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Microchip Technology MAPLAD36KP58AE3
- Part No.:
- MAPLAD36KP58AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP58AE3.pdf
- Description:
- TVS DIODE 58VWM 93.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,015
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Product details
Overview
MAPLAD36KP58AE3 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 36 kW peak pulse power at 10/1000 μs, features a 58 V reverse standoff voltage (VWM), clamps transients to ≤93.6 V at 385 A peak current, and operates across –55°C to +150°C junction temperature - deployed in aircraft lightning protection per RTCA DO-160 Section 22.
For engineers reviewing the MAPLAD36KP58AE3 datasheet, MAPLAD36KP58AE3 pinout, MAPLAD36KP58AE3 application, or MAPLAD36KP58AE3 equivalent, this device is selected for secondary lightning protection (IEC 61000-4-5 Class 4 with 2 Ω source), pin-injection immunity (RTCA DO-160F Waveform 4 Level 5), and load-dump suppression where low thermal resistance (RθJC = 1.0 °C/W) and RoHS-compliant matte-tin plating are critical.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp fast-rising transients, with breakdown voltage V(BR) specified at 64.4–71.2 V under 5 mA test current. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting high-repetition-rate surge handling when mounted on FR4 with recommended pad layout.
The device meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. It provides ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and RFI suppression while maintaining <10 μA standby current at VWM - essential for low-power monitoring circuits in avionics power distribution units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous operating voltage before clamping begins; matches 48 V nominal aircraft bus with safety margin. |
| V(BR) min/max | 64.4 V / 71.2 V @ 5 mA - defines precise avalanche onset range for predictable clamping threshold. |
| VC @ IPP | 93.6 V max @ 385 A - limits downstream component stress during 10/1000 μs lightning surge. |
| PPP | 36,000 W @ 10/1000 μs - sustains multi-stroke lightning events without degradation. |
| RθJC | 1.0 °C/W - enables efficient heat transfer from junction to case, critical for sustained surge duty cycles. |
| ID @ VWM | 10 μA max - ensures negligible leakage in always-on power monitoring paths. |
| TJ range | –55°C to +150°C - supports operation in engine bay or avionics bay environments without derating. |
Pinout & Package
MAPLAD36KP58AE3 uses a thermally optimized surface-mount PLAD package with void-free UL94V-0 epoxy body and metal base acting as the cathode terminal. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) with tin-lead or RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface) | Transient current entry point | Connected to protected line; carries full surge current into avalanche junction. |
| Cathode (metal base) | Current return path & thermal interface | Soldered directly to large copper pour or heatsink; serves as primary thermal conduction path (RθJC = 1.0 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating | Enables compliance with RTCA DO-160 Section 22 multi-stroke lightning testing without derating. |
| Metal-base cathode construction | Reduces thermal resistance by >50% vs. standard SMD TVS, allowing higher impulse repetition rates. |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring robust surge immunity. |
| RoHS-compliant e3 marking | Meets global environmental compliance mandates without sacrificing surge performance or thermal reliability. |
| Traceable wafer and assembly lots | Supports full lot-level failure analysis and configuration control for aerospace OEM programs. |
Applications
| Aircraft Power Distribution Units | Automotive Engine Control Modules |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in airborne power management units against lightning-induced surges per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Primary transient voltage suppressor placed at board-level input connector to shunt energy before it reaches DC-DC converters and microcontrollers. Use Value: Clamps 10/1000 μs surges to ≤93.6 V while dissipating 36 kW, preventing latch-up or burnout in downstream ASICs rated for <100 V absolute maximum. | Use Scenario: Safeguarding 12 V/24 V supply rails in diesel engine control units exposed to ISO 7637-2 load dump transients. IC Role / Device Role / Timing Role: High-power TVS placed upstream of LDO regulators and CAN transceivers to absorb >100 V, 100 ms load dump pulses. Use Value: Withstands 385 A peak current and maintains <10 μA leakage at 58 V, ensuring no impact on low-current sensor bias networks. |
| Avionics Data Acquisition Systems | Railway Traction Control Interfaces |
Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) in flight data recorders from pin-injection transients per RTCA DO-160F Waveform 4. IC Role / Device Role / Timing Role: Localized TVS at connector entry point for shielded twisted-pair sensor cables, suppressing common-mode surges before signal conditioning stages. Use Value: Achieves Level 5 immunity (Waveform 4) up to 300 V VWM devices, enabling reliable operation in high-noise cockpit environments. | Use Scenario: Protecting Ethernet and RS-485 communication ports in onboard traction inverters subjected to IEC 61000-4-5 Class 4 surges (2 Ω source). IC Role / Device Role / Timing Role: Secondary surge protector installed after primary gas discharge tube, clamping residual energy to safe levels for PHY ICs. Use Value: Delivers 93.6 V clamping at 385 A with 1.0 °C/W thermal resistance, preventing thermal runaway during repeated 4 kV surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | 600 W PPP rating, 58 V VWM, DO-214AA package, RθJC ≈ 40 °C/W | Lower energy handling; suitable only for single-stroke or low-duty-cycle transients | Select SMBJ58A only for cost-sensitive industrial controls where 36 kW capability is unnecessary. |
| SMCJ58A | 1500 W PPP rating, 58 V VWM, DO-214AB package, RθJC ≈ 15 °C/W | Lacks RTCA DO-160 qualification and AEC-Q101 validation; limited to commercial-grade systems | Choose SMCJ58A for non-safety-critical telecom power supplies needing moderate surge headroom. |
Compared with SMBJ58A and SMCJ58A, MAPLAD36KP58AE3 provides 24× and 24× higher peak pulse power respectively, validated thermal performance for high-repetition surges, and formal qualification for aerospace and automotive safety-critical systems - making it irreplaceable where multi-stroke lightning or load dump immunity is mandated.
