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Microchip Technology MAPLAD36KP110CA
- Part No.:
- MAPLAD36KP110CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP110CA.pdf
- Description:
- TVS DIODE 110VWM 177VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,464
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Product details
Overview
MAPLAD36KP110CA 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 kW peak pulse power at 10/1000 μs, clamps transients to ≤177 V at 204 A, and features a 110 V reverse standoff voltage (VWM), 122–135 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per IEC 61000-4-5 and RTCA DO-160F Waveform 4 Level 4.
For engineers reviewing the MAPLAD36KP110CA datasheet, MAPLAD36KP110CA pinout, MAPLAD36KP110CA application, or MAPLAD36KP110CA equivalent, this device is selected for high-reliability DC bus protection where multi-stroke lightning immunity, low-profile SMT mounting, and traceable MIL-PRF-19500 upscreening options are required - especially in avionics power distribution and vehicle ECU interfaces.
Technical Context
This bidirectional TVS uses silicon avalanche diode technology with void-free thermosetting epoxy packaging (UL94V-0) and tin-plated terminals solderable per MIL-STD-750 Method 2026. Its metal-base cathode construction provides direct thermal path to PCB copper, supporting 50 °C/W junction-to-ambient dissipation when mounted on FR4 with recommended pad layout.
It meets AEC-Q101 stress testing requirements and supports secondary lightning protection across multiple source impedances: 42 Ω (IEC 61000-4-5 Class 1–5), 12 Ω (Class 1–4), and 2 Ω (Class 2–4), with verified clamping performance under RTCA DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at specified temperature derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 110 V - maximum continuous DC or peak AC voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 122–135 V @ 5 mA - precise avalanche initiation threshold for predictable clamping onset |
| Max Clamping Voltage (VC) | 177 V @ 204 A - limits downstream voltage stress during worst-case surge events |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour for repeated surge duty |
| Steady-State Power Dissipation | 71 W @ TC = 100°C - supports continuous bias operation with active thermal management |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required prior to reflow |
Pinout & Package
MAPLAD36KP110CA uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is the metal base (bottom side) of the device; polarity marking applies only to unidirectional variants - bidirectional devices like MAPLAD36KP110CA have symmetrical terminal behavior and no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Surge current entry point (bidirectional) | Accepts transient energy from either polarity; connects to protected line |
| Cathode (metal base) | Surge current return path (bidirectional) | Provides low-inductance thermal and electrical path to PCB ground plane or heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Protects AC or floating DC lines without polarity constraints - eliminates need for dual-device placement |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 110 V VWM rating - validated for avionics signal/power lines |
| MIL-PRF-19500 upscreening option | Enables high-reliability screening (M, MA, MX, MXL levels) with full wafer/lot traceability for defense/aerospace programs |
| Low-profile SMT footprint | 0.490" × 0.205" × 0.020" (12.45 × 5.21 × 0.51 mm) - fits space-constrained avionics modules without height clearance issues |
| RoHS-compliant (e3) plating | Matte-tin termination compatible with lead-free reflow profiles and IPC-A-610 Class 3 assembly requirements |
Applications
| Avionics Power Distribution | Automotive ECU Protection |
|---|---|
Use Scenario: 28 V DC main bus in commercial aircraft, exposed to lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on power input stage, placed upstream of DC-DC converters and bus monitors. Use Value: Limits bus voltage to ≤177 V during 36 kW multi-stroke events, preventing latch-up or destruction of downstream PMICs and microcontrollers. |
Use Scenario: 12 V/24 V power rail in engine control unit subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: High-energy TVS parallel to input filter capacitor, absorbing >100 A transients within nanoseconds. Use Value: Maintains system uptime by clamping load dump peaks below 177 V while surviving >1000 surge cycles per AEC-Q101 test protocol. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: 300 V DC link in variable-frequency drive exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: Bidirectional clamp across DC+ and DC− rails, suppressing common-mode and differential surges simultaneously. Use Value: Prevents IGBT gate driver damage by limiting rail overvoltage to 177 V at 204 A, with thermal design margin enabled by 1.0 °C/W RθJC. |
