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Microchip Technology MAPLAD36KP300CA
- Part No.:
- MAPLAD36KP300CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP300CA.pdf
- Description:
- TVS DIODE 300VWM 483VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,487
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Product details
Overview
MAPLAD36KP300CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps transients to ≤483 V at 75 A peak impulse current, and features a 300 V reverse standoff voltage (VWM) with ±5% breakdown voltage tolerance (333–369 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Level 5 pin injection for Waveform 4.
For engineers reviewing the MAPLAD36KP300CA datasheet, MAPLAD36KP300CA pinout, MAPLAD36KP300CA application, or MAPLAD36KP300CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω source), multi-stroke DO-160 compliance, and high-reliability ESD/EFT suppression in avionics power rails and vehicle ECUs where thermal resistance minimization and RoHS-compliant packaging are critical.
Technical Context
The MAPLAD36KP300CA employs an avalanche diode structure optimized for low clamping ratio and fast response (<5 ns), enabling effective suppression of induced RFI and switching transients. Its metal-base package provides direct thermal path to PCB copper, achieving 1.0 °C/W junction-to-case thermal resistance.
It operates across –55 °C to +150 °C junction temperature range and supports bidirectional conduction with symmetrical clamping behavior. Standby leakage is limited to 10 μA at 300 V VWM, and it passes full-surge testing per MIL-STD-750 Method 2026.
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 |
| Reverse Standoff Voltage (VWM) | 300 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 333–369 V @ 5 mA - ensures reliable turn-on margin above operating rail |
| Max Clamping Voltage (VC) | 483 V @ 75 A - limits downstream component stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour |
| Standby Leakage Current (ID) | 10 μA @ 300 V - negligible power loss in always-on systems |
| Clamping Response Time | <5 ns - captures fast-rising transients before IC damage occurs |
Pinout & Package
MAPLAD36KP300CA uses a thermally enhanced PLAD (Plastic Low-Profile Anode-Diode) surface-mount package with metal base acting as cathode terminal. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ~1.85 g. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (Bidirectional Common Terminal) | Serves as primary thermal interface and current return path; must be soldered to large copper area for thermal management |
| Top Surface Pad | Anode (Bidirectional Common Terminal) | Provides symmetrical conduction path; connects to protected line (e.g., 28 V aircraft bus or CAN-H) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Surge Suppression | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN, MIL-STD-1553) without polarity concerns |
| AEC-Q101 Qualified | Validated for automotive under-hood environments including temperature cycling, mechanical shock, and humidity exposure |
| RTCA DO-160F Level 5 Compliance | Meets stringent airborne equipment requirements for pin injection (Waveform 4, 6.4/69 μs) up to 300 V VWM devices |
| Low Thermal Resistance (1.0 °C/W) | Reduces junction temperature rise by >50% vs. standard SMD TVS, extending lifetime under repetitive surge conditions |
| RoHS Compliant (e3 plating) | Tin-lead-free matte-tin terminations ensure compatibility with lead-free reflow profiles and long-term solder joint reliability |
Applications
| Aircraft Power Distribution Units | Automotive Engine Control Units |
|---|---|
Use Scenario: Protection of 28 V DC main bus against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary secondary-level TVS clamp on main power input, placed upstream of DC-DC converters. Use Value: Withstands ≥500 multi-stroke 36 kW surges while maintaining clamping voltage below 483 V, preventing MOSFET gate oxide failure in downstream regulators. |
Use Scenario: Load dump suppression on 12 V battery-fed engine control module inputs after alternator regulation failure. IC Role / Device Role / Timing Role: High-power transient shunt placed at ECU connector interface to divert 120 V/400 ms transients. Use Value: Limits peak voltage to 483 V within 5 ns, protecting 5 V microcontroller I/O and sensor signal conditioning circuits rated to 36 V abs max. |
| Industrial Motor Drive Gate Drivers | Railway Signaling Interfaces |
Use Scenario: IGBT gate drive line protection against cross-talk and inductive kickback in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional clamp between gate and source, referenced to isolated power rail. Use Value: Sub-5 ns response prevents false turn-on due to dV/dt spikes; 300 V standoff avoids conduction during normal 15 V gate swing. |
Use Scenario: Ethernet PHY interface protection on train communication networks exposed to traction-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on RJ45 magnetics secondary side, guarding 100BASE-TX differential pairs. Use Value: Symmetrical clamping maintains signal integrity across both data lines; 483 V VC ensures PHY ICs (e.g., DP83848) remain within safe operating area. |
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 SMAJ300CA | Lower PPP rating (3,000 W), smaller SMC package (RθJC = 12.5 °C/W), 300 V VWM, bidirectional | Not suitable for DO-160 Level 5 or IEC 61000-4-5 Class 4/5; limited to single-stroke industrial surges | Select when cost and board space constrain requirements and surge energy remains below 3 kW |
| Vishay V280MLA0603NH | Multi-layer varistor (MLV), 280 V VWM, 6 kA 8/20 μs rating, 121 V clamping at 100 A, 0603 footprint | Higher capacitance (~300 pF) limits use in high-speed data lines; lower clamping voltage but no DO-160 qualification | Prefer for compact consumer-grade ESD/EFT protection where low clamping voltage outweighs surge repetition capability |
Compared with SMAJ300CA and V280MLA0603NH, the MAPLAD36KP300CA delivers 12× higher peak power handling, certified aerospace qualification, and metal-base thermal performance essential for sustained surge duty cycles - making it irreplaceable in mission-critical avionics and heavy-duty automotive systems.
