My Inquiry
My Account
Microchip Technology MPLAD36KP70AE3
- Part No.:
- MPLAD36KP70AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP70AE3.pdf
- Description:
- TVS DIODE 70VWM 113VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,444
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPLAD36KP70AE3 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 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤113 V at 319 A, and operates with a 70 V reverse standoff voltage (VWM), meeting RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP70AE3 datasheet, MPLAD36KP70AE3 pinout, MPLAD36KP70AE3 application, or MPLAD36KP70AE3 equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant matte-tin plating, UL94V-0 void-free epoxy package, and verified compliance with IEC 61000-4-2/4-4/4-5 and RTCA/DO-160F Waveform 4 & 5A pin-injection levels.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp fast-rising transients, with a specified breakdown voltage range of 77.8–86.0 V at 5 mA and a maximum clamping voltage of 113 V at 319 A (10/1000 μs). Its low 1.0 °C/W RθJC enables effective heat transfer to a heatsink or PCB copper plane under high-duty-cycle surge conditions.
It supports both standalone secondary lightning protection per IEC 61000-4-5 (with 2 Ω, 12 Ω, and 42 Ω source impedances) and aircraft-specific pin injection immunity up to Level 5 (Waveform 4, 6.4/69 μs) and Level 4 (Waveform 5A, 40/120 μs), with temperature derating guidance provided in MicroNote 132.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated surge energy without failure in single-event or low-duty-cycle applications |
| Reverse Standoff Voltage (VWM) | 70 V - maximum continuous DC or peak AC operating voltage before clamping initiates |
| Clamping Voltage (VC) | 113 V @ 319 A - limits downstream circuit voltage during worst-case surge, enabling robust IC-level protection |
| Breakdown Voltage (V(BR)) | 77.8–86.0 V @ 5 mA - defines precise avalanche onset threshold for predictable turn-on behavior |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct mounting to heatsink or large copper pour for thermal management in high-reliability designs |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required prior to reflow, simplifying SMT assembly |
| RoHS Compliance | e3 marking - lead-free matte-tin terminal plating compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - surface-mount, metal-base thermoset epoxy case (UL94V-0), cathode on metal backside (bottom), dimensions 12.32 × 10.54 × 5.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top side) | Input/Line terminal | Connected to protected line; current flows into device during forward surge (e.g., load dump) |
| Cathode (metal base) | Ground/reference terminal | Must be soldered to large copper area or heatsink for thermal conduction and low-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT construction | Enables high-power surge protection in space-constrained avionics and automotive ECUs without through-hole mounting |
| Wafer and assembly lot traceability | Supports AS9100 and MIL-PRF-19500 upscreening for aerospace-grade reliability and failure analysis |
| Full surge testing per spec | Every production lot tested to 1000 A (equipment-limited), ensuring consistent 36 kW capability across batches |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for aircraft pin-injection immunity up to Level 5 (6.4/69 μs) and Level 4 (40/120 μs) per revision F |
| IEC 61000-4-5 Class 5 support | Meets highest secondary lightning immunity (42 Ω source) for long-distance wiring in industrial control cabinets |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight-critical avionics modules exposed to lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed at board edge, clamping induced transients before they reach DC-DC converters and microcontrollers. Use Value: Enables compliance with multi-stroke lightning standard using a single surface-mount component, eliminating need for bulky hybrid protectors. | Use Scenario: Guarding 12 V battery-fed ECU power rails against load dump transients (ISO 16750-2, 12 V system) and alternator switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and upstream fuse, absorbing >36 kW energy within 1 ms. Use Value: Prevents latch-up or destruction of MCU and CAN transceivers during 120 V/400 ms load dump events without derating. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Safeguarding 72 V DC bus inputs in variable-frequency drives subjected to IEC 61000-4-5 surge coupling from nearby contactor switching. IC Role / Device Role / Timing Role: Secondary surge protector mounted directly at bus entry point, coordinated with upstream MOVs for staged clamping. Use Value: Limits transient overshoot to <113 V, preserving gate drivers and isolated feedback components rated for 125 V absolute max. | Use Scenario: Protecting 70 V signaling lines in EN 50121-4-compliant railway track-side electronics from induced surges during lightning strikes. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MPLAD36KP70CA) used in differential pairs; unidirectional MPLAD36KP70AE3 applied to single-ended supply rails. Use Value: Achieves IEC 61000-4-5 Class 4 immunity (2 Ω source) with 130 V clamping ceiling, matching EN 50121-4 voltage tolerance envelopes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A | 600 W PPP rating, 1.5 kW max; 70 V VWM, but only 113 V VC @ 53.3 A - 6× lower surge current capacity | Designed for consumer-grade board-level ESD/surge; insufficient for DO-160 or ISO 16750-2 load dump | Select SMBJ70A only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary |
