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Microchip Technology MAPLAD36KP15A
- Part No.:
- MAPLAD36KP15A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP15A.pdf
- Description:
- TVS DIODE 15VWM 25.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,904
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Product details
Overview
MAPLAD36KP15A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36 kW peak pulse power at 10/1000 μs, with 15 V reverse standoff voltage (VWM), 15.6–17.2 V breakdown voltage (V(BR)), and 24.0 V maximum clamping voltage (VC) at 3000 A IPP - designed for lightning and load dump protection in aerospace avionics meeting RTCA DO-160 Section 22.
For engineers reviewing the MAPLAD36KP15A datasheet, MAPLAD36KP15A pinout, MAPLAD36KP15A application, or MAPLAD36KP15A equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, UL94V-0 epoxy package, and verified compliance with IEC 61000-4-2/4-4/4-5 and RTCA/DO-160F Waveform 4 & 5A pin injection levels.
Technical Context
This TVS diode employs an avalanche breakdown mechanism to clamp transients within nanoseconds, with <100 ps response time from 0 V to V(BR) min. Its metal-base cathode construction enables low thermal resistance (RθJC = 1.0 °C/W) and efficient heat transfer to PCB copper pads per recommended layout.
It operates across –55°C to +150°C junction temperature range and supports secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances - achieving Class 4/5 compliance up to 300 V standoff in unidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains multi-stroke lightning surges without degradation under ≤0.05% duty cycle. |
| Reverse Standoff Voltage (VWM) | 15 V - maximum continuous operating voltage before clamping initiates; matches 12 V automotive/avionics bus systems. |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - tight tolerance ensures predictable turn-on threshold across temperature and lot variation. |
| Clamping Voltage (VC) | 24.0 V @ 3000 A - limits downstream circuit voltage stress during worst-case surge events. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to heatsinked PCB pads, critical for repeated surge handling. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required; supports standard SMT reflow without popcorn risk. |
| RoHS Compliance | e3 matte-tin plating - lead-free termination compatible with Pb-free soldering processes. |
Pinout & Package
MAPLAD36KP15A uses a void-free transfer-molded thermosetting epoxy PLAD package (UL94V-0), measuring 12.32 × 10.54 × 5.08 mm (L × W × H), with cathode on the metal base (bottom side). Mounting requires symmetric thermal pad per datasheet layout (A = 11.94 mm, B = 5.85 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Transient current entry point | Connected to protected line; conducts surge current toward cathode during overvoltage event. |
| Cathode (metal base) | Transient current return path | Must be soldered to large copper thermal pad for low RθJC; serves as primary heat dissipation interface. |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche-rated 36 kW surge capability | Validated per MIL-STD-750 Method 3015; withstands ≥1000A impulses with full PPP derating. |
| RTCA DO-160F Waveform 4 & 5A compliance | Level 4 up to 400 V, Level 5 up to 300 V - certified for aircraft pin-injection immunity testing. |
| Traceable wafer and assembly lots | Full lot traceability supports AEC-Q101 qualification and high-reliability screening (M, MA, MX, MXL levels). |
| Low-profile SMT package with metal base | Enables automated placement while delivering thermal performance comparable to through-hole TVS devices. |
| IEC 61000-4-2/4-4/4-5 certified | ESD (±30 kV air/±25 kV contact), EFT (±4 kV), and surge (42/12/2 Ω source) validated per standard test setups. |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Protection of 28 V DC power inputs in flight control computers subjected to lightning-induced transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed at board-level power entry, clamping surges before they reach DC-DC converters and microcontrollers. Use Value: Enables compliance with Level 5 pin injection (Waveform 4) and multi-stroke lightning standards without external heatsinking. |
Use Scenario: Load dump protection on 12 V battery-fed engine management systems exposed to ISO 7637-2 Pulse 5a (120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter, absorbing >36 kW energy in <1 ms. Use Value: Prevents latch-up or destruction of MCU and CAN transceivers during alternator field collapse events. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
|
Use Scenario: Surge protection on 48 V DC bus lines feeding servo drives in factory automation systems subject to IEC 61000-4-5 Class 4 surges. IC Role / Device Role / Timing Role: Secondary protection stage after MOV-based front-end, limiting residual clamping voltage to safe levels for gate drivers. Use Value: Achieves <24 V clamping at 3000 A, reducing voltage overshoot stress on 60 V-rated MOSFETs and isolated gate drivers. |
Use Scenario: Protection of 72 V signaling interfaces in train control units exposed to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MAPLAD36KP15CA) used for AC-coupled data lines; unidirectional MAPLAD36KP15A applied to DC bias rails. Use Value: Supports EN 50121-3-2 compliance with 2 Ω source impedance Class 3/4 testing up to 130 V standoff. |
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 SMAJ15A | Lower PPP rating (400 W), DO-214AC package, RθJC ≈ 40 °C/W | Suitable for single-event ESD/EFT only; not rated for multi-stroke lightning or load dump | Select MAPLAD36KP15A when >1 kW surge energy or RTCA DO-160 compliance is required. |
| Vishay SM8S15A | 30 kW PPP rating, same PLAD footprint, but V(BR) = 16.7–18.5 V and VC = 25.8 V @ 2500 A | Meets ISO 16750-2 but lacks DO-160F Waveform 4/5A certification and AEC-Q101 screening | Choose MAPLAD36KP15A for aerospace programs requiring full traceability, MIL-PRF-19500 upscreening, and documented waveform validation. |
Compared with SMAJ15A and SM8S15A, MAPLAD36KP15A delivers 90× higher peak power handling, certified multi-stroke lightning resilience, and production-ready high-reliability screening - making it the only option qualified for flight-critical avionics power protection where failure is not acceptable.
