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Microchip Technology MAPLAD36KP26AE3
- Part No.:
- MAPLAD36KP26AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP26AE3.pdf
- Description:
- TVS DIODE 26VWM 43VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,706
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Product details
Overview
MAPLAD36KP26AE3 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 kW peak pulse power at 10/1000 μs, clamps at ≤43.0 V @ 838 A, and features a 26 V reverse standoff voltage (VWM), 28.9–31.9 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 MAPLAD36KP26AE3 datasheet, MAPLAD36KP26AE3 pinout, MAPLAD36KP26AE3 application, or MAPLAD36KP26AE3 equivalent, key selection criteria include its 26 V VWM rating, 838 A peak pulse current capability, RoHS-compliant e3 termination, low-profile PLAD package with metal-base cathode, and compliance with IEC 61000-4-5 (Class 3, 42 Ω source) and RTCA DO-160F Waveform 4 Level 4.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry to divert high-energy transients-such as load dump, lightning-induced surges, and EFT-away from downstream components. Its unidirectional polarity and metal-base cathode configuration enable efficient heat dissipation via PCB copper pour or heatsink mounting.
The device is characterized by fast response (<100 ps rise time), low clamping ratio (VC/V(BR) ≈ 1.35), and stable performance across –55°C to +150°C junction temperature. It undergoes 100% surge testing per MIL-STD-750 Method 3019 and supports secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - enables robust protection against multi-stroke lightning and automotive load dump events without thermal runaway |
| Reverse Standoff Voltage (VWM) | 26 V - matches nominal 24 V automotive and avionics bus systems while providing margin above peak operating voltage |
| Clamping Voltage (VC) | 43.0 V max @ 838 A - limits transient overvoltage to safe levels for 3.3 V/5 V/12 V logic and power ICs |
| Breakdown Voltage (V(BR)) | 28.9–31.9 V @ 5 mA - ensures reliable turn-on before system damage threshold is exceeded |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct thermal coupling to heatsink or large copper area for sustained multi-pulse operation |
| RoHS Compliance | e3 marking - matte-tin plating compatible with lead-free reflow profiles and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity |
| Qualification Standard | AEC-Q101 - validated for automotive under-hood and powertrain applications requiring high reliability |
Pinout & Package
MAPLAD36KP26AE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), metal base cathode terminal, and tin-plated terminals. The cathode is the entire metal bottom surface; the anode is the top-side metallized pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be soldered to ≥250 mm² copper pour or heatsink |
| Top Metallized Pad | Anode | Transient current entry point; connects to protected line (e.g., 24 V supply rail or signal line) |
Key Features
| Feature | Design Value |
|---|---|
| High-Power Clamping | 36 kW PPP rating enables single-device protection for 24 V systems against ISO 7637-2 Pulse 5a/b and DO-160 Section 22 Category A/B/C |
| Low Thermal Resistance | 1.0 °C/W RθJC allows >100 pulses at 1 Hz without derating when mounted on ≥400 mm² 2 oz Cu |
| Automotive Qualified | AEC-Q101 stress-tested for temperature cycling, HTRB, and surge endurance - suitable for engine control units and ADAS power rails |
| Lightning Compliance | Validated for RTCA DO-160F Waveform 4 Level 4 (6.4/69 μs) and IEC 61000-4-5 Class 3 (42 Ω source) |
| Traceable Manufacturing | Wafer and assembly lot traceability per MIL-PRF-19500 - required for aerospace DO-254/DO-178C hardware assurance |
Applications
| Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC distribution networks in commercial aircraft against induced lightning transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS placed at power entry point of flight control computers and sensor hubs. Use Value: Limits transient voltage to ≤43 V during 36 kW surges, preventing latch-up or burnout of downstream DC-DC converters and FPGAs. | Use Scenario: Safeguarding engine control modules (ECMs) during alternator load dump events in 24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Primary suppression device installed between battery feed and ECM input, rated per ISO 7637-2 Pulse 5b. Use Value: Absorbs 100 ms, 120 V transients at up to 838 A without degradation, eliminating need for series resistors or additional TVS stages. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Protecting IGBT gate drivers and current sensors on 24–48 V DC link rails in variable-frequency drives subjected to switching-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC link capacitor to clamp commutation spikes and regenerative energy transients. Use Value: Withstands repetitive 36 kW pulses at <0.05% duty cycle, maintaining clamping stability over 10⁵ surge events. | Use Scenario: Securing 24 V signaling lines in European railway interlocking systems compliant with EN 50121-3-2 for electromagnetic immunity. IC Role / Device Role / Timing Role: Bidirectional-capable variant used (MPLAD36KP26CA) on full-duplex RS-485 fieldbus nodes exposed to track-side EMI. Use Value: Meets Class 3 immunity (4 kV EFT, 2 kV surge) while supporting continuous 24 V operation with <10 μA standby leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A | 600 W PPP rating, SMA package, 12.5 °C/W RθJA - lacks multi-stroke lightning qualification and AEC-Q101 validation | Only suitable for consumer-grade single-pulse ESD/EFT; cannot meet DO-160 Section 22 or ISO 7637-2 Pulse 5 | Select only for cost-sensitive, non-safety-critical 24 V interfaces where surge energy is <100 mJ |
