My Inquiry
My Account
Microchip Technology MPLAD18KP36AE3
- Part No.:
- MPLAD18KP36AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP36AE3.pdf
- Description:
- TVS DIODE 36VWM 58.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,255
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPLAD18KP36AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤58.1 V under 310 A peak impulse current, and features 36 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (40.0–44.2 V). Its low-profile thermally optimized package enables robust lightning protection per RTCA DO-160 Section 22 and secondary surge suppression per IEC 61000-4-5.
For engineers reviewing the MPLAD18KP36AE3 datasheet, MPLAD18KP36AE3 pinout, MPLAD18KP36AE3 application, or MPLAD18KP36AE3 equivalent, this device is selected for high-reliability DC bus protection where multi-stroke lightning immunity, low thermal resistance (RθJC = 0.7 °C/W), and RoHS-compliant solderability are critical - especially in avionics power distribution units and 24–48 V vehicle electronics.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, triggered by avalanche breakdown above its specified V(BR) range. Its metal-base cathode construction provides direct thermal path to PCB copper, enabling high-power dissipation without external heatsinking when mounted on FR4 with recommended pad layout.
It meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. The device is characterized for 10/1000 μs waveform compliance, with clamping response time <100 ps and temperature coefficient of breakdown voltage αV(BR) = 40 mV/°C - ensuring predictable derating across -55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - sustains full-rated surge energy without failure in single-event or low-duty-cycle (<0.05%) applications |
| Reverse Standoff Voltage (VWM) | 36 V - maximum continuous DC or peak AC voltage the device blocks without conduction; matches 24–32 V nominal bus systems |
| Breakdown Voltage (V(BR)) | 40.0–44.2 V @ I(BR) - defines precise avalanche initiation threshold; ensures reliable turn-on before downstream component damage |
| Max Clamping Voltage (VC) | 58.1 V @ IPP = 310 A - limits voltage seen by protected circuit during worst-case surge; enables safe margin for 48 V-rated components |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to PCB ground plane; critical for repeated surge handling without thermal runaway |
| Standby Current (ID) | 10 μA @ VWM - negligible leakage at rated voltage; avoids system power loss or false triggering in low-current control circuits |
| Surge Rating Standard | RTCA DO-160F Waveform 4 Level 4 & IEC 61000-4-5 Class 1–4 (42 Ω source) - validated for aircraft and industrial secondary lightning protection |
Pinout & Package
Surface-mount package with two terminals: anode (top-side metallization) and cathode (exposed metal baseplate). Cathode side must be soldered directly to large copper area for thermal and electrical performance. Package conforms to PLAD outline with dimensions 12.32 × 10.54 × 5.33 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to line/pin being protected; carries surge current into device during clamping event |
| Cathode | Ground reference / return path | Exposed metal baseplate - must be soldered to thermal pad on PCB; serves as primary heat sink and low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW peak pulse rating | Enables single-device protection against severe lightning-induced transients without cascaded TVS stages |
| 0.7 °C/W RθJC | Reduces junction temperature rise by >70% vs. standard SMD TVS, supporting higher repetition rates in automotive load-dump scenarios |
| RoHS-compliant e3 matte-tin plating | Ensures compatibility with lead-free reflow profiles (260°C/10s) and eliminates tin whisker risk in long-life avionics |
| RTCA DO-160F Waveform 4 Level 4 compliance | Validated for pin-injection surge immunity in flight-critical systems - no additional filtering required for Level 4 certification |
| 3σ lot norm screening on ID | Guarantees standby current ≤10 μA across production lots - critical for battery-backed or ultra-low-power monitoring circuits |
Applications
| Aerospace Power Distribution | Automotive 24 V DC Bus |
|---|---|
Use Scenario: Protection of avionics power inputs against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping TVS on main 28 V DC bus feeding flight control computers and sensors. Use Value: Withstands multi-stroke lightning events (≥1000A, 10/1000 μs) without degradation, eliminating need for redundant protectors. |
Use Scenario: Load dump suppression in commercial truck alternator output circuits. IC Role / Device Role / Timing Role: Unidirectional TVS placed between alternator output and ECU power rail. Use Value: Clamps 120 V transients to ≤58.1 V within 100 ps, preventing damage to 48 V-rated microcontrollers and CAN transceivers. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Surge protection on DC link capacitors in variable-frequency drives exposed to switching transients. IC Role / Device Role / Timing Role: High-energy TVS connected across DC bus (+) and chassis ground. Use Value: 18 kW rating absorbs regenerative braking spikes and IGBT commutation noise without thermal saturation. |
