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Microchip Technology MAPLAD36KP150A
- Part No.:
- MAPLAD36KP150A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP150A.pdf
- Description:
- TVS DIODE 150VWM 243VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,494
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Product details
Overview
MAPLAD36KP150A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive power systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps at ≤243 V under 150 A peak impulse current, and features a 150 V reverse standoff voltage (VWM) with 167–185 V breakdown range (V(BR)). It meets RTCA DO-160 Section 22 multi-stroke lightning requirements and IEC 61000-4-5 Class 3–5 secondary lightning protection.
For engineers reviewing the MAPLAD36KP150A datasheet, MAPLAD36KP150A pinout, MAPLAD36KP150A application, or MAPLAD36KP150A equivalent, key selection criteria include its 150 V VWM rating, 243 V max clamping voltage at IPP = 150 A, low 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, and qualification to AEC-Q101 and MIL-PRF-19500 screening levels.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive electronics, activating above its 150 V standoff threshold to divert surge energy away from downstream circuitry. Its silicon avalanche structure enables sub-100 ps response time and stable breakdown behavior across -55°C to +150°C operating range.
The device is optimized for high-reliability applications requiring repeatable multi-stroke surge handling - validated per RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 up to 78 V standoff variants, with MAPLAD36KP150A supporting 150 V systems under 42 Ω and 12 Ω source impedances per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 150 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 167–185 V @ 5 mA - defines precise avalanche onset threshold for predictable protection |
| Max Clamping Voltage (VC) | 243 V @ 150 A IPP - limits voltage seen by protected ICs during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or heatsink for repeated surge duty |
| Standby Current (ID) | 10 μA @ 150 V - negligible leakage ensures no system power drain during normal operation |
| Temperature Range | -55°C to +150°C - supports engine bay, avionics bay, and industrial control environments |
Pinout & Package
MAPLAD36KP150A uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is the metal base (bottom side) of the device; polarity marking is present only on unidirectional versions. Package dimensions are 12.32 × 10.54 × 5.08 mm (L × W × H), with recommended pad layout per RF01216 Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line (e.g., 150 V bus); current flows into device during positive transients |
| Cathode | Negative reference / ground return | Mounted to large copper pour or heatsink; serves as low-inductance surge return path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT construction | Enables placement on high-density PCBs without height clearance issues (max height 5.33 mm) |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring robust surge immunity |
| MIL-PRF-19500 upscreening options | Supports M, MA, MX, MXL reliability levels for mission-critical aerospace deployments |
| RoHS-compliant e3 plating | Tin-lead alternative eliminated; matte-tin terminations ensure reliable solder joint formation |
| Moisture Sensitivity Level 1 | No dry pack or baking required prior to reflow - simplifies manufacturing logistics |
Applications
| Aerospace Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting flight control computers and sensor interfaces on 28 V DC aircraft buses subjected to RTCA DO-160 Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS that activates within <100 ps to limit transient overvoltage to safe levels. Use Value: Enables compliance with Level 4 pin-injection testing (Waveform 4) and multi-stroke lightning endurance without derating. |
Use Scenario: Safeguarding infotainment ECUs and ADAS modules during alternator load dump events in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: High-energy shunt device placed at main power entry point to clamp 120 V/200 V spikes lasting up to 400 ms. Use Value: Handles 36 kW pulses while maintaining <243 V clamping - prevents latch-up or burnout in downstream PMICs and microcontrollers. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Power Interface |
Use Scenario: Shielding gate drivers and isolated feedback circuits in variable-frequency drives exposed to IGBT switching transients and EFT noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor bridging DC link rails to earth ground, absorbing repetitive 10/1000 μs surges. Use Value: 1.0 °C/W RθJC enables sustained operation under 0.05% duty cycle surges - critical for factory automation uptime. |
Use Scenario: Securing trackside signaling controllers connected to 110 V AC or 72 V DC supply lines vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: Secondary protection stage compliant with IEC 61000-4-5 Class 4 (42 Ω source) for long-distance rail infrastructure. Use Value: Validated clamping performance at 150 V standoff ensures compatibility with legacy signaling voltage tolerances while meeting EN 50121-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | 600 W PPP rating (vs. 36,000 W); same 150 V VWM but lower clamping (243 V vs. 243 V at much lower IPP) | Only suitable for low-energy ESD/EFT - not rated for lightning or load dump | Select SMBJ150A only for board-level ESD protection where surge energy is <1 J. |
| SMCJ150A | 1500 W PPP rating; identical VWM/V(BR)/VC specs but 25× lower energy capacity than MAPLAD36KP150A | Limited to single-stroke transients in non-aerospace industrial controls | Choose SMCJ150A when cost sensitivity outweighs need for multi-stroke lightning resilience. |
Compared with SMBJ150A and SMCJ150A, MAPLAD36KP150A provides 60× and 24× higher peak pulse power respectively - enabling certified compliance with RTCA DO-160 and IEC 61000-4-5 Class 5, which those alternatives cannot meet.
