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Microchip Technology MAPLAD36KP75AE3
- Part No.:
- MAPLAD36KP75AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP75AE3.pdf
- Description:
- TVS DIODE 75VWM 121VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,415
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Product details
Overview
MAPLAD36KP75AE3 from Microsemi is a unidirectional 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 at ≤121 V under 298 A peak impulse current, and features a 75 V reverse standoff voltage (VWM), 83.3–92.1 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP75AE3 datasheet, MAPLAD36KP75AE3 pinout, MAPLAD36KP75AE3 application, or MAPLAD36KP75AE3 equivalent, this device is selected for RTCA DO-160 Section 22 multi-stroke lightning compliance, load dump suppression in 24 V vehicle architectures, and secondary IEC 61000-4-5 Class 3/4 protection with 42 Ω source impedance.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, triggered when transient voltage exceeds its specified V(BR) range of 83.3–92.1 V at 5 mA test current. Its low RθJC (1.0 °C/W) enables effective heat transfer to the PCB copper pad or heatsink, supporting repeated surge events at ≤0.05% duty factor per Figure 2.
It meets AEC-Q101 stress testing requirements and is rated for junction temperatures from –55 °C to +150 °C. The RoHS-compliant e3 matte-tin plating ensures solderability per MIL-STD-750 Method 2026, and moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced transients without failure |
| Reverse Standoff Voltage (VWM) | 75 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 83.3–92.1 V @ 5 mA - precise conduction threshold enabling predictable protection margin |
| Clamping Voltage (VC) | ≤121 V @ 298 A - limits downstream circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct thermal coupling to PCB copper for reliable multi-pulse operation |
| Steady-State Power Dissipation | 71 W @ TC = 100 °C - supports sustained thermal management on heatsink-mounted designs |
| Moisture Sensitivity Level | IPC/JEDEC J-STD-020B Level 1 - zero bake requirement prior to reflow |
Pinout & Package
MAPLAD36KP75AE3 uses the PLAD surface-mount package: void-free UL94V-0 thermosetting epoxy body (12.32 × 10.54 × 5.08 mm), tin-lead–free matte-tin (e3) terminations, and cathode identified by metal base (bottom side). Polarity marking appears only on unidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry path | Connected to protected line; conducts surge current toward cathode during overvoltage |
| Cathode (metal base) | Transient current return path | Must be soldered to large copper pour or heatsink for thermal and electrical return integrity |
Key Features
| Feature | Design Value |
|---|---|
| RTCA DO-160F Waveform 4 & 5A compliance | Level 4 up to 300 V VWM and Level 5 up to 78 V VWM - certified for avionics pin-injection immunity |
| IEC 61000-4-5 secondary lightning protection | Class 3/4 validated with 42 Ω source impedance - meets airframe-level surge coordination |
| AEC-Q101 qualification | Qualified for automotive underhood applications including 12 V/24 V load dump |
| Low-profile SMT footprint | Height ≤5.33 mm - enables compact placement near connectors or power inputs without airflow obstruction |
| 3σ lot norm screening on ID | Standby leakage current controlled across production lots - ensures consistent system-level quiescent current |
Applications
| Aerospace Avionics Power Input Protection | Commercial Vehicle 24 V Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data bus power rails and sensor supply lines against lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Clamping-type transient suppressor placed directly at board edge connector input. Use Value: Limits clamped voltage to ≤121 V during 36 kW transients, preserving downstream LDOs and interface ICs rated for <130 V absolute max. |
Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events in heavy-duty trucks. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V main rail, coordinated with upstream fuse and downstream TVS arrays. Use Value: Absorbs 298 A peak current at 75 V standoff, preventing latch-up or burnout in microcontrollers operating at 5 V or 3.3 V. |
| Industrial Motor Drive DC Bus Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding gate driver supplies and feedback sensing circuits in variable-frequency drives exposed to switching transients. IC Role / Device Role / Timing Role: Fast-response clamping device mounted adjacent to IGBT gate driver ICs. Use Value: Sub-100 ps response time ensures clamping activation before transient energy couples into sensitive analog front-ends. |
