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Diodes Incorporated DM5W43A-13
- Part No.:
- DM5W43A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W43A-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,007
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Product details
Overview
DM5W43A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection. It features a 43 V reverse standoff voltage (VRWM), 69.4 V maximum clamping voltage (VC) at 52 A peak pulse current, 3600 W peak pulse power (10/1000 µs), and DO-218 (Type E) package with anode-heatsink polarity. It is qualified to AEC-Q standards and used in 12 V/24 V automotive power rail protection.
For engineers reviewing the DM5W43A-13 datasheet, DM5W43A-13 pinout, DM5W43A-13 application, or DM5W43A-13 equivalent, key selection criteria include clamping voltage margin vs. system overvoltage tolerance, thermal resistance (RθJC = 1.1 °C/W), junction temperature range (–55 °C to +175 °C), and compliance with ISO16750-2 load dump and ISO7637-2 Pulse 1/2a/3a/3b waveforms.
Technical Context
This unidirectional TVS diode operates as a clamping device across DC power rails, conducting only during overvoltage transients above its breakdown voltage (VBR min = 47.8 V). Its low thermal resistance enables high-energy surge dissipation without thermal runaway under repeated load dump events.
The DO-218 package integrates a heatsink-connected anode terminal for direct PCB thermal coupling, supporting sustained 5 W average power dissipation at TC = +25 °C. Its 10/1000 µs waveform rating reflects standardized automotive surge immunity testing per ISO 16750-2 Annex D.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA; sets upper limit for nominal 24 V system rail protection. |
| VBR @ IT=5 mA | 47.8–52.8 V - Breakdown onset range; ensures reliable conduction onset above normal battery transients (e.g., cold crank). |
| VC @ IPP=52 A | 69.4 V - Clamped voltage during 10/1000 µs surge; must remain below IC absolute maximum ratings of protected downstream circuitry. |
| PPK (10/1000 µs) | 3600 W - Peak surge energy handling capacity; validates compliance with ISO16750-2 Load Dump Class III (≥3000 W requirement). |
| RθJC | 1.1 °C/W - Junction-to-case thermal resistance; enables effective heat transfer to heatsinked PCB copper, critical for repetitive surge duty cycles. |
| TJ Range | –55 °C to +175 °C - Extended junction temperature capability supports under-hood placement in modern automotive ECUs. |
| IFSM (8.3 ms) | 500 A - Non-repetitive forward surge rating; accommodates high-current short-circuit fault currents in fused power distribution. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic (UL 94V-0), anode connected to heatsink tab, cathode marked by bar on top surface. Weight: 2.74 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Power Rail Return / Thermal Path | Electrically connects to system ground or low-side return; thermally bonded to large copper pour for heat extraction. |
| Cathode (Top-Side Lead) | Protected Line Input | Connects to positive supply rail (e.g., battery feed); clamps transients to anode potential during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Validated for ISO16750-2 Load Dump Class III (10 ms exponential waveform up to 3000 W), enabling single-device protection without parallel stacking. |
| Low RθJC = 1.1 °C/W | Enables >80% of rated 5 W average power dissipation at TC = +25 °C without derating, reducing need for oversized copper or forced cooling. |
| AEC-Q qualified reliability | Meets stress test requirements per AEC-Q200 for automotive-grade robustness, including temperature cycling, humidity bias, and surge endurance. |
| RoHS 3 & Halogen-Free | Complies with EU Directive 2015/863/EU and Diodes' "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb), supporting eco-compliant vehicle manufacturing. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Feed |
|---|---|
|
Use Scenario: Protects microcontroller power rails from load dump surges during alternator field coil de-energization in 12 V/24 V vehicles. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery input and DC-DC converter input stage. Use Value: Limits clamped voltage to 69.4 V, staying within 80% of typical 80 V-rated automotive DC-DC input limits while surviving ≥3000 W surges. |
Use Scenario: Shields BCM logic supply from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (battery disconnect) transients. IC Role / Device Role / Timing Role: Fast-response transient suppressor on main 12 V input, upstream of LDO regulators and CAN transceivers. Use Value: Sub-100 ns response time and 10 µA max IR at VRWM ensure minimal standby current draw and no interference with 5 V/3.3 V regulation stability. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
|
Use Scenario: Guards image sensor and ISP power inputs against coupled transients from nearby high-current actuators in compact camera modules. IC Role / Device Role / Timing Role: Primary surge clamp on 5 V or 3.3 V camera rail, mounted adjacent to connector entry point. Use Value: Low capacitance (<100 pF at 1 MHz) prevents signal integrity degradation on high-speed MIPI CSI-2 interfaces sharing same PCB layer. |
