My Inquiry
My Account
Microchip Technology MAPLAD36KP26CAE3
- Part No.:
- MAPLAD36KP26CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP26CAE3.pdf
- Description:
- TVS DIODE 26VWM 43VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD36KP26CAE3 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, clamps transients to ≤43.0 V at 838 A, and features a 26 V reverse standoff voltage (VWM), 28.9–31.9 V breakdown voltage (V(BR)), and <5 ns response time. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP26CAE3 datasheet, MAPLAD36KP26CAE3 pinout, MAPLAD36KP26CAE3 application, or MAPLAD36KP26CAE3 equivalent, key selection criteria include its bidirectional polarity, 26 V VWM rating, 36 kW PPP capability, IEC 61000-4-5 Class 4/5 secondary lightning compliance with 12 Ω and 42 Ω source impedances, and RoHS-compliant e3 termination.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold. Its low thermal resistance (RθJC = 1.0 °C/W) enables rapid heat dissipation into the PCB copper pad, supporting repeated surge events under ≤0.05% duty factor per Figure 2.
The device uses silicon avalanche junction technology with void-free transfer-molded UL94V-0 epoxy packaging and tin-plated terminals compliant with MIL-STD-750 Method 2026. Its cathode is the metal baseplate - critical for correct PCB layout and thermal management in high-reliability mounting configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous operating voltage before clamping onset; must exceed system peak DC or AC waveform voltage. |
| V(BR) min/max | 28.9–31.9 V @ 5 mA - verified breakdown range ensures consistent turn-on across production lots and temperature. |
| VC @ IPP | 43.0 V @ 838 A - clamping voltage limits downstream IC stress during worst-case 10/1000 μs surges. |
| PPP | 36,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced transients per DO-160F Waveform 4/5A. |
| RθJC | 1.0 °C/W - allows direct thermal coupling to heatsink or large copper pour, essential for sustained multi-pulse operation. |
| Response time | <5 ns - ensures sub-nanosecond reaction to fast-rising ESD/EFT events per IEC 61000-4-2/4-4. |
| Moisture sensitivity | Level 1 per J-STD-020B - eliminates dry-pack requirement and simplifies SMT handling and storage. |
Pinout & Package
MAPLAD36KP26CAE3 uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is the exposed metal baseplate (bottom side), requiring dedicated thermal pad connection to PCB ground plane for optimal RθJC performance. No top-side pins exist - electrical connection is made solely via the baseplate (cathode) and front-side metallized terminal (anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Baseplate (bottom) | Cathode | Primary thermal path and return node; must be soldered to ≥100 mm² copper area for rated PPP derating. |
| Front-side terminal | Anode | Signal-side connection point; routed to protected line (e.g., aircraft avionics bus, automotive battery feed). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating lines (e.g., differential data buses, sensor inputs) without polarity concerns. |
| AEC-Q101 qualification | Validates reliability for automotive under-hood applications including load dump and jump-start transients. |
| RTCA DO-160F Level 4/5 compliance | Meets stringent airborne equipment surge immunity for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). |
| e3 RoHS termination | Matte-tin plating ensures lead-free solder compatibility and long-term intermetallic stability in reflow profiles. |
| UL94V-0 epoxy body | Self-extinguishing encapsulation prevents flame propagation in safety-critical avionics enclosures. |
Applications
| Aircraft Avionics Power Bus Protection | Automotive Battery Line Protection |
|---|---|
Use Scenario: Protecting ARINC 429 data receivers and flight control sensors connected to unregulated 28 VDC aircraft bus subject to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp common-mode transients before reaching interface ICs. Use Value: Limits clamped voltage to 43.0 V, ensuring downstream 3.3 V/5 V logic remains within absolute maximum ratings during 36 kW multi-stroke events. | Use Scenario: Safeguarding engine control unit (ECU) power input against 12 V automotive load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary surge suppression element on main battery rail, mounted with thermal pad to chassis ground. Use Value: Withstands 838 A peak current while maintaining clamping below 43.0 V, preventing brownout or latch-up in microcontroller power domains. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding gate driver ICs and isolated feedback circuits in variable-frequency drives from IGBT switching transients and inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitor terminals to absorb repetitive 10/1000 μs energy bursts. Use Value: 1.0 °C/W RθJC enables stable operation at 0.05% duty cycle, avoiding thermal runaway during extended motor acceleration cycles. | Use Scenario: Securing trackside signaling relays and communication modems against induced surges from nearby traction currents and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional protection on 24 V DC signaling lines interfacing to legacy relay cabinets and modern Ethernet backbones. Use Value: Complies with IEC 61000-4-5 Class 4 (42 Ω source) up to 260 V VWM variants, enabling use in long-distance field wiring with minimal voltage margin loss. |
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 SMAJ26CA | 600 W PPP rating, 5.0 mm × 7.0 mm SMA package, 1.5x higher RθJA (55 °C/W), no AEC-Q101 or DO-160 qualification. | Suitable only for commercial-grade industrial controls; insufficient for aerospace or automotive safety-critical nodes. | Select MAPLAD36KP26CAE3 when 36 kW surge handling, DO-160 compliance, or AEC-Q101 reliability is required. |
| Vishay SM8S26CA | 6600 W PPP, 8.3 mm × 10.1 mm SM8 package, RθJC = 1.5 °C/W, qualified to AEC-Q101 but not DO-160F. | Applicable for automotive ECUs where DO-160 is not mandated; lacks multi-stroke lightning validation for aviation use. | Choose MAPLAD36KP26CAE3 for certified airborne systems or where 36 kW headroom is needed beyond SM8S26CA's 6.6 kW limit. |
Compared with SMAJ26CA and SM8S26CA, MAPLAD36KP26CAE3 provides 5.4× and 5.5× higher peak pulse power respectively, full DO-160F Waveform 4/5A certification, and lower thermal resistance - making it the sole option for certified multi-stroke lightning protection in avionics and high-end automotive platforms.
