My Inquiry
My Account
Microchip Technology MAPLAD18KP7.0CAE3
- Part No.:
- MAPLAD18KP7.0CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP7.0CAE3.pdf
- Description:
- TVS DIODE 7VWM 12VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,920
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD18KP7.0CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤150 V under 1500 A peak current, and features a 7.0 V reverse standoff voltage (VWM) with ±5% tolerance. 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 MAPLAD18KP7.0CAE3 datasheet, MAPLAD18KP7.0CAE3 pinout, MAPLAD18KP7.0CAE3 application, or MAPLAD18KP7.0CAE3 equivalent, this device is selected for high-reliability DC bus protection where low clamping voltage, fast response (<5 ns), and multi-stroke lightning resilience are critical - especially in avionics power distribution, vehicle ECU inputs, and industrial PLC I/O modules.
Technical Context
The MAPLAD18KP7.0CAE3 employs an avalanche breakdown structure optimized for bidirectional clamping across both polarities, enabling symmetric transient suppression without polarity dependency. Its thermal design achieves 0.7 °C/W junction-to-case resistance and supports sustained operation up to +150 °C junction temperature.
It is characterized per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) with 42 Ω, 12 Ω, and 2 Ω source impedances - validated for Class 1–5 compliance under 42 Ω and Class 2–4 under 12 Ω. The device exhibits <5 ns response time and 5.0 mV/°C temperature coefficient of breakdown voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) min/max | 7.78–8.60 V @ I(BR) - Ensures reliable avalanche initiation within tight tolerance for predictable clamping onset. |
| VC @ IPP | 150 V @ 1500 A - Clamping voltage during worst-case 10/1000 μs surge; limits downstream voltage stress. |
| PPP | 18,000 W @ 10/1000 μs - Enables single-device protection against severe lightning-induced transients. |
| ID @ VWM | 3000 μA max - Low leakage preserves system efficiency and minimizes standby power loss. |
| RθJC | 0.7 °C/W - Allows direct mounting to heatsink for thermal management in high-duty-cycle applications. |
| αV(BR) | 5.0 mV/°C - Predictable voltage drift over temperature simplifies margining in wide-temperature environments. |
Pinout & Package
MAPLAD18KP7.0CAE3 uses a surface-mount PLAD package with metal base cathode contact (bidirectional configuration). The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and features a void-free UL94V-0 epoxy body with matte-tin RoHS-compliant plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Transient Current Entry (Positive Polarity) | Conducts surge current into device during positive transients; forms one half of symmetrical clamping path. |
| Cathode (Metal Base) | Transient Current Return / Heat Sink Interface | Serves as low-inductance return path and primary thermal conduction surface to PCB/heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC lines or ungrounded DC buses without polarity constraints. |
| 18 kW peak pulse rating | Eliminates need for parallel TVS arrays in high-energy lightning protection circuits (e.g., DO-160 Section 22). |
| 0.7 °C/W RθJC | Supports >71 W steady-state dissipation at TC = 100 °C - enables use in thermally constrained enclosures. |
| AEC-Q101 qualified | Validated for automotive under-hood and powertrain applications requiring extended temperature and reliability assurance. |
| RTCA DO-160F Level 4 compliance | Meets stringent aircraft pin-injection immunity requirements for Waveform 4 (6.4/69 μs) up to 7.0–200 V variants. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in flight control computers and sensor interfaces against lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS diode providing sub-5 ns clamping response to limit transient voltage to <150 V during multi-stroke events. Use Value: Enables compliance with RTCA DO-160F Level 4 pin injection and Class 1–5 IEC 61000-4-5 testing without external filtering or redundancy. | Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: High-power TVS absorbing up to 18,000 W surge energy while maintaining clamping below 150 V to protect downstream regulators and microcontrollers. Use Value: Replaces multi-stage protection schemes with single-device solution, reducing BOM count and PCB area by >40% versus stacked TVS+MOV designs. |
| Industrial PLC I/O Modules | Railway Signaling Interfaces |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from induced transients in factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional transient suppressor with 7.0 V standoff, clamping at 150 V to preserve signal integrity during EFT bursts (IEC 61000-4-4). Use Value: Maintains <3000 μA leakage at rated voltage, preventing false triggering in high-impedance sensing circuits. | Use Scenario: Protecting track-side signaling electronics from lightning coupling via long cable runs in EN 50121-4 compliant rail systems. IC Role / Device Role / Timing Role: Secondary lightning protector rated for IEC 61000-4-5 with 42 Ω source impedance, clamping within Class 5 limits. Use Value: Achieves full Class 5 immunity with no additional series impedance or derating - verified per test waveform parameters in RF01215 Rev B. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | 600 W PPP rating, 100 V VC @ 43.3 A IPP - 30× lower peak power handling. | Restricted to low-energy ESD/EFT; unsuitable for DO-160 lightning or load dump. | Select only for cost-sensitive consumer-grade I/O protection where surge energy ≤100 J. |
| SMCJ7.0CA | 1500 W PPP, 13.4 V VC @ 112 A IPP - 12× lower peak power, higher clamping voltage. | Limited to Class 1–2 IEC 61000-4-5; fails DO-160 Level 4 pin injection testing. | Acceptable for basic industrial EFT protection but requires parallel staging for aerospace-grade robustness. |
Compared with SMBJ7.0CA and SMCJ7.0CA, MAPLAD18KP7.0CAE3 delivers 30× and 12× higher peak pulse power respectively, enabling single-device compliance with RTCA DO-160F Level 4 and IEC 61000-4-5 Class 5 - critical for mission-critical aerospace and rail infrastructure where cascaded protection adds failure modes and latency.
