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Microchip Technology MPLAD36KP48CA/TR
- Part No.:
- MPLAD36KP48CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP48CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:3,265
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Product details
Overview
MPLAD36KP48CA/TR from Microsemi (now Microchip) is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps transients to ≤77.4 V at 466 A, and features a 48 V working standoff voltage with <5 ns response time.
For engineers reviewing the MPLAD36KP48CA/TR datasheet, MPLAD36KP48CA/TR pinout, MPLAD36KP48CA/TR application, or MPLAD36KP48CA/TR equivalent, key selection criteria include bidirectional polarity, DO-160G Waveform 4/5A compliance, IEC 61000-4-5 Class 4–5 secondary lightning capability, thermal resistance of 1.0 °C/W (junction-to-case), and RoHS-compliant matte-tin plating.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp fast-rising transients, with bidirectional symmetry enabling protection on AC or floating DC lines. Its low RθJC = 1.0 °C/W and metal-base cathode construction support high-power dissipation without external heatsinking under short-duration surges.
The device meets RTCA DO-160G Section 22 multi-stroke lightning requirements and supports IEC 61000-4-5 testing at 2 Ω, 12 Ω, and 42 Ω source impedances - with verified Level 4/5 pin injection protection per Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR @ IBR | 53.3–58.9 V @ 5 mA - Breakdown onset range; ensures reliable triggering above normal operating voltage. |
| VC @ IPP | 77.4 V @ 466 A - Clamping voltage during full-rated 10/1000 μs surge; defines maximum stress on downstream circuitry. |
| IPP | 466 A - Peak impulse current capacity; determines survivability against standardized lightning and load-dump events. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables direct mounting to PCB copper pour or heatsink for sustained energy handling. |
| TJ Range | –55 to +150 °C - Full operational junction temperature range; validated for under-hood automotive and avionics environments. |
| αV(BR) | 54 mV/°C - Temperature coefficient of breakdown voltage; allows accurate derating across temperature extremes. |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - void-free UL94V-0 epoxy body with metal base cathode terminal; 1.7–2.0 g mass; RoHS-compliant matte-tin plating; bulk or tape-and-reel (TR suffix) packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (K) | Primary heat path and electrical return; must be soldered to large copper area for thermal management and low-inductance grounding. |
| Top Surface Marking | Anode (A) | Non-contact terminal; polarity identification via part number "CA" suffix confirms bidirectional operation - no anode/cathode distinction in circuit function. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetrical clamping on AC lines or ungrounded DC buses without polarity sensitivity - critical for aircraft data bus and motor drive feedback protection. |
| 36 kW peak pulse rating | Supports single-event survival against RTCA DO-160G Section 22 lightning strokes up to 200 A (42 Ω) and 1000 A (2 Ω) waveforms. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications including 12 V/24 V battery line protection against load dump and alternator transients. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly and reduces handling cost in high-volume production. |
| Wafer and assembly lot traceability | Enables full supply chain auditability for DO-160G certification documentation and failure root-cause analysis in safety-critical systems. |
Applications
| Aircraft Power Distribution | Automotive Battery Rail Protection |
|---|---|
Use Scenario: Protecting 28 V DC distribution panels in commercial aircraft against DO-160G Section 22 lightning-induced surges on primary and secondary power feeds. IC Role / Device Role / Timing Role: Bidirectional TVS device clamping transients within 5 ns to limit voltage stress on upstream contactors and downstream DC-DC converters. Use Value: Meets Level 4/5 pin injection immunity for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), ensuring compliance without additional filtering stages. | Use Scenario: Safeguarding engine control unit (ECU) inputs and CAN transceivers connected to the vehicle battery rail during ISO 7637-2 load dump events. IC Role / Device Role / Timing Role: High-power transient suppressor absorbing up to 36,000 W for 1000 μs while maintaining clamping below 80 V to preserve 5 V/3.3 V logic integrity. Use Value: AEC-Q101 qualification and 150 °C junction rating enable direct placement near battery connectors in under-hood environments. |
| Industrial Motor Drive Feedback | Renewable Energy Inverter DC Link |
Use Scenario: Shielding encoder and resolver signal lines in servo drives from commutation-induced EFT and RFI coupling. IC Role / Device Role / Timing Role: Bidirectional TVS providing symmetric clamping on differential pairs to prevent latch-up or damage in isolated analog front-ends. Use Value: Low capacitance (<100 pF typical at 0 V) minimizes signal distortion on high-speed position feedback channels up to 1 MHz. | Use Scenario: Secondary surge protection on the DC link of solar inverters exposed to induced lightning transients from long PV string wiring. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing multi-kA impulses per IEC 61000-4-5 (42 Ω source) without degradation over repeated strikes. Use Value: 48 V VWM aligns with 400–800 V DC link pre-regulation stages, allowing staged protection architecture with upstream MOVs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | 600 W peak power (vs. 36,000 W); DO-214AA package; RθJC ≈ 40 °C/W. | Limited to low-energy ESD/EFT; unsuitable for DO-160G lightning or load dump. | Select only for board-level signal-line protection where surge energy is <10 J. |
| SMCJ48CA | 1500 W peak power; DO-214AB package; RθJC ≈ 15 °C/W; no AEC-Q101 or DO-160G validation. | Acceptable for industrial I/O protection but lacks aerospace qualification and thermal robustness. | Choose when cost is prioritized over certified lightning performance and thermal cycling reliability. |
Compared with SMBJ48CA and SMCJ48CA, MPLAD36KP48CA/TR provides 24× and 24× higher peak power respectively, validated DO-160G compliance, and 15× lower thermal resistance - making it the sole option for certified multi-stroke lightning protection in safety-critical platforms.
