My Inquiry
My Account
Microchip Technology MPLAD36KP350A/TR
- Part No.:
- MPLAD36KP350A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP350A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:6,369
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPLAD36KP350A/TR from Microsemi (now Microchip) is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 350 V working standoff voltage (VWM), 389–431 V breakdown voltage (VBR), and 564 V clamping voltage (VC) at 64 A peak impulse current - designed for secondary lightning protection in aerospace avionics per RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP350A/TR datasheet, MPLAD36KP350A/TR pinout, MPLAD36KP350A/TR application, or MPLAD36KP350A/TR equivalent, this device is selected for high-energy surge suppression where low thermal resistance (RθJC = 1.0 °C/W), fast response (<100 ps turn-on), and AEC-Q101 qualification support robust protection in automotive load dump and aircraft pin-injection scenarios.
Technical Context
This TVS operates in avalanche breakdown mode to clamp transients above its VWM, delivering sub-100 ps response for unidirectional conduction with cathode on the metal baseplate. Its PLAD package enables direct thermal coupling to heatsinks, supporting sustained power dissipation up to 504 W at TC = 100 °C.
It meets IEC 61000-4-5 (Class 1–5, 42 Ω/12 Ω/2 Ω source impedance), IEC 61000-4-2/4-4 (ESD/EFT), and RTCA DO-160G Waveform 4 (Level 4 & 5) and Waveform 5A (Level 4 & 5) - with clamping performance validated across temperature from –55 °C to +150 °C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 350 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR | 389–431 V at 5 mA - Breakdown threshold range defining reliable avalanche initiation under surge conditions. |
| VC | 564 V at IPP = 64 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| IPP | 64 A - Peak non-repetitive impulse current capability; defines maximum surge energy absorption (36 kW). |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance enabling efficient heat transfer to external heatsink or PCB copper. |
| TJ | –55 to +150 °C - Operational junction temperature range supporting deployment in extreme automotive and aerospace environments. |
| ID | 10 µA max at VWM - Low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
Pinout & Package
The MPLAD36KP350A/TR uses the PLAD surface-mount package: void-free UL94V-0 epoxy body with metal baseplate acting as cathode terminal; total weight ≈ 1.7–2.0 g; RoHS-compliant matte-tin plating on terminals; polarity marked via cathode on bottom metal surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Transient current entry point | Connected to line being protected; conducts surge current toward cathode during overvoltage event. |
| Cathode (metal baseplate) | Transient current return path & thermal interface | Serves as both electrical return and primary thermal conduction path to heatsink or large copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating (10/1000 μs) | Enables single-device protection against severe lightning-induced surges per RTCA DO-160 Section 22 without cascaded stages. |
| RθJC = 1.0 °C/W | Allows >500 W steady-state power handling at 100 °C case temperature - critical for automotive load dump with extended duration pulses. |
| AEC-Q101 qualified | Validates reliability for automotive powertrain and chassis applications including 12 V/24 V battery systems. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly and reduces handling overhead. |
| Full lot surge testing | Confirms every production batch meets 36 kW pulse rating - eliminates sampling uncertainty in mission-critical protection. |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs on flight control computers subjected to RTCA DO-160G Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) pin injection transients. IC Role / Device Role / Timing Role: Primary transient shunt element placed directly at connector entry point to limit voltage excursion to <564 V during multi-stroke lightning events. Use Value: Enables compliance with DO-160 Section 22 Level 4/5 without additional filtering or derating - verified across –55 °C to +125 °C operating range. | Use Scenario: Load dump protection on 12 V battery-fed ECU power rails per ISO 7637-2 Pulse 5a (110 V, 400 ms), where alternator disconnection induces high-energy transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode mounted between battery rail and ground, conducting surge current into chassis ground via low-inductance path. Use Value: Absorbs up to 36 kW peak power while maintaining clamping below 564 V - prevents damage to MCU, CAN transceivers, and sensor interfaces. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protection of 300–400 V DC bus inputs in variable-frequency drives exposed to switching transients from IGBT commutation and inductive kickback. IC Role / Device Role / Timing Role: High-voltage TVS placed across DC bus terminals to clamp voltage spikes exceeding 350 V nominal operating level. Use Value: Fast <100 ps response limits overshoot duration, reducing stress on electrolytic capacitors and gate drivers - validated at 150 °C junction temperature. | Use Scenario: Secondary surge protection on 350 V signaling lines in European railway signaling cabinets per EN 50121-4 for electromagnetic compatibility. IC Role / Device Role / Timing Role: Standoff-rated TVS installed upstream of isolation barriers and optocouplers to prevent latch-up or insulation failure during induced surges. Use Value: Meets IEC 61000-4-5 Class 4 (42 Ω source) with 564 V clamping - ensures signal integrity and functional safety compliance without adding series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ350A | Lower peak power rating (600 W), higher clamping voltage (593 V), SMB package with RθJC ≈ 40 °C/W. | Not suitable for RTCA DO-160 multi-stroke or automotive load dump; limited to low-energy ESD/EFT. | Select only for cost-sensitive, low-surge applications where 36 kW capability is unnecessary. |
| SMCJ350A | Higher peak power (1500 W), but still 4× lower than MPLAD36KP350A/TR; SMC package; RθJC ≈ 15 °C/W; no AEC-Q101 or DO-160 validation. | Acceptable for basic IEC 61000-4-5 Class 3, but fails Class 4/5 and load dump requirements. | Use when footprint constraints prohibit PLAD, but verify thermal design margins for sustained surge duty. |
Compared with SMBJ350A and SMCJ350A, the MPLAD36KP350A/TR delivers 24× and 24× higher peak power respectively, with superior thermal management (RθJC = 1.0 °C/W) and certified compliance for aerospace and automotive high-energy transients - making it irreplaceable for DO-160 Section 22 and ISO 7637-2 Pulse 5a designs.
