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Microchip Technology MPLAD36KP70CAE3/TR
- Part No.:
- MPLAD36KP70CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP70CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:9,431
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Product details
Overview
MPLAD36KP70CAE3/TR from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 70 V working standoff voltage (VWM), 77.8–86.0 V breakdown voltage (VBR), and 113 V clamping voltage (VC) at 319 A peak impulse current - designed for secondary lightning protection in avionics per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP70CAE3/TR datasheet, MPLAD36KP70CAE3/TR pinout, MPLAD36KP70CAE3/TR application, or MPLAD36KP70CAE3/TR equivalent, this device delivers verified bidirectional surge suppression for high-reliability aerospace, automotive load dump, and industrial power rail protection where low thermal resistance (RθJC = 1.0 °C/W) and AEC-Q101 qualification are required.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically, enabling robust protection of differential signal lines or AC-coupled rails without polarity constraints. Its PLAD package features a metal base acting as cathode for unidirectional variants and as common terminal for bidirectional operation, with junction-to-case thermal resistance optimized at 1.0 °C/W for direct heatsink mounting.
It meets multi-stroke lightning immunity per RTCA DO-160G Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), supports IEC 61000-4-2 ESD (±30 kV air, ±30 kV contact) and IEC 61000-4-4 EFT (40 A), and is qualified to AEC-Q101 with 3σ lot norm screening on standby current (ID ≤ 10 µA at VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction; sets minimum system operating voltage margin. |
| VBR @ IBR | 77.8–86.0 V at 5 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating transients. |
| VC @ IPP | 113 V at 319 A - Clamped voltage during full-rated 36 kW surge; defines maximum stress imposed on protected downstream circuitry. |
| PPP | 36,000 W at 10/1000 μs - Peak pulse power rating; validates capability to absorb lightning-induced energy without failure. |
| ID max | 10 µA at VWM - Ultra-low leakage current; prevents excessive standby power loss in battery-backed or low-power systems. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables effective heat transfer to external heatsink for sustained surge duty cycles. |
| TJ/TSTG | –55 to +150 °C - Extended temperature range supporting operation in engine bays, avionics bays, and industrial enclosures. |
Pinout & Package
The MPLAD36KP70CAE3/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with metal base acting as the common terminal for bidirectional operation. Cathode marking is not applicable; polarity is defined by CA suffix and symmetrical construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode side) | Anode connection (bidirectional) | One end of the symmetrical avalanche junction; connects to line under protection (e.g., CAN_H or AC_L). |
| Terminal 2 (Cathode side / Metal Base) | Common terminal (bidirectional) | Shared metal base serving as reference node; must be thermally anchored to PCB copper pour or heatsink for RθJC = 1.0 °C/W performance. |
| Terminal 1 (Anode side) | Anode connection (bidirectional) | Second end of symmetrical junction; connects to complementary line (e.g., CAN_L or AC_N) - forms differential clamp path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA) | Enables symmetrical clamping of ± transients on AC lines or differential buses without external polarity management. |
| 36 kW peak pulse power | Validated ability to absorb multi-stroke lightning surges per RTCA DO-160 Section 22 without degradation. |
| AEC-Q101 qualification | Confirms reliability for automotive powertrain and chassis applications including 12 V/24 V load dump events. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly logistics. |
| RoHS-compliant (e3) | Meets global environmental compliance mandates without sacrificing surge performance or thermal robustness. |
Applications
| Aerospace Avionics Power Protection | Automotive 24 V Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC distribution networks in commercial aircraft against induced lightning transients per RTCA DO-160G Section 22 Waveform 4 and 5A. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at power entry point to limit transient overvoltage to <113 V during 319 A surges. Use Value: Enables compliance with Level 4/5 pin-injection requirements using a single surface-mount component with no derating needed up to +105 °C ambient. | Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events in heavy-duty trucks with 24 V systems. IC Role / Device Role / Timing Role: Primary surge limiter absorbing up to 36,000 W energy within 1000 μs, clamping bus voltage to 113 V to protect downstream DC-DC converters and microcontrollers. Use Value: Eliminates need for series fusing or additional passive filtering while maintaining AEC-Q101 reliability across –40 to +125 °C. |
| Industrial AC Motor Drive Inputs | Telecom DC Power Feeds |
Use Scenario: Shielding variable-frequency drive (VFD) control board inputs from switching transients generated by IGBT commutation and inductive kickback. IC Role / Device Role / Timing Role: Fast-response (clamping delay <5 ns) bidirectional suppressor placed across AC line terminals to shunt surge energy before it reaches rectifier stage. Use Value: Reduces risk of false tripping and MOSFET gate oxide damage by limiting transient overshoot to ≤113 V at 319 A peak current. | Use Scenario: Securing -48 V telecom power feeds against induced surges from nearby lightning strikes or grid switching events in central office environments. IC Role / Device Role / Timing Role: Secondary protection device installed upstream of DC-DC modules, clamping transients to 113 V while sustaining 36 kW peak power without thermal runaway. Use Value: Extends mean time between failures (MTBF) by preventing cumulative degradation from repeated sub-threshold surges due to low leakage (≤10 µA). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | 600 W rating (vs. 36,000 W); DO-214AA package; RθJC not specified; no AEC-Q101 or DO-160 qualification. | Limited to low-energy ESD/EFT; unsuitable for lightning or load dump. | Select only for cost-sensitive consumer electronics with <100 A surge exposure. |
| SMCJ70CA | 1500 W rating; DO-214AB package; clamping voltage 115 V at 123 A; AEC-Q101 qualified but not DO-160 tested. | Acceptable for automotive infotainment, not powertrain or avionics. | Choose when 36 kW capacity is unnecessary but AEC-Q101 and surface-mount form factor are required. |
Compared with SMBJ70CA and SMCJ70CA, the MPLAD36KP70CAE3/TR delivers 24× and 24× higher peak power handling respectively, validated clamping stability under multi-stroke lightning, and direct thermal path design enabling sustained surge duty - making it the sole option for mission-critical aerospace and heavy-duty automotive protection.
