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Microchip Technology MAPLAD18KP130A
- Part No.:
- MAPLAD18KP130A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP130A.pdf
- Description:
- TVS DIODE 130VWM 209VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,440
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Product details
Overview
MAPLAD18KP130A 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, features a 130 V reverse standoff voltage (VWM), clamps to ≤209 V at 1000 A peak impulse current, and exhibits <100 ps response time. It is qualified to AEC-Q101 and meets RTCA DO-160F Level 5 pin injection (Waveform 4) and IEC 61000-4-5 Class 2–5 secondary lightning protection.
For engineers reviewing the MAPLAD18KP130A datasheet, MAPLAD18KP130A pinout, MAPLAD18KP130A application, or MAPLAD18KP130A equivalent, this device is selected for high-reliability DC bus protection where fast clamping, multi-stroke lightning resilience, and thermal robustness under repeated transients are critical - especially in avionics power distribution and 24/28 V vehicle electronics.
Technical Context
The MAPLAD18KP130A employs an avalanche diode structure optimized for low clamping ratio and minimal thermal resistance (RθJC = 0.7 °C/W). Its metal-base package enables direct heatsinking, supporting sustained surge duty cycles ≤0.05% per MIL-STD-750 test conditions. The device operates across –55°C to +150°C junction temperature with full derating above 100°C case temperature.
It is characterized for bidirectional variants (suffix CA), but MAPLAD18KP130A is strictly unidirectional with cathode on the metal base. Standby leakage is limited to 10 μA at 130 V, and breakdown occurs between 144 V and 159 V at I(BR) = 5 mA - ensuring precise overvoltage thresholding without false triggering during nominal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 18,000 W - sustains single-stroke lightning surges up to 1000 A without failure |
| Reverse Standoff Voltage (VWM) | 130 V - sets maximum continuous DC operating voltage before conduction begins |
| Clamping Voltage (VC @ IPP) | 209 V max at 1000 A - limits downstream circuit voltage stress during surge events |
| Breakdown Voltage (V(BR)) | 144–159 V @ 5 mA - defines precise avalanche initiation threshold for repeatable protection |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Response Time | <100 ps - ensures sub-nanosecond turn-on for ESD and fast-rising transients |
| Leakage Current (ID @ VWM) | 10 μA max - negligible standby power loss and no system bias interference |
Pinout & Package
MAPLAD18KP130A uses a proprietary surface-mount plastic package with metal base (cathode) and top-side anode terminal. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and complies with UL94V-0 flammability rating. Tin-lead or RoHS-compliant matte-tin plating ensures solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Positive input node for unidirectional clamping | Connected to protected line; conducts surge current toward cathode when voltage exceeds V(BR) |
| Cathode (metal base) | Reference/return path (ground or low-side rail) | Must be soldered to large copper pour or heatsink; serves as primary thermal and electrical return path |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW surge rating | Enables single-device protection against DO-160 Section 22 multi-stroke lightning (Level 5) without parallel stacking |
| 0.7 °C/W RθJC | Reduces thermal runaway risk during repetitive surges; supports >1000× 10/1000 μs events with proper PCB layout |
| AEC-Q101 qualification | Validates reliability for automotive 12/24 V power systems including load dump and jump-start scenarios |
| RTCA DO-160F Waveform 4 Level 5 compliance | Guarantees immunity to 6.4/69 μs pin-injected transients at 25°C - required for commercial aircraft avionics |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints; simplifies SMT assembly logistics |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in flight control computers against lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps 1000 A surges to ≤209 V within 100 ps, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: Safeguarding 12 V supply rails in engine management systems during ISO 7637-2 load dump events (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, absorbing energy before it reaches MCU power pins. Use Value: Withstands 18 kW pulses without degradation, enabling single-device compliance with AEC-Q101 stress tests and extended field life. |
| Railway Signaling Interface | Industrial DC Motor Drive Input |
Use Scenario: Shielding 110 V DC signaling lines in train control units from induced surges during switching of traction inverters. IC Role / Device Role / Timing Role: Standoff-rated TVS on data/power hybrid lines interfacing with trackside equipment. Use Value: 130 V VWM matches nominal rail voltage while providing 79 V margin to clamping level - sufficient for EN 50121-4 immunity requirements. | Use Scenario: Protecting 24 V auxiliary power inputs in servo drives exposed to back-EMF spikes from brushed DC motors. IC Role / Device Role / Timing Role: Fast-response clamp on motor controller logic supply, placed adjacent to connector entry point. Use Value: Sub-100 ps turn-on prevents voltage overshoot from reaching FPGA I/O banks, eliminating configuration corruption during motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130A | 600 W PPP rating, 130 V VWM, SMB package, RθJA = 40 °C/W (no metal base) | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160 multi-stroke validation | Select only for cost-sensitive industrial controls where 18 kW capability is unnecessary |
| SMCJ130A | 1500 W PPP, same VWM, larger SMC package, RθJC ≈ 2.5 °C/W | Cannot meet RTCA DO-160F Level 5 waveform 4; requires parallel devices for 1000 A handling | Use when board space allows larger footprint and thermal performance is less critical than ultra-low profile |
Compared with SMBJ130A and SMCJ130A, MAPLAD18KP130A delivers 30× higher pulse power in a lower-profile package with superior thermal coupling - making it uniquely suitable for aerospace-grade multi-stroke lightning protection where PCB real estate and thermal mass are constrained.