Availability
MPLAD36KP350A/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 and long-term lifecycle assurance.
Supply support for MPLAD36KP350A/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 provider of high-reliability analog, mixed-signal, and radiation-hardened semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP350A/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump in harsh-environment systems where thermal performance and certification compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP350A/TR at its rated peak pulse current?
The MPLAD36KP350A/TR has a maximum clamping voltage (VC) of 564 V when subjected to its rated peak pulse current of 64 A under the 10/1000 μs waveform. This value is measured per standard test conditions at 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The MPLAD36KP350A/TR maintains this clamping performance across its full operational temperature range.
Is MPLAD36KP350A/TR qualified for automotive applications?
Yes, the MPLAD36KP350A/TR is AEC-Q101 qualified, confirming its reliability for automotive use cases including engine control units, battery management systems, and ADAS power supplies. It is specifically designed to withstand automotive load dump transients per ISO 7637-2 Pulse 5a, with validated performance at junction temperatures up to +150 °C. The MPLAD36KP350A/TR also supports under-hood thermal cycling and humidity exposure per AEC-Q101 stress test profiles.
Does MPLAD36KP350A/TR meet RTCA DO-160 lightning protection requirements?
Yes, the MPLAD36KP350A/TR is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) pin injection at Levels 4 and 5. Its 36 kW rating, low RθJC, and fast <100 ps response enable compliance without external thermal derating. The MPLAD36KP350A/TR is referenced in the datasheet for Level 4/5 protection across the 14 V to 350 V standoff range.
What is the thermal resistance from junction to case for MPLAD36KP350A/TR?
The MPLAD36KP350A/TR has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with the metal baseplate mounted to a thermally optimized heatsink or large copper area. This low value enables efficient heat extraction during high-energy surges and supports steady-state power dissipation up to 504 W at 100 °C case temperature. Proper thermal interface material and mounting pressure are required to achieve the specified RθJC in actual designs.
How does the PLAD package of MPLAD36KP350A/TR differ from standard SMC or SMB packages?
The PLAD package of MPLAD36KP350A/TR features a metal baseplate that serves as both the cathode terminal and primary thermal conduction path - unlike SMB/SMC plastic-body packages which rely on leadframe conduction. This architecture achieves RθJC = 1.0 °C/W versus ~15–40 °C/W for SMC/SMB, enabling 24× higher peak power handling. The MPLAD36KP350A/TR also supports tape-and-reel (TR suffix) and offers moisture sensitivity level 1, eliminating bake requirements prior to reflow.
MPLAD36KP350A/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 350V
- Voltage - Breakdown (Min):
- 389V
- Voltage - Clamping (Max) @ Ipp:
- 564V
- Current - Peak Pulse (10/1000µs):
- 64A
- 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
MPLAD36KP350A/TR FAQ
1.How can I place an order for MPLAD36KP350A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP350A/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 MPLAD36KP350A/TR reliable?
The price and inventory of MPLAD36KP350A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP350A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP350A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP350A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP350A/TR?
MPLAD36KP350A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP350A/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 MPLAD36KP350A/TR?
For technical support, including MPLAD36KP350A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP350A/TR requirements.
6.How does Aetrix verify that MPLAD36KP350A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP350A/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 MPLAD36KP350A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP350A/TR?
All MPLAD36KP350A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP350A/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 MPLAD36KP350A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP350A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP350A/TR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
