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Microchip Technology MAPLAD18KP16CAE3
- Part No.:
- MAPLAD18KP16CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP16CAE3.pdf
- Description:
- TVS DIODE 16VWM 26VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,879
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Product details
Overview
MAPLAD18KP16CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps transients to ≤26.0 V at 693 A, and features a 16 V reverse standoff voltage (VWM), 17.8–19.7 V breakdown voltage (V(BR)), and <5 ns response time. It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection and IEC 61000-4-5 Class 1–5 secondary lightning protection.
For engineers reviewing the MAPLAD18KP16CAE3 datasheet, MAPLAD18KP16CAE3 pinout, MAPLAD18KP16CAE3 application, or MAPLAD18KP16CAE3 equivalent, key selection criteria include its bidirectional polarity, 16 V VWM rating, low 0.7 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, and qualification for multi-stroke lightning environments per DO-160 Section 22.
Technical Context
This TVS diode employs an avalanche breakdown mechanism to divert high-current transients away from sensitive circuitry. Its metal-base package provides direct thermal path to PCB copper, enabling efficient heat dissipation during repeated 10/1000 μs surges at ≤0.05% duty factor.
The device operates with bidirectional symmetry, offering identical clamping performance for positive and negative transients. It is characterized at 25 °C with full derating above 100 °C case temperature and supports steady-state power dissipation of 71 W at TC = 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 16 V - maximum continuous operating voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 17.8–19.7 V @ I(BR) - ensures reliable turn-on margin above VWM |
| Max Clamping Voltage (VC) | 26.0 V @ 693 A IPP - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables high-power dissipation via metal base mounting to heatsink or copper plane |
| Response Time | <5 ns - fast enough to protect against EFT and ESD-induced edge transients |
| Steady-State Power (TC = 100 °C) | 71 W - supports continuous thermal management in high-ambient industrial environments |
Pinout & Package
MAPLAD18KP16CAE3 uses a surface-mount PLAD package with metal base cathode termination. The package has two terminals: anode and cathode, where the cathode is the exposed metal base on the bottom surface - requiring thermal pad connection to PCB ground plane or heatsink for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Connected to protected line; conducts during both polarities of surge event |
| Cathode (Metal Base) | Transient current return path & thermal interface | Must be soldered to large copper area or heatsink; serves as primary thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric protection of AC lines or differential buses without polarity constraints |
| 18 kW peak pulse rating | Meets RTCA DO-160 Section 22 multi-stroke lightning requirements for avionics |
| Metal-base thermal design | 0.7 °C/W RθJC allows >70 W steady-state dissipation when mounted per recommended pad layout |
| AEC-Q101 qualification | Validated reliability for automotive load-dump and battery-transient protection applications |
| RoHS-compliant e3 plating | Matte-tin termination ensures solderability and long-term intermetallic stability per MIL-STD-750 |
Applications
| Aerospace Avionics Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and sensor inputs in flight control units against DO-160F Waveform 4 and 5A transients. IC Role / Device Role / Timing Role: Primary transient shunt element placed directly at connector entry point. Use Value: Withstands ≥4 kV pin-injection surges at 6.4/69 μs while limiting clamped voltage to 26.0 V - preserving signal integrity of 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding 12 V battery-fed ECUs during ISO 7637-2 load dump events up to 120 V/400 ms. IC Role / Device Role / Timing Role: Secondary surge clamp parallel to primary TVS or upstream of DC-DC converter input. Use Value: Delivers 693 A peak impulse current handling at 16 V VWM - sufficient to absorb 100 J+ energy without degradation under AEC-Q101 stress conditions. |
| Industrial Motor Drive Inputs | Railway Signaling Interfaces |
Use Scenario: Shielding PLC analog I/O modules from inductive kickback and EFT bursts in factory automation cabinets. IC Role / Device Role / Timing Role: Line-side transient suppressor on 24 V supply rails feeding isolated ADC front-ends. Use Value: 26.0 V clamping voltage ensures downstream LDOs and op-amps remain within absolute maximum ratings during 4 kV EFT (IEC 61000-4-4) events. |
Use Scenario: Securing 72 V DC signaling lines in train control systems against lightning-induced surges per EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional protector on redundant CAN or MVB bus terminations. Use Value: Bidirectional symmetry and 16 V VWM allow use on floating differential pairs without polarity concerns - validated for 2 Ω source impedance Class 2/3 IEC 61000-4-5 testing. |
