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Microchip Technology MAPLAD36KP170CAE3
- Part No.:
- MAPLAD36KP170CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP170CAE3.pdf
- Description:
- TVS DIODE 170VWM 275VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,169
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Product details
Overview
MAPLAD36KP170CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 170 V reverse standoff voltage (VWM), clamps to ≤275 V at 131 A peak pulse current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP170CAE3 datasheet, MAPLAD36KP170CAE3 pinout, MAPLAD36KP170CAE3 application, or MAPLAD36KP170CAE3 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 & 5A, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, with bidirectional symmetry enabling protection against both polarities of surge events. Its low thermal resistance (RθJC = 1.0 °C/W) and void-free UL94V-0 epoxy package support high-reliability mounting on FR4 PCBs with controlled case temperature.
It is characterized by a breakdown voltage range of 189–209 V at 5 mA, maximum clamping voltage of 275 V at 131 A (10/1000 μs), and standby leakage current ≤10 μA at 170 V - all specified at 25°C and validated per AEC-Q101 and MIL-PRF-19500 screening options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - enables single-device suppression of severe lightning-induced surges without cascading failure |
| Reverse Standoff Voltage (VWM) | 170 V - sets maximum continuous operating voltage before clamping activation; matches 150 V nominal DC bus with margin |
| Clamping Voltage (VC) | 275 V max @ IPP = 131 A - limits downstream voltage stress to safe levels for 200 V-rated components |
| Breakdown Voltage (V(BR)) | 189–209 V @ 5 mA - ensures reliable turn-on above VWM while avoiding false triggering |
| Thermal Resistance (RθJC) | 1.0 °C/W - allows efficient heat transfer to heatsink or copper pour, critical for repetitive surge duty |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and simplifies SMT assembly logistics |
| RoHS Compliance | e3 suffix - matte-tin plating compliant with EU RoHS Directive 2011/65/EU and lead-free reflow profiles |
Pinout & Package
MAPLAD36KP170CAE3 uses a surface-mount PLAD package with two terminals: anode and cathode formed on opposite sides of the metal base. The cathode is the metal base underside (package bottom); polarity marking applies only to unidirectional variants - bidirectional devices like MAPLAD36KP170CAE3 have symmetric terminal function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity event) | Connects to protected line; conducts during positive overvoltage to shunt energy to ground |
| Cathode | Transient current return path (negative polarity event) | Mounted to metal base; serves as common reference for bidirectional clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetrical clamping for AC lines or floating DC buses without polarity constraints |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for aircraft pin-injection immunity up to Level 5 (Waveform 4: 170 V VWM supports 300 V level; Waveform 5A: supports 38 V level) |
| AEC-Q101 qualified | Qualified for automotive underhood applications including load dump and alternator transients |
| IEC 61000-4-5 Class 5 support (42 Ω, 12 Ω, 2 Ω) | Meets highest industrial lightning immunity tier across multiple source impedances without redesign |
| Low-profile thermally optimized package | 12.32 × 10.54 × 5.33 mm body with 1.0 °C/W RθJC enables compact placement near connectors or I/O ports |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Protection of 28 V DC power inputs on flight control computers subjected to multi-stroke lightning per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp at board-level interface, activated within <5 ns to limit voltage excursion. Use Value: Prevents latch-up or gate oxide damage in downstream DC/DC converters rated for ≤200 V input. |
Use Scenario: Load dump transient suppression on 12 V engine management system power rail per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: High-power crowbar element placed upstream of LDO regulators and microcontrollers. Use Value: Clamps 120 V/350 ms transients to <275 V, preserving 3.3 V/5 V logic supply integrity without derating. |
| Industrial Motor Drive I/O Port | Railway Signaling Interface |
|
Use Scenario: Surge protection on RS-485 communication lines exposed to induced lightning in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional line protector between transceiver and field wiring, referenced to chassis ground. Use Value: Withstands repeated 4 kV EFT bursts (IEC 61000-4-4) and 10/1000 μs surges up to 36 kW without parameter shift. |
Use Scenario: Secondary protection for 72 V signaling circuits in train-mounted control units per EN 50121-3-2. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS on track-side interface cards handling analog sensor inputs. Use Value: 170 V VWM aligns with 72 V nominal × √2 + margin, ensuring no conduction during normal operation while clamping fast transients. |
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 SMAJ170CA | Lower PPP rating (400 W vs. 36,000 W); same VWM and bidirectional polarity; SMC package (smaller footprint, higher RθJA) | Not suitable for DO-160 lightning or IEC 61000-4-5 Class 5; limited to low-energy ESD/EFT | Select only for cost-sensitive consumer-grade interfaces where surge energy is below 100 J |
| Vishay V275LA20AP | MOV-based; 275 V RMS AC rating; no defined clamping voltage; degrades with repeated surges; larger TO-218 package | Used in AC mains input stages; not rated for DO-160 or AEC-Q101; unsuitable for precision DC rail protection | Choose for AC line filtering where voltage tolerance >±20% is acceptable and lifetime surge count is low |
Compared with SMAJ170CA and V275LA20AP, MAPLAD36KP170CAE3 provides three orders of magnitude higher surge power handling, guaranteed clamping performance over lifetime, and qualification for mission-critical aerospace and automotive environments - making it irreplaceable for high-reliability DC power rail protection.
