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Microchip Technology MPLAD36KP48CAE3
- Part No.:
- MPLAD36KP48CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP48CAE3.pdf
- Description:
- TVS DIODE 48VWM 77.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,321
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Product details
Overview
MPLAD36KP48CAE3 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 48 V reverse standoff voltage (VWM), clamps to ≤77.4 V at 466 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements for aircraft electronics.
For engineers reviewing the MPLAD36KP48CAE3 datasheet, MPLAD36KP48CAE3 pinout, MPLAD36KP48CAE3 application, or MPLAD36KP48CAE3 equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, IEC 61000-4-5 Class 5 secondary lightning protection capability (42 Ω source), and DO-160F Waveform 4 Level 4 pin injection immunity up to 48 V standoff.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating above its 48 V working standoff voltage to divert transients away from sensitive components. Its silicon avalanche structure provides sub-nanosecond response time (<5 ns for bidirectional versions) and stable breakdown behavior across -55°C to +150°C operating range.
The device is optimized for low thermal resistance (RθJC = 1.0 °C/W) via metal-base construction, enabling efficient heat transfer to PCB copper pads or heatsinks. It complies with AEC-Q101 stress testing and supports MIL-PRF-19500 upscreening options for high-reliability programs requiring lot traceability and 3σ standby current screening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) min/max | 53.3–58.9 V - Breakdown occurs within this range at 5 mA test current, defining turn-on threshold. |
| VC @ IPP | ≤77.4 V @ 466 A - Maximum clamped voltage during 10/1000 μs surge, limiting downstream voltage stress. |
| PPP | 36,000 W - Peak pulse power handling at 10/1000 μs waveform, enabling robust lightning strike suppression. |
| RθJC | 1.0 °C/W - Enables direct thermal coupling to PCB ground plane or heatsink for sustained multi-pulse operation. |
| Standby Current | ≤10 μA @ 48 V - Negligible leakage under normal operation, preserving system efficiency and battery life. |
| DO-160F Waveform 4 | Level 4 - Withstands 6.4/69 μs pin-injection transients up to 48 V standoff, validated for avionics interfaces. |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) surface-mount package with metal base cathode termination. Dimensions: 12.32 × 10.54 × 3.68 mm (L × W × H), weight ~1.7–2.0 g. Cathode is the metal base (bottom side); anode is top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be soldered to large copper pour for thermal and electrical performance. |
| Top-Side Metallization | Anode | Signal/power input connection point; routed to protected line (e.g., 48 V bus, CAN bus, sensor supply). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC or bidirectional DC lines (e.g., data buses, dual-rail supplies) without polarity sensitivity. |
| RTCA DO-160 Section 22 compliance | Validated for multi-stroke lightning transients in aircraft systems, reducing qualification risk for avionics designs. |
| IEC 61000-4-5 Class 5 (42 Ω) | Meets highest-level secondary lightning immunity for industrial and transportation equipment with short-distance cabling. |
| e3 RoHS-compliant matte-tin plating | Ensures reliable solderability per MIL-STD-750 Method 2026 and eliminates lead-based assembly concerns. |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow, simplifying SMT manufacturing and reducing process cost. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC distribution panels and avionics power inputs against lightning-induced surges per DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at main power entry point to shunt >30 kA transients into chassis ground. Use Value: Enables single-device compliance with Level 4 pin injection (Waveform 4) and multi-stroke lightning without external series impedance. | Use Scenario: Safeguarding engine control units (ECUs) and body control modules (BCMs) during alternator load dump events (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: Parallel-connected surge absorber on 12/24 V battery rail, clamping transients to <78 V within 5 ns. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers during 120 V/400 ms load dump pulses. |
| Industrial Ethernet Switches | Railway Signaling Interfaces |
Use Scenario: Securing PoE++ (IEEE 802.3bt) power pairs and data lines in outdoor network switches exposed to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional TVS on each 54 V power pair and differential data lanes to meet IEC 61000-4-5 Class 4 (12 Ω source). Use Value: Maintains signal integrity while clamping common-mode surges to <100 V, avoiding PHY IC damage or link dropouts. | Use Scenario: Protecting 72 V signaling circuits in train-mounted ECU backplanes subjected to traction system switching transients and track-side EMI. IC Role / Device Role / Timing Role: High-power TVS on 72 V supply rails and RS-485 communication ports to satisfy EN 50121-3-2 immunity requirements. Use Value: Delivers 36 kW pulse handling at elevated ambient temperatures (up to +150°C junction), ensuring reliability in enclosed cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | 600 W PPP rating, SMB package, RθJC ≈ 15 °C/W, lower IPP (100 A) | Suitable for consumer-grade or low-energy industrial I/O protection; insufficient for DO-160F Level 4 or multi-stroke lightning. | Select SMBJ48CA only when surge energy is limited to <100 J and thermal mass constraints prohibit PLAD mounting. |
| SMCJ48CA | 1500 W PPP rating, SMC package, RθJC ≈ 3.5 °C/W, IPP = 215 A | Valid for ISO 7637-2 Pulse 5 and IEC 61000-4-5 Class 3, but lacks DO-160F Waveform 4 Level 4 validation and 36 kW capability. | Choose SMCJ48CA for cost-sensitive automotive ECUs where full DO-160F compliance is not required. |
Compared with SMBJ48CA and SMCJ48CA, the MPLAD36KP48CAE3 provides 24× and 24× higher peak pulse power respectively, enables direct thermal coupling via metal base, and is the only option qualified for RTCA DO-160F Section 22 multi-stroke lightning-making it essential for certified avionics and high-reliability transportation systems.
