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Microchip Technology MAPLAD36KP54CAE3
- Part No.:
- MAPLAD36KP54CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP54CAE3.pdf
- Description:
- TVS DIODE 54VWM 87.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,997
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Product details
Overview
MAPLAD36KP54CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps at ≤87.1 V under 414 A peak impulse current, and features 54 V reverse standoff voltage (VWM), 60–66.3 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance. It is qualified to AEC-Q101 and meets RTCA DO-160F Waveform 4 Level 4 and IEC 61000-4-5 Class 4 (42 Ω source) requirements.
For engineers reviewing the MAPLAD36KP54CAE3 datasheet, MAPLAD36KP54CAE3 pinout, MAPLAD36KP54CAE3 application, or MAPLAD36KP54CAE3 equivalent, key selection criteria include bidirectional clamping capability, 54 V working voltage match to 48 V rail systems, low-profile PLAD package thermal performance, and compliance with aircraft lightning injection (DO-160F) and industrial surge immunity (IEC 61000-4-5) standards.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging avalanche breakdown across its silicon junction to divert surge energy away from protected circuitry. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, and its low RθJC (1.0 °C/W) supports direct mounting to heatsinks or copper pour for sustained multi-stroke operation.
The device is characterized for 10/1000 μs waveform testing per IEC 61000-4-5 and RTCA DO-160F, with verified clamping voltage (VC) ≤87.1 V at IPP = 414 A, standby leakage <10 μA at VWM, and temperature coefficient of breakdown voltage αV(BR) = +64 mV/°C - enabling predictable derating over -55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 54 V - matches nominal 48 V DC systems with 12.5% margin above max operating voltage |
| Breakdown Voltage (VBR) | 60–66.3 V @ 5 mA - defines minimum conduction threshold under transient stress |
| Clamping Voltage (VC) | ≤87.1 V @ 414 A - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Standby Leakage Current | <10 μA @ 54 V - negligible power loss in quiescent 48 V rail monitoring |
| Operating Temperature Range | -55°C to +150°C - supports engine bay, avionics bay, and outdoor industrial deployment |
Pinout & Package
The MAPLAD36KP54CAE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), matte-tin-plated terminals, and metal base cathode connection on unidirectional variants. For bidirectional devices like MAPLAD36KP54CAE3, polarity is non-directional; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Both terminals conduct identically during positive or negative transients - no orientation required during placement |
| Metal base (bottom surface) | Thermal interface | Direct thermal conduction path to PCB copper pour or heatsink - critical for PPP derating at elevated ambient |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled data lines, differential buses, or floating power domains without polarity constraints |
| 3σ lot norm screening on standby current (ID) | Ensures consistent low-leakage performance across production lots for reliable long-term 48 V rail monitoring |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and chassis applications subject to vibration, thermal cycling, and humidity |
| RTCA DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injection lightning transients up to 200 V open-circuit in aircraft systems |
| Moisture sensitivity level 1 (J-STD-020B) | Eliminates dry-pack requirement and floor-life limitations - supports standard SMT assembly without baking |
Applications
| Aircraft Avionics Power Input | Automotive 48 V Mild Hybrid DC Bus |
|---|---|
Use Scenario: Protection of 28 V and 48 V primary power inputs in flight control computers, inertial navigation units, and communication radios exposed to DO-160F lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS clamp placed upstream of DC/DC converters and EMI filters to absorb multi-stroke lightning energy before it reaches sensitive analog and digital circuitry. Use Value: Meets RTCA DO-160F Section 22 Waveform 4 Level 4 (6.4/69 μs) with ≤87.1 V clamping - preventing latch-up or burnout in downstream PMICs and FPGAs. | Use Scenario: Surge suppression on 48 V battery feed lines in mild hybrid vehicles, guarding against load dump and alternator switching transients. IC Role / Device Role / Timing Role: High-power crowbar device mounted directly to chassis-grounded copper pour to shunt >400 A transients away from 48 V DC/DC modules and motor controllers. Use Value: 36 kW PPP rating and 1.0 °C/W RθJC enable repeated 12 V load dump events without thermal runaway - validated per ISO 7637-2 Pulse 5a. |
| Industrial Ethernet Switch Power Rail | Railway Signaling Interface Protection |
Use Scenario: Secondary surge protection on PoE++ (IEEE 802.3bt) 54 V power rails feeding high-density switch ASICs and PHYs. IC Role / Device Role / Timing Role: Back-to-back clamping element placed after primary GDT or MOV to limit let-through voltage to sub-90 V levels during IEC 61000-4-5 42 Ω Class 4 surges. Use Value: Bidirectional symmetry ensures identical clamping for both polarities of PoE power delivery - eliminating need for dual-device solutions. | Use Scenario: Protection of 54 V signaling interfaces in European railway signaling cabinets subjected to induced lightning surges per EN 50121-4. IC Role / Device Role / Timing Role: Fast-response TVS deployed at cabinet entry points to clamp common-mode transients before they couple into CANopen or MVB bus receivers. Use Value: 54 V VWM precisely aligns with EN 50121-4 specified 54 V nominal signaling voltage - minimizing false triggering while maintaining margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA | 600 W PPP rating, SMA package, RθJA = 50 °C/W - lacks multi-stroke capability and DO-160F validation | Consumer-grade board-level protection only; unsuitable for aerospace or automotive safety-critical paths | Select only for cost-sensitive, low-energy applications where 36 kW surge capacity is unnecessary |
| SMCJ54CA | 1500 W PPP, SMC package, RθJC = 2.5 °C/W - insufficient for repeated lightning strokes or high-ambient environments | Industrial control panels with moderate surge exposure; not qualified to AEC-Q101 or DO-160F | Choose when footprint compatibility with legacy SMC layouts is required but full MAPLAD36KP54CAE3 performance is not needed |
Compared with SMBJ54CA and SMCJ54CA, the MAPLAD36KP54CAE3 provides 60× higher peak power handling, 2.5× lower thermal resistance, and formal qualification to aviation and automotive reliability standards - making it the sole option for mission-critical 48–54 V system protection requiring multi-stroke endurance.
