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Microchip Technology MPLAD36KP58CA
- Part No.:
- MPLAD36KP58CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP58CA.pdf
- Description:
- TVS DIODE 58VWM 93.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,715
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Product details
Overview
MPLAD36KP58CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 58 V reverse standoff voltage (VWM), clamps to ≤93.6 V at 385 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements for aircraft electronics.
For engineers reviewing the MPLAD36KP58CA datasheet, MPLAD36KP58CA pinout, MPLAD36KP58CA application, or MPLAD36KP58CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 (Level 4 up to 400 V) and Waveform 5A (Level 4 up to 78 V), and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with bidirectional symmetry enabling protection of AC-coupled or differential signal/power lines without polarity concerns. Its low thermal resistance (RθJC = 1.0 °C/W) and void-free thermosetting epoxy package enable rapid heat dissipation during repetitive surges.
It supports multi-level system-level immunity: Class 1–5 IEC 61000-4-5 testing (42 Ω, 12 Ω, and 2 Ω source impedances), RTCA/DO-160F Waveform 4 (6.4/69 μs) Level 4 up to 400 V, and Waveform 5A (40/120 μs) Level 4 up to 78 V - all validated under controlled case temperature conditions per Microsemi RF01216 Rev B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V maximum working standoff voltage - ensures no conduction during normal 58 V DC or peak AC operation |
| V(BR) min/max | 64.4 V to 71.2 V breakdown range at 5 mA - defines reliable turn-on threshold across temperature and lot variation |
| VC @ IPP | ≤93.6 V clamping voltage at 385 A peak pulse - limits downstream voltage stress during worst-case transients |
| PPP | 36,000 W peak pulse power at 10/1000 μs - sustains high-energy lightning-induced surges without failure |
| IPP | 385 A maximum peak pulse current - quantifies surge current handling capacity for layout trace sizing |
| RθJC | 1.0 °C/W junction-to-case thermal resistance - enables effective heatsinking via metal base mounting |
| TJ/TSTG | −55 °C to +150 °C operating and storage range - supports extended temperature deployment in avionics and engine bays |
Pinout & Package
Package: PLAD - surface-mount, low-profile, void-free thermosetting epoxy body with metal base (cathode for unidirectional variants); RoHS-compliant matte-tin plating; UL94V-0 rated; weight ≈1.7–2.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top side) | Transient current entry (bidirectional) | Accepts surge current from either polarity; symmetric conduction path relative to cathode |
| Cathode (metal base) | Transient current return / thermal path | Serves as primary heat sink interface; must be soldered to copper pour for RθJC = 1.0 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC lines, differential buses, or floating power rails without polarity constraints |
| 36 kW peak pulse rating @ 10/1000 μs | Meets RTCA DO-160 Section 22 multi-stroke lightning test requirements for commercial aircraft systems |
| 1.0 °C/W junction-to-case thermal resistance | Allows direct thermal coupling to PCB copper or external heatsink, critical for repetitive surge duty cycles |
| IEC 61000-4-5 Class 4 & 5 compliance (42 Ω, 12 Ω, 2 Ω) | Validated for secondary lightning protection in industrial control cabinets and vehicle ECUs with varying source impedance |
| RTCA/DO-160F Waveform 4 Level 4 (6.4/69 μs) | Supports pin-injection immunity up to 400 V standoff-rated devices - applicable to MPLAD36KP58CA in full voltage range |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus inputs against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at board edge before DC-DC converter input. Use Value: Limits transient voltage to ≤93.6 V during 36 kW surges, preventing damage to upstream regulators and ensuring DO-160 compliance without derating. | Use Scenario: Load dump and alternator surge suppression on 12 V power rail in engine bay electronics. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, mounted directly to thermal pad. Use Value: Withstands 385 A peak pulses and dissipates heat via metal base, meeting AEC-Q101 and ISO 7637-2 Pulse 5a requirements. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Secondary surge protection on 60 V DC intermediate bus feeding gate drivers and sensors. IC Role / Device Role / Timing Role: Fast-response clamping device placed after bulk filter capacitors to absorb switching transients. Use Value: Clamps within <5 ns (bidirectional), limiting voltage overshoot to safe levels for 65 V-rated MOSFETs and isolated gate drivers. | Use Scenario: Protection of 58 V nominal signaling lines in trackside equipment exposed to induced lightning currents. IC Role / Device Role / Timing Role: Bidirectional TVS on differential RS-485 or MVB lines interfacing with outdoor infrastructure. Use Value: Matches 58 V line voltage with precise VWM, provides symmetrical clamping, and passes IEC 61000-4-5 Class 4 with 42 Ω source impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | 600 W PPP rating, SMC package, 38.9 V VC @ 15.3 A IPP | Lower energy handling; suitable only for board-level ESD/EFT, not lightning or load dump | Select when surge energy is <10 J and peak current <20 A - not a drop-in replacement for MPLAD36KP58CA |
| SMCJ58CA | 1500 W PPP rating, SMC package, 93.6 V VC @ 160 A IPP | Limited to single-stroke events; insufficient for RTCA DO-160 multi-stroke validation | Use where cost sensitivity outweighs aerospace qualification needs; requires layout review due to lower thermal mass |
Compared with SMBJ58CA and SMCJ58CA, the MPLAD36KP58CA delivers 24× and 24× higher peak pulse power respectively, enables verified multi-stroke lightning endurance, and provides superior thermal management via metal-base mounting - making it uniquely suited for certified aerospace and high-reliability automotive power protection.