Use Scenario: Securing 75 V signaling lines in European railway ETCS Level 2 balise communication interfaces against EFT and induced RFI. IC Role / Device Role / Timing Role: Secondary protection stage following gas discharge tube (GDT) primary arresters. Use Value: Provides low-clamp, low-leakage backup protection with <10 μA standby current at 75 V - avoids signal distortion in high-impedance lines. |
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 SP3022-070H | 70 V VWM, 1500 W PPP, SOD-323 package - lower power rating and smaller thermal mass | Targeted at low-energy ESD/EFT; not rated for DO-160 lightning waveforms or multi-stroke duty | Select when space-constrained consumer electronics require basic IEC 61000-4-2/4-4 protection only |
| Vishay SMAJ75A | 75 V VWM, 400 W PPP, SMA package - 90× lower peak power handling than MAPLAD36KP75AE3 | Suitable for board-level ESD and minor inductive kickback; cannot meet DO-160 or IEC 61000-4-5 Class 3+ | Choose for cost-sensitive industrial controls where surge energy remains below 500 W |
Compared with SP3022-070H and SMAJ75A, MAPLAD36KP75AE3 provides 90× higher peak power, certified multi-stroke lightning endurance, and AEC-Q101 qualification - making it uniquely suitable for mission-critical aerospace and commercial vehicle platforms requiring sustained 36 kW surge absorption.
Availability
MAPLAD36KP75AE3 is available at Aetrix Electronics and suitable for aerospace avionics, commercial vehicle ECUs, industrial motor drives, and railway signaling systems requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP75AE3 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.
MAPLAD36KP75AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump compliance in safety-critical environments.
FAQ
What is the clamping voltage of MAPLAD36KP75AE3 at its rated peak pulse current?
The MAPLAD36KP75AE3 exhibits a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current of 298 A under the standard 10/1000 μs waveform. This value is guaranteed per the manufacturer's electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is MAPLAD36KP75AE3 qualified for automotive applications?
Yes, MAPLAD36KP75AE3 is AEC-Q101 qualified and explicitly rated for automotive load dump protection. Its 75 V VWM and 36 kW surge capability align with ISO 7637-2 Pulse 5a/b requirements for 24 V systems, and its thermal design supports under-hood temperature cycling from –55 °C to +150 °C.
Does MAPLAD36KP75AE3 meet RTCA DO-160 lightning protection standards?
Yes, MAPLAD36KP75AE3 is validated for RTCA DO-160 Section 22 multi-stroke lightning testing. It achieves Level 4 pin injection protection per Waveform 4 (6.4/69 μs) up to 300 V VWM and Level 5 per Waveform 5A (40/120 μs) up to 78 V VWM - both confirmed in the RF01216 datasheet Rev B.
What is the thermal resistance specification for MAPLAD36KP75AE3?
MAPLAD36KP75AE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with case temperature controlled on a heatsink as specified. This low value enables efficient heat transfer from the silicon die to the PCB copper pad or external heatsink, critical for multi-pulse reliability in high-duty-cycle surge environments.
How is polarity identified on MAPLAD36KP75AE3?
MAPLAD36KP75AE3 is a unidirectional TVS diode with cathode polarity assigned to the metal base (underside) of the PLAD package. No top-side marking indicates polarity; instead, the cathode must be soldered to the system ground or low-impedance return plane, while the anode connects to the line being protected.
MAPLAD36KP75AE3 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 298A
- 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
MAPLAD36KP75AE3 FAQ
1.How can I place an order for MAPLAD36KP75AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP75AE3 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 MAPLAD36KP75AE3 reliable?
The price and inventory of MAPLAD36KP75AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP75AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP75AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP75AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP75AE3?
MAPLAD36KP75AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP75AE3 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 MAPLAD36KP75AE3?
For technical support, including MAPLAD36KP75AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP75AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP75AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP75AE3 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 MAPLAD36KP75AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP75AE3?
All MAPLAD36KP75AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP75AE3, 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 MAPLAD36KP75AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP75AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP75AE3 Tags
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