Availability
MAPLAD36KP170CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial motor drive systems requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP170CAE3 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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP170CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning resilience and DO-160 compliance in safety-critical airborne and vehicular platforms.
FAQ
What is the maximum clamping voltage of MAPLAD36KP170CAE3 at its rated peak pulse current?
The MAPLAD36KP170CAE3 has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak pulse current of 131 A under the standard 10/1000 μs waveform. This value is measured at 25°C and guarantees that downstream circuitry sees no more than 275 V during a full-power surge event, protecting 300 V-rated components.
Does MAPLAD36KP170CAE3 require a heatsink for continuous operation?
MAPLAD36KP170CAE3 does not require an external heatsink for single-event surge suppression, but thermal management is essential for repetitive surges. Its RθJC of 1.0 °C/W means junction temperature rise depends directly on PCB copper area and airflow; Microsemi recommends mounting on ≥250 mm² of 2-oz copper with thermal vias for >1 Hz repetition rates.
Is MAPLAD36KP170CAE3 compatible with lead-free reflow soldering processes?
Yes, MAPLAD36KP170CAE3 carries the e3 RoHS-compliant marking and uses annealed matte-tin plating qualified per MIL-STD-750 Method 2026. It supports JEDEC J-STD-020D-compliant lead-free reflow profiles with peak temperatures up to 260°C for 10 seconds, matching standard SAC305 process windows.
How does MAPLAD36KP170CAE3 meet RTCA DO-160F Section 22 lightning requirements?
MAPLAD36KP170CAE3 meets RTCA DO-160F Section 22 multi-stroke lightning testing by sustaining 36 kW peak pulse power at 10/1000 μs without parameter degradation. Its low clamping voltage, fast response (<5 ns), and thermal robustness allow it to pass Level 4 and Level 5 Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) tests when mounted per recommended pad layout.
Can MAPLAD36KP170CAE3 be used in place of unidirectional TVS diodes in DC systems?
Yes, MAPLAD36KP170CAE3 can replace unidirectional TVS diodes in DC systems where bidirectional protection is acceptable or required - for example, in floating supplies or systems subject to reverse-polarity faults. However, its bidirectional symmetry results in identical clamping for both polarities, unlike unidirectional parts that conduct only in reverse bias.
MAPLAD36KP170CAE3 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):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 131A
- 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
MAPLAD36KP170CAE3 FAQ
1.How can I place an order for MAPLAD36KP170CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP170CAE3 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 MAPLAD36KP170CAE3 reliable?
The price and inventory of MAPLAD36KP170CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP170CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP170CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP170CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP170CAE3?
MAPLAD36KP170CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP170CAE3 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 MAPLAD36KP170CAE3?
For technical support, including MAPLAD36KP170CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP170CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP170CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP170CAE3 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 MAPLAD36KP170CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP170CAE3?
All MAPLAD36KP170CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP170CAE3, 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 MAPLAD36KP170CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP170CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP170CAE3 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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