Availability
MPLAD36KP58CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power inputs, and industrial motor drive DC bus protection requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP58CA 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP58CA belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for certified lightning and load-dump protection in safety-critical systems.
FAQ
What is the clamping voltage of the MPLAD36KP58CA at its rated peak pulse current?
The MPLAD36KP58CA has a maximum clamping voltage (VC) of 93.6 V at its rated peak pulse current (IPP) of 385 A under 10/1000 μs waveform conditions. This value is measured across the device terminals with proper thermal mounting and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MPLAD36KP58CA maintains this clamping performance consistently across its qualified operating temperature range.
Is the MPLAD36KP58CA certified for RTCA DO-160 lightning testing?
Yes, the MPLAD36KP58CA is validated for RTCA DO-160 Section 22 multi-stroke lightning testing per Microsemi RF01216 Rev B. It meets Level 4 pin-injection immunity for Waveform 4 (6.4/69 μs) up to 400 V standoff-rated variants, and its 36 kW peak pulse power rating supports full compliance when integrated into systems with appropriate layout and thermal design. The MPLAD36KP58CA is explicitly listed in the standard's device coverage table.
How does the metal base of the MPLAD36KP58CA function electrically and thermally?
The metal base of the MPLAD36KP58CA serves as the cathode terminal for unidirectional variants and as the common return path for bidirectional operation - in the MPLAD36KP58CA, it forms one conduction terminal and the primary thermal interface. With a specified RθJC of 1.0 °C/W, the base must be soldered to a large copper area or heatsink to achieve rated pulse power; electrical isolation from chassis ground is required unless system grounding architecture permits direct connection.
Can the MPLAD36KP58CA replace unidirectional TVS diodes in existing designs?
The MPLAD36KP58CA is bidirectional and cannot directly replace unidirectional TVS diodes without circuit review. Its symmetrical V-I curve clamps equally on both polarities, which may interfere with DC biasing or cause unintended conduction in single-polarity circuits. If replacing a unidirectional device like MPLAD36KP58A, verify that the protected node is truly floating or AC-coupled; otherwise, select the unidirectional variant to maintain correct polarity behavior. The MPLAD36KP58CA is not a pin-compatible substitute for unidirectional versions.
What is the moisture sensitivity level (MSL) and reflow profile for the MPLAD36KP58CA?
The MPLAD36KP58CA has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it is not moisture-sensitive and requires no dry pack or floor life limitations. Its maximum solder temperature is rated at 260 °C for 10 seconds. Reflow profiles must maintain peak temperature ≤260 °C with ramp rates and time-above-liquidus consistent with tin-lead or RoHS-compliant matte-tin terminations. The MPLAD36KP58CA's thermosetting epoxy body is stable under standard lead-free reflow conditions.
MPLAD36KP58CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 385A
- 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
MPLAD36KP58CA FAQ
1.How can I place an order for MPLAD36KP58CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP58CA 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 MPLAD36KP58CA reliable?
The price and inventory of MPLAD36KP58CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP58CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP58CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP58CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP58CA?
MPLAD36KP58CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP58CA 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 MPLAD36KP58CA?
For technical support, including MPLAD36KP58CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP58CA requirements.
6.How does Aetrix verify that MPLAD36KP58CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP58CA 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 MPLAD36KP58CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP58CA?
All MPLAD36KP58CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP58CA, 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 MPLAD36KP58CA part is unused and in its original packaging.
Return procedure for MPLAD36KP58CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP58CA Tags
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