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Microchip Technology MAPLAD36KP30A
- Part No.:
- MAPLAD36KP30A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP30A.pdf
- Description:
- TVS DIODE 30VWM 48.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,491
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Product details
Overview
MAPLAD36KP30A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. 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 reverse standoff voltage (VWM), 33.3–36.8 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MAPLAD36KP30A datasheet, MAPLAD36KP30A pinout, MAPLAD36KP30A application, or MAPLAD36KP30A equivalent, key selection criteria include its 30 V VWM rating for 24 V automotive rail protection, low-profile PLAD package with metal-base cathode termination, verified multi-stroke lightning compliance, and AEC-Q101 qualification for harsh-environment reliability.
Technical Context
The MAPLAD36KP30A operates as a silicon avalanche diode-based TVS, leveraging controlled avalanche breakdown to clamp fast-rising transients while maintaining low dynamic impedance. Its unidirectional polarity and cathode-on-base construction enable direct thermal coupling to PCB copper or heatsinks, supporting sustained energy dissipation under repetitive surges up to 0.05% duty cycle.
It meets RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 protection requirements when mounted on FR4 with recommended pad layout, and provides secondary lightning protection per IEC 61000-4-5 across 2 Ω, 12 Ω, and 42 Ω source impedances - validated for Class 1–4 applications at 30 V standoff.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning-level energy without failure |
| Reverse Standoff Voltage (VWM) | 30 V - matches nominal 24 V DC systems with margin for ripple and transients |
| Breakdown Voltage (V(BR)) | 33.3–36.8 V @ 5 mA - ensures reliable conduction onset above operating voltage |
| Max Clamping Voltage (VC) | 48.8 V @ 738 A - limits downstream IC stress during worst-case surge events |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Steady-State Power Dissipation | 2.5 W @ TA = 25°C - supports continuous leakage management in ambient conditions |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required, simplifies SMT handling and storage |
Pinout & Package
MAPLAD36KP30A uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), matte-tin plated terminals, and cathode terminal on the metal base (underside). The device has two terminals: anode and cathode - with cathode electrically connected to the exposed metal base for thermal and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line (e.g., 24 V rail); current flows into anode during clamping |
| Cathode (metal base) | Reference/ground terminal | Electrically and thermally tied to PCB ground plane or heatsink; defines clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW surge rating with 10/1000 μs waveform | Validated for multi-stroke lightning per RTCA DO-160 Section 22, enabling aircraft avionics survivability |
| AEC-Q101 qualified | Guarantees reliability under automotive temperature cycling, mechanical shock, and humidity testing |
| Metal-base cathode construction | Reduces thermal resistance to 1.0 °C/W, allowing direct mounting to thermal pads without solder mask |
| RoHS-compliant (e3 marking) | Meets global environmental regulations without compromising surge performance or thermal behavior |
| Traceable wafer and assembly lots | Supports full lot-level quality audits and failure analysis for aerospace and defense programs |
Applications
| Aerospace Avionics Power Input | Automotive 24 V Load Dump Protection |
|---|---|
Use Scenario: Protecting flight control unit power inputs against induced lightning transients on aircraft wiring harnesses. IC Role / Device Role / Timing Role: Primary secondary surge suppression device placed at board-level power entry, clamping transients before they reach DC/DC converters and microcontrollers. Use Value: Enables compliance with RTCA DO-160F Waveform 4 Level 4 and Waveform 5A Level 4, reducing need for redundant protection stages. | Use Scenario: Safeguarding engine control modules (ECMs) during alternator load dump events in commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed across 24 V supply rails to absorb 120 V/400 ms transients per ISO 7637-2 Pulse 5a. Use Value: Clamps peak voltage to ≤48.8 V at 738 A, preventing damage to 36 V-rated downstream regulators and CAN transceivers. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Shielding PLC I/O power rails from switching-induced transients generated by VFDs and contactors. IC Role / Device Role / Timing Role: Board-level transient suppressor on 24 V auxiliary power distribution, responding within <100 ps to sub-microsecond spikes. Use Value: Withstands repetitive surges at 0.05% duty factor, extending service life in high-noise factory environments. | Use Scenario: Protecting track-side signaling electronics from EFT and lightning-induced surges on 30 V DC telemetry lines. IC Role / Device Role / Timing Role: Secondary protection element compliant with IEC 61000-4-5 Class 4 (42 Ω source) for long-distance field wiring. Use Value: Delivers 48.8 V clamping at 738 A, ensuring signal integrity for RS-485 interfaces operating up to 1 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ30A | Lower PPP rating (400 W), smaller SMA package, higher RθJA (50 °C/W), no AEC-Q101 or DO-160 validation | Suitable for consumer-grade 24 V systems; not rated for multi-stroke lightning or automotive qualification | Select SMAJ30A only for cost-sensitive, non-safety-critical applications where surge energy is below 500 J. |
