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Microchip Technology 1N5650A/TR
- Part No.:
- 1N5650A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
1N5650A/TR.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:5,751
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Product details
Overview
1N5650A/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 41.3 V minimum breakdown voltage (VBR), 43.6 V rated standoff voltage (VWM), 70.1 V maximum clamping voltage (VC) at 21.4 A peak pulse current (IPP), and 1500 W peak pulse power (10/1000 µs). It is commonly deployed to protect DC power rails and signal lines against ESD, EFT, and secondary lightning surges per IEC61000-4-2, -4-4, and -4-5.
For engineers reviewing the 1N5650A/TR datasheet, 1N5650A/TR pinout, 1N5650A/TR application, or 1N5650A/TR equivalent, this device serves as a military-grade, through-hole TVS with sub-100 ps response time, hermetic DO-13 packaging, and validated performance under −55 °C to +175 °C operating temperature range - critical for flight-critical and high-reliability embedded power interface design.
Technical Context
The 1N5650A/TR operates as a unidirectional avalanche diode, entering controlled breakdown when transient voltage exceeds its 41.3–45.9 V VBR range at 1 mA test current. Its clamping action limits induced surge voltages to ≤70.1 V while conducting up to 21.4 A (10/1000 µs waveform), delivering 1500 W peak pulse power without degradation.
It uses a welded, hermetically sealed DO-13 (DO-202AA) metal-glass package with cathode connected to case, enabling robust thermal conduction (50 °C/W junction-to-lead) and radiation hardness per MicroNote 050. The "A" suffix denotes tighter tolerance on VBR, and "TR" indicates tape-and-reel packaging per EIA-296.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets upper limit for protected circuit's steady-state DC rail. |
| VBR @ IBR | 41.3–45.9 V @ 1 mA - Tighter-tolerance breakdown threshold ensures predictable turn-on across temperature and life cycle. |
| VC @ IPP | 70.1 V @ 21.4 A - Clamped voltage during full 1500 W surge; defines worst-case overvoltage seen by downstream ICs. |
| Peak Pulse Power | 1500 W (10/1000 µs) - Sustains high-energy transients common in inductive switching and lightning-induced surges. |
| Response Time | <100 ps - Enables effective suppression of ESD events (IEC61000-4-2) and fast-rising EFT bursts (IEC61000-4-4). |
| Operating Temp | −55 °C to +175 °C - Supports deployment in engine bays, avionics bays, and downhole industrial environments. |
| Package | DO-13 (DO-202AA), hermetically sealed metal-glass - Provides superior moisture resistance, thermal stability, and radiation tolerance vs. plastic packages. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically bonded to case and marked with diode symbol on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point | Connected to protected line; conducts surge current toward cathode/case during avalanche. |
| Cathode (Lead 1 / Case) | Transient current return path | Internally tied to metal case; must be connected to system ground or low-impedance return plane for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Protects DC-biased lines only in reverse direction; avoids forward conduction during normal operation. |
| Hermetic DO-13 metal package | Eliminates moisture ingress and outgassing risks; certified for aerospace and MIL-PRF-19500/500 JANTXV qualification. |
| 1500 W peak pulse rating | Handles high-energy transients from relay coil collapse, motor commutation, or Class 4 secondary lightning (IEC61000-4-5, 2 Ω source). |
| Sub-100 ps response time | Clamps ESD events before sensitive CMOS inputs reach destructive voltage thresholds. |
| Tape-and-reel (TR) packaging | Enables automated through-hole insertion; complies with EIA-296 standard for reel dimensions and orientation. |
Applications
| Aerospace Avionics Power Bus Protection | Industrial Motor Drive Control Signal Lines |
|---|---|
Use Scenario: Protecting 28 V DC power distribution networks in airborne navigation computers from load dump and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to shunt transients exceeding 43.6 V. Use Value: Prevents latch-up or burnout in FPGAs and ADCs by limiting surge voltage to ≤70.1 V during 21.4 A, 1500 W events. |
Use Scenario: Safeguarding isolated encoder feedback signals in servo drives exposed to commutation noise and ground bounce. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb fast-rising EFT bursts (IEC61000-4-4) on differential RS-422 lines. Use Value: Maintains signal integrity by clamping transients within 100 ps, avoiding false edge detection in position controllers. |
| Military Vehicle Onboard Electronics | Downhole Oilfield Sensor Modules |
Use Scenario: Shielding CAN bus transceivers and microcontrollers in armored vehicle ECUs from ignition system coupling and EMP-like transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on VCC and CAN_H/CAN_L lines, leveraging −55 °C to +175 °C operation. Use Value: Ensures mission continuity by surviving repeated 1500 W surges without parameter drift or hermetic seal failure. |
