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Microchip Technology 1N5640A/TR
- Part No.:
- 1N5640A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
1N5640A/TR.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:8,351
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Product details
Overview
1N5640A/TR 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/TR datasheet, 1N5640A/TR pinout, 1N5640A/TR application, or 1N5640A/TR equivalent, this device is selected for secondary lightning protection per IEC61000-4-5 (with 2 Ω, 12 Ω, or 42 Ω source impedance), ESD/EFT immunity per IEC61000-4-2/-4-4, and fast-clamp (<100 ps) protection of DC power rails and signal lines in harsh electromagnetic environments.
Technical Context
The 1N5640A/TR 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 fast-rising transients from inductive switching, RF coupling, and secondary lightning surges. Standby leakage remains ≤5 µA at 17.1 V, supporting low-power system monitoring without loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff Voltage) | 17.1 V - Maximum continuous reverse voltage before significant leakage; sets minimum operating rail voltage compatibility. |
| V(BR) @ I(BR) | 19.0–21.0 V @ 1 mA - Breakdown onset range; defines precise clamping initiation threshold under standardized test current. |
| VC @ IPP | 27.7 V @ 54 A - Maximum clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by protected ICs. |
| PPP | 1500 W - Peak pulse power handling capability; enables robust protection against high-energy transients without failure. |
| ID @ VWM | ≤5 µA - Reverse leakage at rated standoff; ensures minimal power loss and no interference with low-current sensing circuits. |
| Response Time | <100 ps - Avalanche turn-on speed; guarantees suppression before sensitive logic or analog stages are damaged. |
| Operating Temp | -55°C to +175°C - Full military-grade thermal range; supports deployment in engine bays, avionics bays, and downhole equipment. |
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, weight ≈1.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point | Connected to protected line; carries full surge current into avalanche junction during clamping event. |
| Cathode (Lead 1 / Case) | Reference and return path | Electrically tied to metal case; must be connected to system ground or low-impedance reference plane for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Protects only reverse-polarity transients on DC rails; avoids forward conduction issues in power supply inputs. |
| Hermetic DO-13 metal package | Eliminates moisture ingress and long-term parameter drift; certified for MIL-PRF-19500/500 JANTXV qualification. |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy surges common in aircraft power distribution and industrial motor drives without degradation. |
| IEC61000-4-5 compliance (2/12/42 Ω source) | Validated for Class 1–4 secondary lightning protection across multiple source impedances-no redesign needed for platform variants. |
| Inherent radiation hardness | Qualified per Microsemi MicroNote 050; suitable for space-qualified subsystems and nuclear instrumentation without additional shielding. |
Applications
| Aerospace Power Distribution | Avionics Signal Line Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus in commercial aircraft auxiliary power units from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between bus and ground to shunt transients exceeding 17.1 V. Use Value: Prevents latch-up or burnout in upstream DC-DC converters and downstream flight control sensors during rapid bus voltage excursions. |
Use Scenario: Shielding ARINC 429 data receivers from induced RF and ESD events on airborne communication harnesses. IC Role / Device Role / Timing Role: Low-leakage TVS mounted at connector interface to clamp fast transients before signal conditioning circuitry. Use Value: Maintains bit error rate integrity under IEC61000-4-2 ±8 kV contact discharge while adding <0.5 pF parasitic capacitance. |
| Industrial Motor Drive Control | Military Vehicle Power Systems |
Use Scenario: Safeguarding gate drivers and current sense amplifiers in 48 V traction inverters subjected to PWM-induced ringing. IC Role / Device Role / Timing Role: Fast-response TVS on isolated DC link monitoring nodes to absorb repetitive 100 ns–1 µs spikes. Use Value: Enables reliable operation at 175°C ambient without derating, eliminating thermal shutdown during sustained overload conditions. |
Use Scenario: Hardening 24 V vehicle battery interfaces against ISO 7637-2 pulse 1/2a/5a and MIL-STD-1275B transients. IC Role / Device Role / Timing Role: Primary surge suppressor on main power input, leveraging hermetic seal for humidity resistance in armored vehicle enclosures. Use Value: Survives 500+ surge events at 1500 W without parameter shift-critical for mission-critical C4ISR electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ17A | Surface-mount SMC package; same VWM (17 V), but VC = 27.6 V @ 54.3 A; lower thermal resistance (junction-to-ambient). | Designed for automated PCB assembly; lacks hermetic seal and radiation hardness; not qualified to MIL-PRF-19500. | Select for cost-sensitive, high-volume industrial designs where reflow compatibility and board space are prioritized over extreme environment reliability. |
| 1N5640A (bulk) | Identical electrical specs and DO-13 package; differs only in packaging format (tape-and-reel vs. bulk). | No functional difference; TR suffix denotes EIA-296 tape-and-reel delivery for pick-and-place use. | Choose 1N5640A/TR when integrating into automated manufacturing lines requiring reel-fed placement; otherwise, 1N5640A bulk is functionally identical. |
Compared with SMCJ17A, the 1N5640A/TR offers superior environmental ruggedness and radiation tolerance but requires through-hole assembly; compared with 1N5640A bulk, the TR variant enables SMT production without altering circuit design or layout.
