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Microchip Technology MAPLAD36KP45CA
- Part No.:
- MAPLAD36KP45CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP45CA.pdf
- Description:
- TVS DIODE 45VWM 72.7VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,923
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Product details
Overview
MAPLAD36KP45CA 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, features a 45 V reverse standoff voltage (VWM), clamps to ≤72.7 V at 496 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP45CA datasheet, MAPLAD36KP45CA pinout, MAPLAD36KP45CA application, or MAPLAD36KP45CA 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 protection per RTCA/DO-160F Waveforms 4 and 5A, and high-reliability ESD/EFT suppression in avionics power rails and vehicle ECUs.
Technical Context
This bidirectional TVS operates without polarity constraints on AC or differential signal lines and uses silicon avalanche diode technology with low thermal resistance (RθJC = 1.0 °C/W) to sustain repeated high-energy transients. Its clamping response time is under 5 ns, enabling effective suppression of fast-rising induced RFI and switching transients.
The device supports MIL-PRF-19500 upscreening options and is AEC-Q101 qualified, with 3σ lot norm screening on standby current (ID ≤ 10 μA at VWM). 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 surges without failure |
| Reverse Standoff Voltage (VWM) | 45 V - maximum continuous operating voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 50.0–55.3 V @ 5 mA - defines reliable avalanche initiation threshold |
| Max Clamping Voltage (VC) | 72.7 V @ 496 A IPP - limits downstream voltage stress during worst-case surge |
| Peak Pulse Current (IPP) | 496 A @ 10/1000 μs - quantifies surge current handling capacity |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables efficient heat transfer to heatsink or PCB copper |
| Standby Current (ID) | ≤10 μA @ 45 V - ensures negligible leakage in powered-off or low-power states |
Pinout & Package
MAPLAD36KP45CA uses a surface-mount PLAD package with metal base cathode (bidirectional symmetry eliminates anode/cathode distinction). The thermally optimized void-free epoxy body (UL94V-0) mounts directly to PCB copper for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode-side pad) | Surge input/output node | Bidirectional conduction path - connects to protected line (e.g., 28 V DC bus or AC sensor line) |
| Terminal 2 (Cathode-side pad / metal base) | Surge return path / thermal interface | Low-inductance ground reference and primary heat sink interface; must be soldered to ≥1 in² copper pour |
Key Features
| Feature | Design Value |
|---|---|
| RTCA DO-160F Waveform 4 compliance | Level 4 protection (6.4/69 μs) up to 45 V VWM - validated for avionics pin-injection immunity |
| IEC 61000-4-5 secondary lightning protection | Class 1–5 certified with 42 Ω, 12 Ω, and 2 Ω source impedances - covers aircraft and automotive test profiles |
| AEC-Q101 qualification | Qualified for automotive electronic control units - includes temperature cycling, HTRB, and surge testing |
| MIL-PRF-19500 upscreening option | Available with screening levels M, MA, MX, MXL - supports space-grade reliability requirements |
| RoHS-compliant (e3 marking) | Tin-plated terminals meeting JEDEC J-STD-020B Level 1 - no moisture bake required pre-reflow |
Applications
| Aerospace Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC main bus against lightning-induced transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed at bus entry point to limit voltage excursion during multi-stroke events. Use Value: Enables compliance with Level 4 pin injection (Waveform 4) and Class 5 lightning (42 Ω source) without derating or parallel devices. |
Use Scenario: Guarding microcontroller I/O and CAN transceiver power rails against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: High-energy transient shunt located between battery feed and local regulator input. Use Value: Withstands 36 kW surges while maintaining clamping below 73 V - prevents overvoltage damage to 5 V/3.3 V logic supplies. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Safeguarding DC link monitoring circuits in variable-frequency drives exposed to IGBT switching noise and grid faults. IC Role / Device Role / Timing Role: Fast-response (≤5 ns) bidirectional clamp across isolated analog sensing inputs. Use Value: Low clamping voltage (72.7 V) and high IPP (496 A) prevent false triggering and sensor saturation during 10/1000 μs transients. |
Use Scenario: Protecting 75 Ω balanced signaling lines in ETSI EN 50121-4 compliant railway trackside equipment. IC Role / Device Role / Timing Role: Differential-mode TVS pair bridging signal pair to chassis ground. Use Value: Bidirectional symmetry ensures identical clamping on both polarities - critical for AC-coupled rail comms with ±45 V common-mode range. |
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 SMAJ45CA | Lower PPP (400 W), smaller SMA package, higher RθJA (65 °C/W), unidirectional/bidirectional variants available | Suitable for consumer/industrial low-energy surges; not rated for RTCA DO-160 or IEC 61000-4-5 Class 4/5 | Select when cost and board space constrain design and surge energy remains below 500 W. |
| Vishay V26MLA10H | Multi-layer varistor (MLV), 26 V nominal, 10 kA 8/20 μs rating, no specified 10/1000 μs PPP, higher capacitance (~300 pF) | Better for high-frequency ESD/EFT but lacks verified lightning waveform performance; unsuitable for DO-160F Waveform 4/5A | Choose only for sub-1 kV ESD and fast EFT where low clamping voltage (<20 V) outweighs energy-handling needs. |
Compared with MAPLAD36KP45CA, SMAJ45CA offers compact size but cannot support aircraft lightning standards, while V26MLA10H provides lower clamping voltage yet lacks documented 36 kW surge capability and RTCA/IEC certification - MAPLAD36KP45CA remains the only option qualified for multi-stroke DO-160 Section 22 and Class 5 IEC 61000-4-5 with 42 Ω source impedance.
