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Microchip Technology MAPLAD36KP260A
- Part No.:
- MAPLAD36KP260A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP260A.pdf
- Description:
- TVS DIODE 260VWM 419VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
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Product details
Overview
MAPLAD36KP260A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps transients to ≤419 V at 10 A IPP, and features a 260 V reverse standoff voltage (VWM), 289–320 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP260A datasheet, MAPLAD36KP260A pinout, MAPLAD36KP260A application, or MAPLAD36KP260A equivalent, key selection criteria include its 260 V VWM rating, bidirectional-compatible unidirectional polarity, low-profile PLAD package with metal-base cathode, and compliance with IEC 61000-4-5 (Class 3, 2 Ω source) and RTCA/DO-160F Waveform 4 Level 4.
Technical Context
The MAPLAD36KP260A operates as a silicon avalanche diode-based TVS, leveraging controlled avalanche breakdown to clamp fast-rising transients. Its unidirectional construction enables asymmetric protection with cathode on the metal base, optimized for DC-biased lines such as aircraft avionics power rails and automotive battery feeds.
It is characterized by a low 1.0 °C/W RθJC, enabling effective heat transfer to an external heatsink or PCB copper plane, and exhibits <100 ps response time from 0 V to V(BR) min. The device supports steady-state dissipation up to 2.5 W at 25°C ambient and is rated for junction temperatures from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 260 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) @ I(BR) | 289–320 V - Minimum breakdown voltage at 5 mA, defining reliable turn-on threshold under surge. |
| VC @ IPP | 419 V - Maximum clamping voltage at 10 A peak pulse current, limiting protected circuit stress. |
| PPP @ 10/1000 μs | 36,000 W - Peak transient energy handling capacity, validated per Figure 1 waveform. |
| RθJC | 1.0 °C/W - Enables direct thermal coupling to heatsink; critical for multi-pulse reliability in lightning testing. |
| ID @ VWM | 10 μA - Ultra-low leakage ensures minimal power loss in standby operation of sensitive systems. |
| TJ Range | –55°C to +150°C - Supports operation in extended-temperature environments including engine bays and flight control bays. |
Pinout & Package
MAPLAD36KP260A uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), tin-lead or RoHS-compliant matte-tin terminals, and cathode marked on the metal base underside. Polarity is unidirectional with cathode on the bottom metal surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Transient current entry point during positive surges | Connected to line being protected; forms avalanche path to cathode when V > V(BR). |
| Cathode (metal base) | Transient current return path and thermal interface | Must be soldered to large copper pour or heatsink for RθJC = 1.0 °C/W performance; defines polarity orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Aerospace-grade surge rating | Validated to RTCA DO-160F Section 22 multi-stroke lightning (Waveform 4 Level 4, 6.4/69 μs) at full 36 kW rating. |
| Thermal-optimized package | 1.0 °C/W RθJC enables >100 pulses at 0.05% duty cycle without thermal runaway when mounted per recommended pad layout. |
| Automotive qualification | AEC-Q101 qualified - certified for use in automotive powertrain and chassis modules requiring robust ESD/EFT immunity. |
| IEC 61000-4-5 compliance | Class 3 secondary lightning protection with 2 Ω source impedance - suitable for 24 V/28 V DC distribution systems. |
| Low moisture sensitivity | IPC/JEDEC J-STD-020B Level 1 - no dry pack required, simplifying SMT assembly and inventory management. |
Applications
| Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC power distribution in commercial aircraft flight control computers from induced lightning transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed at power input stage to clamp DO-160F Waveform 4 surges before they reach downstream DC/DC converters. Use Value: Limits clamped voltage to ≤419 V while absorbing 36 kW pulses, preserving integrity of 40 V-rated input capacitors and MOSFETs. | Use Scenario: Safeguarding engine control unit (ECU) power inputs against 12 V battery load dump events per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary surge suppression element across battery rail, triggered within <100 ps to prevent overvoltage damage to microcontrollers. Use Value: Withstands 10 A peak impulse current at 260 V standoff, enabling single-device protection without series impedance or derating. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Shielding 220–260 V DC link inputs in variable-frequency drives from switching-induced transients and capacitor bank switching spikes. IC Role / Device Role / Timing Role: High-power TVS connected between DC+ and chassis ground to absorb repetitive 10/1000 μs surges generated by IGBT commutation. Use Value: 36,000 W PPP rating and 1.0 °C/W RθJC allow sustained operation under 0.05% duty cycle, eliminating need for active cooling. | Use Scenario: Protecting 24 V signaling lines in European railway interlocking systems from EFT bursts and indirect lightning coupling per EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS deployed on isolated RS-485 data lines to suppress common-mode surges without distorting signal integrity. Use Value: 10 μA ID at 260 V ensures negligible loading on 120 Ω differential bus, maintaining signal eye diagram compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ260A | 600 W PPP rating, SMB package, RθJA = 40 °C/W, no AEC-Q101 or DO-160 qualification | Limited to low-energy consumer/industrial I/O protection; insufficient for multi-stroke lightning or automotive load dump | Select only for cost-sensitive, non-safety-critical 260 V DC lines with <1 kW surge exposure. |
| SMCJ260A | 1500 W PPP rating, SMC package, RθJA = 15 °C/W, AEC-Q101 qualified but not DO-160 tested | Suitable for single-event automotive transients (ISO 7637-2), but fails RTCA DO-160F Section 22 multi-pulse validation | Acceptable for Tier 2 automotive modules where lightning testing is not mandated, but requires thermal derating above 85°C ambient. |
Compared with SMBJ260A and SMCJ260A, MAPLAD36KP260A provides 24× and 24× higher peak pulse power respectively, validated thermal performance for repeated surges, and full aerospace qualification-making it the sole option for DO-160F-compliant avionics and high-reliability 260 V DC bus protection.
