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Microchip Technology MAPLAD18KP160CA
- Part No.:
- MAPLAD18KP160CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP160CA.pdf
- Description:
- TVS DIODE 160VWM 259VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,295
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Product details
Overview
MAPLAD18KP160CA 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, features a 160 V reverse standoff voltage (VWM), clamps to ≤259 V at 10 A IPP, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements in aircraft avionics.
For engineers reviewing the MAPLAD18KP160CA datasheet, MAPLAD18KP160CA pinout, MAPLAD18KP160CA application, or MAPLAD18KP160CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin injection immunity per RTCA/DO-160F Waveform 4 Level 4, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
The MAPLAD18KP160CA employs an avalanche diode structure optimized for low clamping ratio and fast response (<5 ns), enabling effective suppression of fast-rising transients such as lightning-induced surges and load dump events. Its metal-base thermal design achieves 0.7 °C/W junction-to-case thermal resistance, supporting high-reliability operation under repeated surge stress.
It operates across –55 °C to +150 °C junction temperature range and is qualified to AEC-Q101. Bidirectional construction allows symmetrical clamping for AC-coupled or floating signal lines, with polarity defined by cathode on the metal base - critical for correct PCB layout and thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - sustains full-rated surge energy without degradation in lightning-level protection circuits |
| Reverse Standoff Voltage (VWM) | 160 V - maximum continuous operating voltage before conduction; matches 130–150 V DC bus or 115 VAC-derived rails |
| Clamping Voltage (VC) | 259 V @ 10 A IPP - limits downstream voltage stress to safe levels for 200 V-rated ICs and interfaces |
| Breakdown Voltage (V(BR)) | 178–197 V @ I(BR) - ensures reliable turn-on margin above VWM for stable protection threshold |
| Thermal Resistance (RθJC) | 0.7 °C/W - enables efficient heat transfer to heatsink or copper pour, critical for multi-pulse reliability |
| Surge Current (IPP) | 10 A @ 10/1000 μs - defines maximum single-event current handling capability under standardized waveform |
| Temperature Coefficient (αV(BR)) | 195 mV/°C - quantifies voltage drift over temperature; used to validate protection margin at max operating temp |
Pinout & Package
MAPLAD18KP160CA uses a low-profile, void-free thermosetting epoxy surface-mount package with metal base (cathode) and two solderable terminals. The metal base serves as the cathode terminal and primary thermal path; the top-side anode pad is marked with polarity indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary thermal interface and current return path; must be soldered to large copper area or heatsink |
| Top Anode Pad | Anode | Signal-side connection point; polarity marking on body identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric surge suppression on AC or floating lines without polarity sensitivity |
| RTCA DO-160F Waveform 4 Level 4 compliance | Validated for 6.4/69 μs pin-injection transients up to 160 V VWM devices - required for commercial aircraft data buses |
| AEC-Q101 qualification | Confirms robustness for automotive under-hood applications including load dump and jump-start conditions |
| IEC 61000-4-5 Class 1–5 support (42 Ω) | Meets secondary lightning protection requirements across all severity classes for industrial and transport electronics |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly logistics |
Applications
| Avionics Data Bus Protection | Automotive Power Distribution Module |
|---|---|
Use Scenario: Protecting ARINC 429 or MIL-STD-1553B data lines from induced lightning transients during flight. IC Role / Device Role / Timing Role: Primary TVS clamp placed at connector entry point to shunt surge energy before reaching line drivers/receivers. Use Value: Ensures >100,000 surge cycles without parameter shift, maintaining signal integrity per DO-160 Section 22 multi-stroke testing. | Use Scenario: Safeguarding 12 V/24 V power distribution nodes against load dump spikes up to 120 V. IC Role / Device Role / Timing Role: High-power crowbar element absorbing 18 kW surges while limiting bus voltage to <260 V. Use Value: Prevents latch-up or destruction of downstream PMICs and microcontrollers during alternator disconnection events. |
| Industrial Ethernet Switch Port | Railway Signaling Interface |
Use Scenario: Securing PoE+ (IEEE 802.3at) Ethernet ports against EFT and lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pairs and power lines to meet IEC 61000-4-5 Class 4 (42 Ω). Use Value: Maintains Ethernet link stability under 4 kV surge tests without packet loss or PHY reset. | Use Scenario: Protecting trackside signaling inputs from traction current switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary surge arrestor mounted at cabinet entry, coordinated with upstream MOVs. Use Value: Achieves SIL-2 functional safety compliance by limiting transient overvoltage to <260 V for 24 VDC logic inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CA | 600 W PPP rating, 5.0 mm × 3.5 mm SMB package, RθJC ≈ 25 °C/W | Lower energy handling; suitable only for single-stroke or low-duty-cycle transients | Select when system surge energy is ≤100 J and thermal mass is limited |
| SMCJ160CA | 1500 W PPP rating, 7.1 mm × 6.2 mm SMC package, RθJC ≈ 12 °C/W | Lacks RTCA DO-160F Waveform 4 Level 4 validation and AEC-Q101 qualification | Use where DO-160 or automotive qualification is not required but higher energy than SMBJ is needed |
Compared with SMBJ160CA and SMCJ160CA, MAPLAD18KP160CA provides 30× and 12× higher peak pulse power respectively, validated clamping performance under multi-stroke lightning, and traceable lot-level reliability screening - making it the only option for certified aerospace and high-end automotive surge protection.
