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Microchip Technology MAPLAD36KP22CAE3
- Part No.:
- MAPLAD36KP22CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP22CAE3.pdf
- Description:
- TVS DIODE 22VWM 36.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,695
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Product details
Overview
MAPLAD36KP22CAE3 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 kW peak pulse power at 10/1000 μs, features a 22 V reverse standoff voltage (VWM), clamps to ≤36.4 V at 990 A peak pulse current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP22CAE3 datasheet, MAPLAD36KP22CAE3 pinout, MAPLAD36KP22CAE3 application, or MAPLAD36KP22CAE3 equivalent, key selection criteria include its bidirectional polarity, 22 V standoff rating, low thermal resistance (RθJC = 1.0 °C/W), RoHS-compliant e3 termination, and qualification per AEC-Q101 and MIL-PRF-19500 screening options.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold (24.4–26.9 V). Its void-free UL94V-0 epoxy package and metal-base cathode construction enable efficient heat dissipation during high-current surges up to 990 A.
It supports secondary lightning protection per IEC 61000-4-5 with 2 Ω, 12 Ω, and 42 Ω source impedances across Classes 1–5, and provides pin-injection immunity per RTCA/DO-160F Waveforms 4 and 5A - specifically rated Level 4 (≤300 V) and Level 5 (≤220 V) for 22 V standoff variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning transients without failure |
| Reverse Standoff Voltage (VWM) | 22 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 24.4–26.9 V @ 5 mA - precise turn-on threshold ensures reliable overvoltage detection |
| Max Clamping Voltage (VC) | 36.4 V @ 990 A - limits downstream voltage stress during worst-case surge events |
| Peak Pulse Current (IPP) | 990 A @ 10/1000 μs - defines maximum surge energy absorption capability |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to heatsink for sustained multi-pulse operation |
| Standby Current (ID) | 10 μA @ 22 V - negligible leakage preserves system efficiency in standby mode |
Pinout & Package
MAPLAD36KP22CAE3 uses a surface-mount PLAD package with metal base cathode (pin 1 = cathode, pin 2 = anode). The low-profile thermoset epoxy body (12.32 × 10.54 × 5.08 mm) features tin-plated terminations compliant with MIL-STD-750 Method 2026 and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Metal Base) | Current Sink / Ground Reference | Primary heat path to PCB/heatsink; must be soldered to thermal pad per recommended layout |
| Anode (Top Terminal) | Transient Input / Line Connection | Connected to protected line (e.g., avionics bus, battery feed); carries full surge current to cathode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating lines against both positive and negative transients without polarity constraints |
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| RTCA DO-160F compliance | Meets Level 4/5 pin injection (Waveform 4 & 5A) and Section 22 multi-stroke lightning for certified aircraft systems |
| MIL-PRF-19500 upscreening option | Enables high-reliability screening (M, MA, MX, MXL levels) for mission-critical defense/aerospace deployments |
| e3 RoHS termination | Matte-tin plating ensures lead-free solder compatibility and long-term intermetallic stability |
Applications
| Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against induced lightning currents and switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus rails to clamp surges before they reach flight control modules or communication interfaces. Use Value: Enables compliance with RTCA DO-160 Section 22 multi-stroke testing while maintaining <36.4 V clamping to safeguard 3.3 V/5 V logic supplies downstream. | Use Scenario: Safeguarding engine control units (ECUs) during alternator load dump events in 12 V automotive systems. IC Role / Device Role / Timing Role: Parallel-connected surge absorber on battery input line that activates within nanoseconds to limit voltage overshoot. Use Value: Withstands 36 kW pulses and clamps to 36.4 V, preventing damage to ISO 16750-2 Class D-rated microcontrollers and CAN transceivers. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Shielding IGBT gate drivers and feedback sensors from commutation-induced transients in 400 V DC motor drives. IC Role / Device Role / Timing Role: High-power TVS mounted directly at DC link terminals to absorb regenerative energy spikes and inductive kickback. Use Value: 1.0 °C/W RθJC allows direct thermal coupling to chassis ground, enabling repeated 990 A surges without thermal runaway. | Use Scenario: Securing 72 V signaling lines in railway signaling cabinets against EFT bursts and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional protector on track-side Ethernet or RS-485 interfaces exposed to outdoor electromagnetic environments. Use Value: Meets IEC 61000-4-5 Class 4 (2 Ω source) and ESD/EFT immunity per IEC 61000-4-2/-4, ensuring >100,000-cycle field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | 600 W PPP rating, 22 V VWM, SMB package, RθJC ≈ 35 °C/W | Limited to single-stroke surges; unsuitable for RTCA DO-160 multi-stroke or IEC 61000-4-5 Class 4/5 | Select only for cost-sensitive industrial controls with sub-100 A surge exposure |
| SMCJ22CA | 1500 W PPP rating, same VWM, SMC package, RθJC ≈ 12 °C/W | Cannot sustain 990 A IPP or meet DO-160F Waveform 5A Level 5 requirements | Acceptable for automotive infotainment where AEC-Q101 is required but lightning immunity is not mandated |
Compared with SMBJ22CA and SMCJ22CA, MAPLAD36KP22CAE3 delivers 24× and 24× higher peak pulse power respectively, with superior thermal management and certification coverage for aerospace-grade surge immunity - making it the sole choice for DO-160F Section 22 and IEC 61000-4-5 Class 4/5 deployments.