| SMCJ70A | 1500 W PPP rating, 70 V VWM, 113 V VC @ 133 A - 2.4× lower peak current than MPLAD36KP70AE3's 319 A | Common in industrial PLC I/O modules; lacks DO-160F Waveform 4/5A validation and MIL-PRF-19500 screening options | Choose SMCJ70A for non-aerospace applications requiring higher surge margin than SMBJ but not full 36 kW capability |
Compared with SMBJ70A and SMCJ70A, the MPLAD36KP70AE3 provides six-fold and 2.4-fold higher peak pulse current handling respectively, validated clamping performance under aircraft-specific waveforms, and optional high-reliability screening-making it uniquely suited for mission-critical aerospace and heavy-duty automotive power protection.
Availability
MPLAD36KP70AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power systems, and industrial motor drive DC bus protection requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP70AE3 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 was developed specifically for high-power, surface-mount transient suppression in safety-critical platforms where legacy through-hole TVS devices could not meet size, thermal, or qualification requirements.
FAQ
What is the clamping voltage of the MPLAD36KP70AE3 at its rated peak pulse current?
The MPLAD36KP70AE3 has a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current of 319 A under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and is measured per JEDEC standards, ensuring predictable overvoltage limiting for downstream circuitry in the MPLAD36KP70AE3 design.
Is the MPLAD36KP70AE3 suitable for RTCA DO-160F Section 22 lightning testing?
Yes, the MPLAD36KP70AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Its 36 kW peak pulse power rating, low thermal resistance, and documented performance under Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) confirm suitability for aircraft power and signal line protection per MPLAD36KP70AE3 specifications.
Does the MPLAD36KP70AE3 require special PCB layout considerations?
Yes - the MPLAD36KP70AE3 requires a minimum 11.94 mm × 5.85 mm copper pad (per datasheet PAD LAYOUT) on the bottom side for the cathode metal base to ensure thermal conduction and low-inductance grounding. Trace inductance must be minimized between the anode and protected line, and the device must be placed at the board edge for optimal surge shunting in the MPLAD36KP70AE3 implementation.
What does the "E3" suffix indicate in MPLAD36KP70AE3?
"E3" denotes RoHS-compliant matte-tin plating on the terminals of the MPLAD36KP70AE3, conforming to EU Directive 2011/65/EU. It replaces traditional tin-lead finishes and is qualified for standard SnPb and lead-free reflow profiles per MIL-STD-750 Method 2026, ensuring reliable solderability without post-process cleaning for the MPLAD36KP70AE3.
Can the MPLAD36KP70AE3 be used in bidirectional configurations?
No - the MPLAD36KP70AE3 is unidirectional, with polarity marked by the cathode on the metal base. For bidirectional operation, the functionally matched MPLAD36KP70CA variant must be selected. The "A" suffix in MPLAD36KP70AE3 explicitly indicates unidirectional construction, and substituting it in AC-coupled or differential lines would result in improper clamping behavior.
MPLAD36KP70AE3 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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 319A
- 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
MPLAD36KP70AE3 FAQ
1.How can I place an order for MPLAD36KP70AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP70AE3 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 MPLAD36KP70AE3 reliable?
The price and inventory of MPLAD36KP70AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP70AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP70AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP70AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP70AE3?
MPLAD36KP70AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP70AE3 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 MPLAD36KP70AE3?
For technical support, including MPLAD36KP70AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP70AE3 requirements.
6.How does Aetrix verify that MPLAD36KP70AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP70AE3 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 MPLAD36KP70AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP70AE3?
All MPLAD36KP70AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP70AE3, 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 MPLAD36KP70AE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP70AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP70AE3 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…
