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Microchip Technology MAPLAD36KP20CA
- Part No.:
- MAPLAD36KP20CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP20CA.pdf
- Description:
- TVS DIODE 20VWM 34VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,935
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Product details
Overview
MAPLAD36KP20CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤34.0 V at 1059 A, and features a 20 V reverse standoff voltage (VWM), 22.2–24.5 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP20CA datasheet, MAPLAD36KP20CA pinout, MAPLAD36KP20CA application, or MAPLAD36KP20CA 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, and multi-stroke lightning compliance in aircraft avionics and vehicle power systems.
Technical Context
This TVS diode uses silicon avalanche technology with a void-free UL94V-0 epoxy package and metal-base cathode construction. Its bidirectional symmetry enables symmetric clamping for AC-coupled or floating signal/power lines, and its low RθJC (1.0 °C/W) supports high-repetition surges when mounted on thermally optimized PCB pads per recommended layout.
It meets AEC-Q101 stress testing and MIL-PRF-19500 upscreening options (M, MA, MX, MXL levels). Standby current ID is ≤45 μA at 20 V, and temperature coefficient αV(BR) is +18 mV/°C - enabling predictable derating across –55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning-level energy without failure |
| Reverse Standoff Voltage (VWM) | 20 V - maximum continuous DC or peak AC voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 22.2–24.5 V @ 5 mA - defines onset of avalanche conduction under controlled test conditions |
| Clamping Voltage (VC) | 34.0 V @ 1059 A - maximum voltage seen by protected circuit during full-rated surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour, critical for repetitive surge duty |
| Standby Current (ID) | ≤45 μA @ 20 V - ensures negligible leakage in standby, preserving system power integrity |
| Temperature Coefficient (αV(BR)) | +18 mV/°C - allows accurate clamping voltage prediction across full –55°C to +150°C range |
Pinout & Package
MAPLAD36KP20CA uses a PLAD surface-mount package with two terminals: anode and cathode. The metal base serves as the cathode for unidirectional variants; in bidirectional construction (CA suffix), both terminals are symmetrical and non-polarized. Package dimensions: 12.32 × 10.54 × 3.68 mm (L × W × H), with 5.08 mm terminal pitch and UL94V-0 epoxy body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode (bidirectional) | One side of symmetrical avalanche junction; connects to line or signal being protected |
| Terminal 2 | Cathode (bidirectional) | Other side of symmetrical avalanche junction; connects to ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled buses, differential pairs, or floating supplies without polarity constraints |
| 36 kW surge rating @ 10/1000 μs | Meets RTCA DO-160 Section 22 multi-stroke lightning requirements for commercial aircraft |
| 1.0 °C/W RθJC | Supports >0.05% duty cycle surge repetition when mounted on ≥10 cm² 2-oz copper pad per datasheet layout |
| AEC-Q101 qualified | Validated for automotive load dump and ISO 7637-2 transient immunity in engine control and powertrain modules |
| IEC 61000-4-5 Class 5 compliance (42 Ω, short distance) | Provides secondary lightning protection for industrial PLC I/O modules and telecom power interfaces |
Applications
| Aircraft Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Protection of 28 V DC power input to flight management computers against lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on main power rail, placed upstream of DC/DC converters and LDOs. Use Value: Clamps 36 kW surges to ≤34.0 V, preventing latch-up or burnout in downstream regulators rated for <40 V absolute max. |
Use Scenario: Load dump suppression on 12 V battery-fed ECU power supply during alternator disconnection events. IC Role / Device Role / Timing Role: High-power TVS placed at connector entry point to absorb ISO 7637-2 Pulse 5a/b energy. Use Value: Limits voltage to 34.0 V during 1059 A peak surge, protecting 36 V-rated microcontrollers and CAN transceivers. |
| Industrial PLC Analog Input Module | Telecom Remote Radio Unit (RRU) Power Interface |
|
Use Scenario: Secondary protection for 24 V analog sensor inputs exposed to induced surges in factory automation environments. IC Role / Device Role / Timing Role: Bidirectional clamp across differential pair or single-ended signal line referenced to chassis ground. Use Value: Symmetric clamping prevents signal inversion or offset shift during fast transients, preserving 16-bit ADC accuracy. |
Use Scenario: Surge protection on 48 V DC power feed to outdoor RRUs subjected to lightning coupling via tower cabling. IC Role / Device Role / Timing Role: Front-end TVS on PoE-derived or rectified AC power input, before DC/DC isolation stage. Use Value: Withstands repeated 42 Ω IEC 61000-4-5 Class 5 surges up to 36 kW, extending field reliability beyond 10 years. |
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 SP3052-02UTG | Lower PPP (3 kW), SOD-323 package, 20 V VWM, bidirectional | Suitable only for low-energy ESD/EFT (IEC 61000-4-2/4), not lightning or load dump | Select MAPLAD36KP20CA when surge energy exceeds 3 kW or IEC 61000-4-5/RTCA DO-160 compliance is required. |
| Vishay SMAJ20CA | Same VWM (20 V), bidirectional, but PPP = 400 W, DO-214AC package | Rated for basic board-level ESD and switching transients, not multi-stroke lightning | Choose MAPLAD36KP20CA for aerospace-grade multi-stroke capability and 90× higher PPP than SMAJ20CA. |
Compared with SP3052-02UTG and SMAJ20CA, MAPLAD36KP20CA provides 9–90× higher peak pulse power, validated multi-stroke endurance, and AEC-Q101/MIL-PRF-19500 screening options - making it the only choice for certified lightning protection in safety-critical platforms.