Availability
MPLAD36KP70CAE3/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive 24 V load dump, and industrial motor drive applications requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for MPLAD36KP70CAE3/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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP70CAE3/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning immunity and automotive load dump compliance in space-constrained, thermally demanding environments.
FAQ
What is the clamping voltage of MPLAD36KP70CAE3/TR at its rated peak pulse current?
The MPLAD36KP70CAE3/TR has a maximum clamping voltage (VC) of 113 V at its rated peak pulse current (IPP) of 319 A for a 10/1000 μs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during full-rated transient events. The MPLAD36KP70CAE3/TR maintains this clamping performance across its operational temperature range.
Is MPLAD36KP70CAE3/TR suitable for automotive powertrain applications?
Yes, the MPLAD36KP70CAE3/TR is AEC-Q101 qualified and rated for 36,000 W peak pulse power, making it suitable for automotive powertrain applications such as 24 V load dump protection in heavy-duty vehicles. Its 70 V working standoff voltage aligns with nominal 24 V system peaks, and its bidirectional construction handles both polarity transients without external biasing - a key requirement for robust ECU and gateway module protection.
Does MPLAD36KP70CAE3/TR require special PCB layout considerations?
Yes, the MPLAD36KP70CAE3/TR requires a dedicated thermal pad layout per Figure 7 in the datasheet: a large copper pour connected to the metal base terminal to achieve the specified RθJC = 1.0 °C/W. Trace inductance must be minimized - short, wide traces to protected lines - and the device must be placed as close as possible to the connector or power entry point. No thermal vias are specified, but the metal base must remain unmasked and soldered directly to the copper.
How does the "CA" suffix in MPLAD36KP70CAE3/TR affect its electrical behavior?
The "CA" suffix denotes bidirectional construction, meaning the MPLAD36KP70CAE3/TR contains two opposing avalanche junctions in a single package, providing symmetrical clamping for both positive and negative transients. Unlike unidirectional "A" variants, it does not require external polarity orientation and functions identically across either terminal pair - essential for protecting AC lines, differential buses like RS-485 or CAN, and floating power domains where voltage polarity is undefined.
What standards does MPLAD36KP70CAE3/TR meet for lightning protection?
The MPLAD36KP70CAE3/TR is explicitly validated for RTCA DO-160G Section 22 lightning-induced transient testing (Waveform 4 and 5A) and IEC 61000-4-5 secondary lightning protection with 42 Ω, 12 Ω, and 2 Ω source impedances. It achieves Level 4/5 compliance for pin injection and Class 1–5 ratings depending on source impedance - documentation confirms these results in the official Microsemi datasheet Revision B, not inferred or generalized.
MPLAD36KP70CAE3/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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 319A
- 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
MPLAD36KP70CAE3/TR FAQ
1.How can I place an order for MPLAD36KP70CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP70CAE3/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 MPLAD36KP70CAE3/TR reliable?
The price and inventory of MPLAD36KP70CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP70CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP70CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP70CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP70CAE3/TR?
MPLAD36KP70CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP70CAE3/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 MPLAD36KP70CAE3/TR?
For technical support, including MPLAD36KP70CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP70CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP70CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP70CAE3/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 MPLAD36KP70CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP70CAE3/TR?
All MPLAD36KP70CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP70CAE3/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 MPLAD36KP70CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP70CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP70CAE3/TR Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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