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Microchip Technology MAPLAD36KP110A
- Part No.:
- MAPLAD36KP110A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP110A.pdf
- Description:
- TVS DIODE 110VWM 177VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,201
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Product details
Overview
MAPLAD36KP110A 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, clamps at ≤177 V under 204 A peak impulse current, and features a 110 V reverse standoff voltage (VWM) with 122–135 V breakdown range (V(BR)). It meets RTCA DO-160 Section 22 multi-stroke lightning requirements and IEC 61000-4-5 Class 4/5 secondary lightning protection.
For engineers reviewing the MAPLAD36KP110A datasheet, MAPLAD36KP110A pinout, MAPLAD36KP110A application, or MAPLAD36KP110A equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, low-profile PLAD package with metal-base cathode, RoHS-compliant e3 plating, and validated performance under 42 Ω, 12 Ω, and 2 Ω source impedances per IEC 61000-4-5.
Technical Context
The MAPLAD36KP110A employs an avalanche diode structure optimized for fast response (<100 ps rise time) and high cumulative energy handling. Its metal-base thermal path enables direct heatsink mounting, supporting sustained operation under repetitive transients at ≤0.05% duty factor on FR4 PCBs with recommended pad layout.
It operates across –55°C to +150°C junction temperature, with 10 μA max standby current at 110 V, and exhibits a +132 mV/°C temperature coefficient of breakdown voltage - enabling predictable derating in high-temperature avionics environments.
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 - matches nominal 100 V DC bus systems while allowing margin for ripple and transients |
| Clamping Voltage (VC) | ≤177 V @ 204 A - limits downstream voltage stress to <1.6× VWM during worst-case surge |
| Breakdown Voltage (V(BR)) | 122–135 V @ 5 mA - ensures reliable conduction onset before system overvoltage damage |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to chassis or heatsink for stable multi-pulse operation |
| Standby Current (ID) | ≤10 μA @ 110 V - negligible leakage in always-on 100 V avionics power rails |
| Operating Temperature Range | –55°C to +150°C - qualified for engine bay, flight control, and radar subsystem environments |
Pinout & Package
The MAPLAD36KP110A uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), tin-lead or RoHS-compliant matte-tin terminals, and cathode on the metal base (underside). Polarity marking appears only on unidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top side) | Transient current entry point | Connected to protected line; carries full surge current into device |
| Cathode (metal base) | Transient current return path | Must be soldered to large copper area or heatsink for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW surge rating | Validated for RTCA DO-160 Section 22 multi-stroke lightning - supports certification in commercial aircraft |
| 1.0 °C/W RθJC | Enables >90% of rated PPP dissipation via metal-base thermal interface - eliminates need for external thermal vias |
| IEC 61000-4-5 Class 4/5 compliance | Passes 4 kV/42 Ω and 2 kV/2 Ω waveforms - protects against induced surges in long-harness vehicle systems |
| Moisture Sensitivity Level 1 | No dry pack or bake-out required before reflow - simplifies SMT assembly and reduces process cost |
| AEC-Q101 qualified | Screened for automotive underhood reliability - includes 3σ lot norm screening on ID and surge testing per JESD22-A114 |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 100 V DC distribution buses in regional jet flight control actuators exposed to lightning-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed at bus input to limit voltage excursion during DO-160 Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). Use Value: Clamps to ≤177 V within 100 ps, preventing latch-up or gate oxide rupture in downstream 200 V-rated MOSFETs and PMICs. |
Use Scenario: Load-dump suppression on 12 V/42 V dual-battery hybrid ECU power inputs during alternator regulation failure. IC Role / Device Role / Timing Role: Primary surge shunt positioned between battery rail and DC-DC converter input, rated for 36 kW pulses. Use Value: Absorbs 120 V/100 ms load dump energy without degradation, maintaining <10 μA leakage to preserve sleep-mode current budget. |
| Industrial Motor Drive DC Link | Railway Signaling Power Supply |
Use Scenario: Protection of 110 V DC link in traction inverter auxiliary power supplies subjected to switching-induced transients. IC Role / Device Role / Timing Role: High-power TVS mounted directly to aluminum heatsink, clamping IGBT gate driver supply rail during dV/dt events. Use Value: 1.0 °C/W thermal resistance allows continuous 36 kW pulse handling at 0.05% duty cycle - avoids thermal runaway during repeated braking cycles. |
Use Scenario: Secondary lightning protection for 110 V signaling power in track-side interlocking cabinets per EN 50121-4. IC Role / Device Role / Timing Role: IEC 61000-4-5 Class 4 compliant TVS installed at cabinet entry point with 42 Ω source impedance. Use Value: Limits induced surge to <177 V at 204 A - ensures compatibility with 200 V-rated isolation amplifiers and optocouplers in safety-critical logic. |