Availability
MPLAD36KP48CA/TR is available at Aetrix Electronics and suitable for aircraft power distribution, automotive battery rail protection, and industrial motor drive feedback requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MPLAD36KP48CA/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, designs high-reliability semiconductor solutions for aerospace, defense, communications, and industrial markets - with emphasis on radiation-hardened ICs, timing devices, and power protection components.
The MPLAD36KP series belongs to Microsemi's high-power surface-mount TVS portfolio, engineered specifically for DO-160G-compliant lightning protection and automotive load-dump immunity in mission-critical power systems.
FAQ
What does the "CA" suffix indicate in MPLAD36KP48CA/TR?
The "CA" suffix in MPLAD36KP48CA/TR denotes bidirectional polarity - meaning the device provides symmetrical clamping for both positive and negative transients without requiring orientation during PCB layout. This is essential for protecting AC-coupled lines, differential buses, or ungrounded DC systems where voltage polarity reversal may occur during surge events. Unlike unidirectional variants (e.g., MPLAD36KP48A), MPLAD36KP48CA/TR functions identically in either direction.
Is MPLAD36KP48CA/TR qualified for automotive applications?
Yes, MPLAD36KP48CA/TR is AEC-Q101 qualified, confirming its suitability for automotive powertrain and chassis applications including 12 V/24 V battery rail protection. It withstands load dump transients per ISO 7637-2 and operates reliably from –55 °C to +150 °C junction temperature. Its low RθJC of 1.0 °C/W supports thermal management in under-hood environments without auxiliary heatsinking.
How does MPLAD36KP48CA/TR meet RTCA DO-160G Section 22 requirements?
MPLAD36KP48CA/TR meets RTCA DO-160G Section 22 multi-stroke lightning standards through its 36,000 W peak pulse rating at 10/1000 μs, <5 ns response time, and validated performance on Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). It achieves Level 4/5 pin injection immunity when mounted per recommended pad layout and is tested per full DO-160G test protocols - not just parameter compliance.
What is the thermal design implication of RθJC = 1.0 °C/W for MPLAD36KP48CA/TR?
RθJC = 1.0 °C/W means that for every watt of steady-state power dissipated at the junction, the temperature rise above case temperature is only 1 °C - enabling efficient heat transfer from die to PCB copper pour or heatsink. In practice, this allows MPLAD36KP48CA/TR to handle repeated 36 kW surges without thermal runaway when the metal base is soldered to ≥250 mm² of 2 oz copper, significantly reducing reliance on external cooling.
Can MPLAD36KP48CA/TR replace older PLAD-series TVS diodes in existing designs?
Yes, MPLAD36KP48CA/TR maintains mechanical and electrical compatibility with legacy PLAD-package TVS diodes, including identical footprint, pad layout, and cathode-down thermal interface. Its enhanced 36 kW rating, AEC-Q101 qualification, and DO-160G validation make it a drop-in upgrade for designs previously using lower-power PLAD parts - provided the PCB copper area meets the recommended thermal pad dimensions per Figure 7 in the datasheet.
MPLAD36KP48CA/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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 466A
- 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
MPLAD36KP48CA/TR FAQ
1.How can I place an order for MPLAD36KP48CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP48CA/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 MPLAD36KP48CA/TR reliable?
The price and inventory of MPLAD36KP48CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP48CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP48CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP48CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP48CA/TR?
MPLAD36KP48CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP48CA/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 MPLAD36KP48CA/TR?
For technical support, including MPLAD36KP48CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP48CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP48CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP48CA/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 MPLAD36KP48CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP48CA/TR?
All MPLAD36KP48CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP48CA/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 MPLAD36KP48CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP48CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP48CA/TR Tags
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