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Diodes Incorporated DM5W33AQ-13
- Part No.:
- DM5W33AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W33AQ-13.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:8,778
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Product details
Overview
DM5W33AQ-13 from Diodes Incorporated is a 3600W surface-mount transient voltage suppressor (TVS) diode designed for automotive power-line surge protection. It features a 33V reverse standoff voltage (VRWM), 36.7–40.6V breakdown voltage (VBR), 53.3V clamping voltage (VC) at 68A peak pulse current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM5W33AQ-13 datasheet, DM5W33AQ-13 pinout, DM5W33AQ-13 application, or DM5W33AQ-13 equivalent, this device is selected for ISO 16750-2 load dump and ISO 7637-2 Pulse 1/2a/3a/3b compliance in 12V/24V automotive electrical systems requiring high-energy transient suppression with low thermal resistance (RθJC = 1.1°C/W).
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode to clamp transients on DC power rails. Its DO-218 (Type E) package integrates a heatsink-connected anode terminal, enabling direct mounting to metal chassis or PCB copper pour for efficient thermal dissipation during 10/1000µs surges up to 3600W.
The device sustains 500A non-repetitive forward surge current (IFSM) and maintains <10µA reverse leakage at VRWM up to +175°C junction temperature. Its low RθJC (1.1°C/W) and wide operating range (–55°C to +175°C) support placement near high-heat sources like alternators or motor drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3600W (10/1000µs waveform; enables single-event suppression of ISO 16750-2 load dump surges) |
| Reverse Standoff Voltage | 33V (maximum continuous DC bus voltage before clamping activation in 24V automotive systems) |
| Clamping Voltage | 53.3V @ 68A (limits downstream IC voltage stress during worst-case transient events) |
| Junction-to-Case Thermal Resistance | 1.1°C/W (supports >5W steady-state dissipation when mounted to heatsinked PCB copper) |
| Operating Temperature Range | –55°C to +175°C (validates use in engine compartment environments without derating) |
| AEC-Q101 Qualified | Yes (certified for automotive-grade reliability per stress test requirements) |
| RoHS & Halogen-Free | Compliant (meets EU RoHS 3 and Diodes' "Green" definition: Br+Cl <1500ppm, Sb <1000ppm) |
Pinout & Package
Package: DO-218 (Type E), surface-mount molded plastic case with UL 94V-0 flammability rating; heatsink tab is electrically connected to the anode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive input / clamping reference | Must be soldered to large copper area or metal chassis for thermal management and low-inductance path to ground return |
| Cathode (Top Lead) | Transient current sink | Connected to protected line (e.g., battery feed); carries full surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| 3600W Peak Pulse Power | Enables single-device protection against ISO 16750-2 load dump (up to 35V, 100ms exponential) without cascaded TVS stacking |
| Low Clamping Ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream DC-DC converters and microcontrollers during surge events |
| 1.1°C/W Thermal Resistance | Allows >4.5W continuous power handling at TC = +125°C-critical for sustained surge recovery in hot under-hood locations |
| AEC-Q101 Qualification | Validates robustness across temperature cycling, humidity, mechanical shock, and lifetime HTOL testing for automotive production use |
| Lead-Free & Halogen-Free | Supports global automotive OEM sustainability mandates and eliminates brominated flame retardants in PCB assembly |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Feed |
|---|---|
Use Scenario: Protects 5V/3.3V regulator inputs from alternator load dump and jump-start surges in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients on main 12V rail upstream of DC-DC converters. Use Value: Prevents regulator latch-up or destruction during 35V/100ms load dump pulses per ISO 16750-2, maintaining ECU uptime. |
Use Scenario: Shields BCM microcontroller and CAN transceivers from ISO 7637-2 Pulse 1 (inductive switch-off) on vehicle battery line. IC Role / Device Role / Timing Role: Fast-response avalanche diode shunts energy within nanoseconds to limit rail voltage excursion. Use Value: Ensures CAN communication integrity by holding VCC below 5.5V during 100V/2ms transients, avoiding bus reset. |
| Electric Power Steering (EPS) Motor Driver | ADAS Camera Power Supply |
Use Scenario: Guards H-bridge gate drivers and current sense amplifiers against motor back-EMF spikes during EPS actuation. IC Role / Device Role / Timing Role: High-current TVS placed at motor driver supply input to absorb repetitive 500A surge events. Use Value: Extends driver IC lifetime by limiting voltage overshoot to ≤53.3V during 8.3ms half-sine surges (IFSM = 500A). |