Availability
MPLAD36KP48CAE3 is available at Aetrix Electronics and suitable for aerospace power entry, automotive ECU load dump protection, and industrial Ethernet switch surge hardening requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD36KP48CAE3 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The MPLAD series belongs to Microsemi's high-power surface-mount TVS portfolio, engineered specifically for mission-critical surge protection where multi-kilowatt transient energy, thermal robustness, and aviation-grade qualification are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP48CAE3 at its rated peak pulse current?
The MPLAD36KP48CAE3 has a maximum clamping voltage (VC) of 77.4 V when subjected to its rated peak pulse current of 466 A under the standard 10/1000 μs waveform. This value is measured per Figure 3 in the RF01216 datasheet and ensures downstream components see voltage stress well below their absolute maximum ratings during surge events.
Does MPLAD36KP48CAE3 require special PCB layout considerations?
Yes - the MPLAD36KP48CAE3 requires a dedicated thermal pad on the PCB matching the metal base dimensions (12.32 × 10.54 mm) with multiple thermal vias to inner ground planes. The cathode (metal base) must be soldered directly to this pad; inadequate copper area or missing vias will cause junction temperature exceedance and premature failure during repetitive surges.
Is MPLAD36KP48CAE3 compliant with AEC-Q101 for automotive use?
Yes, the MPLAD36KP48CAE3 is tested in accordance with AEC-Q101 requirements for discrete semiconductors. This includes stress tests for high-temperature operating life, temperature cycling, and surge robustness - confirming suitability for under-hood automotive applications such as engine control modules and battery management systems.
How does the "CA" suffix in MPLAD36KP48CAE3 indicate device polarity?
The "CA" suffix explicitly denotes a bidirectional configuration: the device clamps symmetrically for both positive and negative transients. Unlike unidirectional "A" variants (cathode on base, anode on top), the CA version has identical V(BR) and VC characteristics in either polarity, making it ideal for AC-coupled or floating-bus applications like RS-485 or Ethernet data lines.
Can MPLAD36KP48CAE3 be used for IEC 61000-4-5 Class 5 testing with 42 Ω source impedance?
Yes - the MPLAD36KP48CAE3 is explicitly listed in the RF01216 datasheet for IEC 61000-4-5 Class 5 secondary lightning protection with 42 Ω source impedance in short-distance configurations. Its 36 kW rating and low clamping voltage ensure compliance without additional series impedance or derating.
MPLAD36KP48CAE3 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):
- 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:
- 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
MPLAD36KP48CAE3 FAQ
1.How can I place an order for MPLAD36KP48CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP48CAE3 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 MPLAD36KP48CAE3 reliable?
The price and inventory of MPLAD36KP48CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP48CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP48CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP48CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP48CAE3?
MPLAD36KP48CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP48CAE3 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 MPLAD36KP48CAE3?
For technical support, including MPLAD36KP48CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP48CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP48CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP48CAE3 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 MPLAD36KP48CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP48CAE3?
All MPLAD36KP48CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP48CAE3, 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 MPLAD36KP48CAE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP48CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP48CAE3 Tags
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