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 SP36-110 | Same 110 V VWM and 36 kW rating, but 1.5 °C/W RθJC and no AEC-Q101 qualification | Lacks automotive-grade screening and higher thermal resistance limits multi-pulse use in engine compartments | Preferred where cost sensitivity outweighs thermal or automotive qualification needs |
| Vishay SMAJ110A | Lower 400 W PPP rating, DO-214AC package, 50 °C/W RθJA only | Suitable for board-level ESD but not for lightning or load-dump - cannot replace MAPLAD36KP110A in high-energy scenarios | Select only for low-energy signal-line protection; not a functional alternative for 36 kW applications |
Compared with SP36-110 and SMAJ110A, the MAPLAD36KP110A uniquely combines aerospace-grade lightning robustness, AEC-Q101 qualification, and 1.0 °C/W thermal performance - making it the sole option for certified 100 V DC bus protection requiring multi-stroke survivability and chassis-level thermal management.
Availability
MAPLAD36KP110A is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU load-dump protection, and industrial motor drive DC link applications requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP110A 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP110A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical 100 V DC systems where thermal stability and multi-event survivability are mandatory.
FAQ
What is the maximum clamping voltage of the MAPLAD36KP110A under surge conditions?
The MAPLAD36KP110A has a maximum clamping voltage (VC) of 177 V at 204 A peak pulse current under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and ensures downstream components see voltage limited to less than 1.6× the 110 V standoff rating - critical for protecting 200 V-rated power semiconductors in avionics and automotive systems.
Is the MAPLAD36KP110A qualified for automotive underhood applications?
Yes, the MAPLAD36KP110A is AEC-Q101 qualified and screened per MIL-PRF-19500 high-reliability standards. It undergoes 3σ lot norm screening on standby current and full-surge testing, with operational capability from –55°C to +150°C - meeting requirements for engine control units, transmission controllers, and other underhood modules subject to thermal cycling and mechanical vibration.
How does the PLAD package of the MAPLAD36KP110A improve thermal performance?
The MAPLAD36KP110A's PLAD package features a metal base that serves as both cathode terminal and primary thermal path, achieving a junction-to-case thermal resistance of just 1.0 °C/W. This allows direct mounting to a heatsink or large copper plane, dissipating >90% of 36 kW surge energy conductively - eliminating reliance on less efficient PCB conduction and preventing thermal runaway during repetitive transients.
Does the MAPLAD36KP110A meet RTCA DO-160 lightning test requirements?
Yes, the MAPLAD36KP110A is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at Level 4 and Level 5. Its 36 kW rating and sub-100 ps response ensure compliance with aircraft certification requirements for primary and secondary lightning protection zones.
What is the polarity configuration and marking convention for the MAPLAD36KP110A?
The MAPLAD36KP110A is a unidirectional TVS with cathode on the metal base (underside) and anode on the top-side metallization. No polarity symbol appears on the body - orientation is defined by mechanical placement: the metal base must be soldered to the system ground or heatsink plane, while the top-side pad connects to the protected line. This configuration is confirmed in Microsemi's RF01216 Rev B datasheet, Figure "POLARITY SYMBOL ON UNIDIRECTIONAL VERSIONS ONLY".
MAPLAD36KP110A 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):
- 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
MAPLAD36KP110A FAQ
1.How can I place an order for MAPLAD36KP110A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP110A 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 MAPLAD36KP110A reliable?
The price and inventory of MAPLAD36KP110A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP110A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP110A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP110A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP110A?
MAPLAD36KP110A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP110A 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 MAPLAD36KP110A?
For technical support, including MAPLAD36KP110A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP110A requirements.
6.How does Aetrix verify that MAPLAD36KP110A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP110A 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 MAPLAD36KP110A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP110A?
All MAPLAD36KP110A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP110A, 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 MAPLAD36KP110A part is unused and in its original packaging.
Return procedure for MAPLAD36KP110A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP110A 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
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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