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Microchip Technology MPLAD36KP26CAE3/TR
- Part No.:
- MPLAD36KP26CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP26CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,191
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Product details
Overview
MPLAD36KP26CAE3/TR from Microchip (formerly Microsemi) is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It features a 26 V working standoff voltage (VWM), 43.0 V maximum clamping voltage (VC) at 838 A peak pulse current (IPP), and 36,000 W peak pulse power rating at 10/1000 µs waveform - validated for RTCA DO-160 Section 22 multi-stroke lightning compliance.
For engineers reviewing the MPLAD36KP26CAE3/TR datasheet, MPLAD36KP26CAE3/TR pinout, MPLAD36KP26CAE3/TR application, or MPLAD36KP26CAE3/TR equivalent, this device is selected for secondary lightning protection (IEC 61000-4-5 Class 1–5), pin-injection transients (DO-160G Waveform 4 & 5A), and load-dump suppression where low thermal resistance (RθJC = 1.0 °C/W) and RoHS-compliant SMT reliability are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal/power lines without polarity constraints. Its silicon avalanche structure delivers sub-5 ns response time and clamps transients within 43.0 V while sustaining 838 A peak impulse current under standardized 10/1000 µs testing.
Thermally optimized PLAD package integrates a metal base acting as cathode terminal and primary heat path to PCB copper, achieving RθJA = 50 °C/W on FR4 with recommended pad layout. The device is AEC-Q101 qualified and rated for –55 °C to +150 °C junction operation, supporting harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR min/max | 28.9 V / 31.9 V - Breakdown occurs within this range at 5 mA test current; defines turn-on threshold tolerance. |
| VC @ IPP | 43.0 V - Clamped voltage seen by protected circuit during full 838 A surge; determines downstream component stress. |
| IPP | 838 A - Peak non-repetitive surge current survivable per 10/1000 µs waveform; correlates to 36 kW pulse power rating. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables direct heatsinking via metal base for sustained surge duty cycles. |
| TJ range | –55 °C to +150 °C - Full operational junction temperature range; supports engine bay, avionics, and industrial control environments. |
| αV(BR) | 24 mV/°C - Temperature coefficient of breakdown voltage; allows accurate derating over temperature in precision protection designs. |
Pinout & Package
PLAD package: surface-mount, void-free thermosetting epoxy body (UL94V-0), metal base serving as cathode terminal and primary thermal interface. Dimensions: 12.7 mm × 8.89 mm × 3.18 mm (L × W × H); weight ≈ 1.7–2.0 g. Cathode marked on metal base; polarity confirmed by "CA" suffix indicating bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Cathode) | Common terminal for both avalanche junctions | Serves as thermal sink and electrical reference; must be soldered to large copper pour for optimal RθJC performance. |
| Top Surface Anode | Anode connection for positive half-cycle conduction | Enables symmetrical clamping during negative transients on either side of floating line; no external polarity assignment required. |
| Top Surface Anode (mirror) | Anode connection for negative half-cycle conduction | Completes bidirectional path; ensures identical VC and IPP performance regardless of transient polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating DC buses without polarity-sensitive placement or external diodes. |
| 36 kW peak pulse rating | Validated at 10/1000 µs; meets RTCA DO-160 Section 22 multi-stroke lightning requirements for aircraft systems. |
| AEC-Q101 qualification | Confirms robustness for automotive powertrain and chassis applications including 12 V/24 V load dump events. |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to reflow; simplifies manufacturing and reduces handling risk. |
| RoHS-compliant (e3) | Meets EU Directive 2011/65/EU; matte-tin plating ensures reliable solderability per MIL-STD-750 Method 2026. |
Applications
| Aerospace Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC distribution lines in commercial aircraft against DO-160G Waveform 4 (6.4/69 µs) and Waveform 5A (40/120 µs) pin injection transients. IC Role / Device Role / Timing Role: Primary bidirectional clamping element placed directly at connector entry points to limit transient energy entering avionics bays. Use Value: Enables Level 4 and Level 5 compliance up to 300 V standoff variants; MPLAD36KP26CAE3/TR provides margin for 28 V nominal bus with 43.0 V clamping ceiling. |
Use Scenario: Secondary surge protection on 12 V sensor supply rails and CAN transceiver power inputs subjected to ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Fast-response shunt device absorbing >90% of 100–200 A surges within <5 ns, preventing latch-up or burnout of downstream LDOs and PHY ICs. Use Value: AEC-Q101 qualification and 838 A IPP ensure survival of repeated load dump events; low RθJC prevents thermal runaway during burst-mode testing. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protection of 48 V DC intermediate bus in variable-frequency drives against IGBT switching-induced transients and inductive kickback. IC Role / Device Role / Timing Role: High-power TVS placed across bus capacitors to clamp overshoot exceeding 26 V working voltage during rapid deceleration or fault conditions. Use Value: 36,000 W rating sustains multiple 10/1000 µs surges without degradation; clamping at 43.0 V preserves MOSFET gate oxide integrity and controller reset margins. |
