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Diodes Incorporated DM5W26A-13
- Part No.:
- DM5W26A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W26A-13.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:7,775
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Product details
Overview
DM5W26A-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 26 V reverse standoff voltage, 42.1 V max clamping voltage at 86 A peak pulse current, 3600 W peak pulse power (10/1000 µs), and DO-218 package with anode-heatsink polarity. It is qualified per AEC-Q standards for high-reliability automotive applications.
For engineers reviewing the DM5W26A-13 datasheet, DM5W26A-13 pinout, DM5W26A-13 application, or DM5W26A-13 equivalent, key selection criteria include clamping voltage margin vs. system rail, thermal resistance (1.1 °C/W junction-to-case), ISO16750-2 load dump compliance, and DO-218 mechanical layout compatibility with high-power PCB heatsinking.
Technical Context
This unidirectional TVS diode operates in avalanche breakdown mode to clamp transients above its 26 V VRWM. Its low RθJC (1.1 °C/W) enables effective heat transfer to the PCB heatsink, supporting sustained 5 W average power dissipation at TC = +25°C and derated operation up to +175°C junction temperature.
The device meets ISO 10605 (Pulse A/B), ISO 7637-2 (Pulse 1, 2a, 3a, 3b), and ISO 16750-2 load dump requirements. Its 86 A IPP rating at 10/1000 µs waveform ensures robust suppression of high-energy automotive surges without degradation under specified duty cycles (≤4 pulses/minute).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for 12 V automotive circuits. |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 5 mA test current; defines turn-on consistency across production lots. |
| VC @ IPP | 42.1 V @ 86 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on downstream ICs during worst-case load dump. |
| PPK | 3600 W - Peak non-repetitive surge power handling capability; validates suitability for ISO16750-2 Category III/IV load dump events. |
| RθJC | 1.1 °C/W - Junction-to-case thermal resistance; enables direct heatsink coupling to PCB copper area for thermal management. |
| TJ Range | −55 °C to +175 °C - Operating junction temperature range; supports under-hood deployment in modern engine control units. |
| IFSM | 500 A - Peak forward surge current rating (8.3 ms half-sine); confirms robustness against battery reversal or jump-start transients. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, anode-heatsink configuration. Molded plastic body (UL 94V-0), matte tin-plated terminals, polarity indicated by cathode bar marking. Weight: 2.74 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Main current path input during clamping | Electrically and thermally connected to large PCB copper pour; must be routed to ground plane or chassis for thermal and ESD return path. |
| Cathode (Marked Pin) | Clamping output node | Connected to protected line (e.g., 12 V rail); voltage referenced to anode during surge event; requires low-inductance trace routing. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Enables single-device protection against ISO16750-2 load dump (up to 35 V, 100 ms exponential) without cascaded TVS staging. |
| Low RθJC (1.1 °C/W) | Reduces thermal bottleneck between junction and PCB heatsink, allowing >4× higher steady-state power handling than SMC-packaged equivalents. |
| AEC-Q qualified reliability | Validated for automotive under-hood environments including temperature cycling, humidity bias, and mechanical shock per AEC-Q200. |
| Lead-free, halogen-free "Green" construction | Complies with RoHS 3 (2015/863/EU) and JEDEC J-STD-020 moisture sensitivity level 1-no bake required prior to reflow. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: 12 V battery-fed microcontroller power rail exposed to alternator load dump and cranking transients. IC Role / Device Role: Primary clamping element placed upstream of DC-DC converter input. Use Value: Limits transient voltage to ≤42.1 V, preventing overvoltage damage to 40 V-rated buck controllers and ensuring uninterrupted MCU operation. |
Use Scenario: CAN transceiver VCC line subjected to coupled surges from adjacent high-current loads (e.g., window motors, seat actuators). IC Role / Device Role: Secondary rail protector co-located with CAN PHY to suppress common-mode surges entering via power pins. Use Value: Maintains <10 µA leakage at 26 V, avoiding quiescent current penalty while clamping fast-rising edges (<1 ns) before they disrupt differential signaling. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver Stage |
Use Scenario: 12 V input to image sensor SoC and ISP in front-facing camera module mounted near radiator. IC Role / Device Role: First-line defense against thermal-induced voltage spikes and ESD from connector mating. Use Value: −55 °C to +175 °C operating range ensures stable clamping performance across ambient extremes without parameter drift. |
