My Inquiry
My Account
Microchip Technology MAPLAD36KP33AE3
- Part No.:
- MAPLAD36KP33AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP33AE3.pdf
- Description:
- TVS DIODE 33VWM 53.3VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD36KP33AE3 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, features a 33 V reverse standoff voltage (VWM), clamps to ≤53.3 V at 676 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature.
For engineers reviewing the MAPLAD36KP33AE3 datasheet, MAPLAD36KP33AE3 pinout, MAPLAD36KP33AE3 application, or MAPLAD36KP33AE3 equivalent, key selection criteria include its low thermal resistance (RθJC = 1.0 °C/W), RoHS-compliant matte-tin plating, UL94V-0 epoxy package, and compliance with RTCA DO-160 Section 22 multi-stroke lightning and IEC 61000-4-5 Class 5 secondary lightning standards.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients rapidly, achieving <100 ps response time from 0 V to V(BR) min. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting high-reliability operation under repetitive surge stress with ≤0.05% duty factor.
Designed for primary and secondary surge protection layers, it meets AEC-Q101 qualification and supports MIL-PRF-19500 upscreening options. The device is rated for 42 Ω, 12 Ω, and 2 Ω source impedances per IEC 61000-4-5, with defined performance tiers for Class 1–5 lightning immunity depending on standoff voltage and distance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 33 V - matches nominal 24 V DC system rails with margin for ripple and transients |
| Clamping Voltage (VC) | ≤53.3 V @ 676 A IPP - limits downstream IC stress below 5.5 V logic rail tolerance |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper pour or external heatsink |
| Operating Temperature Range | –55°C to +150°C - qualified for engine bay, avionics bay, and industrial control environments |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required before reflow soldering |
| RoHS Compliance | e3 suffix - lead-free matte-tin plating compatible with Pb-free and SnPb assembly processes |
Pinout & Package
MAPLAD36KP33AE3 uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is the metal base (bottom side) of the device, requiring exposed copper pad connection for optimal thermal and electrical performance. Package dimensions are 12.32 mm × 10.54 mm × 5.08 mm (L × W × H), with void-free UL94V-0 thermosetting epoxy body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Transient current entry point | Connected to protected line (e.g., 24 V supply rail); must route with low-inductance trace |
| Cathode (metal base) | Transient current return path & thermal interface | Must be soldered to large copper area or heatsink; serves as primary thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT package | Enables placement in space-constrained avionics modules without height interference |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications with zero early-life failures |
| RTCA DO-160F Waveform 4 & 5A compliance | Meets Level 4/5 pin-injection immunity for airborne equipment without external filtering |
| 3σ lot norm screening on ID | Ensures consistent standby leakage (<10 μA @ 33 V) across production lots for low-power systems |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring burn-in, hermeticity, and extended life testing |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC bus in flight control actuator electronics subjected to multi-stroke lightning events per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed directly at power entry point before DC/DC converters. Use Value: Clamps 36 kW surges within 100 ps while maintaining <53.3 V clamping to protect 3.3 V/5 V microcontrollers and FPGAs downstream. |
Use Scenario: 12 V/24 V battery-fed ECU exposed to ISO 7637-2 load dump pulses up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at main power input to absorb energy from alternator field collapse. Use Value: Withstands 676 A peak current and dissipates 36 kW without degradation, eliminating need for series resistors or fuses. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: 48 V DC link in variable-frequency drive exposed to IGBT switching transients and induced RFI. IC Role / Device Role / Timing Role: Secondary surge protector parallel to bulk capacitor, suppressing fast-rising edge transients. Use Value: Sub-100 ps response ensures clamping occurs before MOSFET gate oxide breakdown thresholds are exceeded. |
Use Scenario: 72 V signaling line in train control interlocking system subject to IEC 61000-4-5 Class 4 surges (4 kV, 2 Ω source). IC Role / Device Role / Timing Role: Bidirectional-capable variant used in differential pair protection (with CA suffix); this unidirectional version applied to single-ended power feed. Use Value: Rated for 2 Ω source impedance Class 4 per spec - clamps to 53.3 V at full 676 A, preserving signal integrity in safety-critical comms. |
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 SMAJ33A | Lower PPP rating (400 W), smaller SMA package, RθJA = 40 °C/W, not DO-160 qualified | Suitable for consumer-grade 24 V systems; insufficient for aerospace multi-stroke or automotive load dump | Select MAPLAD36KP33AE3 when >10× higher energy handling and aviation certification are required |
| Vishay SM8S33A | 3000 W PPP, TO-277 package, RθJC = 2.5 °C/W, AEC-Q101 qualified but no DO-160 data | Valid for automotive ECUs with moderate surge exposure; lacks RTCA/IEC Class 5 validation | Choose MAPLAD36KP33AE3 for mission-critical systems requiring proven multi-stroke lightning resilience and MIL-PRF-19500 scalability |
Compared with SMAJ33A and SM8S33A, MAPLAD36KP33AE3 provides 90× higher peak pulse power, certified DO-160F immunity, and a metal-base thermal interface enabling reliable operation under sustained surge repetition - making it uniquely suited for aerospace and high-end industrial platforms where failure is not an option.
