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Microchip Technology MPLAD36KP51CAE3/TR
- Part No.:
- MPLAD36KP51CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP51CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:2,987
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Product details
Overview
MPLAD36KP51CAE3/TR from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 51 V working standoff voltage (VWM), 56.7–62.7 V breakdown voltage (VBR), and 82.4 V clamping voltage (VC) at 437 A peak impulse current - designed for secondary lightning protection in avionics per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP51CAE3/TR datasheet, MPLAD36KP51CAE3/TR pinout, MPLAD36KP51CAE3/TR application, or MPLAD36KP51CAE3/TR equivalent, this device delivers verified bidirectional surge suppression with <5 ns response time, 1.0 °C/W junction-to-case thermal resistance, AEC-Q101 qualification, RoHS compliance (e3), and tape-and-reel packaging (TR suffix) for automated SMT assembly in high-reliability aerospace and automotive systems.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically around ground, enabling robust protection of differential signal lines and AC-coupled interfaces without polarity constraints. Its low RθJC (1.0 °C/W) and metal-base thermal path allow direct mounting to heatsinks for sustained multi-stroke surge handling.
It meets RTCA DO-160G Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 protection up to 300 V standoff, with full IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-4 EFT, and IEC 61000-4-5 surge compliance across 14–400 V variants - all validated via 100% lot surge testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 51 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR | 56.7–62.7 V at 5 mA - Breakdown onset range; ensures reliable turn-on above normal operating voltage with controlled tolerance. |
| VC | 82.4 V at 437 A (10/1000 μs) - Clamped voltage during worst-case surge; defines maximum stress imposed on protected downstream circuitry. |
| IPP | 437 A - Peak non-repetitive surge current capability; supports multi-stroke lightning events per DO-160 Section 22. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables effective heat transfer to external heatsink for thermal stability under repeated surges. |
| Response Time | <5 ns - Bidirectional turn-on delay; critical for suppressing fast-rising transients such as ESD and EFT. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JEDEC standards. |
Pinout & Package
Package: PLAD (Plastic Low-profile Anvil Device) - surface-mount, void-free UL94V-0 epoxy body with metal base acting as cathode terminal; total weight ≈1.8 g; RoHS-compliant matte-tin plating on terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (Bidirectional) | Common reference plane for both polarities; must be soldered to large copper pour or heatsink for thermal and electrical performance. |
| Top Surface Pad | Anode (Bidirectional) | Exposed metallization on top of package; forms symmetrical conduction path with base for ± transient clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA) | Enables single-device protection of AC lines, differential buses, or floating references without polarity concerns. |
| 36 kW peak pulse rating (10/1000 μs) | Supports multi-stroke lightning immunity per RTCA DO-160 Section 22 Class 4/5 and IEC 61000-4-5 Class 3–5. |
| 100% lot surge tested | Guarantees every production lot meets specified IPP and VC limits - no sampling-based validation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and chassis electronics with extended temperature and life-cycle requirements. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life restrictions - simplifies SMT handling and storage logistics. |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus inputs against lightning-induced surges per RTCA DO-160G Section 22 Waveform 4 and 5A. IC Role / Device Role / Timing Role: Primary bidirectional clamping element placed at board edge before DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤82.4 V during 437 A surges, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: Load dump and alternator spike suppression on 12 V battery-fed ECU power rails per ISO 7637-2 Pulse 5a/b. IC Role / Device Role / Timing Role: High-energy shunt device mounted directly to chassis ground plane to divert >300 A transients. Use Value: Withstands 36,000 W pulses while maintaining <5 ns response, ensuring MCU and sensor ICs remain operational after repeated load dumps. |
| Industrial Motor Drive DC Bus | Telecom Base Station Power Interface |
Use Scenario: Secondary surge protection on 400 V DC link inputs exposed to switching transients and induced RFI in variable-frequency drives. IC Role / Device Role / Timing Role: Back-to-back clamping device across DC+ and DC−, referenced to isolated ground. Use Value: Symmetric 51 V standoff and 82.4 V clamping enable balanced overvoltage limiting without biasing complications. |
Use Scenario: Ethernet PoE++ (IEEE 802.3bt) power input protection against lightning-induced common-mode surges on outdoor base station cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS bridging power pair (PSE side) to chassis ground for differential + common-mode suppression. Use Value: 437 A IPP and 1.0 °C/W RθJC support repeated surge events in uncooled outdoor enclosures per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | Lower peak power (600 W), smaller SMB package, higher RθJA (110 °C/W), no AEC-Q101 or DO-160 qualification. | Suitable only for low-energy ESD/EFT in consumer electronics; insufficient for multi-stroke lightning or load dump. | Select SMBJ51CA only for cost-sensitive, space-constrained designs where surge energy remains below 100 A (10/1000 μs). |
| SMCJ51CA | Higher peak power (1500 W), larger SMC package, RθJA = 35 °C/W, AEC-Q101 qualified but not DO-160 tested. | Valid for automotive load dump and industrial IEC 61000-4-5 Class 3, but lacks DO-160 Waveform 4/5A certification data. | Choose SMCJ51CA when DO-160 compliance is not required and PCB layout allows SMC footprint with moderate thermal relief. |
Compared with SMBJ51CA and SMCJ51CA, MPLAD36KP51CAE3/TR delivers 24× and 24× higher peak power respectively, certified DO-160 lightning performance, and superior thermal management - making it the only option for mission-critical avionics and high-reliability automotive power systems requiring validated multi-stroke endurance.
