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Microchip Technology MAPLAD36KP64A
- Part No.:
- MAPLAD36KP64A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP64A.pdf
- Description:
- TVS DIODE 64VWM 103VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,600
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Product details
Overview
MAPLAD36KP64A 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 ≤103.0 V under 350 A peak impulse current, and operates with 64 V reverse standoff voltage (VWM), meeting RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP64A datasheet, MAPLAD36KP64A pinout, MAPLAD36KP64A application, or MAPLAD36KP64A equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 & 5A, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
The MAPLAD36KP64A employs an avalanche diode structure optimized for low clamping ratio and minimal thermal resistance. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, achieving RθJC = 1.0 °C/W and RθJA = 50 °C/W on FR4 with recommended pad layout.
It supports both steady-state power dissipation (2.5 W at TA = 25°C) and high-repetition transients (≤0.05% duty factor), with temperature coefficient of breakdown voltage αV(BR) = 75 mV/°C and full derating above 100°C case temperature per Figure 3.
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) | 64 V - matches nominal 48–60 V DC bus systems in avionics and commercial vehicle ECUs |
| Max Clamping Voltage (VC) | 103.0 V @ IPP = 350 A - limits downstream IC stress below 120 V absolute maximum rating |
| Breakdown Voltage (V(BR)) | 71.1–78.6 V @ 5 mA - ensures reliable conduction onset above operating voltage with margin |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables direct mounting to thermal plane for sustained multi-pulse operation |
| Standby Current (ID) | 10 μA @ VWM - negligible leakage in always-on 28/270 V DC distribution networks |
| Temperature Coefficient | 75 mV/°C - predictable V(BR) drift allows accurate system-level overvoltage margining |
Pinout & Package
MAPLAD36KP64A uses a thermally enhanced PLAD (Plastic Low-profile Anode-down) package with metal base cathode terminal and single anode pad. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H) and features void-free UL94V-0 epoxy molding and matte-tin plating compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary thermal path and high-current return node; must be soldered to large copper pour or heatsink |
| Top Surface Pad | Anode | Signal-side connection point; routed with minimum trace length to protected line |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT construction | Enables placement on dense avionics PCBs without height clearance conflict (<5.33 mm max) |
| RTCA DO-160F Waveform 4 & 5A compliance | Supports Level 4/5 pin-injection immunity in flight-critical sensor and comms modules |
| IEC 61000-4-5 Class 5 secondary lightning protection | Validated for 42 Ω and 12 Ω source impedance configurations in short- and long-distance wiring |
| MIL-PRF-19500 upscreening option | Enables M, MA, MX, or MXL reliability levels for space-qualified or mission-critical deployments |
| AEC-Q101 qualified | Meets automotive-grade stress testing for under-hood ECU and ADAS power rail protection |
Applications
| Avionics Power Distribution | Commercial Vehicle ECUs |
|---|---|
Use Scenario: Protection of 270 V DC bus inputs in flight control computers against lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient shunt element placed at board entry point before DC-DC converters and FPGAs. Use Value: Limits clamped voltage to 103 V, preserving 120 V-rated input capacitors and gate drivers during multi-stroke events. | Use Scenario: Load dump suppression on 24 V CAN gateway modules exposed to ISO 7637-2 Pulse 5a/b. IC Role / Device Role / Timing Role: High-power TVS placed across battery input to clamp 120 V spikes within 100 ns. Use Value: Absorbs 36 kW peak energy without degradation, eliminating need for series fusing or derating. |
| Industrial Motor Drives | Railway Signaling Interfaces |
Use Scenario: Surge protection on 48 V auxiliary power rails feeding servo amplifier logic supplies. IC Role / Device Role / Timing Role: Secondary protection stage after upstream MOVs, handling fast-rising switching transients. Use Value: Sub-100 ns response time prevents latch-up in isolated gate drivers during IGBT commutation noise. | Use Scenario: ESD and surge hardening of 64 V trackside Ethernet PHY interfaces subject to induced RFI and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MAPLAD36KP64CA) used for full-duplex data line protection. Use Value: 10 μA standby current avoids signal integrity impact on 100BASE-TX common-mode voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | 600 W PPP rating, 5.0 mm × 4.5 mm SMB package, RθJC ≈ 25 °C/W | Limited to single-stroke events; insufficient for DO-160 multi-stroke validation | Select only for cost-sensitive industrial controls where 36 kW surge capacity is not required |
| SMCJ64A | 1500 W PPP, SMC package, 7.1 mm × 6.2 mm footprint, RθJC ≈ 15 °C/W | Cannot meet IEC 61000-4-5 Class 5 with 42 Ω source impedance per test data | Acceptable for automotive load dump where peak current ≤ 100 A and repetition rate is low |
Compared with SMBJ64A and SMCJ64A, the MAPLAD36KP64A provides 24× and 24× higher peak pulse power respectively, enabling validated compliance with RTCA DO-160F Section 22 and IEC 61000-4-5 Class 5-critical for aerospace and high-reliability rail applications where single-point failure is unacceptable.
