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Microchip Technology MAPLAD36KP58CA
- Part No.:
- MAPLAD36KP58CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP58CA.pdf
- Description:
- TVS DIODE 58VWM 93.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,265
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Product details
Overview
MAPLAD36KP58CA 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 transients to ≤93.6 V at 385 A, and features a 58 V reverse standoff voltage (VWM) with ±10% breakdown tolerance (64.4–71.2 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Level 5 pin injection (Waveform 4) and IEC 61000-4-5 Class 5 secondary lightning protection.
For engineers reviewing the MAPLAD36KP58CA datasheet, MAPLAD36KP58CA pinout, MAPLAD36KP58CA application, or MAPLAD36KP58CA equivalent, this device is selected for high-reliability DC bus protection where multi-stroke lightning immunity, low thermal resistance (1.0 °C/W junction-to-case), and RoHS-compliant SMT mounting are mandatory - especially in avionics power distribution units and vehicle ECU front-end circuits.
Technical Context
This TVS diode operates as a voltage-clamped crowbar during transient overvoltage events, leveraging avalanche breakdown in silicon PN junctions. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal/power lines, and its void-free thermosetting epoxy package ensures mechanical robustness under thermal cycling.
The device is characterized for operation across –55 °C to +150 °C, with thermal resistance junction-to-ambient of 50 °C/W on FR4 (per recommended pad layout) and junction-to-case of 1.0 °C/W when mounted on a heatsink. Standby current ID is ≤10 μA at 58 V, and temperature coefficient αV(BR) is +70 mV/°C.
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 in aircraft power systems. |
| Reverse Standoff Voltage (VWM) | 58 V - maximum continuous operating voltage before clamping initiates; matches 48 V nominal DC bus with margin. |
| Clamping Voltage (VC) | 93.6 V @ 385 A - limits downstream voltage stress to safe levels for 60 V-rated MOSFETs and controllers. |
| Breakdown Voltage (V(BR)) | 64.4–71.2 V @ 5 mA - defines precise conduction threshold; tight 10% tolerance ensures predictable turn-on. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables effective heat transfer to PCB copper or external heatsink, critical for repeated surge duty. |
| Steady-State Power Dissipation | 71 W @ TC = 100 °C - supports continuous thermal management in high-ambient industrial enclosures. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required prior to reflow, simplifying manufacturing flow. |
Pinout & Package
MAPLAD36KP58CA uses a surface-mount PLAD package (plastic leaded anode/cathode) with two terminals: anode and cathode. The metal base serves as the cathode terminal for bidirectional operation; polarity marking is not present on bidirectional variants. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), with recommended pad layout per RF01216 Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during positive transient | Connects to protected line; forms one side of symmetrical clamping path in bidirectional configuration. |
| Cathode (metal base) | Current exit point during positive transient; anode during negative transient | Serves as common reference plane; requires direct thermal connection to large copper pour or heatsink for RθJC = 1.0 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled or floating differential buses without polarity constraints. |
| AEC-Q101 qualification | Validates reliability for automotive electronic control units under temperature cycling, humidity, and mechanical shock. |
| RTCA DO-160F Waveform 4 Level 5 compliance | Guarantees survivability against 6.4/69 μs pin-injected transients up to 58 V standoff in avionics installations. |
| Void-free UL94V-0 epoxy body | Prevents internal delamination under thermal stress and meets flammability requirements for enclosed systems. |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, 3σ screening on ID, and conformance inspection. |
Applications
| Aerospace Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Protection of 28 V DC main bus in commercial aircraft avionics bays exposed to DO-160 Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Primary transient suppression device placed at bus entry point to limit voltage excursions below 100 V. Use Value: Enables compliance with RTCA DO-160F Level 5 pin injection and multi-stroke lightning standards without derating. |
Use Scenario: Front-end protection of 12 V/24 V power input to engine control modules subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: High-power crowbar element that clamps transients within 5 ns to prevent MCU reset or gate driver latch-up. Use Value: Withstands 36 kW surges while maintaining <10 μA leakage at 58 V, preserving battery drain budgets. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
|
Use Scenario: Surge protection on 400 V DC link capacitors in variable-frequency drives exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: Secondary protection stage after MOVs, absorbing residual energy with precise 93.6 V clamping ceiling. Use Value: Junction-to-case thermal resistance of 1.0 °C/W allows direct mounting to aluminum heatsink, enabling >1000 surge cycles. |
Use Scenario: Bidirectional protection of 72 V signaling lines between trackside electronics and centralized control systems. IC Role / Device Role / Timing Role: Symmetrical TVS suppressing both positive and negative polarity surges from traction current coupling. Use Value: Meets IEC 61000-4-5 Class 5 (42 Ω source) for long-distance rail links, clamping to ≤93.6 V at 385 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Lower PPP rating (600 W vs. 36,000 W); same VWM and bidirectional polarity. | Not suitable for DO-160F Level 5 or IEC 61000-4-5 Class 5; limited to consumer-grade surge environments. | Select SMBJ58CA only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary. |
| SMCJ58CA | PPP = 1500 W; larger SMC package; higher RθJA (12 °C/W vs. 50 °C/W on FR4). | Lacks AEC-Q101 and DO-160F qualification; insufficient for aerospace multi-stroke testing. | Choose SMCJ58CA for industrial controls with moderate surge exposure but no aviation certification requirements. |
Compared with SMBJ58CA and SMCJ58CA, MAPLAD36KP58CA provides 60× and 24× higher peak pulse power respectively, validated clamping performance under RTCA DO-160F Level 5, and thermal design support for sustained high-current surge duty - making it uniquely suited for certified aerospace and high-end automotive platforms.
