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Microchip Technology MAPLAD18KP8.0AE3
- Part No.:
- MAPLAD18KP8.0AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP8.0AE3.pdf
- Description:
- TVS DIODE 8VWM 13.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,479
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Product details
Overview
MAPLAD18KP8.0AE3 from Microsemi is a unidirectional 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 ≤13.6 V under 1324 A peak impulse current, and features 7.0 V reverse standoff voltage (VWM), 8.89–9.83 V breakdown voltage (V(BR)), and 0.7 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD18KP8.0AE3 datasheet, MAPLAD18KP8.0AE3 pinout, MAPLAD18KP8.0AE3 application, or MAPLAD18KP8.0AE3 equivalent, key selection criteria include its DO-160F Waveform 4 Level 4 compliance, IEC 61000-4-5 Class 1–5 secondary lightning protection capability, low-profile thermoset epoxy package with metal-base cathode, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This TVS diode employs an avalanche breakdown mechanism to clamp fast-rising transients, with sub-100 ps response time from 0 V to V(BR) min. Its metal-base thermal path enables efficient heat dissipation during multi-stroke events, supporting RTCA DO-160 Section 22 compliance when mounted on FR4 with recommended pad layout.
It operates across –55°C to +150°C junction temperature range and maintains stable clamping performance under 0.05% duty factor impulse repetition. Standby current is screened to 3σ lot norm at VWM, and moisture sensitivity is IPC/JEDEC Level 1-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous operating voltage before conduction begins |
| V(BR) @ I(BR) | 8.89–9.83 V - Minimum voltage at which device enters avalanche breakdown |
| VC @ IPP | 13.6 V max at 1324 A - Clamping voltage limiting downstream circuit stress |
| PPP @ 10/1000 μs | 18,000 W - Peak energy absorption capacity for lightning/surge events |
| RθJC | 0.7 °C/W - Enables direct thermal coupling to heatsink or PCB copper for sustained multi-pulse operation |
| ID @ VWM | 450 μA max - Low leakage preserves system power integrity in standby |
| αV(BR) | 6.0 mV/°C - Predictable voltage drift over temperature for robust design margining |
Pinout & Package
MAPLAD18KP8.0AE3 uses a surface-mount plastic package with void-free UL94V-0 thermosetting epoxy body and tin-lead–free matte-tin plating. The cathode is the metal base (bottom side); anode is top-side metallization. Weight ≈1 g. Dimensions: 12.32 × 10.54 × 3.68 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Transient current entry point for unidirectional clamping | Connected to protected line; conducts surge current toward cathode during overvoltage |
| Cathode (metal base) | Transient current return path and primary thermal interface | Mounted directly to PCB copper pour or heatsink; provides lowest RθJC path for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW peak pulse rating | Supports multi-stroke lightning testing per RTCA DO-160F Section 22 without degradation |
| Metal-base thermal architecture | Reduces thermal resistance to 0.7 °C/W, enabling >1000 pulses at 0.05% duty cycle on FR4 |
| RoHS-compliant e3 plating | Meets J-STD-020B Level 1 moisture sensitivity; no baking or dry pack required pre-reflow |
| DO-160F Waveform 4 Level 4 compliance | Clamps 6.4/69 μs transients to safe levels in avionics pin-injection scenarios at 25°C |
| IEC 61000-4-5 Class 1–5 support | Validated for secondary lightning protection with 42 Ω, 12 Ω, and 2 Ω source impedances |
Applications
| Aerospace Avionics Power Input | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC power input stage of flight control computers subjected to DO-160F Waveform 4 pin injection and Section 22 lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode providing primary transient clamping at board edge before DC-DC converters. Use Value: Limits transient voltage to ≤13.6 V while absorbing 18 kW pulses, preventing latch-up or damage to downstream ASICs and FPGAs. | Use Scenario: 12 V/24 V battery-fed ECU power rail exposed to ISO 7637-2 load dump transients up to 120 V. IC Role / Device Role / Timing Role: High-power TVS placed between battery feed and input filter capacitor to shunt surge energy away from regulators. Use Value: Clamps 1324 A peak current within 100 ps, maintaining <14 V rail excursion and protecting 5 V/3.3 V logic supplies. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: DC bus of 400 V industrial servo drives subject to IGBT switching-induced transients and induced RFI. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back configuration) across bus rails. Use Value: Suppresses repetitive 10/1000 μs transients up to 18 kW without thermal runaway, extending capacitor and gate driver lifetime. | Use Scenario: 75 V signaling lines in EN 50121-4-compliant railway trackside electronics exposed to EFT and surge coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on data/power interface to meet IEC 61000-4-4 (EFT) and -4-5 (surge) immunity requirements. Use Value: Provides 450 μA max leakage at 7.0 V VWM, ensuring signal integrity while clamping 1324 A surges to <13.6 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | 600 W PPP rating, 10× lower peak power; SMB package; RθJC = 15 °C/W | Not suitable for DO-160F multi-stroke or IEC 61000-4-5 Class 4/5; limited to consumer/industrial single-event use | Select only for cost-sensitive, low-energy applications where 18 kW capability is unnecessary |