| Vishay V26MLA0603NH | MLV-based (not avalanche diode), 26 V VWM, 150 J energy rating, slower response (>500 ps), no thermal base | Used in telecom power supplies; lacks DO-160 or AEC-Q101 certification and cannot meet 36 kW peak demands | V26MLA0603NH is appropriate for lower-energy ESD/EFT suppression but cannot replace MAPLAD36KP30A in lightning-prone or automotive load-dump scenarios. |
Compared with SMAJ30A and V26MLA0603NH, the MAPLAD36KP30A uniquely combines 36 kW pulse power, AEC-Q101 qualification, DO-160 compliance, and metal-base thermal design - making it the only viable option for certified aerospace and heavy-duty automotive surge protection where single-event energy exceeds 1 kJ.
Availability
MAPLAD36KP30A is available at Aetrix Electronics and suitable for aerospace avionics, commercial vehicle ECUs, and industrial motor drive systems requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP30A 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets - emphasizing radiation tolerance, surge resilience, and long-lifecycle assurance.
The MAPLAD36KP30A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical platforms where failure is not an option.
FAQ
What is the maximum clamping voltage of the MAPLAD36KP30A at its rated peak pulse current?
The MAPLAD36KP30A has a maximum clamping voltage (VC) of 48.8 V at its rated peak pulse current (IPP) of 738 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 48.8 V during worst-case surge events - critical for protecting 36 V-rated DC/DC controllers and interface ICs in 24 V systems.
Is the MAPLAD36KP30A qualified to AEC-Q101 and certified for RTCA DO-160 lightning testing?
Yes, the MAPLAD36KP30A is fully AEC-Q101 qualified and validated for RTCA DO-160F Section 22 lightning-induced transient testing. It meets Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 requirements when mounted per the specified pad layout - confirming suitability for automotive and aerospace applications demanding rigorous environmental and surge resilience.
How is thermal management implemented for the MAPLAD36KP30A in high-power surge events?
The MAPLAD36KP30A uses a metal-base cathode construction to achieve a junction-to-case thermal resistance of just 1.0 °C/W. During surge events, heat is conducted directly from the die through the metal base into the PCB copper pour or external heatsink. This design eliminates reliance on solder joints for thermal transfer and allows sustained operation under repetitive 0.05% duty-cycle surges without thermal runaway.
Does the MAPLAD36KP30A require moisture-sensitive handling or dry-pack packaging?
No, the MAPLAD36KP30A is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry-pack packaging or floor-life controls. This simplifies SMT assembly logistics and eliminates bake-out steps prior to reflow - a key advantage for high-volume manufacturing of aerospace and automotive electronics.
What is the polarity configuration and physical orientation requirement for MAPLAD36KP30A mounting?
The MAPLAD36KP30A is unidirectional, with the cathode located on the metal base (underside) and the anode on the top-side metallization. Correct orientation requires the metal base to be soldered directly to a grounded copper area - ensuring both electrical reference and thermal path integrity. Reversing polarity will prevent clamping and may cause catastrophic failure during overvoltage events.
MAPLAD36KP30A 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):
- 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:
- 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
MAPLAD36KP30A FAQ
1.How can I place an order for MAPLAD36KP30A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP30A 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 MAPLAD36KP30A reliable?
The price and inventory of MAPLAD36KP30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP30A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP30A?
MAPLAD36KP30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP30A 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 MAPLAD36KP30A?
For technical support, including MAPLAD36KP30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP30A requirements.
6.How does Aetrix verify that MAPLAD36KP30A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP30A 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 MAPLAD36KP30A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP30A?
All MAPLAD36KP30A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP30A, 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 MAPLAD36KP30A part is unused and in its original packaging.
Return procedure for MAPLAD36KP30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP30A Tags
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