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Microchip Technology MAPLAD18KP8.0CAE3
- Part No.:
- MAPLAD18KP8.0CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP8.0CAE3.pdf
- Description:
- TVS DIODE 8VWM 13.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,143
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Product details
Overview
MAPLAD18KP8.0CAE3 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 8.0 V reverse standoff voltage (VWM), clamps to ≤13.6 V at 1324 A peak impulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD18KP8.0CAE3 datasheet, MAPLAD18KP8.0CAE3 pinout, MAPLAD18KP8.0CAE3 application, or MAPLAD18KP8.0CAE3 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
This TVS diode uses an avalanche breakdown mechanism to clamp transients rapidly-response time <5 ns-with bidirectional symmetry enabling protection of AC-coupled or differential signal lines without polarity constraints. Its low thermal resistance (RθJC = 0.7 °C/W) and void-free epoxy package support sustained multi-pulse operation under 0.05% duty factor conditions.
Designed for high-reliability environments, MAPLAD18KP8.0CAE3 undergoes 3σ lot norm screening on standby current (ID), full surge testing per AEC-Q101, and optional MIL-PRF-19500 upscreening. It complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity and RoHS Directive 2011/65/EU (e3 marking).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced surges in aircraft avionics and vehicle ECUs |
| Reverse Standoff Voltage (VWM) | 8.0 V - matches nominal 5–8 V DC bus or signal line operating voltages while maintaining margin before clamping |
| Clamping Voltage (VC) | ≤13.6 V @ IPP = 1324 A - ensures downstream ICs rated to 16 V absolute maximum are not overstressed during surge events |
| Breakdown Voltage (V(BR)) | 8.89–9.83 V @ I(BR) - defines precise avalanche onset threshold for predictable, repeatable clamping behavior |
| Standby Current (ID) | ≤450 μA @ VWM - minimizes quiescent power loss and avoids false triggering in low-power sensor interfaces |
| Thermal Resistance (RθJC) | 0.7 °C/W - allows efficient heat transfer to PCB copper pour or heatsink, critical for multi-stroke reliability |
| Response Time | <5 ns - fast enough to protect sensitive analog front-ends and high-speed communication lines from ESD and RFI |
Pinout & Package
MAPLAD18KP8.0CAE3 is housed in a low-profile surface-mount PLAD package (plastic leaded anode-down) with metal base acting as cathode terminal. The device has two terminals: anode and cathode, with polarity marked by cathode identification on the metal bottom surface per Microsemi documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive surge path input | Connected to protected line; conducts during positive transients in bidirectional mode |
| Cathode | Negative surge path input / thermal interface | Mounted to PCB copper pour for thermal conduction; conducts during negative transients; serves as primary heat sink path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Protects AC-coupled data lines (e.g., RS-485, CAN FD) without requiring external polarity management circuitry |
| 18 kW PPP rating @ 10/1000 μs | Meets RTCA DO-160 Section 22 Level 4 multi-stroke lightning test without derating on FR4 with recommended pad layout |
| RoHS-compliant e3 finish | Enables use in environmentally regulated aerospace and automotive supply chains without exemption requests |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control modules and ADAS power domains |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and handling risk |
Applications
| Aircraft Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC power distribution networks in flight control computers and navigation units from induced lightning currents per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary secondary surge protector placed upstream of DC-DC converters and LDOs. Use Value: Clamps transients to ≤13.6 V within 5 ns, preventing latch-up or permanent damage to 16 V-rated power management ICs during repeated 18 kW surges. |
Use Scenario: Safeguarding infotainment head units and body control modules during alternator load dump events (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: High-energy crowbar device across main 12 V rail, absorbing >100 J energy in sub-millisecond duration. Use Value: Withstands 1324 A peak current and maintains VWM = 8.0 V, ensuring compatibility with 5 V logic domains while surviving 120 V transients. |
| Industrial Ethernet PHY Interface Protection | Railway Signaling Data Line Protection |
Use Scenario: Shielding Gigabit Ethernet PHYs (e.g., Marvell 88E1512) on train onboard networks from EFT and induced surges in rolling stock. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pairs (MDI) and common-mode lines, compliant with IEC 61000-4-4 Level 4. Use Value: Symmetrical clamping ensures equal protection on both TX+/− and RX+/− lines without skew, preserving signal integrity up to 1.25 Gbps. |
Use Scenario: Securing 24 V DC signaling lines in European railway interlocking systems against lightning coupling from overhead catenary or track return paths. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), meeting EN 50121-3-2 Class 3 surge immunity. Use Value: 18 kW rating and 42 Ω source impedance compliance allow direct integration into EN 50155-compliant signaling boards without external snubbers. |
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 SMAJ8.0CA | Lower PPP (400 W), smaller SMC package, higher RθJA (60 °C/W), same VWM and bidirectional polarity | Suitable only for single-event, low-duty-cycle consumer-grade protection; cannot meet DO-160 multi-stroke or AEC-Q101 requirements | Select MAPLAD18KP8.0CAE3 when multi-stroke lightning robustness, aerospace qualification, or automotive under-hood thermal performance is required. |
| Vishay SM8S8.0A | Unidirectional only (no CA variant), 6600 W PPP, TO-277 package, no MIL-PRF-19500 upscreening option | Limited to DC-biased circuits; lacks bidirectional symmetry needed for AC-coupled comms lines like RS-422 | Choose MAPLAD18KP8.0CAE3 for bidirectional protection, 18 kW capability, and traceable high-reliability screening in safety-critical systems. |
Compared with SMAJ8.0CA and SM8S8.0A, MAPLAD18KP8.0CAE3 provides three-fold higher peak power, certified multi-stroke endurance, and design-in readiness for aerospace DO-160 and automotive AEC-Q101 programs-enabling single-part qualification across Tier 1 and OEM platforms.