Use Scenario: High-side gate driver supply rail in three-phase EPS motor controller exposed to inductive kickback and battery reversal. IC Role / Device Role: Bidirectional surge shunt when used with complementary TVS or as standalone unidirectional clamp on VDD rail. Use Value: 500 A IFSM rating withstands repeated 8.3 ms motor stall currents without bond wire fusing or parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Lower PPK (400 W), SMA package, RθJC ≈ 50 °C/W, no AEC-Q qualification | Limited to non-automotive, low-energy industrial I/O protection; unsuitable for load dump | Select only for cost-sensitive consumer applications where ISO16750-2 compliance is not required. |
| SMCJ26A-Q | Same PPK (3000 W), SMC package, RθJC ≈ 3.5 °C/W, AEC-Q200 qualified | Lower thermal efficiency than DO-218; requires larger PCB footprint and additional thermal vias for equivalent power handling | Choose when DO-218 assembly infrastructure is unavailable but AEC-Q and 3 kW surge capability are mandatory. |
Compared with SMAJ26A and SMCJ26A-Q, DM5W26A-13 delivers 20% higher peak power, 3× better thermal resistance, and DO-218's integrated heatsink tab-enabling smaller board area, fewer thermal vias, and guaranteed load dump compliance in space-constrained automotive modules.
Availability
DM5W26A-13 is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply with full automotive qualification and long-term lifecycle support.
Supply support for DM5W26A-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 protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
DM5W26A-13 belongs to Diodes' automotive-grade TVS portfolio engineered specifically for ISO7637-2 and ISO16750-2 compliance, emphasizing thermal robustness, surge repeatability, and under-hood environmental resilience.
FAQ
What is the maximum allowable case temperature for continuous operation?
The DM5W26A-13 supports continuous operation up to +175°C case temperature, with power derating beginning linearly above +25°C per Figure 1 in DS40426. At TC = +125°C, PM(AV) reduces to approximately 2.5 W. Thermal design must ensure heatsink interface resistance remains below 0.5 °C/W to maintain safe junction temperatures.
Does DM5W26A-13 meet ISO16750-2 Category IV load dump requirements?
Yes. With 3600 W peak pulse power and 42.1 V clamping at 86 A, DM5W26A-13 exceeds ISO16750-2 Category IV (35 V, 100 ms exponential waveform) requirements when mounted on ≥250 mm² 2 oz copper with ≥6 thermal vias. Test data per Figure 2 confirms 4500 W load dump capability at TC = +25°C.
Can DM5W26A-13 be used in bidirectional configurations?
No. DM5W26A-13 is unidirectional with anode-heatsink polarity. For bidirectional protection, two devices must be connected anode-to-anode or a dedicated bidirectional TVS (e.g., DM5W26CA) must be selected. Reverse connection will result in forward conduction and permanent failure.
What is the recommended PCB pad layout for optimal thermal performance?
Use the DO-218 (Type E) suggested pad layout from Diodes' package outline document: 11.00 mm × 3.50 mm anode tab pad with ≥6 × 0.3 mm thermal vias spaced ≤2 mm apart, connected to inner-layer ground planes. Cathode pad: 3.00 mm × 9.50 mm. Minimum solder mask opening matches copper pad dimensions to maximize thermal conduction.
DM5W26A-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 86A
- 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
DM5W26A-13 FAQ
1.How can I place an order for DM5W26A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W26A-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 DM5W26A-13 reliable?
The price and inventory of DM5W26A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W26A-13 is usually 5 days.
3.What payment methods are accepted for DM5W26A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W26A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W26A-13?
DM5W26A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W26A-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 DM5W26A-13?
For technical support, including DM5W26A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W26A-13 requirements.
6.How does Aetrix verify that DM5W26A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W26A-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 DM5W26A-13 meets industry standards.
7.What is the process for return or replacement of DM5W26A-13?
All DM5W26A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W26A-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 DM5W26A-13 part is unused and in its original packaging.
Return procedure for DM5W26A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W26A-13 Tags
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