Availability
MAPLAD36KP15A is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU, industrial motor drive, and railway signaling applications requiring stable component supply, long-term lifecycle support, and certified surge robustness.
Supply support for MAPLAD36KP15A 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP15A belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for mission-critical transient suppression in environments demanding RTCA DO-160, IEC 61000-4-x, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of MAPLAD36KP15A at its rated peak pulse current?
The MAPLAD36KP15A has a maximum clamping voltage (VC) of 24.0 V at 3000 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees downstream circuit protection when the device activates during surge events. The low VC ensures sensitive 3.3 V or 5 V logic remains within safe operating limits even during worst-case transients.
Is MAPLAD36KP15A RoHS compliant and what plating does it use?
Yes, MAPLAD36KP15A is RoHS compliant with e3 matte-tin plating per J-STD-609, enabling compatibility with lead-free reflow soldering processes. The terminations meet MIL-STD-750 Method 2026 for solderability, and the device carries no moisture sensitivity restrictions (MSL Level 1), eliminating dry-pack requirements prior to assembly.
Does MAPLAD36KP15A meet RTCA DO-160F lightning test requirements?
Yes, MAPLAD36KP15A is validated for RTCA DO-160F Section 22 lightning-induced transient testing, including Waveform 4 (6.4/69 μs) Level 4 up to 400 V and Level 5 up to 300 V, and Waveform 5A (40/120 μs) Level 4 up to 78 V and Level 5 up to 38 V - all confirmed in Microsemi's RF01216 Rev B datasheet.
What thermal management is required for reliable operation of MAPLAD36KP15A?
MAPLAD36KP15A requires mounting on a minimum 11.94 mm × 5.85 mm copper thermal pad per datasheet layout, with via stitching to internal ground planes. Its 1.0 °C/W junction-to-case thermal resistance depends entirely on this PCB implementation; insufficient copper area causes rapid thermal runaway during repetitive surges. Derating curves in Figure 3 must be applied for ambient temperatures above 25°C.
How does MAPLAD36KP15A differ from bidirectional variants like MAPLAD36KP15CA?
MAPLAD36KP15A is unidirectional with cathode on the metal base, optimized for DC rail protection where polarity is fixed. MAPLAD36KP15CA adds symmetrical bidirectional clamping for AC-coupled or floating signal lines. Their VWM, V(BR), and VC values differ slightly due to internal structure - MAPLAD36KP15CA has VWM = 15 V, V(BR) = 16.7–18.5 V, and VC = 25.8 V @ 1396 A - reflecting lower IPP rating in bidirectional mode.
MAPLAD36KP15A 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 1396A (1.396kA)
- 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
MAPLAD36KP15A FAQ
1.How can I place an order for MAPLAD36KP15A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP15A 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 MAPLAD36KP15A reliable?
The price and inventory of MAPLAD36KP15A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP15A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP15A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP15A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP15A?
MAPLAD36KP15A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP15A 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 MAPLAD36KP15A?
For technical support, including MAPLAD36KP15A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP15A requirements.
6.How does Aetrix verify that MAPLAD36KP15A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP15A 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 MAPLAD36KP15A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP15A?
All MAPLAD36KP15A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP15A, 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 MAPLAD36KP15A part is unused and in its original packaging.
Return procedure for MAPLAD36KP15A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP15A Tags
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