Use Scenario: Secures 12V-to-5V/3.3V power tree for surround-view cameras exposed to cranking dips and load dump. IC Role / Device Role / Timing Role: Primary surge protector on camera module's main input rail, preceding buck converter. Use Value: Maintains image sensor operation during 25V/100ms cranking dips and 35V/100ms load dump, preventing frame 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 |
|---|---|---|---|
| SMAJ33A | Lower peak power (400W), SMA package, RθJC ≈ 50°C/W | Not suitable for ISO 16750-2 load dump; limited to ISO 7637-2 Pulse 1/2a only | Select when cost sensitivity outweighs surge energy requirements and thermal constraints allow higher junction temperature rise |
| SMCJ33A | 1500W peak power, SMC package, RθJC ≈ 3.5°C/W, same VRWM/VC | Meets ISO 7637-2 but fails ISO 16750-2 load dump due to insufficient energy rating | Choose for space-constrained designs where 3600W capability is unnecessary and DO-218 footprint is unavailable |
Compared with SMAJ33A and SMCJ33A, DM5W33AQ-13 delivers 2.4× higher surge energy handling and 3.2× lower thermal resistance-enabling reliable protection in high-temperature, high-energy automotive power domains where legacy packages fail.
Availability
DM5W33AQ-13 is available at Aetrix Electronics and suitable for automotive ECU power protection, body control modules, electric power steering systems, and ADAS camera power supplies requiring stable component supply across extended vehicle lifecycles.
Supply support for DM5W33AQ-13 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
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets.
This device belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for ISO 16750-2 and ISO 7637-2 compliance in harsh-temperature, high-reliability vehicle power systems.
FAQ
What is the maximum clamping voltage of DM5W33AQ-13 at its rated peak pulse current?
The DM5W33AQ-13 clamps to 53.3V at 68A peak pulse current (10/1000µs waveform), measured per JEDEC standards. This value ensures downstream 5V regulators and microcontrollers remain within absolute maximum ratings during surge events, with margin below typical 5.5V overvoltage thresholds.
Can DM5W33AQ-13 be used in 24V commercial vehicle systems?
Yes-its 33V VRWM and 53.3V VC are compatible with 24V nominal systems, where load dump peaks reach up to 35V. The device's –55°C to +175°C operating range and AEC-Q101 qualification validate use in heavy-duty truck and bus ECUs exposed to extreme ambient temperatures.
How does the DO-218 package improve thermal performance over SMA or SMC packages?
The DO-218 (Type E) package uses a large metal heatsink tab directly bonded to the anode, achieving RθJC = 1.1°C/W-3.2× better than SMCJ33A (3.5°C/W) and 45× better than SMAJ33A (50°C/W). This allows >4.5W steady-state dissipation at 125°C case temperature, critical for under-hood placement.
Is DM5W33AQ-13 compliant with modern automotive sustainability requirements?
Yes-it is RoHS 3 compliant (2015/863/EU), halogen-free (<1500ppm Br+Cl), antimony-free (<1000ppm), and manufactured in IATF 16949 certified facilities. Diodes' "Green" certification confirms full alignment with OEM environmental directives including BMW Group Standard GS 95024 and VW TL 813.
DM5W33AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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):
- 68A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM5W33AQ-13 FAQ
1.How can I place an order for DM5W33AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W33AQ-13 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 DM5W33AQ-13 reliable?
The price and inventory of DM5W33AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W33AQ-13 is usually 5 days.
3.What payment methods are accepted for DM5W33AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W33AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W33AQ-13?
DM5W33AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W33AQ-13 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 DM5W33AQ-13?
For technical support, including DM5W33AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W33AQ-13 requirements.
6.How does Aetrix verify that DM5W33AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM5W33AQ-13 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 DM5W33AQ-13 meets industry standards.
7.What is the process for return or replacement of DM5W33AQ-13?
All DM5W33AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W33AQ-13, 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 DM5W33AQ-13 part is unused and in its original packaging.
Return procedure for DM5W33AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W33AQ-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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