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Microchip Technology MPLAD36KP30A/TR
- Part No.:
- MPLAD36KP30A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP30A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:6,379
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Product details
Overview
MPLAD36KP30A/TR from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤48.8 V at 738 A, and features a 30 V working standoff voltage (VWM) with <100 ps response time. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP30A/TR datasheet, MPLAD36KP30A/TR pinout, MPLAD36KP30A/TR application, or MPLAD36KP30A/TR equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance (RθJC = 1.0 °C/W), RoHS-compliant matte-tin terminals, and IEC 61000-4-5 Class 5 compliance with 42 Ω source impedance are critical design requirements.
Technical Context
This TVS operates in avalanche breakdown mode with a specified VBR range of 33.3–36.8 V at 5 mA test current and exhibits a temperature coefficient of breakdown voltage (αVBR) of +30 mV/°C. Its metal-base cathode construction enables direct thermal coupling to heatsinks, supporting continuous power dissipation up to 504 W at TC = 100 °C.
The PLAD package integrates void-free UL94V-0 epoxy encapsulation and tin-lead or RoHS-compliant annealed matte-tin plating. With junction-to-case thermal resistance of 1.0 °C/W and junction-to-ambient resistance of 50 °C/W on FR4 (1 oz Cu), it sustains repeated surges under ≤0.05% duty factor per Figure 1 and Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 36,000 W - Enables single-device protection against severe lightning-induced transients per DO-160G Waveform 4 & 5A. |
| Working Standoff Voltage (VWM) | 30 V - Matches nominal 24 V DC systems with margin for ripple and tolerance; prevents false triggering during normal operation. |
| Clamping Voltage (VC) | ≤48.8 V at IPP = 738 A - Limits downstream IC stress below 50 V during worst-case surge, protecting 3.3 V/5 V/12 V logic and controllers. |
| Breakdown Voltage (VBR) | 33.3–36.8 V at IBR = 5 mA - Ensures precise turn-on threshold with tight 10.5% tolerance for predictable protection timing. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - Allows efficient heat transfer to external heatsink, enabling sustained surge handling without thermal runaway. |
| Response Time | <100 ps - Faster than typical MOVs or polymer-based protectors, ensuring sub-nanosecond suppression of fast-rising ESD/EFT events. |
| AEC-Q101 Qualified | Validated for automotive underhood applications including load dump and ISO 7637-2 pulses, confirming reliability across –55 °C to +150 °C. |
Pinout & Package
The MPLAD36KP30A/TR uses the PLAD surface-mount package with a metal base acting as the cathode terminal. The anode is accessible via the top-side metallization. This two-terminal configuration requires no biasing and supports direct placement on high-current PCB traces or heatsink-mounted layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary thermal path and high-current return node; must be soldered to large copper pour or heatsink for RθJC = 1.0 °C/W performance. |
| Top-Side Metallization | Anode | High-current input node; connects to protected line (e.g., battery feed); layout must minimize trace inductance for optimal clamping speed. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Surge Rating | Supports single-device compliance with RTCA DO-160 Section 22 Level 4/5 lightning tests without parallel staging. |
| Low RθJC (1.0 °C/W) | Enables >500 W steady-state power handling when mounted on heatsink, extending operational life under repetitive surge conditions. |
| AEC-Q101 Qualification | Confirms robustness for automotive 12 V/24 V systems exposed to load dump, jump-start, and alternator transients. |
| RoHS-compliant Matte-Tin Plating | Ensures reliable solder wetting and intermetallic formation per MIL-STD-750 Method 2026, eliminating lead-related reliability concerns. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints per IPC/JEDEC J-STD-020D.1, simplifying SMT assembly logistics. |
Applications
| Aerospace Avionics Power Bus | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC distribution buses in commercial aircraft against DO-160G Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element placed at bus entry point to limit transient overvoltage before reaching ARINC 429 transceivers and FPGA power supplies. Use Value: Achieves Level 5 compliance with 42 Ω source impedance using a single MPLAD36KP30A/TR, reducing BOM count versus stacked TVS arrays. |
Use Scenario: Load dump protection on 12 V supply rail feeding engine control modules subjected to ISO 7637-2 Pulse 5a (120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS shunting excess energy to ground during alternator field collapse, preventing MCU reset or EEPROM corruption. Use Value: Clamps to ≤48.8 V within 100 ps, maintaining microcontroller operation while dissipating 36 kW peak energy without degradation. |
| Industrial Motor Drive DC Link | Railway Signaling Power Supply |
Use Scenario: Protection of 48 V DC link in variable-frequency drives against IGBT switching transients and inductive kickback. IC Role / Device Role / Timing Role: Fast-response clamp placed across DC bus capacitors to suppress dV/dt spikes exceeding 1 kV/μs generated by high-speed switching. Use Value: Sub-100 ps response ensures clamping occurs before MOSFET gate oxide breakdown, preserving power stage reliability. |
