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Microchip Technology MAPLAD36KP170CA
- Part No.:
- MAPLAD36KP170CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP170CA.pdf
- Description:
- TVS DIODE 170VWM 275VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,168
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Product details
Overview
MAPLAD36KP170CA 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 (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements for aircraft electronics.
For engineers reviewing the MAPLAD36KP170CA datasheet, MAPLAD36KP170CA pinout, MAPLAD36KP170CA application, or MAPLAD36KP170CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (with 2 Ω, 12 Ω, and 42 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 & 5A, and ESD/EFT robustness per IEC 61000-4-2/-4-4 - all in a low-profile thermoset epoxy package with metal-base thermal path.
Technical Context
This TVS operates as a voltage-clamped crowbar during transients, leveraging avalanche breakdown across its bidirectional silicon junction. Its 1.0 °C/W junction-to-case thermal resistance enables effective heat transfer to PCB copper or heatsink via the metal baseplate, critical for sustaining repeated 36 kW surges at ≤0.05% duty cycle.
It supports dual-standard compliance: RTCA DO-160F Level 5 pin injection (Waveform 4 up to 300 VWM, Waveform 5A up to 38 VWM) and IEC 61000-4-5 Class 5 secondary lightning protection (42 Ω source, short-distance configuration). Standby leakage is limited to 10 μA at 170 V, ensuring minimal system loading during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated lightning surge energy without failure |
| Reverse Standoff Voltage (VWM) | 170 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Clamping Voltage (VC) | 275 V @ IPP = 131 A - limits downstream circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to PCB copper or heatsink for multi-pulse reliability |
| Surge Current (IPP) | 131 A @ 10/1000 μs - quantifies maximum single-event current handling capability |
| Standby Leakage Current | 10 μA @ 170 V - negligible power loss and signal interference in standby mode |
| Operating Temperature Range | −55 °C to +150 °C - qualified for extended-range aerospace and under-hood automotive use |
Pinout & Package
MAPLAD36KP170CA uses a surface-mount PLAD package with a metal baseplate serving as the cathode terminal for both polarities (bidirectional symmetry). The package features void-free UL94V-0 thermosetting epoxy body and matte-tin plating compatible with lead-free reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Baseplate | Cathode (common terminal) | Primary thermal path and electrical return; must be soldered to large copper area for thermal management |
| Top Surface Pad | Anode (bidirectional active junction) | Connects to protected line; symmetric conduction enables polarity-agnostic placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC lines or differential buses without polarity constraints |
| 1.0 °C/W RθJC | Supports >1000 surge cycles at rated PPP when mounted on ≥2 oz copper with recommended pad layout |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4 (≤300 VWM) and Level 5 (≤38 VWM) pin-injection immunity in avionics |
| IEC 61000-4-5 Class 5 rating (42 Ω source) | Meets stringent secondary lightning protection for aircraft interior systems |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life limitations for SMT assembly |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight control computers subjected to lightning-induced transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed at board edge before DC-DC converters and microcontrollers. Use Value: Clamps 36 kW surges to ≤275 V while maintaining <10 μA leakage, preserving system uptime and meeting FAA airworthiness requirements. |
Use Scenario: Guarding 12 V supply rails in diesel engine ECUs against load dump spikes exceeding 120 V. IC Role / Device Role / Timing Role: Secondary surge protector downstream of primary TVS, absorbing residual energy after initial clamp. Use Value: Withstands 131 A pulses at 10/1000 μs and operates reliably from −40 °C to +150 °C, ensuring cold-cranking and under-hood durability. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Safeguarding 200–250 V DC bus links in variable-frequency drives exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: Fast-response voltage limiter that activates within <5 ns to prevent IGBT gate driver damage. Use Value: 275 V clamping voltage ensures MOSFET/IGBT VDS stress remains below 80% of rating during 36 kW events. |
Use Scenario: Protecting RS-485 communication ports in trackside signaling units from EFT bursts and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional line protector on differential data pairs, compliant with IEC 61000-4-4 (EFT) and -4-5 (surge). Use Value: Symmetric clamping maintains signal integrity on both A/B lines while limiting common-mode voltage to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | 600 W PPP rating, 170 V VWM, SMB package, RθJA = 110 °C/W | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160 multi-stroke validation | Select when cost-sensitive, low-energy environments require RoHS-compliant SMB footprint |
| SMCJ170CA | 1500 W PPP rating, same VWM, SMC package, RθJA = 55 °C/W | Cannot meet 36 kW PPP or DO-160 Level 5 pin injection; lacks metal-base thermal path | Choose for industrial controls needing higher energy than SMBJ but lower than MAPLAD-class requirements |
Compared with SMBJ170CA and SMCJ170CA, MAPLAD36KP170CA provides 60× and 24× higher peak pulse power respectively, validated thermal performance for repeated surges, and certified compliance with aviation-grade transient standards - making it irreplaceable in safety-critical airborne and high-reliability automotive systems.