Availability
MAPLAD36KP54CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive 48 V power systems, and industrial Ethernet switch designs requiring stable component supply, long-lifecycle assurance, and certified surge immunity compliance.
Supply support for MAPLAD36KP54CAE3 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 PLAD-series TVS family was engineered specifically for high-energy, multi-stroke transient suppression in safety-critical platforms - emphasizing thermal robustness, DO-160F compliance, and AEC-Q101 qualification for harsh-environment deployment.
FAQ
What is the maximum clamping voltage of MAPLAD36KP54CAE3 at its rated peak pulse current?
The MAPLAD36KP54CAE3 has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current of 414 A under 10/1000 μs waveform conditions. This value is measured per IEC 61000-4-5 test methodology and guarantees that downstream circuitry remains below 90 V during worst-case surge events - critical for protecting 5 V and 3.3 V logic supplies fed from 48 V rails via DC/DC conversion.
Is MAPLAD36KP54CAE3 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, MAPLAD36KP54CAE3 is fully qualified to AEC-Q101 Rev D for stress testing including HTGB, HTRB, TCT, and mechanical shock. Its bidirectional construction, 54 V VWM, and 36 kW PPP rating make it appropriate for 48 V mild hybrid vehicle power distribution modules, battery disconnect units, and ADAS domain controllers where load dump and jump-start transients exceed 400 A.
Does MAPLAD36KP54CAE3 require moisture sensitivity handling prior to reflow soldering?
No, MAPLAD36KP54CAE3 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry packing or baking before SMT assembly. This simplifies manufacturing logistics and eliminates yield risk from moisture-induced popcorning during reflow - confirmed by Microsemi's qualification report RF01216 Rev B.
How does the thermal design of MAPLAD36KP54CAE3 differ from standard SMC/SMB TVS diodes?
MAPLAD36KP54CAE3 features a dedicated metal-base thermal interface with RθJC = 1.0 °C/W - over 2× lower than typical SMCJ (2.5 °C/W) or SMBJ (50 °C/W) packages. This allows direct conduction of surge energy into PCB copper or external heatsinks, enabling sustained multi-stroke operation without thermal runaway - a key differentiator for DO-160F Section 22 compliance.
Can MAPLAD36KP54CAE3 be used in bidirectional AC signal line protection?
Yes, MAPLAD36KP54CAE3 is explicitly designed as a bidirectional TVS (denoted by "CA" suffix) with symmetrical clamping characteristics. It protects differential pairs, RS-485 buses, and isolated power interfaces where transients may occur with either polarity - unlike unidirectional variants that require correct anode/cathode orientation and offer no negative-voltage clamping.
MAPLAD36KP54CAE3 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 414A
- Power - Peak Pulse:
- 36000W (36kW)
- 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
MAPLAD36KP54CAE3 FAQ
1.How can I place an order for MAPLAD36KP54CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP54CAE3 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 MAPLAD36KP54CAE3 reliable?
The price and inventory of MAPLAD36KP54CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP54CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP54CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP54CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP54CAE3?
MAPLAD36KP54CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP54CAE3 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 MAPLAD36KP54CAE3?
For technical support, including MAPLAD36KP54CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP54CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP54CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP54CAE3 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 MAPLAD36KP54CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP54CAE3?
All MAPLAD36KP54CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP54CAE3, 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 MAPLAD36KP54CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP54CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP54CAE3 Tags
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