Availability
1N5640A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, avionics signal line protection, and industrial motor drive control requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for 1N5640A/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
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/TR belongs to Microchip's legacy JAN/JANTXV-qualified TVS diode family, engineered specifically for mission-critical surge protection in environments where hermetic sealing, wide temperature operation, and radiation immunity are mandatory.
FAQ
What is the clamping voltage of the 1N5640A/TR under a 10/1000 µs surge?
The 1N5640A/TR 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 the full operating temperature range and forms the basis for downstream circuit overvoltage margining.
Is the 1N5640A/TR suitable for IEC61000-4-5 secondary lightning protection?
Yes, the 1N5640A/TR is explicitly validated for IEC61000-4-5 secondary lightning protection across multiple source impedances: it supports Class 1–4 testing with 42 Ω, 12 Ω, and 2 Ω source networks as documented in the official datasheet. Its 1500 W rating and sub-100 ps response ensure compliance without external circuit augmentation.
Does the 1N5640A/TR have military qualification?
The 1N5640A/TR is the tape-and-reel version of the JANTXV-qualified 1N5640A. While the "TR" suffix denotes packaging format, the underlying die and DO-13 construction meet MIL-PRF-19500/500 requirements for JANTXV level when ordered with appropriate prefix (e.g., JANTXV1N5640A). The TR variant retains full qualification.
What is the thermal resistance of the 1N5640A/TR?
The 1N5640A/TR has a junction-to-lead thermal resistance (RθJL) of 50°C/W when measured at 0.375 inches (10 mm) from the case body. When mounted on an FR4 PCB with 4 mm² copper pads (1 oz), its junction-to-ambient resistance (RθJA) is 110°C/W-critical for thermal design in high-temperature avionics enclosures.
How does the "A" suffix in 1N5640A/TR affect its specifications?
The "A" suffix denotes tighter parametric tolerances per the 1N5629A–1N5665A series: for the 1N5640A/TR, this means a V(BR) range of 19.0–21.0 V (vs. 18.0–22.0 V for non-A versions) and guaranteed VC ≤27.7 V. All other electrical, mechanical, and environmental specs remain identical to the base series.
1N5640A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-13
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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/TR FAQ
1.How can I place an order for 1N5640A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5640A/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 1N5640A/TR reliable?
The price and inventory of 1N5640A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5640A/TR is usually 5 days.
3.What payment methods are accepted for 1N5640A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5640A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5640A/TR?
1N5640A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5640A/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 1N5640A/TR?
For technical support, including 1N5640A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5640A/TR requirements.
6.How does Aetrix verify that 1N5640A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5640A/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 1N5640A/TR meets industry standards.
7.What is the process for return or replacement of 1N5640A/TR?
All 1N5640A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5640A/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 1N5640A/TR part is unused and in its original packaging.
Return procedure for 1N5640A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5640A/TR Tags
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