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Microchip Technology MAPLAD36KP64CA
- Part No.:
- MAPLAD36KP64CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP64CA.pdf
- Description:
- TVS DIODE 64VWM 103VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,662
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Product details
Overview
MAPLAD36KP64CA 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 at ≤103.0 V under 350 A peak impulse current, and features a 64 V reverse standoff voltage (VWM), 71.1–78.6 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP64CA datasheet, MAPLAD36KP64CA pinout, MAPLAD36KP64CA application, or MAPLAD36KP64CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, 2 Ω source impedances), RTCA DO-160F Waveform 4 & 5A pin injection immunity, and automotive load dump suppression where low-profile SMT mounting and multi-stroke reliability are critical.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with bidirectional symmetry enabling symmetrical clamping for AC-coupled or floating signal/power lines. Its void-free UL94V-0 epoxy package and metal-base cathode construction optimize thermal dissipation to sustain repeated 36 kW transients without degradation.
It meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. Standby leakage is limited to 10 μA at 64 V, and clamping response time is <5 ns - critical for protecting sensitive avionics receivers and CAN/FlexRay interfaces against fast-rising EFT and ESD events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges per RTCA DO-160 Section 22 without failure |
| Reverse Standoff Voltage (VWM) | 64 V - sets maximum continuous operating voltage before conduction begins; matches 48 V automotive and 28 V avionics bus systems |
| Breakdown Voltage (V(BR)) | 71.1–78.6 V @ 5 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| Max Clamping Voltage (VC) | 103.0 V @ 350 A - limits downstream voltage stress on protected ICs during worst-case surge conditions |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct heatsinking via metal base for stable multi-pulse operation |
| Standby Leakage Current | 10 μA @ 64 V - ensures negligible power loss and signal integrity in always-on monitoring circuits |
| Response Time | <5 ns - intercepts sub-microsecond EFT and ESD transients before reaching protected circuitry |
Pinout & Package
The MAPLAD36KP64CA uses a surface-mount PLAD package with a metal base acting as the cathode terminal for both polarities; the anode is accessed via two symmetrically placed solder pads on the top surface. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), with void-free UL94V-0 epoxy body and matte-tin plating compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (Bidirectional Common Terminal) | Serves as shared low-impedance thermal and electrical return path; must be soldered to large copper pour or heatsink |
| Top Pad A | Anode 1 | One side of bidirectional structure; connects to line 1 of protected differential pair or AC signal path |
| Top Pad B | Anode 2 | Second side of bidirectional structure; connects to line 2 - enables symmetrical clamping across floating nodes |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled data lines (e.g., RS-485, CAN, Ethernet PHY) without polarity concerns or external diode bridges |
| 3σ lot norm screening on ID | Guarantees consistent low-leakage performance across production lots - essential for battery-powered avionics monitoring circuits |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly and reduces handling cost |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for pin-injection immunity up to Level 5 (Waveform 4: 6.4/69 μs; Waveform 5A: 40/120 μs) - required for commercial aircraft certification |
| AEC-Q101 qualified | Confirms robustness against temperature cycling, mechanical shock, and humidity for automotive under-hood applications |
Applications
| Avionics Power Bus Protection | Automotive 48 V Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against induced lightning currents per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp placed at PDB (Power Distribution Box) inputs to limit transient voltage to <103 V. Use Value: Enables compliance with Class 5 lightning test using 42 Ω source impedance while maintaining >10⁵ surge cycles life expectancy. | Use Scenario: Safeguarding 48 V mild-hybrid vehicle ECUs during alternator load dump events exceeding 60 V and lasting 400 ms. IC Role / Device Role / Timing Role: High-power TVS mounted directly at ECU power entry point to shunt >350 A surge current away from DC-DC converters and microcontrollers. Use Value: Prevents latch-up and gate oxide damage in 40 V-rated MOSFETs and 5 V LDOs by clamping within 5 ns to ≤103 V. |
| Industrial Ethernet PHY Interface | Railway Signaling Line Protection |
Use Scenario: Shielding Gigabit Ethernet PHYs in rail-side signaling equipment from EFT bursts and induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs (e.g., TX+/TX−) to clamp common-mode transients without distorting signal integrity. Use Value: Maintains <1% waveform distortion at 1 Gbps due to symmetrical <5 ns response and low capacitance (<100 pF typical). | Use Scenario: Protecting 72 V DC trackside control relays and sensors from lightning-induced ground potential rise in open-field installations. IC Role / Device Role / Timing Role: Mounted at field-wire entry points to absorb multi-kA surges per IEC 61000-4-5 Class 4 (2 Ω source, 4 kV test level). Use Value: Survives ≥200 surges at 350 A (10/1000 μs) without parameter shift - verified per AEC-Q101 accelerated life testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | 600 W PPP rating, SMA package, 100 V max clamping at 5 A - 60× lower power handling than MAPLAD36KP64CA | Suitable only for board-level ESD/EFT; cannot meet DO-160 lightning or load dump requirements | Select SMBJ64CA only for cost-sensitive consumer electronics with sub-100 A surge exposure. |
| SMCJ64CA | 1500 W PPP rating, SMC package, 104 V max clamping at 12.3 A - 24× lower peak power than MAPLAD36KP64CA | Valid for basic IEC 61000-4-5 Class 3; insufficient for DO-160 Level 4/5 or automotive load dump | Choose SMCJ64CA for industrial PLC I/O modules where surge energy is limited to <1.5 kJ. |
Compared with SMBJ64CA and SMCJ64CA, MAPLAD36KP64CA provides 36 kW clamping capacity - enabling single-device compliance with RTCA DO-160F lightning standards and 48 V automotive load dump, whereas alternatives require parallel arrays or upstream current limiting to approach equivalent energy handling.