Availability
MPLAD36KP51CAE3/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MPLAD36KP51CAE3/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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP series belongs to Microsemi's high-power surface-mount TVS portfolio, engineered specifically for multi-stroke lightning and load dump protection in safety-critical systems where thermal robustness and certification compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP51CAE3/TR at its rated peak pulse current?
The MPLAD36KP51CAE3/TR has a maximum clamping voltage (VC) of 82.4 V when subjected to its rated peak impulse current of 437 A under the 10/1000 μs waveform. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The clamping performance is guaranteed across the full operating temperature range and validated per lot.
Is MPLAD36KP51CAE3/TR suitable for automotive applications requiring AEC-Q101 qualification?
Yes, MPLAD36KP51CAE3/TR is fully AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and surge endurance per JEDEC standards. Its qualification covers the full rated operating temperature range (–55 °C to +150 °C) and confirms reliability for under-hood automotive ECUs, battery management systems, and ADAS power supplies where sustained thermal and electrical stress is expected.
How does the PLAD package of MPLAD36KP51CAE3/TR improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of MPLAD36KP51CAE3/TR features a metal base that serves as both the cathode terminal and primary thermal path, achieving a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W - over 35× lower than typical SMC packages (~35 °C/W) and ~110× lower than SMB packages (~110 °C/W). This enables direct mounting to heatsinks or large copper planes, sustaining repeated 36 kW surges without thermal runaway or parameter drift.
Does MPLAD36KP51CAE3/TR meet RTCA DO-160G lightning protection requirements?
Yes, MPLAD36KP51CAE3/TR is explicitly rated for RTCA DO-160G Section 22 lightning-induced transient protection, supporting Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 at 51 V standoff. Its 36,000 W rating, <5 ns response, and bidirectional symmetry make it suitable for primary or secondary protection on aircraft power, data, and sensor interfaces where multi-stroke survivability is mandated.
What does the "TR" suffix in MPLAD36KP51CAE3/TR indicate?
The "TR" suffix in MPLAD36KP51CAE3/TR denotes tape-and-reel packaging compliant with EIA-481-B standards, optimized for high-speed automated SMT placement. This configuration includes carrier tape, cover tape, and reel quantities specified by Microsemi - ensuring consistent orientation, mechanical protection, and compatibility with pick-and-place equipment used in volume manufacturing of aerospace and automotive electronics.
MPLAD36KP51CAE3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 437A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP51CAE3/TR FAQ
1.How can I place an order for MPLAD36KP51CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP51CAE3/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 MPLAD36KP51CAE3/TR reliable?
The price and inventory of MPLAD36KP51CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP51CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP51CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP51CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP51CAE3/TR?
MPLAD36KP51CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP51CAE3/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 MPLAD36KP51CAE3/TR?
For technical support, including MPLAD36KP51CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP51CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP51CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP51CAE3/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 MPLAD36KP51CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP51CAE3/TR?
All MPLAD36KP51CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP51CAE3/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 MPLAD36KP51CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP51CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP51CAE3/TR Tags
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