Availability
MAPLAD36KP20CA is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain, industrial PLC, and telecom infrastructure applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP20CA 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP20CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load dump protection in mission-critical electronic systems where failure is not an option.
FAQ
What is the clamping voltage of MAPLAD36KP20CA at its rated peak pulse current?
The MAPLAD36KP20CA has a maximum clamping voltage (VC) of 34.0 V at its rated peak pulse current of 1059 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and ensures protected circuits remain below critical overvoltage thresholds during full-rated surge events. The MAPLAD36KP20CA maintains this clamping performance across its specified operating temperature range.
Is MAPLAD36KP20CA suitable for RTCA DO-160F Section 22 lightning testing?
Yes, MAPLAD36KP20CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 protection. Its 36 kW rating and low clamping voltage enable compliance when mounted per recommended pad layout. The MAPLAD36KP20CA data sheet cites direct qualification for these waveforms in Rev B documentation.
Does MAPLAD36KP20CA require a heatsink for standard operation?
No external heatsink is required for single-event surge operation, as the MAPLAD36KP20CA relies on PCB copper area for thermal dissipation. However, for repetitive surges (>0.05% duty cycle), mounting on ≥10 cm² of 2-oz copper per the datasheet pad layout is mandatory to maintain junction temperature within –55°C to +150°C limits. The MAPLAD36KP20CA's 1.0 °C/W RθJC enables this passive thermal design.
What is the polarity configuration of MAPLAD36KP20CA?
MAPLAD36KP20CA is a bidirectional TVS diode, indicated by the "CA" suffix. Unlike unidirectional variants (e.g., MAPLAD36KP20A), it has no designated anode or cathode and provides symmetrical clamping for both positive and negative transients. This makes the MAPLAD36KP20CA ideal for AC lines, differential signals, or floating grounds where polarity cannot be assumed.
How does MAPLAD36KP20CA compare to standard SMAJ-series TVS diodes in surge handling?
MAPLAD36KP20CA delivers 36,000 W peak pulse power - 90× higher than the 400 W rating of SMAJ20CA - and is built for multi-stroke lightning standards like RTCA DO-160 and IEC 61000-4-5 Class 5. While SMAJ20CA suits basic ESD protection, the MAPLAD36KP20CA is engineered for sustained high-energy threats. Its robust PLAD package and 1.0 °C/W thermal resistance make the MAPLAD36KP20CA uniquely capable in aerospace and heavy industrial applications.
MAPLAD36KP20CA 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 34V
- Current - Peak Pulse (10/1000µs):
- 1059A (1.059kA)
- 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
MAPLAD36KP20CA FAQ
1.How can I place an order for MAPLAD36KP20CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP20CA 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 MAPLAD36KP20CA reliable?
The price and inventory of MAPLAD36KP20CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP20CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP20CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP20CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP20CA?
MAPLAD36KP20CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP20CA 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 MAPLAD36KP20CA?
For technical support, including MAPLAD36KP20CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP20CA requirements.
6.How does Aetrix verify that MAPLAD36KP20CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP20CA 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 MAPLAD36KP20CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP20CA?
All MAPLAD36KP20CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP20CA, 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 MAPLAD36KP20CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP20CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP20CA Tags
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