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Diodes Incorporated DM5W43AQ-13
- Part No.:
- DM5W43AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W43AQ-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:9,174
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Product details
Overview
DM5W43AQ-13 from Diodes Incorporated is a 3600W surface-mount transient voltage suppressor (TVS) diode in DO-218 (Type E) package, designed for automotive load dump and ISO7637-2 surge protection. It features 43V reverse standoff voltage (VRWM), 69.4V max clamping voltage (VC) at 52A peak pulse current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM5W43AQ-13 datasheet, DM5W43AQ-13 pinout, DM5W43AQ-13 application, or DM5W43AQ-13 equivalent, this page delivers verified electrical specs, thermal derating behavior, ISO16750-2 Pulse A/B compliance, and direct replacement guidance for automotive power rail protection design.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients on 12V/24V automotive power buses. Its low RθJC (1.1°C/W) enables high-power dissipation into a heatsink-anode configuration, supporting sustained operation up to +175°C junction temperature.
The device meets ISO16750-2 Load Dump (Pulse A) and ISO7637-2 Pulse 1/2a/3a/3b requirements. Clamping occurs within nanoseconds at 10/1000µs waveform, with <10µA reverse leakage at VRWM and <150µA at +175°C - critical for low-quiescent-current vehicle electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3600W (10/1000µs); handles full ISO16750-2 load dump surges without failure |
| Reverse Standoff Voltage | 43V (VRWM); blocks normal battery voltage while triggering only during overvoltage events |
| Clamping Voltage | 69.4V @ 52A (IPP); limits downstream IC voltage stress during 3600W transient |
| Junction-to-Case Thermal Resistance | 1.1°C/W; enables efficient heat transfer to PCB copper or external heatsink |
| Operating Temperature Range | −55°C to +175°C; qualified for engine compartment and transmission control unit environments |
| AEC-Q101 Qualified | Yes; validated for automotive-grade reliability including temperature cycling and HTRB |
| RoHS & Halogen-Free | Compliant per EU RoHS 3 and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Pinout & Package
Package: DO-218 (Type E), molded plastic UL 94V-0 housing; heatsink tab is anode (+), cathode marked by bar on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive terminal / thermal interface | Must be soldered to large copper pour or external heatsink for RθJC = 1.1°C/W performance |
| Cathode (Bar-marked lead) | Negative terminal / surge return path | Connected to protected circuit ground; carries full 52A transient current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| High surge current capability | 500A IFSM (8.3ms half-sine); withstands repeated cranking surges without degradation |
| Low clamping ratio | VC/VRWM = 1.61; minimizes overvoltage margin required for downstream 75V-rated components |
| Stable high-temp leakage | 150µA max IR at +175°C; avoids false triggering or bias drift in hot under-hood locations |
| Automotive change control | PPAP-capable with IATF 16949 manufacturing; supports traceability for Tier-1 BOMs |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power rails from alternator load dump spikes during battery disconnect. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V main input before DC-DC converter. Use Value: Limits voltage to ≤69.4V during 3600W transients, preventing damage to 75V-rated buck controllers and CAN transceivers. |
Use Scenario: Shields LIN bus transceivers and LED drivers from ISO7637-2 Pulse 3b capacitive coupling noise. IC Role / Device Role / Timing Role: Low-capacitance (≈36pF) TVS placed at module input connector. Use Value: Clamps sub-100ns transients without distorting 20kbps LIN signaling integrity. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Guards solenoid driver ICs against inductive kickback during gear-shift actuation. IC Role / Device Role / Timing Role: Parallel-connected TVS across 12V supply rail feeding H-bridge gate drivers. Use Value: Absorbs 500A surge energy with <1.1°C/W thermal resistance, maintaining safe junction temperature during repeated shifts. |
Use Scenario: Safeguards image sensor power supply from ignition-induced transients in rear-view camera systems. IC Role / Device Role / Timing Role: Secondary protection stage after front-end fuse and common-mode choke. Use Value: Enables AEC-Q101-compliant design with <150µA leakage at +105°C ambient, preserving low-power sleep mode current budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Lower PPK (400W), SMA package, RθJC ≈ 50°C/W | Not suitable for load dump; limited to ISO7637-2 Pulse 1/2a only | Select only for non-load-dump, space-constrained consumer applications |
| SMCJ43A | Same 3600W rating but SMC package; RθJC = 1.5°C/W, higher VC = 70.1V | Valid for load dump but requires larger PCB footprint and less efficient thermal transfer | Choose when DO-218 mounting is incompatible with mechanical layout |
Compared with SMAJ43A and SMCJ43A, DM5W43AQ-13 uniquely combines DO-218's superior thermal performance (RθJC = 1.1°C/W), AEC-Q101 qualification, and precise 69.4V clamping - making it the only option rated for continuous under-hood deployment with full ISO16750-2 compliance.
Availability
DM5W43AQ-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, transmission control modules, and ADAS camera systems requiring stable component supply across extended product lifecycles.
Supply support for DM5W43AQ-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers and manufacturing facilities across Asia and the Americas.
The DM5WxxAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for robust load dump and ISO7637-2 surge immunity in harsh-temperature vehicle subsystems.
FAQ
What is the maximum clamping voltage of DM5W43AQ-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 69.4V at 52A peak pulse current (IPP) under 10/1000µs waveform conditions, measured per DS41000 Rev. 7–2. This value ensures downstream 75V-rated components remain within safe operating limits during worst-case load dump events.
Can DM5W43AQ-13 be used in non-automotive applications?
Yes - its 3600W surge rating, −55°C to +175°C operation, and low leakage make it suitable for industrial motor drives, solar charge controllers, and telecom power supplies exposed to high-energy transients. However, AEC-Q101 qualification and PPAP documentation are automotive-specific benefits.
How does the DO-218 package improve thermal performance over SMA or SMC packages?
The DO-218 (Type E) package uses a metal heatsink tab as the anode, enabling direct thermal conduction to PCB copper or external heatsinks. Its RθJC of 1.1°C/W is ~45% lower than SMCJ43A (1.5°C/W) and >97% lower than SMAJ43A (~50°C/W), significantly extending surge endurance at elevated ambient temperatures.
Is the polarity marking consistent across all DM5WxxAQ variants?
Yes - all DM5WxxAQ devices use identical DO-218 (Type E) packaging with the heatsink tab as anode (+) and a bar marking on the case indicating the cathode (−) lead. This polarity is confirmed in the top-view diagram on page 2 of DS41000 Rev. 7–2 and applies uniformly across the 10V–43V family.
DM5W43AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 52A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM5W43AQ-13 FAQ
1.How can I place an order for DM5W43AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W43AQ-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 DM5W43AQ-13 reliable?
The price and inventory of DM5W43AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W43AQ-13 is usually 5 days.
3.What payment methods are accepted for DM5W43AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W43AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W43AQ-13?
DM5W43AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W43AQ-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 DM5W43AQ-13?
For technical support, including DM5W43AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W43AQ-13 requirements.
6.How does Aetrix verify that DM5W43AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM5W43AQ-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 DM5W43AQ-13 meets industry standards.
7.What is the process for return or replacement of DM5W43AQ-13?
All DM5W43AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W43AQ-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 DM5W43AQ-13 part is unused and in its original packaging.
Return procedure for DM5W43AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W43AQ-13 Tags
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