My Inquiry
My Account
Microchip Technology MPLAD18KP90AE3
- Part No.:
- MPLAD18KP90AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP90AE3.pdf
- Description:
- TVS DIODE 9VWM 15.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,824
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPLAD18KP90AE3 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 ≤146 V under 1000 A impulse, and features 90 V reverse standoff voltage (VWM), 100–111 V breakdown voltage (V(BR)), and 0.7 °C/W junction-to-case thermal resistance.
For engineers reviewing the MPLAD18KP90AE3 datasheet, MPLAD18KP90AE3 pinout, MPLAD18KP90AE3 application, or MPLAD18KP90AE3 equivalent, this device is selected for RTCA DO-160F Level 4 pin injection protection, IEC 61000-4-5 Class 1–5 secondary lightning immunity, and high-reliability load dump suppression where low-profile SMT mounting and traceable lot screening are required.
Technical Context
This TVS operates as a silicon avalanche diode with unidirectional polarity, where the cathode is the metal base (package bottom). Its clamping response time is <100 ps, enabling effective suppression of fast-rising transients such as ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5).
It is rated for junction temperatures from –55 °C to +150 °C, supports steady-state dissipation up to 2.5 W at 25 °C ambient, and exhibits a temperature coefficient of breakdown voltage (αV(BR)) of +109 mV/°C - critical for thermal stability in high-temperature avionics enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device protection against aircraft lightning multi-stroke events per RTCA DO-160 Section 22. |
| Reverse Standoff Voltage (VWM) | 90 V - maximum continuous DC or RMS operating voltage before clamping initiates; matches 72 V nominal 28 VDC aircraft bus derated for transients. |
| Clamping Voltage (VC) | ≤146 V @ 1000 A - limits downstream circuit stress during worst-case surge; verified per Figure 3 test waveform. |
| Breakdown Voltage (V(BR)) | 100–111 V @ I(BR) - defines onset of avalanche conduction; ensures reliable turn-on margin above VWM. |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - allows efficient heat transfer to PCB copper pour or heatsink, supporting repeated surge duty cycles with <0.05% impulse repetition rate. |
| Standby Current (ID) | ≤10 μA @ 90 V - negligible leakage in standby, preserving battery-backed or low-power monitoring circuits. |
| Moisture Sensitivity Level | Level 1 (per J-STD-020B) - no dry pack or baking required prior to reflow, simplifying SMT assembly logistics. |
Pinout & Package
Package: Surface-mount PLAD (Power Leadless Array Device) with void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, and metal base cathode termination. Dimensions: 12.32 × 10.54 × 5.33 mm (L × W × H), weight ≈1 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry point | Connected to protected line (e.g., aircraft 28 VDC bus); requires minimum 10 mm² copper pour for thermal management. |
| Cathode (metal base) | Current return path & thermal interface | Must be soldered directly to large PCB ground plane or heatsink; serves as primary thermal conduction path (RθJC = 0.7 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| High-reliability wafer & assembly lot traceability | Enables full pedigree tracking for DO-160-certified avionics programs and MIL-PRF-19500 upscreening options (M, MA, MX, MXL levels). |
| RTCA DO-160F Waveform 4 compliance (Level 4) | Validated for 6.4/69 μs pin injection transients at 25 °C - meets structural lightning coupling requirements for flight-critical sensors and controllers. |
| IEC 61000-4-5 secondary lightning protection | Rated for Class 1–5 with 42 Ω source impedance - supports system-level immunity testing without external series impedance networks. |
| Low-profile SMT footprint | Enables placement in space-constrained avionics modules while maintaining >18 kW surge capability - eliminates through-hole mounting and associated board drilling. |
| 3σ lot norm screening on ID | Ensures consistent low-leakage performance across production lots - critical for battery-operated remote monitoring nodes in industrial IoT gateways. |
Applications
| Aerospace Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting flight control computers and inertial measurement units (IMUs) connected to the 28 VDC main bus against induced lightning currents per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS placed at bus entry point; clamps within <100 ps to limit voltage excursion to ≤146 V during 1000 A surges. Use Value: Eliminates need for discrete MOV+gas tube hybrid designs, reducing BOM count and PCB area while meeting Level 4 pin injection requirements. | Use Scenario: Safeguarding engine control units (ECUs) and ADAS domain controllers during alternator load dump events in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Primary surge clamp on battery feed line; absorbs 18,000 W energy pulses with <0.05% duty factor per ISO 7637-2 Pulse 5a. Use Value: Withstands repeated 120 V/350 ms transients without degradation, validated per AEC-Q101 stress testing. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding gate drivers and current sensors on the DC link of 400 V traction inverters from switching-induced voltage spikes and EFT bursts. IC Role / Device Role / Timing Role: Fast-clamping TVS mounted adjacent to IGBT module terminals; leverages 0.7 °C/W RθJC for direct heatsink coupling. Use Value: Prevents false triggering and latch-up in isolated gate drivers by limiting transients to <146 V, improving system uptime in harsh factory environments. | Use Scenario: Securing Ethernet and RS-485 communication ports on trackside signaling relays exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT); handles residual energy with precise 90 V VWM alignment to 75 V telecom interface rails. Use Value: Achieves IEC 61000-4-5 Class 4 immunity (4 kV, 2 Ω source) without compromising signal integrity on 10 Mbps data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | 600 W PPP rating, DO-214AA package, RθJA = 40 °C/W, no AEC-Q101 or DO-160 qualification. | Limited to consumer/industrial grade; unsuitable for aviation or automotive safety-critical systems. | Select SMBJ90A only for cost-sensitive non-safety applications where surge energy remains below 1 kA. |
