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Microchip Technology MAPLAD18KP7.0AE3
- Part No.:
- MAPLAD18KP7.0AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP7.0AE3.pdf
- Description:
- TVS DIODE 7VWM 12VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,978
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Product details
Overview
MAPLAD18KP7.0AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive power systems. It delivers 18,000 W peak pulse power at 10/1000 μs, features a 7.0 V reverse standoff voltage (VWM), clamps to ≤12.0 V at 1500 A peak current, and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160F Waveform 4 Level 4 pin injection requirements.
For engineers reviewing the MAPLAD18KP7.0AE3 datasheet, MAPLAD18KP7.0AE3 pinout, MAPLAD18KP7.0AE3 application, or MAPLAD18KP7.0AE3 equivalent, key selection criteria include its 7.0 V VWM rating, 12.0 V max clamping voltage at 1500 A, low 0.7 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, and qualification for lightning-level multi-stroke transients per DO-160 Section 22.
Technical Context
This TVS diode employs an avalanche breakdown structure optimized for fast response (<100 ps rise time) and high-energy absorption in compact surface-mount form. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting sustained surge handling under low-duty-cycle conditions (≤0.05% impulse repetition rate).
It is characterized for secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances (Class 1–5 depending on impedance), and provides ESD immunity per IEC 61000-4-2 (±30 kV contact) and EFT protection per IEC 61000-4-4 (±4 kV). Standby leakage is limited to 3000 μA at 7.0 V VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous DC or peak AC operating voltage before conduction begins |
| V(BR) min/max | 7.78–8.60 V @ I(BR) - Confirmed avalanche onset range ensuring reliable turn-on margin above VWM |
| VC @ IPP | ≤12.0 V @ 1500 A - Clamping voltage limiting downstream circuit stress during worst-case 10/1000 μs surge |
| PPP | 18,000 W @ 10/1000 μs - Peak power handling capability validated per Figure 1 derating curve |
| RθJC | 0.7 °C/W - Enables efficient heat transfer from junction to case/mounting surface for thermal management |
| ID @ VWM | 3000 μA - Low standby leakage preserves system power integrity in always-on applications |
| αV(BR) | +5.0 mV/°C - Predictable positive temperature coefficient supports stable clamping over temperature |
Pinout & Package
MAPLAD18KP7.0AE3 uses a low-profile surface-mount PLAD package with metal base cathode termination. The device has two terminals: anode (top metallization) and cathode (exposed metal base), enabling direct thermal path to PCB ground plane or heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line; conducts surge current toward cathode during overvoltage event |
| Cathode | Negative return / thermal interface | Exposed metal base serving as both electrical return and primary thermal conduction path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW peak pulse power | Validated for multi-stroke lightning transients per RTCA DO-160 Section 22 without degradation |
| 0.7 °C/W RθJC | Enables >90% of surge energy to dissipate through metal base into PCB copper, reducing local hot spots |
| RoHS-compliant e3 plating | Matte-tin terminations ensure solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow |
| 3σ lot norm screening on ID | Guarantees ≤3000 μA leakage at VWM across production lots for consistent standby power performance |
| Level 4 pin injection immunity | Withstands 6.4/69 μs waveform per RTCA DO-160F Annex A without functional interruption |
Applications
| Aerospace Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC power distribution networks in commercial aircraft against induced lightning transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS placed at bus entry point to clamp surges within 100 ps while diverting up to 1500 A. Use Value: Prevents latch-up or burnout in downstream PMICs and FPGAs by limiting bus voltage to ≤12.0 V during 18 kW events. | Use Scenario: Safeguarding engine control units (ECUs) and infotainment modules during alternator load dump events in 12 V automotive systems. IC Role / Device Role / Timing Role: Primary surge shunt mounted directly at battery input connector to absorb ISO 7637-2 Pulse 5a/b energy. Use Value: Maintains system uptime by clamping transients to <12.0 V at 1500 A-well below typical 16 V IC absolute maximum ratings. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding gate drivers and current sensors on 48 V DC link rails in variable-frequency drives from switching-induced transients. IC Role / Device Role / Timing Role: Fast-response TVS placed across DC link capacitors to suppress dV/dt spikes from IGBT commutation. Use Value: Eliminates false triggering of overvoltage protection circuits by clamping spikes within 100 ps to ≤12.0 V. | Use Scenario: Securing 75 V signaling lines in train control systems against EFT bursts and lightning-induced surges per EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MPLAD18KP7.0CA) used for differential pair protection; unidirectional MAPLAD18KP7.0AE3 applied to single-ended supply rails. Use Value: Ensures SIL-2 compliance by maintaining signal integrity during ±4 kV EFT (IEC 61000-4-4) and 42 Ω IEC 61000-4-5 Class 4 events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | 600 W PPP rating, 10× lower peak power; SMC package; RθJC = 11 °C/W | Not suitable for DO-160 multi-stroke lightning; limited to single-event ESD/EFT in consumer electronics | Select only for cost-sensitive, low-energy applications where 18 kW capability is unnecessary |
| SMCJ7.0A | 1500 W PPP rating, 12× lower peak power; same PLAD footprint but no metal base; RθJC = 3.5 °C/W | Cannot meet DO-160 Section 22 multi-stroke requirements; lacks AEC-Q101 qualification | Acceptable for industrial IEC 61000-4-5 Class 2–3 if thermal derating and single-event use are confirmed |
Compared with SMBJ7.0A and SMCJ7.0A, MAPLAD18KP7.0AE3 delivers 30× and 12× higher peak pulse power respectively, with superior thermal dissipation (0.7 vs. 11 or 3.5 °C/W) and formal qualification for aerospace lightning standards-making it the sole option for certified multi-stroke surge environments.