Availability
MAPLAD36KP260A is available at Aetrix Electronics and suitable for avionics power bus protection, automotive load dump suppression, industrial motor drive DC link protection, and railway signaling interface protection requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAPLAD36KP260A 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MAPLAD36KP260A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection in safety-critical airborne and vehicular systems where thermal stability and qualification traceability are mandatory.
FAQ
What is the maximum clamping voltage of MAPLAD36KP260A at its rated peak pulse current?
The MAPLAD36KP260A has a maximum clamping voltage (VC) of 419 V at 10 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is specified in the Electrical Characteristics table of the RF01216 Rev B datasheet and represents the upper limit of voltage seen by downstream circuitry during a full-rated surge event. Designers must ensure all protected components have voltage ratings exceeding 419 V to maintain functional safety.
Is MAPLAD36KP260A qualified for automotive applications per AEC-Q101?
Yes, MAPLAD36KP260A is explicitly tested and qualified to AEC-Q101 standards, as confirmed in the "High-Reliability screening available" section of the RF01216 Rev B datasheet. This qualification covers stress tests including HTGB, HTRB, TST, and surge testing, making MAPLAD36KP260A suitable for under-hood and powertrain applications where reliability under thermal cycling and electrical overstress is critical.
Does MAPLAD36KP260A meet RTCA DO-160F Section 22 lightning requirements?
Yes, MAPLAD36KP260A is validated for RTCA DO-160F Section 22 multi-stroke lightning testing, specifically Waveform 4 (6.4/69 μs) at Level 4. The datasheet confirms this capability for the entire MPLAD36KP14A–400CA family, including MAPLAD36KP260A, and notes that performance is maintained with proper mounting per the recommended pad layout and thermal management.
What is the thermal resistance from junction to case (RθJC) for MAPLAD36KP260A?
The MAPLAD36KP260A has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with the device mounted on a heatsink as specified in the datasheet. This low value is enabled by the metal-base cathode construction and is essential for dissipating cumulative heat during multi-pulse events such as repeated lightning strikes. Designers must solder the cathode directly to a thermally robust copper plane or heatsink to achieve this rating.
Can MAPLAD36KP260A be used in bidirectional configurations?
No, MAPLAD36KP260A is a unidirectional TVS. Its part number suffix "A" (not "CA") confirms unidirectional polarity. For bidirectional operation at 260 V, the correct variant is MAPLAD36KP260CA. Using MAPLAD36KP260A in AC or bipolar signal paths will result in forward conduction during negative half-cycles, potentially damaging the device or the circuit.
MAPLAD36KP260A 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):
- 260V
- Voltage - Breakdown (Min):
- 289V
- Voltage - Clamping (Max) @ Ipp:
- 419V
- Current - Peak Pulse (10/1000µs):
- 86A
- 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
MAPLAD36KP260A FAQ
1.How can I place an order for MAPLAD36KP260A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP260A 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 MAPLAD36KP260A reliable?
The price and inventory of MAPLAD36KP260A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP260A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP260A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP260A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP260A?
MAPLAD36KP260A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP260A 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 MAPLAD36KP260A?
For technical support, including MAPLAD36KP260A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP260A requirements.
6.How does Aetrix verify that MAPLAD36KP260A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP260A 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 MAPLAD36KP260A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP260A?
All MAPLAD36KP260A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP260A, 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 MAPLAD36KP260A part is unused and in its original packaging.
Return procedure for MAPLAD36KP260A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP260A Tags
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