Use Scenario: Protecting pressure and temperature sensor front-ends in high-temperature drilling tools subjected to cable discharge and triboelectric noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on analog supply input, using DO-13 thermal mass to sustain 175 °C ambient. Use Value: Delivers long-term reliability where plastic-packaged TVS diodes would delaminate or leak under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5650A | No tape-and-reel packaging; bulk or ammo pack delivery; identical electrical specs and DO-13 package. | Suitable for manual or semi-automated assembly; lacks EIA-296 reel compliance for high-volume SMT lines. | Select 1N5650A/TR when automated through-hole placement is required; choose 1N5650A for prototyping or low-volume hand-soldered builds. |
| SMCJ43A | Surface-mount SMC package; 43 V VWM; 70 V VC @ 21.4 A; same 1500 W rating but lower thermal resistance (junction-to-ambient). | Used where PCB real estate is constrained or mixed-technology assembly is employed; not hermetically sealed. | Choose SMCJ43A for space-constrained industrial controls; retain 1N5650A/TR for radiation-hardened, high-temperature, or legacy through-hole designs. |
Compared with 1N5650A/TR, the 1N5650A offers identical protection performance without reel packaging, while SMCJ43A provides surface-mount compatibility at the cost of hermeticity and extended temperature capability - making 1N5650A/TR the sole option for JANTXV-qualified, high-temp, through-hole surge protection.
Availability
1N5650A/TR is available at Aetrix Electronics and suitable for aerospace avionics, military vehicle electronics, and downhole oilfield instrumentation requiring stable component supply, long-lifecycle support, and traceable hermetic packaging.
Supply support for 1N5650A/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 1N5650A/TR belongs to Microchip's legacy JAN/JANTXV-qualified TVS diode family, engineered specifically for mission-critical surge protection in environments where plastic packaging, moisture sensitivity, or parameter drift are unacceptable.
FAQ
What is the clamping voltage of the 1N5650A/TR under a 1500 W surge?
The 1N5650A/TR clamps to a maximum of 70.1 V when subjected to its rated 21.4 A peak pulse current (10/1000 µs waveform), yielding exactly 1500 W peak pulse power. This VC value is guaranteed across temperature and lifetime, and defines the upper voltage stress imposed on protected circuitry during surge events.
Is the 1N5650A/TR qualified to military specifications?
Yes - the "A" suffix in 1N5650A/TR indicates tighter VBR tolerance, and the base part 1N5650A is eligible for JANTXV qualification per MIL-PRF-19500/500 when ordered with appropriate prefixes. The DO-13 hermetic package and −55 °C to +175 °C rating meet requirements for airborne and tactical systems.
How does the DO-13 package of the 1N5650A/TR improve reliability versus plastic TVS diodes?
The DO-13 package of the 1N5650A/TR uses welded metal-glass construction to achieve hermetic sealing, eliminating moisture ingress, outgassing, and parameter shift under thermal cycling. Unlike plastic DO-15 or SMA packages, it maintains stable VBR and leakage current across −55 °C to +175 °C and resists radiation-induced degradation per MicroNote 050.
Can the 1N5650A/TR be used for bidirectional transient suppression?
No - the 1N5650A/TR is strictly unidirectional. Its cathode is internally connected to the metal case, and it conducts only in reverse breakdown. For bidirectional protection in the same DO-13 footprint, Microchip specifies the separate 1N6036–1N6072A series, which are symmetric dual-diode configurations.
What is the standoff voltage rating and why is it critical for selecting the 1N5650A/TR?
The 1N5650A/TR has a rated standoff voltage (VWM) of 43.6 V, meaning it remains nonconductive below this DC or peak AC voltage. Selecting a VWM ≥ the protected circuit's maximum operating voltage prevents leakage and false triggering - underscoring why 1N5650A/TR is matched to 28 V or 36 V DC systems with margin.
1N5650A/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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 21.4A
- 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
1N5650A/TR FAQ
1.How can I place an order for 1N5650A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5650A/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 1N5650A/TR reliable?
The price and inventory of 1N5650A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5650A/TR is usually 5 days.
3.What payment methods are accepted for 1N5650A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5650A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5650A/TR?
1N5650A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5650A/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 1N5650A/TR?
For technical support, including 1N5650A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5650A/TR requirements.
6.How does Aetrix verify that 1N5650A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5650A/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 1N5650A/TR meets industry standards.
7.What is the process for return or replacement of 1N5650A/TR?
All 1N5650A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5650A/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 1N5650A/TR part is unused and in its original packaging.
Return procedure for 1N5650A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5650A/TR Tags
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