| SMCJ26A | 1500 W PPP, SMC package, 3.5 °C/W RθJC - qualified to AEC-Q101 but not DO-160 or MIL-STD-1275E | Acceptable for basic automotive infotainment power rails, but insufficient for engine bay or avionics primary protection | Use where board space permits larger SMC footprint and system-level testing does not require multi-stroke validation |
Compared with SMBJ26A and SMCJ26A, MAPLAD36KP26AE3 provides 24× and 24× higher peak pulse power respectively, certified multi-stroke lightning resilience, and 1.0 °C/W thermal resistance enabling direct heatsink mounting-making it the only option for mission-critical 24 V aerospace and heavy-duty automotive protection.
Availability
MAPLAD36KP26AE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive engine control units, industrial motor drive DC links, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP26AE3 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 PLAD-series TVS family was engineered specifically for high-energy transient suppression in safety-critical 24–230 V systems, emphasizing thermal robustness, multi-stroke endurance, and compliance with RTCA DO-160, ISO 7637, and IEC 61000-4-x standards.
FAQ
What is the maximum clamping voltage of MAPLAD36KP26AE3 at its rated peak pulse current?
The MAPLAD36KP26AE3 has a maximum clamping voltage (VC) of 43.0 V at its peak pulse current (IPP) of 838 A under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and ensures downstream 24 V-rated ICs remain within safe absolute maximum ratings during surge events.
Is MAPLAD36KP26AE3 suitable for bidirectional signal line protection?
No - MAPLAD36KP26AE3 is unidirectional. For bidirectional protection on AC or differential signal lines, use the CA-suffixed variant MPLAD36KP26CA. The "A" suffix explicitly denotes unidirectional polarity, with cathode on the metal base; reversing voltage beyond VWM will cause conduction only in the forward direction.
Does MAPLAD36KP26AE3 require a heatsink for continuous operation?
MAPLAD36KP26AE3 does not require an external heatsink for single-event surge suppression, but thermal management is critical for repetitive surges. Its 1.0 °C/W RθJC demands direct soldering to ≥250 mm² of 2 oz copper or attachment to a heatsink to maintain TJ <150°C during multi-pulse operation at >1 Hz repetition rate.
What is the meaning of the "E3" suffix in MAPLAD36KP26AE3?
The "E3" suffix in MAPLAD36KP26AE3 indicates RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity, qualified for standard lead-free reflow profiles (peak 260°C). It replaces legacy tin-lead terminations and ensures compatibility with modern assembly processes without dry-pack requirements.
How does MAPLAD36KP26AE3 perform under RTCA DO-160F Section 22 lightning testing?
MAPLAD36KP26AE3 is validated for RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4, meeting multi-stroke lightning requirements for commercial aircraft. Its 36 kW rating and low clamping ratio ensure system-level pass without additional filtering or staged protection.
MAPLAD36KP26AE3 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 838A
- 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
MAPLAD36KP26AE3 FAQ
1.How can I place an order for MAPLAD36KP26AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP26AE3 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 MAPLAD36KP26AE3 reliable?
The price and inventory of MAPLAD36KP26AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP26AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP26AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP26AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP26AE3?
MAPLAD36KP26AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP26AE3 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 MAPLAD36KP26AE3?
For technical support, including MAPLAD36KP26AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP26AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP26AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP26AE3 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 MAPLAD36KP26AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP26AE3?
All MAPLAD36KP26AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP26AE3, 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 MAPLAD36KP26AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP26AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP26AE3 Tags
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