Availability
MAPLAD36KP33AE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, industrial motor drive DC bus conditioning, and railway signaling interface applications requiring stable component supply across long product lifecycles.
Supply support for MAPLAD36KP33AE3 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, communications, and industrial markets, with expertise in radiation-hardened ICs, timing devices, and power protection components.
MAPLAD36KP33AE3 belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for multi-stroke lightning survivability and automotive load dump immunity in safety-critical electronic systems.
FAQ
What is the clamping voltage of MAPLAD36KP33AE3 at its rated peak pulse current?
The MAPLAD36KP33AE3 has a maximum clamping voltage (VC) of 53.3 V at 676 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures downstream 3.3 V and 5 V logic circuits remain within safe operating voltage margins during surge events.
Is MAPLAD36KP33AE3 qualified for automotive applications?
Yes, MAPLAD36KP33AE3 is AEC-Q101 qualified and explicitly rated for automotive load dump protection per ISO 7637-2. Its 36 kW PPP rating, 33 V VWM, and robust thermal design make it suitable for engine control units, ADAS power supplies, and battery management systems exposed to high-energy transients.
Does MAPLAD36KP33AE3 meet RTCA DO-160 lightning standards?
Yes, MAPLAD36KP33AE3 is validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4. Its performance is documented in Microsemi Application Note RF01216 Rev B for 33 V standoff variants.
What is the thermal resistance and recommended mounting method for MAPLAD36KP33AE3?
MAPLAD36KP33AE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W. The cathode is the metal base - it must be soldered to a large copper pad or heatsink using the recommended pad layout (Ref. A = 11.94 mm, B = 5.85 mm) to maintain thermal performance and avoid derating above 100°C case temperature.
How does the e3 suffix in MAPLAD36KP33AE3 affect assembly compatibility?
The e3 suffix indicates RoHS-compliant matte-tin plating on MAPLAD36KP33AE3, fully compatible with both Pb-free reflow profiles (JEDEC J-STD-020D) and traditional SnPb wave soldering. Its moisture sensitivity level is IPC/JEDEC Level 1, eliminating pre-bake requirements and simplifying manufacturing flow.
MAPLAD36KP33AE3 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 676A
- 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
MAPLAD36KP33AE3 FAQ
1.How can I place an order for MAPLAD36KP33AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP33AE3 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 MAPLAD36KP33AE3 reliable?
The price and inventory of MAPLAD36KP33AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP33AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP33AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP33AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP33AE3?
MAPLAD36KP33AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP33AE3 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 MAPLAD36KP33AE3?
For technical support, including MAPLAD36KP33AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP33AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP33AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP33AE3 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 MAPLAD36KP33AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP33AE3?
All MAPLAD36KP33AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP33AE3, 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 MAPLAD36KP33AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP33AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP33AE3 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…