Use Scenario: 110 V signaling line in European railway interlocking system requiring EN 50121-3-2 surge immunity. IC Role / Device Role / Timing Role: Line-end protector on track circuit interface, rated for 42 Ω source impedance per IEC 61000-4-5 Class 4. Use Value: Achieves certified Class 4 immunity (4 kV) without external series impedance, reducing BOM count and board area vs. discrete RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110CA | 600 W PPP rating, 5.0 mm × 3.5 mm SMA package, 1.5 °C/W RθJC | Rated for consumer/industrial use only; not qualified to DO-160 or MIL-PRF-19500 | Select for cost-sensitive non-aerospace designs where 36 kW surge capacity is unnecessary |
| Vishay SM8S110CA | 6600 W PPP, 8.1 mm × 6.2 mm SM8 package, 0.9 °C/W RθJC, AEC-Q101 qualified | Supports automotive but lacks DO-160F Waveform 4/5A validation and MIL upscreening options | Choose for automotive ECU protection needing higher reliability than SMAJ but lower cost than MAPLAD-grade screening |
Compared with SMAJ110CA and SM8S110CA, MAPLAD36KP110CA delivers 6× and 5.5× higher peak pulse power respectively, with certified avionics-level transient immunity, metal-base thermal performance, and military-grade traceability - making it irreplaceable in safety-critical airborne systems despite higher unit cost.
Availability
MAPLAD36KP110CA is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, industrial motor drive DC bus, and railway signaling interface applications requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP110CA 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP110CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection in mission-critical platforms where thermal robustness, waveform-specific compliance, and lot-level traceability are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP110CA at its rated peak pulse current?
The MAPLAD36KP110CA has a maximum clamping voltage (VC) of 177 V at 204 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuits during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is MAPLAD36KP110CA suitable for RTCA DO-160F Section 22 lightning protection?
Yes, MAPLAD36KP110CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. It meets Waveform 4 Level 4 (6.4/69 μs) up to 110 V VWM and Waveform 5A Level 4 (40/120 μs) up to 78 V VWM, with temperature derating guidance provided in MicroNote 132 - confirming its qualification for primary secondary protection in certified avionics equipment.
Does MAPLAD36KP110CA require special PCB layout considerations?
Yes, MAPLAD36KP110CA requires adherence to the recommended pad layout in RF01216 Rev B: 0.470" × 0.230" copper pads with 0.100" spacing. Its metal-base cathode must be soldered directly to a large copper pour or heatsink to achieve the specified 1.0 °C/W RθJC. Short, wide traces are mandatory to minimize inductance and preserve nanosecond response time during surge events.
What screening options are available for MAPLAD36KP110CA beyond standard commercial grade?
MAPLAD36KP110CA supports MIL-PRF-19500 upscreening to M, MA, MX, and MXL reliability levels, including wafer lot traceability, 3σ standby current screening, and conformance inspections detailed in the Hirel Non-Hermetic Product Portfolio brochure. These options are factory-orderable with appropriate suffixes and documentation packages for defense and space programs.
How does the bidirectional construction of MAPLAD36KP110CA affect its circuit implementation?
The bidirectional construction of MAPLAD36KP110CA means it conducts symmetrically for both positive and negative transients - eliminating polarity concerns during placement and enabling single-device protection of AC-coupled or floating DC lines. Unlike unidirectional TVS diodes, MAPLAD36KP110CA has no cathode marking and functions identically regardless of orientation across the protected nodes.
MAPLAD36KP110CA 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 204A
- 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
MAPLAD36KP110CA FAQ
1.How can I place an order for MAPLAD36KP110CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP110CA 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 MAPLAD36KP110CA reliable?
The price and inventory of MAPLAD36KP110CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP110CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP110CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP110CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP110CA?
MAPLAD36KP110CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP110CA 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 MAPLAD36KP110CA?
For technical support, including MAPLAD36KP110CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP110CA requirements.
6.How does Aetrix verify that MAPLAD36KP110CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP110CA 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 MAPLAD36KP110CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP110CA?
All MAPLAD36KP110CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP110CA, 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 MAPLAD36KP110CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP110CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP110CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
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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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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