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Microchip Technology MAPLAD36KP40CA
- Part No.:
- MAPLAD36KP40CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP40CA.pdf
- Description:
- TVS DIODE 40VWM 64.5VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,302
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Product details
Overview
MAPLAD36KP40CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 40 V reverse standoff voltage (VWM), clamps to ≤64.5 V at 559 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP40CA datasheet, MAPLAD36KP40CA pinout, MAPLAD36KP40CA application, or MAPLAD36KP40CA 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 protection per RTCA/DO-160F Waveform 4 (Level 4 up to 400 V), and automotive load dump suppression where low thermal resistance and traceable lot reliability are critical.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, activating when transient voltage exceeds its 40 V standoff threshold and clamping to ≤64.5 V under 559 A impulse. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, and its metal-base package provides direct thermal path to PCB copper for sustained energy dissipation.
The device is surge-tested per AEC-Q101, supports MIL-PRF-19500 upscreening options, and achieves <100 ps response time from 0 V to breakdown. Its 1.0 °C/W junction-to-case thermal resistance and 50 °C/W junction-to-ambient rating (on FR4 with recommended pad layout) enable robust operation under repetitive transients at ≤0.05% duty factor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 40 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤64.5 V @ IPP = 559 A - limits downstream circuit stress during worst-case transients |
| Peak Pulse Current (IPP) | 559 A @ 10/1000 μs - quantifies maximum surge current it safely diverts |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables efficient heat transfer from die to PCB copper via metal base |
| Junction Temperature Range | –55 °C to +150 °C - supports operation in extreme environmental conditions |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required prior to reflow soldering |
Pinout & Package
MAPLAD36KP40CA uses a surface-mount PLAD package with a metal base acting as the cathode terminal for unidirectional variants; for bidirectional devices like MAPLAD36KP40CA, both terminals are symmetrical and non-polarized. The package measures 12.32 mm × 10.54 mm × 5.08 mm (L × W × H) and features void-free UL94V-0 epoxy molding with matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Electrically symmetrical - either terminal serves as input or return path for transient current |
| Terminal 2 | Anode / Cathode (bidirectional) | Identical to Terminal 1 - enables placement flexibility on PCB without polarity orientation check |
| Metal Base | Thermal Interface / Electrical Terminal | Provides low-resistance thermal conduction path to heatsink or copper pour; electrically connected to one terminal |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled data lines, differential buses, or floating power rails without polarity constraints |
| 3σ lot norm screening on standby current (ID) | Ensures consistent leakage performance across production lots, critical for low-power sensor interfaces |
| RTCA DO-160F Waveform 4 compliance (Level 4) | Validated for 6.4/69 μs pin-injection transients up to 400 V, meeting aircraft avionics immunity requirements |
| IEC 61000-4-5 Class 5 support (42 Ω source) | Rated for long-distance secondary lightning protection up to 260 V standoff, extending system-level surge margin |
| AEC-Q101 qualified | Confirms robustness against automotive load dump and switching transients in engine control and powertrain modules |
Applications
| Aircraft Avionics Protection | Automotive Power Distribution |
|---|---|
|
Use Scenario: Protecting ARINC 429 data receivers and CAN FD transceivers from induced lightning transients on aircraft wiring harnesses. IC Role / Device Role / Timing Role: Shunt-based transient voltage suppressor placed at connector interface to clamp fast-rising surges before they reach sensitive receiver inputs. Use Value: Meets RTCA DO-160 Section 22 multi-stroke lightning standard with ≤100 ps response and 36 kW energy handling, preventing latch-up or burnout in flight-critical electronics. |
Use Scenario: Safeguarding 12 V/24 V power distribution networks in commercial vehicles during alternator load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main battery feed line, activated within nanoseconds to limit bus voltage to ≤64.5 V. Use Value: Withstands 559 A peak current and dissipates 36 kW surge energy without degradation, eliminating need for redundant fusing or derated system margins. |
| Industrial Motor Drive Control | Railway Signaling Interface |
|
Use Scenario: Shielding PLC I/O modules from inductive kickback and EFT bursts generated by contactor switching in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS placed across isolated RS-485 bus lines to suppress common-mode and differential-mode transients. Use Value: Symmetrical clamping ensures equal protection on both signal lines, maintaining signal integrity while meeting IEC 61000-4-4 Level 4 (4 kV EFT) and IEC 61000-4-5 Class 3 (42 Ω source). |
Use Scenario: Securing track-side signaling equipment against lightning-induced surges coupled into 60 V DC signaling circuits. IC Role / Device Role / Timing Role: Secondary surge protector installed after primary gas discharge tube (GDT), providing precise clamping at 40 V standoff. Use Value: Enables coordinated protection staging with GDTs by clamping residual voltage to ≤64.5 V, ensuring downstream optocouplers and level shifters remain within safe operating area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | Lower PPP (600 W), smaller SMB package, higher RθJA (90 °C/W), same 40 V VWM and bidirectional configuration | Suitable for consumer-grade or non-safety-critical industrial I/O, not certified for DO-160 or AEC-Q101 | Select SMBJ40CA only for cost-sensitive, low-energy applications where aerospace or automotive qualification is unnecessary. |
| SMCJ40CA | Higher PPP (1500 W), larger SMC package, RθJA ≈ 40 °C/W, same VWM and bidirectional polarity, AEC-Q101 qualified but not DO-160 tested | Applicable in automotive ECUs requiring higher surge margin than SMBJ but lacking aircraft certification requirements | Choose SMCJ40CA for automotive body control modules where 1.5 kW surge capacity suffices and DO-160 compliance is not mandated. |
Compared with SMBJ40CA and SMCJ40CA, MAPLAD36KP40CA delivers 24× and 24× higher peak pulse power respectively, enables DO-160F Waveform 4 Level 4 compliance, and provides 1.0 °C/W junction-to-case thermal resistance-critical for sustained multi-stroke lightning events in safety-critical platforms.