Availability
MAPLAD18KP7.0AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU, and industrial motor drive applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD18KP7.0AE3 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 power semiconductors for aerospace, defense, and industrial markets.
The MAPLAD series was developed specifically for high-energy transient suppression in safety-critical platforms-emphasizing multi-stroke survivability, thermal robustness, and qualification to RTCA DO-160 and AEC-Q101 standards.
FAQ
What is the clamping voltage specification for MAPLAD18KP7.0AE3 at its rated peak pulse current?
MAPLAD18KP7.0AE3 has a maximum clamping voltage (VC) of 12.0 V at 1500 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across temperature and ensures protected circuits remain below critical overvoltage thresholds during surge events. The clamping behavior is verified per Figure 3 in RF01215 Rev B.
Is MAPLAD18KP7.0AE3 qualified for automotive applications?
Yes, MAPLAD18KP7.0AE3 is qualified to AEC-Q101 for stress testing including HTGB, HTRB, and temperature cycling. Its 7.0 V VWM and 12.0 V clamping voltage make it suitable for 12 V automotive load dump protection, and it meets ISO 7637-2 Pulse 5 requirements when properly mounted per recommended pad layout.
How does the metal base cathode of MAPLAD18KP7.0AE3 impact thermal performance?
The exposed metal base serves as the cathode and primary thermal interface, achieving a junction-to-case thermal resistance (RθJC) of just 0.7 °C/W. This allows >85% of surge energy to conduct directly into the PCB copper or heatsink, significantly reducing junction temperature rise compared to plastic-body alternatives like SMCJ7.0A (RθJC = 3.5 °C/W).
What is the meaning of the 'E3' suffix in MAPLAD18KP7.0AE3?
The 'E3' suffix indicates RoHS-compliant matte-tin plating on all terminations, meeting IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement. This ensures compatibility with standard lead-free reflow profiles and eliminates post-bake steps during assembly of MAPLAD18KP7.0AE3.
Can MAPLAD18KP7.0AE3 be used for bidirectional transient protection?
No-MAPLAD18KP7.0AE3 is unidirectional. For bidirectional protection at 7.0 V standoff, the correct variant is MPLAD18KP7.0CA. The 'A' suffix denotes unidirectional polarity, while 'CA' denotes bidirectional; using MAPLAD18KP7.0AE3 in AC or differential applications risks forward conduction and failure.
MAPLAD18KP7.0AE3 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):
- 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
MAPLAD18KP7.0AE3 FAQ
1.How can I place an order for MAPLAD18KP7.0AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP7.0AE3 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 MAPLAD18KP7.0AE3 reliable?
The price and inventory of MAPLAD18KP7.0AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP7.0AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP7.0AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP7.0AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP7.0AE3?
MAPLAD18KP7.0AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP7.0AE3 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 MAPLAD18KP7.0AE3?
For technical support, including MAPLAD18KP7.0AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP7.0AE3 requirements.
6.How does Aetrix verify that MAPLAD18KP7.0AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP7.0AE3 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 MAPLAD18KP7.0AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP7.0AE3?
All MAPLAD18KP7.0AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP7.0AE3, 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 MAPLAD18KP7.0AE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP7.0AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP7.0AE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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