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Microchip Technology MAPLAD18KP200CA
- Part No.:
- MAPLAD18KP200CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP200CA.pdf
- Description:
- TVS DIODE 200VWM 322VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,973
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Product details
Overview
MAPLAD18KP200CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤322 V under 322 A peak impulse current, and features a 200 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (222–245 V). It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD18KP200CA datasheet, MAPLAD18KP200CA pinout, MAPLAD18KP200CA application, or MAPLAD18KP200CA equivalent, key selection criteria include its bidirectional polarity, 200 V VWM rating, 322 A IPP capability, IEC 61000-4-5 Class 4/5 secondary lightning compliance, and suitability for aircraft avionics and 24/48 V DC bus protection where low-profile SMT mounting and thermal resistance <0.7 °C/W are critical.
Technical Context
The MAPLAD18KP200CA operates as a silicon avalanche diode-based TVS, leveraging controlled breakdown across both polarities to clamp transients symmetrically. Its design targets fast response (<5 ns), low clamping ratio (VC/VWM ≈ 1.61), and stable temperature coefficient (αV(BR) = 243 mV/°C), enabling predictable performance across -55°C to +150°C junction range.
It is engineered for high-reliability mounting on FR4 PCBs using recommended pad layout (12.32 × 10.54 mm footprint), with thermal resistance junction-to-case of 0.7 °C/W and junction-to-ambient of 50 °C/W. Surge testing per IEC 61000-4-2/4-4/4-5 and RTCA DO-160F Waveform 4/5A is performed with full lot traceability and 3σ screening on standby current (ID).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 200 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) min/max | 222–245 V @ I(BR) - Ensures reliable avalanche initiation within defined tolerance band at test current. |
| VC @ IPP | ≤322 V @ 322 A - Clamping voltage limits downstream circuit stress during worst-case 10/1000 μs surge. |
| PPP | 18,000 W @ 10/1000 μs - Enables single-device protection against lightning-induced surges per DO-160 Section 22. |
| ID @ VWM | ≤10 μA - Ultra-low leakage preserves system efficiency in high-impedance bias networks. |
| RθJC | 0.7 °C/W - Allows direct thermal coupling to heatsink or copper pour for sustained multi-pulse operation. |
| Polarity | Bidirectional - Provides symmetrical clamping for AC-coupled or floating signal/power lines. |
Pinout & Package
MAPLAD18KP200CA uses a proprietary surface-mount plastic package (PLAD) with metal base cathode contact. Dimensions: 12.32 × 10.54 × 5.33 mm (L × W × H), weight ≈1 g, UL94V-0 compliant epoxy body, matte-tin plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Transient Current Entry (Positive Polarity) | Accepts positive-going surge; forms one half of bidirectional clamping path. |
| Cathode (Metal Base) | Transient Current Return / Heat Sink Interface | Serves as primary thermal conduction path to PCB copper; electrically common to both polarities in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC lines, differential buses, or ungrounded systems without polarity constraints. |
| 18 kW peak pulse rating | Meets RTCA DO-160 Section 22 multi-stroke lightning standard without external derating. |
| 0.7 °C/W RθJC | Supports >100 pulses at 1 Hz with <10°C junction rise when mounted on ≥20 cm² 2 oz copper. |
| IEC 61000-4-5 Class 4/5 compliance | Validated for 42 Ω source impedance testing up to 4 kV, covering industrial and avionics secondary protection tiers. |
| AEC-Q101 qualification | Confirms robustness for automotive 12/24 V power net applications including load dump and ISO 7637-2. |
Applications
| Avionics Lightning Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and 28 V DC power inputs in commercial aircraft against DO-160 Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Primary bidirectional TVS clamping transients before they reach interface ICs or power converters. Use Value: Eliminates need for discrete series impedance or secondary clamping stages due to 18 kW rating and <5 ns response. | Use Scenario: Safeguarding engine control units (ECUs) and infotainment head units during alternator load dump events in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing up to 120 V/100 ms transients while maintaining <10 μA leakage at nominal bus voltage. Use Value: Prevents latch-up or overvoltage damage to microcontrollers and CAN transceivers without affecting quiescent current budget. |
| Industrial DC Power Bus Protection | Renewable Energy Inverter DC Link |
Use Scenario: Securing 48 V telecom rectifier outputs and PLC I/O modules against induced RFI and switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: High-power SMT TVS placed at board edge to shunt surges before entering regulation stage. Use Value: Achieves IEC 61000-4-4 EFT immunity up to 4 kV with no derating required at 25°C ambient. | Use Scenario: Protecting DC link capacitors and gate drivers in solar string inverters exposed to grid-side lightning surges and rapid PV array voltage transients. IC Role / Device Role / Timing Role: Bidirectional clamping device rated for 200 V VWM, handling repetitive 10/1000 μs surges up to 322 A. Use Value: Extends capacitor lifetime by limiting voltage overshoot to ≤322 V, reducing dielectric stress by >35% vs. 270 V-rated alternatives. |
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 SMAJ200CA | 600 W PPP rating, 200 V VWM, SMA package, RθJA = 40 °C/W, IPP = 21.2 A | Lower energy handling; suitable only for single-event ESD/EFT, not multi-stroke lightning. | Select when cost sensitivity outweighs surge endurance; requires parallel staging for DO-160 compliance. |
| Vishay V200CH8 | 1500 W PPP, 200 V VWM, DO-214AB package, VC = 324 V @ 21.2 A, RθJC = 3.5 °C/W | Limited to Class 3 IEC 61000-4-5; insufficient for DO-160 Section 22 multi-pulse duty. | Use where space constraints prevent PLAD footprint; verify thermal margin with forced airflow. |
Compared with MAPLAD18KP200CA, SMAJ200CA and V200CH8 offer identical VWM but lack the 18 kW pulse rating, sub-1 °C/W thermal resistance, and DO-160F Waveform 4/5A validation-making them unsuitable for aerospace-grade lightning protection without architectural redesign.
