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Microchip Technology 1N5629A/TR
- Part No.:
- 1N5629A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
1N5629A/TR.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
1N5629A/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 delivers 1500 W peak pulse power at 10/1000 µs, clamps transients below 10.5 V at 143 A, and operates across –55°C to +175°C with a 5.80 V rated standoff voltage (VWM).
For engineers reviewing the 1N5629A/TR datasheet, 1N5629A/TR pinout, 1N5629A/TR application, or 1N5629A/TR equivalent, this device is selected for IEC 61000-4-2 ESD, IEC 61000-4-4 EFT, and secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), especially where radiation hardness and hermetic sealing are mandatory.
Technical Context
The 1N5629A/TR operates as a unidirectional avalanche-clamping TVS diode, triggered when reverse voltage exceeds its 6.45–7.14 V breakdown range (IBR = 10 mA). Its response time is under 100 ps, enabling protection against fast-rising ESD and switching transients without latency-induced failure.
It features a cathode-connected-to-case polarity configuration, requires no bias circuitry, and relies on thermal conduction through leads (50°C/W junction-to-lead) rather than PCB copper for heat dissipation-making it suitable for high-temperature lead-soldered mounting in constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 5.80 V - Maximum continuous reverse operating voltage before avalanche onset; ensures non-conductive state during normal system operation. |
| VBR (Breakdown Voltage) | 6.45–7.14 V @ 10 mA - Confirmed avalanche initiation threshold; defines minimum overvoltage level that triggers clamping action. |
| VC (Clamping Voltage) | 10.5 V @ 143 A - Peak voltage seen across terminals during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPP (Peak Pulse Power) | 1500 W - Sustained energy absorption capability for single transient events; enables robust protection against inductive switch-off spikes and lightning surges. |
| TJ Range | –55°C to +175°C - Full operational temperature envelope; supports deployment in engine bays, avionics bays, and downhole electronics without derating. |
| Package | DO-13 (DO-202AA) - Hermetically sealed metal-glass case with tin-lead plating; provides moisture immunity, radiation hardness, and mechanical ruggedness for military/aerospace use. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically connected to the case and marked by a diode symbol on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point during reverse surge | Connected internally to P-region; carries full IPP surge current into the junction during clamping. |
| Cathode (Lead 1 / Case) | Reference and return path | Electrically tied to metal case; must be connected to system ground plane or chassis for effective low-impedance surge shunting. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-13 metal package | Prevents moisture ingress and outgassing in vacuum/high-humidity environments; certified for MIL-PRF-19500/500 JANTXV qualification. |
| <100 ps response time | Enables sub-nanosecond reaction to ESD events (IEC 61000-4-2), preventing latch-up or gate oxide damage in sensitive CMOS interfaces. |
| 1500 W peak pulse power | Handles high-energy transients from relay coil collapse or motor commutation without degradation-verified per 10/1000 µs waveform. |
| Radiation-hardened design | Inherently tolerant to total ionizing dose (TID) per MicroNote 050; validated for space-qualified avionics and nuclear instrumentation. |
| TR tape-and-reel packaging | Enables automated placement in high-reliability manufacturing; conforms to EIA-296 standard for consistent feed and orientation control. |
Applications
| Aerospace Avionics Bus Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and power rails in flight control computers exposed to induced RF and secondary lightning. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly at connector entry points to shunt surge energy to chassis ground before reaching interface ICs. Use Value: Maintains signal integrity under 42 Ω IEC 61000-4-5 Class 1 surges up to 2 kV while surviving –55°C to +175°C thermal cycling. |
Use Scenario: Safeguarding gate drivers and microcontroller I/O in variable-frequency drives subjected to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 8.3 ms half-sine forward surge currents up to 200 A without failure. Use Value: Prevents false triggering and latch-up in isolated gate drivers by limiting transient overshoot to ≤10.5 V during 143 A pulses. |
| Military Vehicle Power Distribution | Nuclear Instrumentation Signal Conditioning |
Use Scenario: Shielding 28 V DC power inputs in armored vehicle ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage suppression element mounted directly at bulkhead connectors with case-to-chassis grounding. Use Value: Withstands 1500 W surges and operates reliably after 100 krad(Si) TID exposure-meeting MIL-STD-810G and MIL-STD-461F requirements. |