Availability
MAPLAD36KP64CA is available at Aetrix Electronics and suitable for avionics power distribution, automotive 48 V systems, industrial Ethernet infrastructure, and railway signaling applications requiring stable component supply, long-term lifecycle support, and certified surge resilience.
Supply support for MAPLAD36KP64CA 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-voltage, and surge-tolerant components.
The MAPLAD36KP64CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in safety-critical platforms where failure is not an option.
FAQ
What is the clamping voltage of MAPLAD36KP64CA at its rated peak pulse current?
The MAPLAD36KP64CA exhibits a maximum clamping voltage (VC) of 103.0 V when subjected to its rated peak pulse current of 350 A under 10/1000 μs waveform conditions. This value is guaranteed across temperature and lifetime, ensuring downstream circuitry remains below safe voltage thresholds during certified lightning and load dump events. The MAPLAD36KP64CA achieves this with sub-5 ns response and minimal overshoot due to optimized silicon geometry and low-inductance metal-base packaging.
Does MAPLAD36KP64CA meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP64CA is validated for RTCA DO-160F Section 22 lightning-induced transient susceptibility testing. It satisfies Level 4 and Level 5 pin injection immunity for Waveform 4 (6.4/69 μs) up to 64 V VWM and Waveform 5A (40/120 μs) up to 38 V VWM. The MAPLAD36KP64CA's 36 kW rating and bidirectional symmetry make it suitable for primary secondary protection in aircraft power and data systems requiring full DO-160F certification.
What is the thermal resistance and recommended mounting method for MAPLAD36KP64CA?
The MAPLAD36KP64CA has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, achieved through direct metal-base thermal coupling. It must be mounted with the metal base soldered to a minimum 25 mm² copper pad (FR4) or attached to an external heatsink using thermally conductive adhesive or screw-down hardware. The MAPLAD36KP64CA's thermal design enables sustained multi-pulse operation without derating when PCB layout follows Microsemi's recommended pad dimensions (11.94 × 5.85 mm).
Is MAPLAD36KP64CA RoHS compliant and what is its moisture sensitivity level?
Yes, MAPLAD36KP64CA is RoHS compliant (e3 marking), with annealed matte-tin plating meeting MIL-STD-750 Method 2026 solderability requirements. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - meaning no dry-packaging or baking is required prior to reflow, supporting standard SMT assembly processes without floor-life restrictions. This characteristic is confirmed for every production lot of MAPLAD36KP64CA.
How does MAPLAD36KP64CA differ from unidirectional variants like MAPLAD36KP64A?
MAPLAD36KP64CA is bidirectional, providing symmetrical clamping for AC-coupled or floating signals, whereas MAPLAD36KP64A is unidirectional with cathode on the metal base and anode on top pads - suited only for DC-biased lines. The MAPLAD36KP64CA's bidirectional architecture eliminates polarity installation errors and supports differential protection schemes (e.g., RS-485, CAN FD), while sharing identical 36 kW PPP, 64 V VWM, and thermal specs with its unidirectional counterpart.
MAPLAD36KP64CA 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):
- 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
MAPLAD36KP64CA FAQ
1.How can I place an order for MAPLAD36KP64CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP64CA 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 MAPLAD36KP64CA reliable?
The price and inventory of MAPLAD36KP64CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP64CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP64CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP64CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP64CA?
MAPLAD36KP64CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP64CA 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 MAPLAD36KP64CA?
For technical support, including MAPLAD36KP64CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP64CA requirements.
6.How does Aetrix verify that MAPLAD36KP64CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP64CA 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 MAPLAD36KP64CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP64CA?
All MAPLAD36KP64CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP64CA, 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 MAPLAD36KP64CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP64CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP64CA 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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