Availability
MAPLAD36KP22CAE3 is available at Aetrix Electronics and suitable for avionics power conditioning, automotive ECU protection, and industrial motor drive DC link surge suppression requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP22CAE3 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 emphasis on radiation-hardened ICs, timing devices, and power protection components.
MAPLAD36KP22CAE3 belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for multi-stroke lightning protection in certified aircraft and harsh-environment vehicle electronics.
FAQ
What is the clamping voltage of MAPLAD36KP22CAE3 at its rated peak pulse current?
The MAPLAD36KP22CAE3 exhibits a maximum clamping voltage (VC) of 36.4 V when subjected to its rated peak pulse current of 990 A under 10/1000 μs waveform conditions. This value is guaranteed per the manufacturer's electrical characteristics table and ensures downstream circuitry remains within safe operating voltage limits during surge events. The MAPLAD36KP22CAE3 achieves this performance through optimized silicon geometry and low-inductance metal-base packaging.
Is MAPLAD36KP22CAE3 qualified for automotive applications?
Yes, MAPLAD36KP22CAE3 is AEC-Q101 qualified, confirming its suitability for automotive under-hood and powertrain applications. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-current surge endurance. The MAPLAD36KP22CAE3 is commonly deployed in engine control units and battery management systems where load dump protection is critical, and its 22 V standoff aligns with standard 12 V vehicle electrical architectures.
Does MAPLAD36KP22CAE3 meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP22CAE3 is explicitly rated for RTCA DO-160F Section 22 multi-stroke lightning testing and pin injection per Waveforms 4 and 5A. For Waveform 4 (6.4/69 μs), it achieves Level 4 up to 300 V and Level 5 up to 220 V. Its 36 kW pulse rating and low thermal resistance ensure consistent performance across repeated strokes - a requirement not met by lower-power TVS alternatives. The MAPLAD36KP22CAE3 data sheet confirms these ratings in Table 1 and Figure 1.
What is the thermal resistance specification for MAPLAD36KP22CAE3?
The MAPLAD36KP22CAE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with the case temperature controlled on a heatsink as specified in the datasheet. This ultra-low value results from its metal-base construction and direct thermal path to the PCB copper pour or external heatsink. Engineers must follow the recommended pad layout (0.470″ × 0.230″ thermal pad) to achieve this rating; inadequate copper area will degrade thermal performance and reduce surge endurance. The MAPLAD36KP22CAE3 relies on this thermal path for multi-pulse reliability.
How does the CA suffix in MAPLAD36KP22CAE3 indicate device polarity?
The "CA" suffix in MAPLAD36KP22CAE3 denotes bidirectional construction - meaning the device provides symmetrical clamping for both positive and negative transients. Unlike unidirectional variants (e.g., MAPLAD36KP22AE3), the CA version has no designated anode/cathode polarity and functions identically regardless of voltage polarity applied across its terminals. The MAPLAD36KP22CAE3 achieves this via back-to-back diode configuration inside the PLAD package, enabling use in AC-coupled or floating signal paths without orientation concerns.
MAPLAD36KP22CAE3 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 36.4V
- Current - Peak Pulse (10/1000µs):
- 990A
- 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
MAPLAD36KP22CAE3 FAQ
1.How can I place an order for MAPLAD36KP22CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP22CAE3 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 MAPLAD36KP22CAE3 reliable?
The price and inventory of MAPLAD36KP22CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP22CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP22CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP22CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP22CAE3?
MAPLAD36KP22CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP22CAE3 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 MAPLAD36KP22CAE3?
For technical support, including MAPLAD36KP22CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP22CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP22CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP22CAE3 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 MAPLAD36KP22CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP22CAE3?
All MAPLAD36KP22CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP22CAE3, 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 MAPLAD36KP22CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP22CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP22CAE3 Tags
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