Availability
MAPLAD36KP45CA is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, industrial motor drive monitoring, and railway signaling interface applications requiring stable component supply, long-term lifecycle assurance, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP45CA 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 semiconductor solutions for aerospace, defense, and industrial markets, with expertise in radiation-hardened ICs, timing devices, and transient protection.
The MAPLAD36KP45CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning immunity and mission-critical surge suppression in avionics and automotive safety systems.
FAQ
What is the clamping voltage of MAPLAD36KP45CA at its rated peak pulse current?
The MAPLAD36KP45CA has a maximum clamping voltage (VC) of 72.7 V at its rated peak pulse current (IPP) of 496 A under 10/1000 μs waveform conditions. This value is measured per standard test methods and guarantees that downstream circuitry will not experience voltage stress beyond this threshold during defined surge events. The clamping performance is validated across temperature and production lots.
Is MAPLAD36KP45CA suitable for RTCA DO-160F Section 22 lightning testing?
Yes, MAPLAD36KP45CA is explicitly rated for RTCA DO-160F Section 22 multi-stroke lightning testing. It achieves Level 4 pin injection protection for Waveform 4 (6.4/69 μs) and Level 4 for Waveform 5A (40/120 μs) at 45 V VWM. Documentation confirms compliance across all required stroke counts and repetition rates when mounted per recommended pad layout.
Does MAPLAD36KP45CA require moisture baking before reflow soldering?
No, MAPLAD36KP45CA has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions and does not require dry pack or baking prior to reflow. This simplifies manufacturing logistics and eliminates risk of popcorning during assembly.
What is the thermal resistance from junction to case (RθJC) for MAPLAD36KP45CA?
The junction-to-case thermal resistance (RθJC) of MAPLAD36KP45CA is 1.0 °C/W, measured under standardized conditions with case temperature controlled on a heatsink. This low value enables efficient heat transfer to PCB copper or external heatsinks, supporting sustained operation under repetitive surge duty cycles with ≤0.05% impulse repetition rate.
How does the bidirectional construction of MAPLAD36KP45CA affect its use in AC-coupled circuits?
The bidirectional construction of MAPLAD36KP45CA allows symmetrical clamping on both positive and negative voltage excursions, making it ideal for AC signal lines, differential buses, and transformer-coupled interfaces. Unlike unidirectional TVS diodes, it requires no polarity alignment during placement and maintains identical VC and V(BR) characteristics across both polarities - critical for balanced railway or telecom signaling.
MAPLAD36KP45CA 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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 496A
- 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
MAPLAD36KP45CA FAQ
1.How can I place an order for MAPLAD36KP45CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP45CA 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 MAPLAD36KP45CA reliable?
The price and inventory of MAPLAD36KP45CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP45CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP45CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP45CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP45CA?
MAPLAD36KP45CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP45CA 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 MAPLAD36KP45CA?
For technical support, including MAPLAD36KP45CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP45CA requirements.
6.How does Aetrix verify that MAPLAD36KP45CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP45CA 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 MAPLAD36KP45CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP45CA?
All MAPLAD36KP45CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP45CA, 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 MAPLAD36KP45CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP45CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP45CA Tags
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