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Microchip Technology MPLAD18KP60CA
- Part No.:
- MPLAD18KP60CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP60CA.pdf
- Description:
- TVS DIODE 60VWM 96.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,311
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Product details
Overview
MPLAD18KP60CA 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, clamps at ≤96.8 V under 100 A peak impulse current, and features a 60 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (66.7–73.7 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Waveform 4 Level 4 and IEC 61000-4-5 Class 1–5 secondary lightning protection requirements.
For engineers reviewing the MPLAD18KP60CA datasheet, MPLAD18KP60CA pinout, MPLAD18KP60CA application, or MPLAD18KP60CA equivalent, key selection criteria include its bidirectional polarity, 60 V working voltage, 96.8 V max clamping at 100 A, thermal resistance of 0.7 °C/W junction-to-case, and compliance with aircraft lightning standards DO-160F and IEC 61000-4-5.
Technical Context
This TVS diode employs an avalanche breakdown mechanism to divert high-energy transients away from sensitive circuitry. Its metal-base package provides low thermal resistance (RθJC = 0.7 °C/W), enabling rapid heat dissipation during multi-stroke events such as lightning-induced surges. The device operates bidirectionally, making it suitable for AC-coupled or floating signal lines where polarity reversal may occur.
It is characterized for operation across –55 °C to +150 °C junction temperature, with standby current ID ≤10 μA at VWM and clamping response time <5 ns. Surge testing per AEC-Q101 ensures reliability under repetitive 1000 A impulses, and moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V maximum reverse standoff voltage - sets upper limit of continuous operating voltage before conduction begins |
| V(BR) min/max | 66.7–73.7 V breakdown range at I(BR) - defines guaranteed avalanche initiation window for predictable clamping onset |
| VC @ IPP | ≤96.8 V clamping voltage at 100 A peak pulse - limits downstream voltage stress during worst-case surge |
| PPP | 18,000 W peak pulse power @ 10/1000 μs - supports multi-stroke lightning immunity per DO-160F Section 22 |
| RθJC | 0.7 °C/W junction-to-case thermal resistance - enables effective heatsinking on metal-core PCBs or chassis mounts |
| ID @ VWM | ≤10 μA maximum standby leakage - minimizes quiescent power loss in always-on protection circuits |
| TJ Range | –55 °C to +150 °C operational junction temperature - validated for under-hood automotive and avionics environments |
Pinout & Package
The MPLAD18KP60CA uses a surface-mount, metal-base package with two terminals: anode and cathode. The cathode is electrically connected to the exposed metal base (package bottom), requiring proper thermal pad layout per Microsemi's recommended footprint (Ref. A = 0.470", B = 0.230", C = 0.100").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top side) | Transient current entry point (bidirectional) | Accepts surge current from either polarity; connects to protected line via minimal-inductance trace |
| Cathode (metal base) | Common reference and thermal path | Must be soldered to large copper pour or heatsink; serves as primary thermal conduction path to PCB/chassis |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Protects AC or floating DC lines without polarity constraints - eliminates need for dual unidirectional devices |
| 18 kW peak pulse rating | Meets RTCA DO-160F Section 22 multi-stroke lightning test - validated for aircraft power and signal bus protection |
| Low RθJC (0.7 °C/W) | Enables >5× higher sustained surge duty cycle vs. standard SMD TVS - critical for repeated load dump events |
| AEC-Q101 qualification | Guarantees robustness in automotive under-hood applications including alternator load dump and ISO 7637-2 pulses |
| Level 1 moisture sensitivity | Zero dry-pack requirement and unlimited floor life - simplifies SMT assembly and inventory management |
Applications
| Aircraft Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC main bus against lightning-induced surges per RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs). IC Role / Device Role / Timing Role: Primary bidirectional TVS clamp placed at bus entry point to shunt >10 kA transients before reaching upstream converters and regulators. Use Value: Limits bus voltage to ≤96.8 V during 100 A surge, preventing latch-up or destruction of MIL-STD-1275-compliant power modules. | Use Scenario: Safeguarding ECU input sensors and CAN transceivers from alternator load dump spikes (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: Secondary protection stage after front-end LC filters, absorbing residual energy that bypasses passive filtering. Use Value: Clamps 60 V nominal system to <97 V within 5 ns, preserving sensor accuracy and avoiding CAN bus reset due to overvoltage. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Shielding encoder feedback lines and analog inputs in variable-frequency drives exposed to switching transients from IGBTs. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential encoder channels (A/B/Z), mounted directly at connector interface. Use Value: Withstands 18 kW surges while maintaining <10 μA leakage - avoids signal offset drift and preserves 12-bit+ position resolution. | Use Scenario: Protecting 70 V DC track signaling circuits from induced surges during nearby lightning strikes (IEC 61000-4-5, 42 Ω source, Class 4). IC Role / Device Role / Timing Role: Bidirectional clamp on isolated RS-485 data lines interfacing with trackside relays and detectors. Use Value: Maintains 60 V standoff while clamping to ≤97 V - ensures uninterrupted communication during 4 kV surge events without false tripping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ60CA | 600 W PPP rating (vs. 18,000 W); DO-214AA package; RθJC ≈ 40 °C/W | Only suitable for low-energy ESD/EFT - cannot meet DO-160F lightning or ISO 7637-2 load dump | Select only for board-level ESD protection where surge energy is <100 mJ |
| SMCJ60CA | 1500 W PPP rating; DO-214AB package; RθJC ≈ 15 °C/W; no AEC-Q101 or DO-160F validation | Lacks qualification for aerospace or automotive safety-critical use; limited multi-stroke endurance | Acceptable for industrial control panels with moderate surge exposure, but not for certified avionics or Tier-1 automotive |
Compared with SMBJ60CA and SMCJ60CA, the MPLAD18KP60CA delivers 30× and 12× higher peak pulse power respectively, with verified DO-160F and AEC-Q101 compliance - making it the only option for certified lightning and load dump protection in flight-critical or engine-bay electronics.