Availability
MAPLAD36KP150A is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drive designs requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP150A 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP150A belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in safety-critical platforms.
FAQ
What is the clamping voltage of MAPLAD36KP150A at its rated peak pulse current?
The MAPLAD36KP150A exhibits a maximum clamping voltage (VC) of 243 V when subjected to its rated peak impulse current of 150 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in RF01216 Rev B and ensures downstream components remain below their absolute maximum voltage ratings during surge events. The MAPLAD36KP150A maintains this clamping performance across its full operating temperature range.
Is MAPLAD36KP150A qualified for automotive applications?
Yes, MAPLAD36KP150A is qualified to AEC-Q101 standards for stress testing of discrete semiconductors, confirming its suitability for automotive powertrain and chassis applications. It has been validated for load dump protection per ISO 7637-2 and supports 12 V/24 V system architectures. The MAPLAD36KP150A also offers optional MIL-PRF-19500 screening for enhanced reliability in safety-critical vehicle subsystems.
Does MAPLAD36KP150A require moisture-sensitive handling?
No, MAPLAD36KP150A is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry packing, baking, or special floor-life controls before reflow soldering. This simplifies manufacturing integration and eliminates yield loss risks associated with moisture-induced popcorning. The MAPLAD36KP150A's void-free epoxy body contributes to this robust moisture resistance.
How does MAPLAD36KP150A differ from standard SMCJ-series TVS diodes?
MAPLAD36KP150A delivers 36,000 W peak pulse power - 24× higher than the 1500 W rating of SMCJ150A - due to its optimized thermal design and larger die area. Its 1.0 °C/W junction-to-case thermal resistance enables effective heat dissipation during repetitive surges, whereas SMCJ devices rely on ambient convection. The MAPLAD36KP150A is also tested to RTCA DO-160 Section 22, a requirement not met by standard SMCJ parts.
Can MAPLAD36KP150A be used in bidirectional configurations?
No, MAPLAD36KP150A is a unidirectional TVS diode; bidirectional variants carry the "CA" suffix (e.g., MAPLAD36KP150CA). The cathode is located on the metal base of the MAPLAD36KP150A package, requiring correct orientation during PCB layout. Using MAPLAD36KP150A in AC-coupled or bipolar signal paths would result in forward conduction and potential failure - select MAPLAD36KP150CA for such applications.
MAPLAD36KP150A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 149A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MAPLAD36KP150A FAQ
1.How can I place an order for MAPLAD36KP150A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP150A 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 MAPLAD36KP150A reliable?
The price and inventory of MAPLAD36KP150A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP150A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP150A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP150A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP150A?
MAPLAD36KP150A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP150A 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 MAPLAD36KP150A?
For technical support, including MAPLAD36KP150A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP150A requirements.
6.How does Aetrix verify that MAPLAD36KP150A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP150A 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 MAPLAD36KP150A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP150A?
All MAPLAD36KP150A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP150A, 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 MAPLAD36KP150A part is unused and in its original packaging.
Return procedure for MAPLAD36KP150A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP150A Tags
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