Availability
MAPLAD18KP130A is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, and railway signaling interface applications requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD18KP130A 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 semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and ruggedized discrete components.
The MAPLAD18KP130A belongs to Microsemi's PLAD family of high-power surface-mount TVS diodes, engineered specifically for multi-stroke lightning resilience and thermal stability in mission-critical power systems.
FAQ
What is the clamping voltage of MAPLAD18KP130A at its rated peak pulse current?
The MAPLAD18KP130A has a maximum clamping voltage (VC) of 209 V at 1000 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across temperature and ensures downstream circuitry remains below destructive voltage thresholds during surge events. The clamping performance is validated per Figure 3 in RF01215 Rev B.
Is MAPLAD18KP130A suitable for automotive applications requiring AEC-Q101 qualification?
Yes, MAPLAD18KP130A is explicitly tested and qualified to AEC-Q101 standards, including high-temperature operating life, temperature cycling, and surge testing. Its 130 V VWM and 18 kW rating make it appropriate for protecting 24 V automotive subsystems against load dump and jump-start transients - confirmed in Microsemi's RF01215 documentation.
Does MAPLAD18KP130A have a bidirectional variant, and how does it differ?
Yes - the bidirectional variant is MAPLAD18KP130CA. Unlike MAPLAD18KP130A, which conducts only in reverse bias (anode-to-cathode), MAPLAD18KP130CA protects both polarities and is used in AC-coupled or floating signal lines. Both share identical PPP, VWM, and thermal specs, but MAPLAD18KP130CA has symmetric breakdown and clamping behavior around 0 V.
What is the thermal resistance from junction to ambient for MAPLAD18KP130A?
MAPLAD18KP130A has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W when mounted on FR4 with the recommended pad layout per RF01215. However, its junction-to-case resistance is only 0.7 °C/W - meaning effective thermal management requires direct conduction from the metal base to a heatsink or large copper plane, not reliance on ambient convection alone.
Can MAPLAD18KP130A be used for RTCA DO-160F Level 5 lightning protection?
Yes, MAPLAD18KP130A is certified for RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs) at Level 5 per the manufacturer's specification table in RF01215 Rev B. This qualification covers pin-injection testing at 25°C and confirms suitability for primary or secondary lightning protection in commercial aircraft avionics systems.
MAPLAD18KP130A 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):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 209V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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
MAPLAD18KP130A FAQ
1.How can I place an order for MAPLAD18KP130A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP130A 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 MAPLAD18KP130A reliable?
The price and inventory of MAPLAD18KP130A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP130A is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP130A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP130A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP130A?
MAPLAD18KP130A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP130A 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 MAPLAD18KP130A?
For technical support, including MAPLAD18KP130A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP130A requirements.
6.How does Aetrix verify that MAPLAD18KP130A is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP130A 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 MAPLAD18KP130A meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP130A?
All MAPLAD18KP130A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP130A, 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 MAPLAD18KP130A part is unused and in its original packaging.
Return procedure for MAPLAD18KP130A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP130A Tags
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