Availability
MAPLAD36KP58CA is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU front-end protection, and industrial motor drive DC link applications requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for MAPLAD36KP58CA 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 power management solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP58CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical systems where multi-stroke endurance and thermal stability are non-negotiable.
FAQ
What is the clamping voltage of MAPLAD36KP58CA at its rated peak pulse current?
The MAPLAD36KP58CA has a maximum clamping voltage (VC) of 93.6 V at 385 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per the datasheet and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping occurs within <5 ns for bidirectional operation, ensuring fast response to fast-rising transients encountered in avionics and automotive systems. MAPLAD36KP58CA maintains this performance across its full operating temperature range.
Is MAPLAD36KP58CA qualified for automotive use per AEC-Q101?
Yes, MAPLAD36KP58CA is explicitly tested and qualified to AEC-Q101 standards for stress testing including temperature cycling, humidity bias, and mechanical shock. This qualification confirms its suitability for under-hood and powertrain applications where reliability under thermal and vibration stress is critical. The device also meets additional automotive-relevant requirements such as low standby current (<10 μA at 58 V) and robust solderability per MIL-STD-750. MAPLAD36KP58CA is referenced in Microsemi's AEC-Q101 documentation for the PLAD family.
Does MAPLAD36KP58CA require moisture sensitivity handling before reflow?
No, MAPLAD36KP58CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking prior to reflow soldering. This eliminates process steps and reduces manufacturing risk. The void-free UL94V-0 epoxy body contributes to this robust moisture resistance. MAPLAD36KP58CA is shipped in standard tape-and-reel (TR suffix optional) or bulk packaging with no special humidity-controlled handling required.
How does MAPLAD36KP58CA meet RTCA DO-160F lightning protection requirements?
MAPLAD36KP58CA meets RTCA DO-160F Section 22 multi-stroke lightning standards and Waveform 4 (6.4/69 μs) Level 5 pin injection requirements when used with appropriate PCB layout and thermal management. Its 36,000 W PPP rating and 93.6 V clamping ceiling ensure compliance with the 58 V standoff class. The device is validated for repeated surge application per test methodology in MicroNote 132, and MAPLAD36KP58CA is explicitly listed in the DO-160F compliance table for Level 5 up to 300 V standoff.
What is the thermal resistance profile of MAPLAD36KP58CA, and how does it affect layout?
MAPLAD36KP58CA has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W and junction-to-ambient (RθJA) of 50 °C/W on FR4 with the recommended pad layout. This means effective heat extraction requires direct thermal connection of the metal cathode base to a large copper pour or external heatsink. Layout must follow the pad dimensions in RF01216 Rev B: 11.94 mm × 5.85 mm thermal pad with 2.44 mm solder mask opening. Failure to implement this compromises MAPLAD36KP58CA's ability to sustain repeated 36 kW surges.
MAPLAD36KP58CA 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):
- 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
MAPLAD36KP58CA FAQ
1.How can I place an order for MAPLAD36KP58CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP58CA 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 MAPLAD36KP58CA reliable?
The price and inventory of MAPLAD36KP58CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP58CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP58CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP58CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP58CA?
MAPLAD36KP58CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP58CA 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 MAPLAD36KP58CA?
For technical support, including MAPLAD36KP58CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP58CA requirements.
6.How does Aetrix verify that MAPLAD36KP58CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP58CA 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 MAPLAD36KP58CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP58CA?
All MAPLAD36KP58CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP58CA, 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 MAPLAD36KP58CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP58CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP58CA 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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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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