Availability
MAPLAD18KP7.0CAE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, and industrial PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD18KP7.0CAE3 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 (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 MPLAD family was engineered specifically for high-energy transient suppression in safety-critical platforms - emphasizing low thermal resistance, multi-stroke endurance, and qualification to RTCA DO-160, AEC-Q101, and MIL-PRF-19500 screening standards.
FAQ
What is the clamping voltage of MAPLAD18KP7.0CAE3 at its rated peak pulse current?
The MAPLAD18KP7.0CAE3 has a maximum clamping voltage (VC) of 150 V when subjected to its rated peak pulse current of 1500 A under the standard 10/1000 μs waveform. This value is guaranteed per the RF01215 Rev B datasheet and ensures downstream circuitry remains within safe operating voltage limits during severe transients.
Is MAPLAD18KP7.0CAE3 suitable for automotive load dump protection per ISO 7637-2?
Yes, MAPLAD18KP7.0CAE3 is qualified to AEC-Q101 and rated for 18,000 W peak pulse power - exceeding the energy requirements of ISO 7637-2 Pulse 5a (load dump). Its 7.0 V standoff and 150 V clamping voltage make it appropriate for protecting 12 V and 24 V automotive ECUs without additional series components.
Does MAPLAD18KP7.0CAE3 require a heatsink for continuous operation?
MAPLAD18KP7.0CAE3 does not require an external heatsink for transient suppression, but its 0.7 °C/W junction-to-case thermal resistance enables effective heat transfer when mounted directly to a copper pour or metal-core PCB. For steady-state power dissipation above 2.5 W, thermal design per Figure 6 in RF01215 Rev B is required.
What is the polarity configuration of MAPLAD18KP7.0CAE3, and how is it identified?
MAPLAD18KP7.0CAE3 is a bidirectional TVS, indicated by the "CA" suffix. The cathode is the metal base (bottom surface), and the top surface serves as the anode terminal for both polarities. Polarity marking follows Microsemi's PLAD package convention: no top-side marking for bidirectional devices; identification relies on mechanical orientation and datasheet-defined terminal roles.
Can MAPLAD18KP7.0CAE3 be used in RTCA DO-160F Section 22 lightning testing?
Yes, MAPLAD18KP7.0CAE3 is explicitly listed in RF01215 Rev B for RTCA DO-160F Section 22 multi-stroke lightning compliance. It meets Level 4 pin injection (Waveform 4) and supports Class 1–5 secondary lightning protection per IEC 61000-4-5 - confirmed for the full 7.0–200 V variant range including MAPLAD18KP7.0CAE3.
MAPLAD18KP7.0CAE3 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 1500A (1.5kA)
- 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
MAPLAD18KP7.0CAE3 FAQ
1.How can I place an order for MAPLAD18KP7.0CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP7.0CAE3 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 MAPLAD18KP7.0CAE3 reliable?
The price and inventory of MAPLAD18KP7.0CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP7.0CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP7.0CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP7.0CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP7.0CAE3?
MAPLAD18KP7.0CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP7.0CAE3 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 MAPLAD18KP7.0CAE3?
For technical support, including MAPLAD18KP7.0CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP7.0CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP7.0CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP7.0CAE3 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 MAPLAD18KP7.0CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP7.0CAE3?
All MAPLAD18KP7.0CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP7.0CAE3, 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 MAPLAD18KP7.0CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP7.0CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP7.0CAE3 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…