Availability
MAPLAD36KP26CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECU power rails, industrial motor drive DC links, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP26CAE3 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, timing, and power solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP26CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical systems where multi-stroke survivability and thermal robustness are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP26CAE3 at its rated peak pulse current?
The MAPLAD36KP26CAE3 has a maximum clamping voltage (VC) of 43.0 V at its peak pulse current (IPP) of 838 A under 10/1000 μs waveform conditions. This value is measured per standard test methods defined in the datasheet and guarantees that downstream circuitry will not experience voltages exceeding this level during specified surge events. The clamping performance is validated across temperature and production lots.
Is MAPLAD36KP26CAE3 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, MAPLAD36KP26CAE3 is fully qualified to AEC-Q101 for stress testing including HTGB, HTRB, and temperature cycling. Its construction, wafer lot traceability, and surge testing align with automotive under-hood reliability requirements. The device is explicitly listed in Microsemi's AEC-Q101-compliant product portfolio and supports applications such as battery line protection in engine control units and ADAS power supplies.
How does the PLAD package of MAPLAD36KP26CAE3 improve thermal performance compared to standard SMB/SMA packages?
The PLAD package of MAPLAD36KP26CAE3 achieves a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W by using a large metal baseplate as the cathode terminal. This design allows direct conduction of heat into the PCB copper pour or heatsink, unlike SMB/SMA packages that rely on lead-frame conduction with RθJC > 3.0 °C/W. As a result, MAPLAD36KP26CAE3 sustains 36 kW surges with significantly lower junction temperature rise.
Does MAPLAD36KP26CAE3 meet RTCA DO-160F lightning protection standards?
Yes, MAPLAD36KP26CAE3 is certified for RTCA DO-160F Section 22 multi-stroke lightning testing. It passes Waveform 4 (6.4/69 μs) at Level 4 up to 400 V VWM and Waveform 5A (40/120 μs) at Level 4 up to 78 V VWM. For the 26 V variant, it supports Level 4 compliance in both waveforms - a requirement for commercial and military aircraft avionics power and signal line protection.
What is the meaning of the 'CA' and 'E3' suffixes in MAPLAD36KP26CAE3?
In MAPLAD36KP26CAE3, 'CA' denotes bidirectional polarity (as opposed to 'A' for unidirectional), and 'E3' specifies RoHS-compliant matte-tin plating per JEDEC J-STD-609. These suffixes are defined in Microsemi's nomenclature guide: CA confirms symmetrical clamping behavior for AC or floating lines, while E3 ensures lead-free solder compatibility and eliminates post-reflow whisker risk in high-reliability assemblies.
MAPLAD36KP26CAE3 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 838A
- 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
MAPLAD36KP26CAE3 FAQ
1.How can I place an order for MAPLAD36KP26CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP26CAE3 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 MAPLAD36KP26CAE3 reliable?
The price and inventory of MAPLAD36KP26CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP26CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP26CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP26CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP26CAE3?
MAPLAD36KP26CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP26CAE3 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 MAPLAD36KP26CAE3?
For technical support, including MAPLAD36KP26CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP26CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP26CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP26CAE3 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 MAPLAD36KP26CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP26CAE3?
All MAPLAD36KP26CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP26CAE3, 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 MAPLAD36KP26CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP26CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP26CAE3 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…