Use Scenario: Protecting analog front-end amplifiers in reactor monitoring sensors exposed to gamma-induced transients and EMI in containment zones. IC Role / Device Role / Timing Role: Radiation-hardened clamping diode integrated into sensor signal path to limit fault voltage without adding noise or offset. Use Value: Delivers stable VWM = 5.80 V and <0.1%/°C VBR drift across wide temperature swings, ensuring calibration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5629A (bulk) | No TR suffix; supplied in bulk packaging instead of tape-and-reel. | Lacks EIA-296 compliance; unsuitable for automated SMT assembly lines requiring reel-fed placement. | Select 1N5629A/TR only when automated pick-and-place integration and traceable reel lot control are required. |
| SMCJ5.0A | Surface-mount SMC package; 5.0 V VWM; 1500 W rating; 9.2 V VC @ 163 A. | Lower profile and smaller footprint; optimized for PCB space-constrained designs but lacks hermetic seal and radiation hardness. | Choose SMCJ5.0A for commercial industrial boards where DO-13 mechanical robustness and TID tolerance are not mandated. |
Compared with 1N5629A/TR, the bulk 1N5629A sacrifices automation compatibility for lower handling cost, while SMCJ5.0A trades hermetic reliability and radiation tolerance for surface-mount scalability-making 1N5629A/TR the sole choice for mission-critical through-hole deployments demanding MIL-qualified ruggedness.
Availability
1N5629A/TR is available at Aetrix Electronics and suitable for aerospace avionics, military vehicle electronics, and nuclear instrumentation applications requiring stable component supply, long-term obsolescence management, and traceable military-grade sourcing.
Supply support for 1N5629A/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 defense, aerospace, and industrial markets.
The 1N5629A/TR belongs to Microchip's legacy JAN/JANTXV-qualified TVS diode family, engineered specifically for extreme-environment transient suppression where hermeticity, temperature resilience, and radiation tolerance are non-negotiable.
FAQ
What is the standoff voltage (VWM) specification for the 1N5629A/TR?
The 1N5629A/TR has a rated standoff voltage (VWM) of 5.80 V, meaning it remains non-conductive under continuous reverse bias up to this level. This value is selected to exceed typical 5 V logic rail voltages while providing margin against ripple and tolerance drift-ensuring reliable clamping only during actual transients.
Does the 1N5629A/TR meet military qualification standards?
Yes, the 1N5629A/TR is qualified to MIL-PRF-19500/500 as a JANTXV-grade device when ordered with the JANTXV prefix (e.g., JANTXV1N5629A/TR). Its hermetic DO-13 package, radiation hardness per MicroNote 050, and extended temperature range validate its use in DoD and NASA programs.
How does the 1N5629A/TR compare to plastic-packaged TVS diodes like the 1N6267 series?
The 1N5629A/TR uses a hermetically sealed metal-glass DO-13 package, offering superior moisture resistance, thermal conductivity, and radiation tolerance versus plastic axial-leaded alternatives such as the 1N6267 series. This makes the 1N5629A/TR appropriate for vacuum, high-humidity, or high-TID environments where plastic packages risk delamination or parameter shift.
What is the maximum clamping voltage (VC) of the 1N5629A/TR under surge conditions?
The 1N5629A/TR exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to its rated 143 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can the 1N5629A/TR be used for bidirectional transient suppression?
No, the 1N5629A/TR is strictly unidirectional. Its cathode is tied to the case and marked externally, permitting conduction only in reverse-bias avalanche mode. For bidirectional protection in the same DO-13 footprint, Microchip specifies the separate 1N6036–1N6072A series-not the 1N5629A/TR.
1N5629A/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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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
1N5629A/TR FAQ
1.How can I place an order for 1N5629A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5629A/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 1N5629A/TR reliable?
The price and inventory of 1N5629A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5629A/TR is usually 5 days.
3.What payment methods are accepted for 1N5629A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5629A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5629A/TR?
1N5629A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5629A/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 1N5629A/TR?
For technical support, including 1N5629A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5629A/TR requirements.
6.How does Aetrix verify that 1N5629A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5629A/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 1N5629A/TR meets industry standards.
7.What is the process for return or replacement of 1N5629A/TR?
All 1N5629A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5629A/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 1N5629A/TR part is unused and in its original packaging.
Return procedure for 1N5629A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5629A/TR Tags
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