Availability
MAPLAD36KP40CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive power distribution, and industrial motor drive control requiring stable component supply, full lot traceability, and long-term lifecycle support.
Supply support for MAPLAD36KP40CA 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 semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and surge protection components.
MAPLAD36KP40CA belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for mission-critical surge immunity in aircraft, rail, and heavy-duty automotive systems where multi-stroke lightning resilience and thermal stability are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP40CA at its rated peak pulse current?
The MAPLAD36KP40CA exhibits a maximum clamping voltage (VC) of 64.5 V when subjected to its rated peak pulse current of 559 A under 10/1000 μs waveform conditions. This value is guaranteed across temperature and process variation, ensuring predictable overvoltage limiting for protected circuits. The MAPLAD36KP40CA maintains this clamping performance even after repeated surges due to its low thermal resistance and robust silicon structure.
Is MAPLAD36KP40CA certified for RTCA DO-160 lightning testing?
Yes, MAPLAD36KP40CA is validated for RTCA DO-160 Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) at Level 4 up to 400 V standoff. Its 36 kW pulse power rating and sub-100 ps response time meet the stringent energy-handling and timing requirements of aircraft avionics. The MAPLAD36KP40CA achieves this performance without external heatsinking when mounted per the specified FR4 pad layout.
How does the PLAD package of MAPLAD36KP40CA improve thermal performance compared to standard SMC or SMB packages?
The MAPLAD36KP40CA uses a metal-base PLAD package with 1.0 °C/W junction-to-case thermal resistance-over 40× better than typical SMC packages (~40 °C/W). This allows direct thermal coupling to PCB copper pours or heatsinks, enabling rapid dissipation of 36 kW surge energy. Unlike SMB/SMC plastic-body packages, the MAPLAD36KP40CA's metal base minimizes cumulative heating during repetitive transients, a key requirement for DO-160 multi-stroke validation.
Does MAPLAD36KP40CA require moisture sensitivity handling before reflow soldering?
No, MAPLAD36KP40CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions and requires no dry-packaging or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield loss from moisture-related popcorning. The MAPLAD36KP40CA's void-free UL94V-0 epoxy encapsulation contributes to this robust moisture resistance.
Can MAPLAD36KP40CA be used in bidirectional AC signal paths such as RS-485 or CAN FD interfaces?
Yes, MAPLAD36KP40CA is explicitly designed as a bidirectional TVS diode, making it suitable for protecting balanced differential interfaces like RS-485 and CAN FD. Its symmetrical clamping behavior ensures equal voltage limiting on both signal lines regardless of transient polarity, preserving signal integrity and common-mode rejection. The MAPLAD36KP40CA's fast response and low clamping ratio prevent data corruption during ESD or EFT events.
MAPLAD36KP40CA 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 559A
- 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
MAPLAD36KP40CA FAQ
1.How can I place an order for MAPLAD36KP40CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP40CA 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 MAPLAD36KP40CA reliable?
The price and inventory of MAPLAD36KP40CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP40CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP40CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP40CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP40CA?
MAPLAD36KP40CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP40CA 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 MAPLAD36KP40CA?
For technical support, including MAPLAD36KP40CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP40CA requirements.
6.How does Aetrix verify that MAPLAD36KP40CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP40CA 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 MAPLAD36KP40CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP40CA?
All MAPLAD36KP40CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP40CA, 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 MAPLAD36KP40CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP40CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP40CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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