Availability
MAPLAD18KP160CA is available at Aetrix Electronics and suitable for avionics, automotive power distribution, industrial Ethernet, and railway signaling applications requiring stable component supply, long-term lifecycle support, and certified surge performance.
Supply support for MAPLAD18KP160CA 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 MAPLAD18KP160CA belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for multi-stroke lightning protection and mission-critical surge immunity in certified transportation electronics.
FAQ
What is the clamping voltage of MAPLAD18KP160CA at its rated peak pulse current?
The MAPLAD18KP160CA has a maximum clamping voltage (VC) of 259 V at 10 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per standard test methods and ensures downstream components see no more than 259 V during a full-rated surge event. The clamping voltage is guaranteed across the full operating temperature range and forms the basis for system-level overvoltage margin analysis in designs using MAPLAD18KP160CA.
Is MAPLAD18KP160CA qualified for automotive applications?
Yes, MAPLAD18KP160CA is qualified to AEC-Q101 for automotive use. It is specifically tested for load dump immunity and high-temperature operation up to +150 °C junction temperature. Its bidirectional construction and 160 V standoff make it suitable for protecting 24 V commercial vehicle power networks and ECUs exposed to jump-start and alternator regulation faults. MAPLAD18KP160CA also supports optional MIL-PRF-19500 upscreening for extended reliability in harsh environments.
How does the metal base of MAPLAD18KP160CA function electrically and thermally?
The metal base of MAPLAD18KP160CA serves as the cathode terminal and primary thermal conduction path. Electrically, it must be connected to the reference ground or return node of the protected circuit. Thermally, it requires direct soldering to a large copper pour or external heatsink to achieve the specified 0.7 °C/W junction-to-case resistance. Failure to provide adequate thermal mass will cause junction temperature rise beyond ratings during repeated surges, degrading long-term reliability of MAPLAD18KP160CA.
Does MAPLAD18KP160CA meet RTCA DO-160F lightning test requirements?
Yes, MAPLAD18KP160CA is validated for RTCA DO-160F Section 22 multi-stroke lightning testing and Waveform 4 (6.4/69 μs) pin injection at Level 4. It is explicitly listed in the datasheet for these tests across the 7.0 V to 200 V VWM range, including MAPLAD18KP160CA. This certification confirms its suitability for commercial aircraft data, power, and sensor interfaces where lightning-induced transients pose critical reliability risks.
What is the moisture sensitivity level (MSL) of MAPLAD18KP160CA and how does it affect handling?
MAPLAD18KP160CA has Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has no floor life limitation and requires no dry pack or baking prior to reflow soldering. This eliminates moisture-related popcorning risk during assembly and simplifies inventory management and SMT line logistics. The MSL-1 rating is achieved through void-free epoxy molding and rigorous process control - a key advantage of MAPLAD18KP160CA in high-reliability manufacturing environments.
MAPLAD18KP160CA 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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 70A
- 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
MAPLAD18KP160CA FAQ
1.How can I place an order for MAPLAD18KP160CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP160CA 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 MAPLAD18KP160CA reliable?
The price and inventory of MAPLAD18KP160CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP160CA is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP160CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP160CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP160CA?
MAPLAD18KP160CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP160CA 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 MAPLAD18KP160CA?
For technical support, including MAPLAD18KP160CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP160CA requirements.
6.How does Aetrix verify that MAPLAD18KP160CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP160CA 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 MAPLAD18KP160CA meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP160CA?
All MAPLAD18KP160CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP160CA, 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 MAPLAD18KP160CA part is unused and in its original packaging.
Return procedure for MAPLAD18KP160CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP160CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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