My Inquiry
My Account
Microchip Technology MAPLAD18KP75CAE3
- Part No.:
- MAPLAD18KP75CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP75CAE3.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,886
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD18KP75CAE3 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 75 V reverse standoff voltage (VWM), clamps to ≤121 V at 149 A peak current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD18KP75CAE3 datasheet, MAPLAD18KP75CAE3 pinout, MAPLAD18KP75CAE3 application, or MAPLAD18KP75CAE3 equivalent, key selection criteria include bidirectional polarity, 75 V working voltage, 121 A peak impulse current rating, thermal resistance of 0.7 °C/W junction-to-case, and compliance with IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances) and RTCA/DO-160F Waveform 4 Level 4.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold (V(BR) = 83.3–92.1 V). Its low RθJC (0.7 °C/W) enables efficient heat transfer to an external heatsink, critical for sustaining repeated 18 kW surges under duty factor ≤0.05%.
It supports bidirectional protection without polarity sensitivity, making it suitable for AC-coupled or floating signal lines. The device is surge-tested per AEC-Q101 and qualified for secondary lightning protection across IEC 61000-4-5 Classes 1–5 (42 Ω), Classes 1–4 (12 Ω), and Classes 2–3 (2 Ω), with pin injection immunity per RTCA/DO-160F Waveform 4 Level 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 18,000 W @ 10/1000 μs - sustains aircraft-grade lightning transients without failure |
| Reverse Standoff Voltage (VWM) | 75 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤121 V @ 149 A - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables direct mounting to heatsink for reliable multi-stroke operation |
| Breakdown Voltage (V(BR)) | 83.3–92.1 V @ I(BR) - defines precise conduction onset for predictable protection timing |
| Peak Pulse Current (IPP) | 149 A @ 10/1000 μs - quantifies maximum surge current handled at rated clamping |
| Temperature Coefficient (αV(BR)) | 90 mV/°C - ensures stable V(BR) over -55°C to +150°C operating range |
Pinout & Package
The MAPLAD18KP75CAE3 uses a surface-mount PLAD package with metal base cathode termination. The device has two terminals: anode and cathode, with polarity marked by the metal base (cathode) on the bottom surface. Mounting requires the recommended pad layout per RF01215 Rev B for optimal thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Positive terminal for bidirectional conduction path | Connects to line being protected; forms one side of symmetrical clamping structure |
| Cathode (metal base) | Negative terminal / thermal interface | Serves as primary heat sink interface; must be soldered to copper pour or heatsink for RθJC = 0.7 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables symmetric protection on AC or floating lines without polarity constraints |
| 18 kW peak pulse rating | Meets RTCA DO-160 Section 22 multi-stroke lightning test requirements |
| 0.7 °C/W junction-to-case thermal resistance | Supports >1000 surge cycles with controlled temperature rise when mounted per spec |
| IEC 61000-4-5 compliance (42/12/2 Ω) | Validated for secondary lightning protection across all major industrial and aerospace source impedances |
| RTCA/DO-160F Waveform 4 Level 4 immunity | Withstands 6.4/69 μs pin-injection transients up to 75 V standoff systems |
Applications
| Aerospace Avionics Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus in flight control computers against induced lightning transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across main power input to limit surge voltage to <121 V during multi-stroke events. Use Value: Prevents latch-up or damage to downstream DC/DC converters and FPGAs during certified lightning exposure testing. | Use Scenario: Safeguarding engine control unit (ECU) inputs during alternator load dump events in 24 V commercial vehicles. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor that activates within <5 ns to clamp 120 V spikes to ≤121 V. Use Value: Eliminates need for upstream fusing or derating, enabling compact ECU designs compliant with ISO 7637-2 Pulse 5a. |
| Industrial Motor Drive Control Inputs | Railway Signaling Interface Protection |
Use Scenario: Shielding isolated analog sensor inputs on variable-frequency drives from switching-induced RFI and EFT bursts. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector entry point to shunt transients before isolation barrier. Use Value: Maintains signal integrity while meeting IEC 61000-4-4 Level 4 (4 kV) and IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) ESD immunity. | Use Scenario: Protecting 75 V signaling lines in European railway interlocking systems against traction current surges and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional suppressor deployed on trackside signal conditioning PCBs per EN 50121-3-2. Use Value: Achieves Class 3 immunity (4 kV line-earth, 2 kV line-line) with single-device solution, reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | 600 W PPP rating, 10× lower peak power; SMC package; RθJC ≈ 10 °C/W | Not suitable for DO-160 Section 22 or multi-stroke lightning; limited to consumer/industrial ESD/EFT | Select only for cost-sensitive, low-energy applications where 18 kW capability is unnecessary |
| SMCJ75CA | 1500 W PPP rating, same SMC package; RθJC ≈ 4.5 °C/W; no AEC-Q101 or DO-160 qualification | Lacks aerospace-grade surge endurance and thermal performance; not validated for multi-stroke testing | Acceptable for automotive infotainment or non-safety-critical ECUs requiring basic ISO 7637-2 compliance |
Compared with SMBJ75CA and SMCJ75CA, MAPLAD18KP75CAE3 provides 30× and 12× higher peak pulse power respectively, with superior thermal management (0.7 vs. ≥4.5 °C/W) and formal qualification for RTCA DO-160 and IEC 61000-4-5 - essential for safety-critical aerospace and heavy-duty automotive systems.