Use Scenario: Secondary lightning protection for 72 V signaling power supplies in trackside cabinets per EN 50121-4. IC Role / Device Role / Timing Role: Standoff-rated TVS deployed after primary gas discharge tube (GDT) to handle residual energy and improve let-through voltage. Use Value: With VWM = 30 V and VC = 48.8 V, provides coordinated protection that limits equipment stress to safe levels under 42 Ω IEC 61000-4-5 Class 4 surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Lower peak power (600 W), higher clamping voltage (48.4 V at 10.3 A), SMB package with RθJA = 110 °C/W. | Suitable only for low-energy ESD/EFT; cannot meet DO-160G Section 22 or IEC 61000-4-5 Class 4/5. | Select SMBJ30A only for cost-sensitive consumer electronics where surge energy is limited to <100 W. |
| SMCJ30A | Higher peak power (1500 W), same VWM/VC, but SMC package with RθJC = 2.5 °C/W and no AEC-Q101 qualification. | Acceptable for industrial 24 V systems with moderate surge exposure; lacks aerospace-grade traceability and DO-160G validation. | Choose SMCJ30A for non-aerospace industrial designs requiring higher surge margin than SMBJ but lower cost and qualification burden than MPLAD36KP30A/TR. |
Compared with SMBJ30A and SMCJ30A, the MPLAD36KP30A/TR delivers 24× and 24× higher peak power respectively, validated AEC-Q101 reliability, and DO-160G Section 22 compliance-making it the sole option for certified aerospace and high-end automotive safety-critical power rail protection.
Availability
MPLAD36KP30A/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power management, and industrial motor drive DC link protection requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP30A/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 MPLAD36KP30A/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for mission-critical surge immunity in environments demanding DO-160G, AEC-Q101, and IEC 61000-4-5 compliance.
FAQ
What is the maximum clamping voltage of the MPLAD36KP30A/TR at its rated peak pulse current?
The MPLAD36KP30A/TR has a maximum clamping voltage (VC) of 48.8 V when subjected to its rated peak pulse current (IPP) of 738 A under the 10/1000 μs waveform. This value is guaranteed per Table 4 in the datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MPLAD36KP30A/TR maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is the MPLAD36KP30A/TR suitable for automotive underhood applications?
Yes, the MPLAD36KP30A/TR is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for automotive underhood applications such as engine control units and transmission control modules. Its 30 V working standoff voltage aligns with 24 V nominal systems, and its 36 kW surge rating handles ISO 7637-2 load dump pulses without degradation. The MPLAD36KP30A/TR also supports RoHS-compliant reflow profiles up to 260 °C for standard SMT assembly.
How does the PLAD package of the MPLAD36KP30A/TR improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of the MPLAD36KP30A/TR uses a metal base as the cathode terminal, providing a direct thermal conduction path from the silicon die to the PCB copper pour or external heatsink. With a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W-versus 2.5 °C/W for SMCJ or 110 °C/W for SMBJ-the MPLAD36KP30A/TR sustains higher average power and survives repetitive surges without thermal runaway. This architecture is essential for aerospace and industrial applications where thermal margin directly impacts field reliability.
Does the MPLAD36KP30A/TR meet RTCA DO-160G Section 22 lightning protection requirements?
Yes, the MPLAD36KP30A/TR is explicitly validated for RTCA DO-160G Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). Per the datasheet, it achieves Level 4 and Level 5 compliance for Waveform 4 across the full 14–300 V standoff range, and Level 4 for Waveform 5A up to 78 V. The MPLAD36KP30A/TR's 36 kW rating and <100 ps response enable it to pass these stringent aircraft certification tests as a primary or secondary protector.
What is the polarity configuration and marking convention for the MPLAD36KP30A/TR?
The MPLAD36KP30A/TR is a unidirectional TVS diode, indicated by the "A" suffix (as opposed to "CA" for bidirectional variants). Its cathode is the metal base on the bottom of the PLAD package, while the anode is the top-side metallization. The device body is laser-marked with the full part number "MPLAD36KP30A", and polarity is confirmed by the cathode-down mounting orientation required for optimal thermal and electrical performance. No additional polarity marking is used beyond physical orientation.
MPLAD36KP30A/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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.8V
- Current - Peak Pulse (10/1000µs):
- 738A
- 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
MPLAD36KP30A/TR FAQ
1.How can I place an order for MPLAD36KP30A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP30A/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 MPLAD36KP30A/TR reliable?
The price and inventory of MPLAD36KP30A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP30A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP30A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP30A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP30A/TR?
MPLAD36KP30A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP30A/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 MPLAD36KP30A/TR?
For technical support, including MPLAD36KP30A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP30A/TR requirements.
6.How does Aetrix verify that MPLAD36KP30A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP30A/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 MPLAD36KP30A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP30A/TR?
All MPLAD36KP30A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP30A/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 MPLAD36KP30A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP30A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP30A/TR Tags
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