Availability
MAPLAD18KP200CA is available at Aetrix Electronics and suitable for avionics lightning protection, automotive load dump suppression, and industrial DC power bus protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAPLAD18KP200CA 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.
The MAPLAD18KP200CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection in safety-critical platforms where thermal management, lot traceability, and AEC-Q101/MIL-PRF-19500 screening are mandatory.
FAQ
What is the maximum clamping voltage of MAPLAD18KP200CA at its rated peak pulse current?
The MAPLAD18KP200CA has a maximum clamping voltage (VC) of 322 V when subjected to its rated peak pulse current (IPP) of 322 A under 10/1000 μs waveform conditions. This value is specified in the Electrical Characteristics table of RF01215 Rev B and ensures downstream circuitry remains below safe voltage thresholds during surge events.
Is MAPLAD18KP200CA suitable for RTCA DO-160 Section 22 lightning testing?
Yes, MAPLAD18KP200CA is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing at Level 4 and Level 5 (Waveform 4 and 5A) per the manufacturer's documentation. Its 18,000 W peak pulse power rating and bidirectional construction enable compliance without external derating or staging.
Does MAPLAD18KP200CA require dry pack packaging per J-STD-020B?
No, MAPLAD18KP200CA has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it does not require dry pack packaging or baking prior to reflow soldering. The device is rated for unlimited floor life at standard ambient conditions.
What is the thermal resistance junction-to-case (RθJC) for MAPLAD18KP200CA?
The thermal resistance junction-to-case (RθJC) for MAPLAD18KP200CA is 0.7 °C/W, as confirmed in the Maximum Ratings table of RF01215 Rev B. This low value enables efficient heat transfer from the silicon die to the metal baseplate, supporting high-duty-cycle surge operation when mounted on thermally enhanced PCBs.
How does the bidirectional polarity of MAPLAD18KP200CA affect its use in DC circuits?
The bidirectional polarity of MAPLAD18KP200CA allows symmetrical clamping of both positive and negative transients, making it ideal for protecting floating or AC-coupled nodes-even in DC systems like avionics 28 V buses. Unlike unidirectional TVS diodes, MAPLAD18KP200CA does not require polarity-aware placement and avoids forward conduction issues during negative excursions.
MAPLAD18KP200CA 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):
- 200V
- Voltage - Breakdown (Min):
- 222V
- Voltage - Clamping (Max) @ Ipp:
- 322V
- Current - Peak Pulse (10/1000µs):
- 56A
- Power - Peak Pulse:
- 18000W (18kW)
- 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
MAPLAD18KP200CA FAQ
1.How can I place an order for MAPLAD18KP200CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP200CA 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 MAPLAD18KP200CA reliable?
The price and inventory of MAPLAD18KP200CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP200CA is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP200CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP200CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP200CA?
MAPLAD18KP200CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP200CA 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 MAPLAD18KP200CA?
For technical support, including MAPLAD18KP200CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP200CA requirements.
6.How does Aetrix verify that MAPLAD18KP200CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP200CA 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 MAPLAD18KP200CA meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP200CA?
All MAPLAD18KP200CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP200CA, 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 MAPLAD18KP200CA part is unused and in its original packaging.
Return procedure for MAPLAD18KP200CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP200CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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