Use Scenario: Surge hardening of 72 V signaling lines in ERTMS/ETCS Level 2 trackside equipment exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bidirectional front-end protector on isolated RS-485 or MVB interfaces, referenced to local ground but tolerant of common-mode shifts up to ±2 kV. Use Value: Symmetrical VC ensures equal protection for positive/negative surges; metal-base thermal path maintains performance under sustained ambient temperatures up to +70 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | Lower 600 W peak power rating; 3.5 mm × 4.6 mm SMB package; RθJC ≈ 15 °C/W; VC = 42.1 V @ 17.1 A. | Targeted for board-level ESD/EFT (IEC 61000-4-2/4-4), not multi-stroke lightning or load dump. | Select when cost, size, or lower surge energy suffices - not for DO-160G or ISO 7637-2 compliance. |
| SMCJ26CA | 1500 W peak power; larger SMC package; RθJC ≈ 3.5 °C/W; VC = 42.8 V @ 35.1 A; no AEC-Q101 or DO-160G validation. | Suitable for general-purpose industrial surge suppression where 36 kW rating is unnecessary. | Choose for mid-tier energy handling with better thermal performance than SMBJ but less ruggedness than MPLAD36KP26CAE3/TR. |
Compared with SMBJ26CA and SMCJ26CA, MPLAD36KP26CAE3/TR delivers 60× higher pulse power capacity, certified aerospace-grade reliability, and validated multi-stroke lightning endurance - making it irreplaceable in safety-critical, high-energy transient environments where thermal management and regulatory compliance are non-negotiable.
Availability
MPLAD36KP26CAE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical designs.
Supply support for MPLAD36KP26CAE3/TR 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
Microchip Technology Inc. (NASDAQ: MCHP) is a global semiconductor company formed through the acquisition of Microsemi in 2018, delivering high-reliability analog, mixed-signal, and timing solutions for aerospace, defense, and industrial markets.
MPLAD36KP26CAE3/TR belongs to Microchip's high-power PLAD-series TVS portfolio, engineered specifically for mission-critical surge immunity in aviation, rail, and heavy-vehicle systems where multi-kilowatt transient absorption and thermal resilience are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP26CAE3/TR and how is it measured?
The MPLAD36KP26CAE3/TR has a maximum clamping voltage (VC) of 43.0 V, measured at its peak pulse current (IPP) of 838 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the upper voltage limit imposed on protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range per the official datasheet.
Is MPLAD36KP26CAE3/TR suitable for automotive applications?
Yes, MPLAD36KP26CAE3/TR is AEC-Q101 qualified and explicitly rated for automotive load dump protection per ISO 7637-2. Its 26 V working standoff voltage aligns with 12 V system architectures, and its 43.0 V clamping ceiling ensures safe operation of downstream 5 V and 3.3 V regulators and microcontrollers during high-current transients.
Does MPLAD36KP26CAE3/TR require special PCB layout considerations?
Yes - the metal base of MPLAD36KP26CAE3/TR serves as the cathode and primary thermal path. It must be soldered to a minimum 25 mm² copper pour (1 oz Cu) with thermal vias to internal ground planes to achieve the specified RθJC = 1.0 °C/W and prevent thermal saturation during repeated surges.
How does the "CA" suffix in MPLAD36KP26CAE3/TR affect its functionality?
The "CA" suffix denotes bidirectional construction, meaning MPLAD36KP26CAE3/TR provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional "A" variants, it protects AC-coupled lines, differential buses, or floating DC rails without requiring orientation-specific placement on the PCB.
What standards does MPLAD36KP26CAE3/TR meet for lightning protection?
MPLAD36KP26CAE3/TR is validated for RTCA DO-160 Section 22 multi-stroke lightning testing and supports IEC 61000-4-5 secondary lightning protection up to Class 5 (42 Ω source) and Class 4 (12 Ω source). Its 36,000 W rating and sub-5 ns response enable compliance where high-energy, fast-rising transients threaten avionics and rail signaling systems.
MPLAD36KP26CAE3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP26CAE3/TR FAQ
1.How can I place an order for MPLAD36KP26CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP26CAE3/TR 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 MPLAD36KP26CAE3/TR reliable?
The price and inventory of MPLAD36KP26CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP26CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP26CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP26CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP26CAE3/TR?
MPLAD36KP26CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP26CAE3/TR 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 MPLAD36KP26CAE3/TR?
For technical support, including MPLAD36KP26CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP26CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP26CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP26CAE3/TR 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 MPLAD36KP26CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP26CAE3/TR?
All MPLAD36KP26CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP26CAE3/TR, 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 MPLAD36KP26CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP26CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP26CAE3/TR Tags
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