Availability
MAPLAD36KP170CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP170CA 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-voltage, and surge-tolerant components.
The MAPLAD36KP170CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and mission-critical transient immunity in aircraft, rail, and heavy-vehicle electronics.
FAQ
What is the clamping voltage of MAPLAD36KP170CA at its rated peak pulse current?
The MAPLAD36KP170CA has a maximum clamping voltage (VC) of 275 V at its peak pulse current (IPP) of 131 A under 10/1000 μs waveform conditions. This value is measured per standard test methods and ensures downstream components experience voltage stress well below their absolute maximum ratings during surge events. The MAPLAD36KP170CA achieves this clamping performance while maintaining bidirectional symmetry and low thermal resistance.
Is MAPLAD36KP170CA certified for RTCA DO-160 lightning testing?
Yes, MAPLAD36KP170CA is validated for RTCA DO-160 Section 22 multi-stroke lightning testing and supports pin-injection immunity per DO-160F Waveform 4 (Level 4 up to 300 VWM) and Waveform 5A (Level 5 up to 38 VWM). These qualifications are documented in Microsemi's RF01216 datasheet and apply directly to the MAPLAD36KP170CA variant. The MAPLAD36KP170CA meets these standards due to its 36 kW power handling and sub-5 ns response time.
How does the metal baseplate of MAPLAD36KP170CA function electrically and thermally?
The metal baseplate of MAPLAD36KP170CA serves as the cathode terminal for both directions in its bidirectional configuration and provides the primary thermal conduction path from junction to PCB. With a specified RθJC of 1.0 °C/W, it requires soldering to a large copper area per the recommended pad layout to dissipate heat from repeated 36 kW surges. Electrically, the baseplate must be connected to system ground or common reference to complete the clamping path. This dual-role design is integral to the MAPLAD36KP170CA's high-reliability performance.
What are the IEC 61000-4-5 compliance levels supported by MAPLAD36KP170CA?
MAPLAD36KP170CA supports IEC 61000-4-5 Class 1–5 secondary lightning protection with multiple source impedances: 42 Ω (Class 1–5, short distance), 12 Ω (Class 1–4), and 2 Ω (Class 2–4). For example, at 42 Ω source impedance, MAPLAD36KP170CA qualifies for Class 5 - the highest severity level - enabling use in aircraft interior wiring where stringent surge immunity is mandated. These ratings are explicitly assigned to MAPLAD36KP170CA in the official datasheet tables.
Does MAPLAD36KP170CA require moisture-sensitive handling or dry packing?
No, MAPLAD36KP170CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry pack or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield loss from moisture-related popcorning. The MAPLAD36KP170CA achieves MSL-1 through hermetic-equivalent encapsulation using void-free UL94V-0 thermosetting epoxy, confirmed in the RF01216 datasheet.
MAPLAD36KP170CA 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
MAPLAD36KP170CA FAQ
1.How can I place an order for MAPLAD36KP170CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP170CA 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 MAPLAD36KP170CA reliable?
The price and inventory of MAPLAD36KP170CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP170CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP170CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP170CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP170CA?
MAPLAD36KP170CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP170CA 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 MAPLAD36KP170CA?
For technical support, including MAPLAD36KP170CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP170CA requirements.
6.How does Aetrix verify that MAPLAD36KP170CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP170CA 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 MAPLAD36KP170CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP170CA?
All MAPLAD36KP170CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP170CA, 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 MAPLAD36KP170CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP170CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP170CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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