| SMCJ8.0A | 1500 W PPP rating; SMC package; RθJC = 2.5 °C/W; no DO-160F qualification | Lacks RTCA/DO-160F Waveform 4 Level 4 validation and multi-stroke endurance data | Acceptable for non-aerospace industrial surge suppression where full qualification is not mandated |
Compared with SMBJ8.0A and SMCJ8.0A, MAPLAD18KP8.0AE3 delivers 30× and 12× higher peak pulse power respectively, with certified DO-160F and IEC 61000-4-5 compliance, metal-base thermal architecture, and lot-traceable high-reliability screening-making it uniquely suited for mission-critical aerospace and defense platforms.
Availability
MAPLAD18KP8.0AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle assurance, and qualified high-reliability parts.
Supply support for MAPLAD18KP8.0AE3 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 RF semiconductors for aerospace, defense, communications, and industrial markets.
The MAPLAD18KP8.0AE3 belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for certified lightning and load-dump protection in safety-critical systems.
FAQ
What is the clamping voltage of MAPLAD18KP8.0AE3 at its rated peak pulse current?
The MAPLAD18KP8.0AE3 has a maximum clamping voltage (VC) of 13.6 V at its peak pulse current (IPP) of 1324 A under 10/1000 μs waveform conditions. This value is guaranteed across temperature and ensures downstream components remain within safe operating voltage limits during surge events.
Is MAPLAD18KP8.0AE3 qualified for RTCA DO-160F Section 22 lightning testing?
Yes, MAPLAD18KP8.0AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Its 18,000 W peak pulse power rating, metal-base thermal design, and sub-100 ps response time enable reliable performance across repeated 10/1000 μs surges without parameter shift or failure.
Does MAPLAD18KP8.0AE3 require dry packing or baking before reflow soldering?
No, MAPLAD18KP8.0AE3 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is exempt from dry pack requirements and does not need baking prior to reflow. Its void-free UL94V-0 epoxy body and e3 RoHS-compliant plating ensure robust manufacturability.
How is thermal management implemented in MAPLAD18KP8.0AE3?
MAPLAD18KP8.0AE3 uses a metal-base package where the cathode serves as both electrical return and primary thermal interface. With a junction-to-case thermal resistance of 0.7 °C/W, it must be soldered to a large copper pour or heatsink to maintain TJ ≤150°C during multi-pulse operation per Figure 3 derating curve.
What is the polarity configuration and marking convention for MAPLAD18KP8.0AE3?
MAPLAD18KP8.0AE3 is unidirectional (denoted by "A" suffix), with the cathode on the metal base (bottom side) and anode on the top metallization. Polarity is marked on the body per standard Microsemi conventions; orientation must be verified using the pad layout in RF01215 Rev B to ensure correct PCB placement.
MAPLAD18KP8.0AE3 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):
- 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
MAPLAD18KP8.0AE3 FAQ
1.How can I place an order for MAPLAD18KP8.0AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP8.0AE3 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 MAPLAD18KP8.0AE3 reliable?
The price and inventory of MAPLAD18KP8.0AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP8.0AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP8.0AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP8.0AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP8.0AE3?
MAPLAD18KP8.0AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP8.0AE3 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 MAPLAD18KP8.0AE3?
For technical support, including MAPLAD18KP8.0AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP8.0AE3 requirements.
6.How does Aetrix verify that MAPLAD18KP8.0AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP8.0AE3 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 MAPLAD18KP8.0AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP8.0AE3?
All MAPLAD18KP8.0AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP8.0AE3, 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 MAPLAD18KP8.0AE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP8.0AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP8.0AE3 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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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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