 qualified "A" suffix | Guarantees tighter V(BR) tolerance and screening for JANTXV-level reliability in defense and space programs. |
Applications
| Aerospace Avionics Power Bus Protection | Industrial Motor Drive Control Signal Lines |
|---|---|
Use Scenario: Protecting 28 V DC power distribution networks in aircraft flight control computers from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between bus and chassis ground to shunt transients exceeding 17.1 V. Use Value: Limits bus voltage to ≤27.7 V during 54 A surges, preserving integrity of downstream DC-DC converters and FPGAs. |
Use Scenario: Shielding isolated encoder feedback lines (e.g., RS-422) in servo drives from EFT bursts and motor commutation noise. IC Role / Device Role / Timing Role: Fast-response TVS mounted at connector interface to clamp sub-100 ns edge-induced spikes before reaching isolation barrier. Use Value: Prevents false triggering of position counters and maintains ±0.01° angular accuracy under IEC61000-4-4 Level 4 stress. |
| Railway Signaling Data Interfaces | Defense Vehicle CAN Bus Nodes |
Use Scenario: Securing track-side interlocking system Ethernet PHYs against lightning-induced surges coupled via long outdoor cabling. IC Role / Device Role / Timing Role: Primary protection stage ahead of GDT/gas tube secondary stage; absorbs initial 1500 W energy pulse. Use Value: Enables compliance with EN 50121-4 for secondary lightning (IEC61000-4-5, 42 Ω source, Class 4) without signal distortion. |
Use Scenario: Hardening CAN_H/CAN_L nodes in armored vehicle communication modules against ESD (±15 kV contact) and conducted transients. IC Role / Device Role / Timing Role: Unidirectional TVS on each CAN line referenced to chassis ground, leveraging DO-13's radiation hardness. Use Value: Maintains CAN FD bit timing integrity up to 5 Mbps during repeated ±8 kV IEC61000-4-2 discharges with zero frame loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5640 | Commercial-grade version with wider V(BR) tolerance (18.0–19.8 V vs. 19.0–21.0 V); no MIL-PRF-19500 screening. | Lacks JANTXV qualification; unsuitable for defense/aerospace programs requiring traceable lot data and burn-in. | Select 1N5640 only for cost-sensitive industrial designs where radiation hardness and extended temperature validation are not required. |
| SMBJ17A | Surface-mount SMB package; same VWM (17 V) but lower PPP (600 W); clamps at 27.7 V @ 21.5 A. | Not hermetically sealed; unsuitable for high-humidity or vacuum environments; requires PCB layout change. | Choose SMBJ17A only for space-constrained consumer or telecom applications where DO-13 through-hole mounting is impractical. |
Compared with 1N5640 and SMBJ17A, the 1N5640A uniquely combines military-grade screening, hermetic sealing, 1500 W surge capacity, and ultrafast response-making it the sole option for avionics power bus and DO-160 Section 22 Zone 1 deployments.
Availability
1N5640A is available at Aetrix Electronics and suitable for aerospace avionics, railway signaling, defense vehicle electronics, and industrial motor drive systems requiring stable component supply across extended product lifecycles.
Supply support for 1N5640A 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
Microchip Technology (formerly Microsemi) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N5640A belongs to Microchip's legacy JAN/JANTXV TVS diode family, engineered specifically for mission-critical surge protection in environments where failure is not an option-including flight control, weapon systems, and nuclear instrumentation.
FAQ
What is the clamping voltage of the 1N5640A under a 10/1000 µs surge?
The 1N5640A exhibits a maximum clamping voltage (VC) of 27.7 V when subjected to its rated 54 A peak pulse current (IPP) under the standard 10/1000 µs double-exponential waveform. This value is guaranteed across temperature and represents the highest voltage seen across the device during surge conduction, directly limiting stress on downstream circuitry.
Is the 1N5640A suitable for bidirectional signal line protection?
No, the 1N5640A is a unidirectional TVS diode and conducts only in reverse breakdown. For bidirectional protection (e.g., AC-coupled data lines), Microchip offers the complementary 1N6036–1N6072A series in the same DO-13 package. Using 1N5640A on bidirectional lines risks forward conduction and potential damage during normal signal swings.
Does the 1N5640A require a heatsink for continuous operation?
No heatsink is required for the 1N5640A during transient suppression, as it is not intended for continuous DC power dissipation. Its 1 W steady-state rating applies only at lead temperature ≤125°C with 3/8″ lead length; normal use relies on short-duration avalanche conduction, not thermal steady state.
How does the 1N5640A achieve radiation hardness?
The 1N5640A achieves inherent radiation hardness through its hermetic DO-13 metal-glass package and optimized silicon process, validated per Microsemi MicroNote 050. This design mitigates total ionizing dose (TID) effects and single-event burnout (SEB) susceptibility, making it suitable for low-earth orbit avionics and nuclear facility instrumentation where 1N5640A exposure to gamma or neutron flux is expected.
Can the 1N5640A replace the 1N5640 in an existing JANTXV-designated design?
Yes-the 1N5640A is the qualified military variant of the 1N5640, with tighter V(BR) tolerance (19.0–21.0 V vs. 18.0–19.8 V), full MIL-PRF-19500/500 screening, and traceable lot documentation. Substituting 1N5640A for 1N5640 in JANTXV designs maintains or improves compliance without layout or schematic changes.
1N5640A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-13
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-13
1N5640A FAQ
1.How can I place an order for 1N5640A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5640A 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 1N5640A reliable?
The price and inventory of 1N5640A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5640A is usually 5 days.
3.What payment methods are accepted for 1N5640A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5640A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5640A?
1N5640A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5640A 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 1N5640A?
For technical support, including 1N5640A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5640A requirements.
6.How does Aetrix verify that 1N5640A is sourced from the original manufacturer or authorized distributors?
All 1N5640A 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 1N5640A meets industry standards.
7.What is the process for return or replacement of 1N5640A?
All 1N5640A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5640A, 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 1N5640A part is unused and in its original packaging.
Return procedure for 1N5640A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5640A Tags
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