Availability
MAPLAD36KP64A is available at Aetrix Electronics and suitable for avionics power distribution, commercial vehicle ECUs, and industrial motor drives requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP64A 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, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP64A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and mission-critical surge immunity in safety-certified electronic systems.
FAQ
What is the clamping voltage of MAPLAD36KP64A at its rated peak pulse current?
The MAPLAD36KP64A has a maximum clamping voltage (VC) of 103.0 V when subjected to its rated peak pulse current (IPP) of 350 A 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 circuitry during worst-case surge events.
Is MAPLAD36KP64A RoHS compliant?
Yes, MAPLAD36KP64A is RoHS compliant. Its part number suffix does not include "e3", but the device is manufactured with RoHS-compliant annealed matte-tin plating and void-free UL94V-0 epoxy body, as confirmed in the Mechanical and Packaging section of RF01216 Rev B. Non-RoHS versions are explicitly marked with blank suffix per nomenclature table.
Can MAPLAD36KP64A be used in bidirectional configurations?
No, MAPLAD36KP64A is unidirectional. The "A" suffix denotes unidirectional polarity; bidirectional variants carry the "CA" suffix (e.g., MAPLAD36KP64CA). The cathode is located on the metal base, and reverse-bias operation beyond VWM will cause conduction-making it unsuitable for AC or bipolar signal lines without external circuitry.
What thermal management is required for MAPLAD36KP64A in continuous multi-pulse operation?
For multi-pulse operation, MAPLAD36KP64A requires direct thermal coupling of its metal base to ≥250 mm² of 2 oz copper on inner or outer PCB layers, per the recommended pad layout in RF01216. Derating begins above TC = 100°C, with full power limited to TJ ≤ 150°C; junction temperature must be monitored using the RθJC = 1.0 °C/W path.
Does MAPLAD36KP64A meet AEC-Q101 qualification standards?
Yes, MAPLAD36KP64A is tested in accordance with AEC-Q101 requirements, as stated in the FEATURES section of RF01216 Rev B. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock-validating its suitability for automotive under-hood applications such as engine control units and ADAS power supplies.
MAPLAD36KP64A 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 350A
- 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
MAPLAD36KP64A FAQ
1.How can I place an order for MAPLAD36KP64A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP64A 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 MAPLAD36KP64A reliable?
The price and inventory of MAPLAD36KP64A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP64A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP64A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP64A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP64A?
MAPLAD36KP64A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP64A 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 MAPLAD36KP64A?
For technical support, including MAPLAD36KP64A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP64A requirements.
6.How does Aetrix verify that MAPLAD36KP64A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP64A 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 MAPLAD36KP64A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP64A?
All MAPLAD36KP64A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP64A, 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 MAPLAD36KP64A part is unused and in its original packaging.
Return procedure for MAPLAD36KP64A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP64A Tags
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