| SMCJ90A | 1500 W PPP rating, DO-214AB package, RθJA = 25 °C/W, qualified to AEC-Q101 but not DO-160. | Supports automotive ECUs but lacks RTCA DO-160F Level 4 validation and 18 kW energy handling. | Choose SMCJ90A for automotive Tier 2 suppliers requiring AEC-Q101 compliance without aircraft certification. |
Compared with SMBJ90A and SMCJ90A, the MPLAD18KP90AE3 provides 30× higher peak pulse power, certified DO-160F Level 4 immunity, and metal-base thermal architecture - making it the sole option for aerospace-grade lightning protection where single-device 18 kW clamping and lot-traceable reliability are mandatory.
Availability
MPLAD18KP90AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU, and industrial motor drive applications requiring stable component supply, full lot traceability, and long-term lifecycle support.
Supply support for MPLAD18KP90AE3 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, radiation-tolerant, and timing-critical solutions for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-energy transient suppression in safety-critical platforms - emphasizing low thermal resistance, DO-160F compliance, and MIL-PRF-19500 upscreening readiness.
FAQ
What is the clamping voltage specification for MPLAD18KP90AE3 under maximum rated surge current?
The MPLAD18KP90AE3 has a maximum clamping voltage (VC) of 146 V when subjected to a 1000 A peak impulse current at the standard 10/1000 μs waveform. This value is guaranteed per the manufacturer's test conditions in RF01215 Rev B and is critical for ensuring downstream ICs remain within absolute maximum voltage ratings during lightning transients.
Does MPLAD18KP90AE3 meet AEC-Q101 qualification requirements for automotive use?
Yes, MPLAD18KP90AE3 is tested in accordance with AEC-Q101 requirements, as explicitly stated in the source documentation. This qualification validates its robustness for automotive load dump and EFT protection, though its primary design emphasis remains on RTCA DO-160F compliance for aerospace applications.
How is polarity identified on the MPLAD18KP90AE3 package?
The MPLAD18KP90AE3 is a unidirectional TVS with the cathode located on the metal base (bottom surface) of the package. The top surface pad is the anode. Polarity marking follows standard convention: the cathode side must be connected to system ground or the lower-potential rail to ensure proper avalanche conduction during overvoltage events.
What thermal management practices are recommended for MPLAD18KP90AE3 in high-duty-cycle applications?
For sustained surge operation, the MPLAD18KP90AE3 requires direct thermal coupling of its metal base cathode to a ≥25 cm² copper pour or external heatsink. Its 0.7 °C/W RθJC demands minimal interfacial thermal resistance; solder voiding must be minimized, and PCB layout must avoid thermal isolation. Derating curves in Figure 3 apply when case temperature exceeds 100 °C.
Is MPLAD18KP90AE3 RoHS compliant, and what does the 'E3' suffix indicate?
Yes, the 'E3' suffix in MPLAD18KP90AE3 denotes full RoHS compliance per EU Directive 2011/65/EU, with annealed matte-tin plating replacing traditional tin-lead terminations. This ensures compatibility with lead-free reflow profiles (up to 260 °C for 10 seconds) and eliminates hazardous substances without compromising solderability or surge performance.
MPLAD18KP90AE3 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 1169A (1.169kA)
- 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
MPLAD18KP90AE3 FAQ
1.How can I place an order for MPLAD18KP90AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP90AE3 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 MPLAD18KP90AE3 reliable?
The price and inventory of MPLAD18KP90AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP90AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP90AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP90AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP90AE3?
MPLAD18KP90AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP90AE3 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 MPLAD18KP90AE3?
For technical support, including MPLAD18KP90AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP90AE3 requirements.
6.How does Aetrix verify that MPLAD18KP90AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP90AE3 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 MPLAD18KP90AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP90AE3?
All MPLAD18KP90AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP90AE3, 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 MPLAD18KP90AE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP90AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP90AE3 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…