Use Scenario: Secondary protection for 36 V signaling lines in railway trackside equipment subject to induced lightning currents. IC Role / Device Role / Timing Role: Bidirectional-capable variant used on isolated RS-485 data lines with common-mode surge exposure. Use Value: Meets IEC 61000-4-5 Class 4 (42 Ω source) with clamping below 60 V - preserves signal integrity during 4 kV surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36A | Lower PPP (400 W), smaller SMA package, RθJA = 40 °C/W, no DO-160 qualification | Suitable for consumer-grade 36 V circuits but lacks aerospace reliability screening and multi-stroke validation | Select only for cost-sensitive, non-safety-critical 36 V systems with single-event surge exposure |
| Vishay SM8S36A | Higher PPP (6600 W), DFN package, RθJC = 1.5 °C/W, AEC-Q101 qualified but not DO-160 tested | Meets automotive load dump (ISO 7637-2) but not certified for aircraft lightning standards | Preferred for automotive ECUs requiring higher surge count endurance than SMAJ, but insufficient for avionics certification |
Compared with MPLAD18KP36AE3, both alternatives offer lower peak power and lack RTCA DO-160F Waveform 4 Level 4 validation; neither achieves the 0.7 °C/W thermal resistance or metal-base thermal coupling needed for sustained multi-stroke operation in aerospace power systems.
Availability
MPLAD18KP36AE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive 24 V DC bus protection, and industrial motor drive DC link applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD18KP36AE3 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 ICs for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-energy transient suppression in mission-critical platforms where multi-stroke lightning immunity, thermal robustness, and qualification to RTCA DO-160 and MIL-PRF-19500 are mandatory design requirements.
FAQ
What is the clamping voltage of MPLAD18KP36AE3 at its rated peak pulse current?
The MPLAD18KP36AE3 has a maximum clamping voltage (VC) of 58.1 V at 310 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and ensures protected downstream components see no more than 58.1 V during worst-case surge events. The clamping performance is validated per Figure 3 in RF01215 Rev B.
Is MPLAD18KP36AE3 qualified for aerospace applications per RTCA DO-160?
Yes, MPLAD18KP36AE3 is explicitly listed for RTCA DO-160F Waveform 4 Level 4 pin injection testing (6.4/69 μs) and meets Section 22 lightning-induced transient requirements. Its qualification is documented in RF01215 Rev B, and it supports multi-stroke lightning standards essential for avionics power distribution units and flight control interfaces.
Does MPLAD18KP36AE3 require a heatsink for continuous operation?
No external heatsink is required for MPLAD18KP36AE3 when mounted per the recommended pad layout on FR4 PCB with ≥1 in² copper area under the cathode baseplate. Its 0.7 °C/W junction-to-case thermal resistance allows effective self-cooling; however, steady-state power dissipation is limited to 2.5 W at 25°C ambient, so it is intended for transient-only duty cycles.
What does the "E3" suffix indicate in MPLAD18KP36AE3?
"E3" denotes RoHS-compliant annealed matte-tin plating per J-STD-020B moisture sensitivity Level 1 - meaning no dry-pack requirement and full compatibility with lead-free reflow soldering at 260°C for 10 seconds. This distinguishes it from non-RoHS variants and confirms compliance with environmental directives for aerospace and industrial deployments.
How does the cathode configuration affect PCB layout for MPLAD18KP36AE3?
The cathode of MPLAD18KP36AE3 is the exposed metal baseplate, which must be soldered directly to a large thermal pad on the PCB. This pad serves dual functions: low-inductance return path for surge current and primary thermal interface. Layout deviations - such as small pads or thermal relief - degrade both clamping response and power handling, risking thermal failure during repeated surges.
MPLAD18KP36AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 310A
- Power - Peak Pulse:
- 18000W (18kW)
- 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
MPLAD18KP36AE3 FAQ
1.How can I place an order for MPLAD18KP36AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP36AE3 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 MPLAD18KP36AE3 reliable?
The price and inventory of MPLAD18KP36AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP36AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP36AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP36AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP36AE3?
MPLAD18KP36AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP36AE3 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 MPLAD18KP36AE3?
For technical support, including MPLAD18KP36AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP36AE3 requirements.
6.How does Aetrix verify that MPLAD18KP36AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP36AE3 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 MPLAD18KP36AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP36AE3?
All MPLAD18KP36AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP36AE3, 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 MPLAD18KP36AE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP36AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP36AE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