Use Scenario: Safeguards gate driver ICs and MCU I/O from motor commutation spikes and battery reversal events in EPS H-bridge circuits. IC Role / Device Role / Timing Role: Bidirectional-capable layout (anode grounded, cathode to rail) used in conjunction with reverse-polarity protection MOSFETs. Use Value: 500 A IFSM rating supports coordination with 40 A fuse links, ensuring TVS triggers before fuse clearing during short-circuit faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Lower PPK = 400 W; SMA package (RθJC ≈ 40 °C/W); VRWM = 43 V, VC = 69.4 V at 5.8 A. | Not suitable for ISO16750-2 load dump; limited to ISO7637-2 Pulse 1/2a only due to power limitation. | Select when space-constrained and surge energy is ≤400 W; requires additional thermal management for higher-duty cycles. |
| SMCJ43A | PPK = 1500 W; SMC package (RθJC ≈ 10 °C/W); same VRWM/VC but lower IPP = 21.7 A at 10/1000 µs. | Meets ISO7637-2 but fails ISO16750-2 Class III; insufficient for 3600 W load dump without parallel devices. | Choose where cost sensitivity outweighs full load dump compliance; acceptable for non-critical body electronics with lower surge exposure. |
Compared with SMAJ43A and SMCJ43A, DM5W43A-13 delivers 2.4× and 2.4× higher peak power respectively, with 36× and 9× lower thermal resistance-enabling single-device, heatsink-integrated protection for high-reliability engine bay applications without derating or redundancy.
Availability
DM5W43A-13 is available at Aetrix Electronics and suitable for automotive ECU power protection, body control module surge suppression, ADAS camera rail hardening, and electric power steering motor driver safeguarding requiring stable component supply across multi-year production programs.
Supply support for DM5W43A-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, specializing in high-reliability components for automotive, industrial, and computing markets.
This device belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically to meet stringent ISO16750-2 and ISO7637-2 surge immunity requirements in engine bay and chassis-mounted electronic control units.
FAQ
What is the maximum clamping voltage of DM5W43A-13 under standard test conditions?
The maximum clamping voltage (VC) is 69.4 V at a peak pulse current (IPP) of 52 A using the 10/1000 µs waveform. This value is measured per JEDEC-standard test conditions and represents the worst-case voltage seen by downstream circuitry during a defined surge event.
Can DM5W43A-13 be used in bidirectional configurations?
No-it is a unidirectional TVS diode with anode-heatsink polarity. For bidirectional protection, two devices must be connected in series opposition, or a dedicated bidirectional part such as DM5W43CA must be selected; the datasheet does not specify symmetrical breakdown behavior.
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 directly bonded to the anode, achieving RθJC = 1.1 °C/W-36× better than SMAJ43A and 9× better than SMCJ43A. This allows efficient heat transfer to PCB copper, sustaining higher average power without thermal throttling.
Is DM5W43A-13 compliant with AEC-Q200 for automotive use?
Yes-the DM5W43A-13 is qualified to AEC-Q200 stress test requirements for passive components, including temperature cycling, humidity bias, and surge endurance. The automotive-grade variant DM5W43AQ is separately qualified and documented, but this part meets the same reliability baseline per Diodes' internal qualification records.
DM5W43A-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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM5W43A-13 FAQ
1.How can I place an order for DM5W43A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W43A-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 DM5W43A-13 reliable?
The price and inventory of DM5W43A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W43A-13 is usually 5 days.
3.What payment methods are accepted for DM5W43A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W43A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W43A-13?
DM5W43A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W43A-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 DM5W43A-13?
For technical support, including DM5W43A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W43A-13 requirements.
6.How does Aetrix verify that DM5W43A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W43A-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 DM5W43A-13 meets industry standards.
7.What is the process for return or replacement of DM5W43A-13?
All DM5W43A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W43A-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 DM5W43A-13 part is unused and in its original packaging.
Return procedure for DM5W43A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W43A-13 Tags
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