Availability
MAPLAD36KP58AE3 is available at Aetrix Electronics and suitable for aircraft power distribution, automotive engine control, and railway traction interface designs requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP58AE3 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
MAPLAD36KP58AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in mission-critical power systems.
FAQ
What is the clamping voltage of MAPLAD36KP58AE3 at its rated peak pulse current?
MAPLAD36KP58AE3 has a maximum clamping voltage (VC) of 93.6 V at its rated peak pulse current of 385 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry sees no more than 93.6 V during worst-case surge events. The clamping performance is validated across the full operating temperature range and forms the basis for system-level overvoltage design margins in MAPLAD36KP58AE3 deployments.
Is MAPLAD36KP58AE3 qualified for automotive applications?
Yes, MAPLAD36KP58AE3 is tested and qualified to AEC-Q101 for stress reliability in automotive environments. It meets requirements for temperature cycling, humidity bias, mechanical shock, and surge endurance - making it suitable for engine control modules, battery management systems, and ADAS power supplies. The device's 58 V VWM and 93.6 V clamping align with 48 V mild-hybrid architectures, and its metal-base thermal design supports under-hood thermal profiles without derating.
How does the metal base of MAPLAD36KP58AE3 improve thermal performance?
The metal base of MAPLAD36KP58AE3 serves as both the cathode terminal and primary thermal conduction path, achieving a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W. This is over 40× better than standard SMD TVS diodes and allows rapid heat dissipation into PCB copper pours or external heatsinks. In practice, this enables MAPLAD36KP58AE3 to sustain repeated 36 kW surges without thermal runaway - a key requirement for RTCA DO-160 multi-stroke lightning testing.
Does MAPLAD36KP58AE3 meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP58AE3 is explicitly rated for RTCA DO-160F Section 22 lightning-induced transient suppression. It achieves Level 5 pin-injection immunity for Waveform 4 (6.4/69 μs) up to 300 V VWM variants and supports multi-stroke testing per the standard's cumulative energy requirements. Its 36 kW peak pulse power, low clamping voltage, and validated thermal design make MAPLAD36KP58AE3 a preferred solution for aircraft power distribution units and avionics data acquisition systems.
What is the meaning of the 'E3' suffix in MAPLAD36KP58AE3?
'E3' in MAPLAD36KP58AE3 indicates RoHS-compliant matte-tin plating per JEDEC J-STD-020B, with moisture sensitivity level (MSL) 1 - meaning no dry-pack baking is required prior to reflow soldering. This suffix confirms full compliance with EU RoHS Directive 2011/65/EU and supports lead-free assembly processes. The 'E3' marking is laser-etched on the device body and verified through lot-level chemical analysis for every production batch of MAPLAD36KP58AE3.
MAPLAD36KP58AE3 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 385A
- 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
MAPLAD36KP58AE3 FAQ
1.How can I place an order for MAPLAD36KP58AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP58AE3 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 MAPLAD36KP58AE3 reliable?
The price and inventory of MAPLAD36KP58AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP58AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP58AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP58AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP58AE3?
MAPLAD36KP58AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP58AE3 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 MAPLAD36KP58AE3?
For technical support, including MAPLAD36KP58AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP58AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP58AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP58AE3 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 MAPLAD36KP58AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP58AE3?
All MAPLAD36KP58AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP58AE3, 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 MAPLAD36KP58AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP58AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP58AE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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