Availability
MAPLAD18KP8.0CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECU power rails, industrial Ethernet PHY interfaces, and railway signaling systems requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD18KP8.0CAE3 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, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The MAPLAD family was developed specifically for high-energy transient suppression in mission-critical platforms where multi-stroke lightning resilience, thermal stability, and long-term parametric consistency are non-negotiable.
FAQ
What is the clamping voltage of MAPLAD18KP8.0CAE3 at its rated peak pulse current?
The clamping voltage (VC) of MAPLAD18KP8.0CAE3 is guaranteed ≤13.6 V at a peak impulse current (IPP) of 1324 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in RF01215 Rev B and ensures safe operation for downstream components rated to 16 V absolute maximum, such as automotive microcontrollers and Ethernet PHYs. MAPLAD18KP8.0CAE3 maintains this clamping performance across its specified temperature range and multi-stroke test cycles.
Does MAPLAD18KP8.0CAE3 meet AEC-Q101 stress test requirements?
Yes, MAPLAD18KP8.0CAE3 is fully tested and qualified to AEC-Q101 standards for discrete semiconductors, including HTGB, HTRB, TST, and surge testing. The device undergoes full surge validation per AEC-Q101-004, with all units 100% surge tested at production. MAPLAD18KP8.0CAE3 also supports optional MIL-PRF-19500 upscreening for enhanced reliability in aerospace applications.
How does the PLAD package of MAPLAD18KP8.0CAE3 improve thermal performance compared to standard SMC packages?
The PLAD package of MAPLAD18KP8.0CAE3 features a metal base that serves as both cathode terminal and primary thermal interface, achieving a junction-to-case thermal resistance (RθJC) of just 0.7 °C/W-over 8× lower than typical SMC packages (~6 °C/W). This enables direct heat transfer to PCB copper pours or heatsinks, sustaining 18 kW pulses with minimal temperature rise and supporting multi-stroke reliability in confined spaces.
Can MAPLAD18KP8.0CAE3 be used for IEC 61000-4-5 surge protection with 2 Ω source impedance?
Yes, MAPLAD18KP8.0CAE3 is explicitly rated for secondary lightning protection per IEC 61000-4-5 with 2 Ω source impedance at Class 2 and Class 3 levels, as confirmed in RF01215 Rev B Table on page 4. Its 1324 A IPP and 13.6 V VC ensure compliance without external series impedance, making it suitable for low-impedance industrial control cabinet inputs and railway signaling interfaces.
What does the "E3" suffix in MAPLAD18KP8.0CAE3 indicate?
The "E3" suffix in MAPLAD18KP8.0CAE3 denotes RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1, eliminating lead content and satisfying EU Directive 2011/65/EU. This finish ensures solderability per MIL-STD-750 Method 2026 and eliminates dry-pack requirements, simplifying manufacturing logistics for global electronics assembly operations using MAPLAD18KP8.0CAE3.
MAPLAD18KP8.0CAE3 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 1324A (1.324kA)
- 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
MAPLAD18KP8.0CAE3 FAQ
1.How can I place an order for MAPLAD18KP8.0CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP8.0CAE3 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 MAPLAD18KP8.0CAE3 reliable?
The price and inventory of MAPLAD18KP8.0CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP8.0CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP8.0CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP8.0CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP8.0CAE3?
MAPLAD18KP8.0CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP8.0CAE3 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 MAPLAD18KP8.0CAE3?
For technical support, including MAPLAD18KP8.0CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP8.0CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP8.0CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP8.0CAE3 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 MAPLAD18KP8.0CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP8.0CAE3?
All MAPLAD18KP8.0CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP8.0CAE3, 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 MAPLAD18KP8.0CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP8.0CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP8.0CAE3 Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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