Availability
MPLAD18KP60CA is available at Aetrix Electronics and suitable for aircraft power distribution, automotive ECU protection, and industrial motor drive I/O requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MPLAD18KP60CA 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 components for aerospace, defense, and industrial markets.
The MPLAD18KP60CA belongs to Microsemi's PLAD family of high-power surface-mount TVS diodes, engineered specifically for certified lightning and load dump protection in safety-critical platforms where multi-stroke surge endurance and thermal stability are mandatory.
FAQ
What is the clamping voltage of the MPLAD18KP60CA at its rated peak pulse current?
The MPLAD18KP60CA has a maximum clamping voltage (VC) of 96.8 V when subjected to its rated peak pulse current of 100 A under 10/1000 μs waveform conditions. This value is specified in the Electrical Characteristics table of RF01215 Rev B and represents the upper bound of voltage seen by downstream circuitry during a worst-case surge event. The MPLAD18KP60CA maintains this clamping performance across its full operating temperature range.
Is the MPLAD18KP60CA qualified for automotive applications?
Yes, the MPLAD18KP60CA is explicitly qualified to AEC-Q101 for automotive use. It is rated for junction temperatures from –55 °C to +150 °C and has been surge-tested to 1000 A per AEC-Q101 requirements. Its 18 kW pulse rating and low thermal resistance make it suitable for alternator load dump protection in engine control units and battery management systems, as confirmed in Microsemi's RF01215 documentation.
Does the MPLAD18KP60CA meet RTCA DO-160F lightning protection requirements?
Yes, the MPLAD18KP60CA is certified for RTCA DO-160F Section 22 lightning-induced transient protection. Specifically, it meets Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 up to 130 V variants - and since MPLAD18KP60CA falls within the 7.0–130CA range cited in the document, it is approved for these aircraft certification levels. Its 18 kW rating ensures multi-stroke capability essential for DO-160F compliance.
What is the thermal resistance and recommended mounting for the MPLAD18KP60CA?
The MPLAD18KP60CA has a junction-to-case thermal resistance (RθJC) of 0.7 °C/W. Its metal-base construction requires direct soldering of the cathode (bottom side) to a large copper thermal pad or heatsink. Microsemi specifies a pad layout with dimensions A = 0.470", B = 0.230", C = 0.100" (11.94 × 5.85 × 2.44 mm) to ensure optimal heat transfer. Failure to implement this thermal design risks derating of pulse power capability.
How does the bidirectional configuration of the MPLAD18KP60CA affect its circuit implementation?
The bidirectional configuration of the MPLAD18KP60CA allows it to protect AC-coupled or floating DC signal paths without regard to voltage polarity - unlike unidirectional TVS devices that require correct orientation. In practice, this means the MPLAD18KP60CA can be placed across differential lines (e.g., RS-485, CAN) or transformer-coupled interfaces without directional concerns, simplifying layout and eliminating risk of reverse installation. Its symmetric clamping behavior is validated per IEC 61000-4-5 testing.
MPLAD18KP60CA 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):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 186A
- 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
MPLAD18KP60CA FAQ
1.How can I place an order for MPLAD18KP60CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP60CA 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 MPLAD18KP60CA reliable?
The price and inventory of MPLAD18KP60CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP60CA is usually 5 days.
3.What payment methods are accepted for MPLAD18KP60CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP60CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP60CA?
MPLAD18KP60CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP60CA 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 MPLAD18KP60CA?
For technical support, including MPLAD18KP60CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP60CA requirements.
6.How does Aetrix verify that MPLAD18KP60CA is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP60CA 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 MPLAD18KP60CA meets industry standards.
7.What is the process for return or replacement of MPLAD18KP60CA?
All MPLAD18KP60CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP60CA, 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 MPLAD18KP60CA part is unused and in its original packaging.
Return procedure for MPLAD18KP60CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP60CA Tags
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onsemi
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Diodes Incorporated
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