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 SMAJ16CA | Lower PPP rating (400 W), smaller SMC package, higher RθJA (50 °C/W), no AEC-Q101 or DO-160 qualification | Suitable for consumer-grade board-level ESD/EFT only; not rated for multi-stroke lightning or automotive load dump | Select when cost and footprint are prioritized over aerospace/automotive reliability and energy handling |
| Vishay V18MLA1603 | MLA varistor-based, 18 kA 8/20 μs rating, no defined VWM or clamping spec, unidirectional only, no thermal resistance spec | Used in AC mains filtering; lacks precise DC clamping control and bidirectional symmetry required for data/power rail protection | Select only for non-critical AC surge suppression where voltage precision and polarity independence are not required |
Compared with SMAJ16CA and V18MLA1603, MAPLAD18KP16CAE3 uniquely combines 18 kW pulse power, bidirectional symmetry, AEC-Q101 and DO-160F qualification, and metal-base thermal performance - making it the only option qualified for high-reliability, multi-stroke lightning protection in avionics and automotive power systems.
Availability
MAPLAD18KP16CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power distribution, and industrial motor drive input protection requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD18KP16CAE3 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 components for aerospace, defense, and industrial markets.
The MAPLAD18KP16CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and automotive load-dump immunity in mission-critical power and data interfaces.
FAQ
What is the clamping voltage of MAPLAD18KP16CAE3 at its rated peak pulse current?
The MAPLAD18KP16CAE3 has a maximum clamping voltage (VC) of 26.0 V at 693 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured across the device terminals when subjected to the full-rated surge, ensuring downstream circuitry remains within safe operating voltage limits during transient events.
Is MAPLAD18KP16CAE3 qualified for automotive applications?
Yes, MAPLAD18KP16CAE3 is AEC-Q101 qualified and explicitly rated for automotive load-dump protection. Its 16 V VWM, 26.0 V clamping, and ability to withstand repeated 10/1000 μs surges make it suitable for protecting ECUs, body control modules, and ADAS power supplies against ISO 7637-2 Test 5a/b events.
How does the metal base of MAPLAD18KP16CAE3 affect PCB layout?
The metal base of MAPLAD18KP16CAE3 serves as the cathode terminal and primary thermal path. It must be soldered to a large copper pour or external heatsink using the recommended pad layout (12.32 × 10.54 mm minimum). Failure to provide adequate thermal mass will cause junction temperature rise beyond safe limits during surge events.
Does MAPLAD18KP16CAE3 meet RTCA DO-160F lightning protection standards?
Yes, MAPLAD18KP16CAE3 is certified for RTCA DO-160F Section 22 multi-stroke lightning and Waveform 4 (6.4/69 μs) Level 4 pin injection. Its 18 kW rating and <5 ns response enable compliance with aircraft-level surge immunity requirements when mounted per Microsemi's thermal guidelines.
What is the meaning of the 'CA' and 'E3' suffixes in MAPLAD18KP16CAE3?
The 'CA' suffix indicates bidirectional polarity; the 'E3' suffix denotes RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity - eliminating dry-pack requirements and supporting standard reflow profiles up to 260 °C for 10 seconds.
MAPLAD18KP16CAE3 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 693A
- 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
MAPLAD18KP16CAE3 FAQ
1.How can I place an order for MAPLAD18KP16CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP16CAE3 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 MAPLAD18KP16CAE3 reliable?
The price and inventory of MAPLAD18KP16CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP16CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP16CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP16CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP16CAE3?
MAPLAD18KP16CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP16CAE3 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 MAPLAD18KP16CAE3?
For technical support, including MAPLAD18KP16CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP16CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP16CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP16CAE3 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 MAPLAD18KP16CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP16CAE3?
All MAPLAD18KP16CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP16CAE3, 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 MAPLAD18KP16CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP16CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP16CAE3 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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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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