Availability
MAPLAD18KP75CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial motor drive systems requiring stable component supply, long-term lifecycle support, and certified surge resilience.
Supply support for MAPLAD18KP75CAE3 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 ICs for aerospace, defense, and industrial markets.
The MAPLAD18KP75CAE3 belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in mission-critical environments.
FAQ
What is the clamping voltage of MAPLAD18KP75CAE3 at its rated peak pulse current?
The MAPLAD18KP75CAE3 has a maximum clamping voltage (VC) of 121 V at 149 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and Table on page 4 of RF01215 Rev B, ensuring downstream circuitry remains below destructive voltage thresholds during certified lightning transients.
Is MAPLAD18KP75CAE3 qualified for RTCA DO-160 Section 22 testing?
Yes, MAPLAD18KP75CAE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing, as confirmed in the "Typical applications" section of RF01215 Rev B. Its 18,000 W peak pulse power rating and bidirectional construction make MAPLAD18KP75CAE3 suitable for aircraft-level surge immunity without derating.
What is the thermal resistance junction-to-case for MAPLAD18KP75CAE3, and why does it matter?
The MAPLAD18KP75CAE3 has a junction-to-case thermal resistance (RθJC) of 0.7 °C/W. This low value is critical because it allows rapid heat transfer from the silicon die to an external heatsink or copper plane, enabling reliable operation during repeated 18 kW surges - a requirement for DO-160 Section 22 and IEC 61000-4-5 multi-pulse validation.
Does MAPLAD18KP75CAE3 meet IEC 61000-4-5 standards, and at which source impedances?
Yes, MAPLAD18KP75CAE3 is certified for IEC 61000-4-5 secondary lightning protection at three source impedances: 42 Ω (Classes 1–5), 12 Ω (Classes 1–4), and 2 Ω (Classes 2–3), as documented in RF01215 Rev B. This multi-impedance validation ensures robustness across diverse industrial, transportation, and infrastructure surge environments.
What does the "CA" suffix and "E3" suffix indicate in MAPLAD18KP75CAE3?
The "CA" suffix denotes bidirectional polarity, enabling symmetrical clamping for AC or floating circuits. The "E3" suffix confirms RoHS-compliant matte-tin plating per J-STD-020B moisture sensitivity Level 1 - meaning MAPLAD18KP75CAE3 requires no dry-pack handling and is compatible with standard reflow profiles.
MAPLAD18KP75CAE3 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 1396A (1.396kA)
- 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
MAPLAD18KP75CAE3 FAQ
1.How can I place an order for MAPLAD18KP75CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP75CAE3 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 MAPLAD18KP75CAE3 reliable?
The price and inventory of MAPLAD18KP75CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP75CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP75CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP75CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP75CAE3?
MAPLAD18KP75CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP75CAE3 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 MAPLAD18KP75CAE3?
For technical support, including MAPLAD18KP75CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP75CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP75CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP75CAE3 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 MAPLAD18KP75CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP75CAE3?
All MAPLAD18KP75CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP75CAE3, 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 MAPLAD18KP75CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP75CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP75CAE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