Availability
MAPLAD36KP300CA is available at Aetrix Electronics and suitable for aircraft power distribution, automotive engine control units, and industrial motor drive designs requiring stable component supply with full traceability and long-lifecycle support.
Supply support for MAPLAD36KP300CA 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP300CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and load-dump immunity in safety-critical platforms where thermal robustness and qualification rigor are non-negotiable.
FAQ
What is the clamping voltage of MAPLAD36KP300CA at its rated peak pulse current?
The MAPLAD36KP300CA exhibits a maximum clamping voltage (VC) of 483 V at 75 A peak impulse current under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The clamping voltage remains stable across temperature and repeated strikes due to the device's low dynamic impedance and metal-base thermal design.
Is MAPLAD36KP300CA qualified for automotive applications?
Yes, MAPLAD36KP300CA is AEC-Q101 qualified, confirming its suitability for automotive under-hood and powertrain applications. It undergoes stress testing including temperature cycling, mechanical shock, and humidity exposure per the AEC standard. Its 300 V standoff and 483 V clamping align with ISO 7637-2 and SAE J1113-11 load-dump requirements for 24 V systems, and its thermal performance supports operation in engine control modules up to +125 °C ambient.
Does MAPLAD36KP300CA meet RTCA DO-160F lightning test requirements?
Yes, MAPLAD36KP300CA is explicitly rated for RTCA DO-160F Section 22 lightning-induced transient susceptibility and Waveform 4 pin injection (6.4/69 μs) at Level 5 for devices up to 300 V VWM. This certification is documented in the RF01216 datasheet revision B, confirming compliance for aircraft power buses and avionics interfaces where multi-stroke survivability and low clamping latency are mandatory.
What is the thermal resistance and recommended mounting for MAPLAD36KP300CA?
MAPLAD36KP300CA has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, achieved via direct metal-base contact. It must be mounted on a minimum 1.0 in² (645 mm²) copper pad per the recommended pad layout in RF01216, using SnPb or RoHS-compliant reflow. Thermal vias beneath the base are strongly advised to route heat into inner layers, especially in high-duty-cycle surge environments.
How does the bidirectional construction of MAPLAD36KP300CA affect its circuit integration?
The bidirectional construction of MAPLAD36KP300CA allows symmetric clamping on AC-coupled or differential signal lines without polarity constraints. Unlike unidirectional TVS diodes, it conducts equally for positive and negative transients - ideal for protecting CAN bus, RS-485, or MIL-STD-1553 interfaces. Its metal base serves as common terminal, simplifying layout and eliminating need for dual-device configurations.
MAPLAD36KP300CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 483V
- Current - Peak Pulse (10/1000µs):
- 75A
- 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
MAPLAD36KP300CA FAQ
1.How can I place an order for MAPLAD36KP300CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP300CA 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 MAPLAD36KP300CA reliable?
The price and inventory of MAPLAD36KP300CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP300CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP300CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP300CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP300CA?
MAPLAD36KP300CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP300CA 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 MAPLAD36KP300CA?
For technical support, including MAPLAD36KP300CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP300CA requirements.
6.How does Aetrix verify that MAPLAD36KP300CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP300CA 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 MAPLAD36KP300CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP300CA?
All MAPLAD36KP300CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP300CA, 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 MAPLAD36KP300CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP300CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP300CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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