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Diodes Incorporated DM5W22A-13
- Part No.:
- DM5W22A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W22A-13.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:3,488
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Product details
Overview
DM5W22A-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 22 V reverse standoff voltage, 35.5 V clamping voltage at 101 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 for high-reliability automotive applications.
For engineers reviewing the DM5W22A-13 datasheet, DM5W22A-13 pinout, DM5W22A-13 application, or DM5W22A-13 equivalent, key selection criteria include clamping performance under ISO16750-2 load dump, thermal resistance (1.1 °C/W junction-to-case), low leakage (<10 µA at 22 V), and compliance with ISO10605 ESD and RoHS/Green requirements.
Technical Context
This TVS diode operates as a unidirectional, anode-grounded surge clamp in automotive power rail protection circuits. Its breakdown voltage (24.4–26.9 V at 5 mA) ensures robust triggering above nominal 12 V battery systems while maintaining low leakage (<10 µA at VRWM) and stable clamping (35.5 V max at 101 A).
The DO-218 package enables direct heatsink mounting via the anode terminal, delivering 1.1 °C/W thermal resistance and supporting continuous 5 W power dissipation at TC = +25°C. It meets ISO7637-2 Pulse 1/2a/3a/3b and ISO16750-2 load dump waveforms without derating up to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; matches 12 V automotive system nominal with margin for transients. |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown occurs within this range at 5 mA; guarantees reliable turn-on before damaging overvoltage. |
| VC @ IPP | 35.5 V at 101 A - Clamping voltage during 10/1000 µs surge; limits downstream IC stress to safe levels during load dump. |
| PPK | 3600 W - Peak pulse power handling capability; sustains ISO16750-2 load dump surges without failure. |
| RθJC | 1.1 °C/W - Junction-to-case thermal resistance; enables efficient heat transfer to heatsink for sustained reliability. |
| TJ Range | −55 °C to +175 °C - Extended operating temperature range; supports under-hood placement in modern vehicles. |
| IR @ VRWM | <10 µA - Low reverse leakage at rated standoff; minimizes standby power loss in always-on vehicle modules. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, anode-connected heatsink configuration. Polarity indicated by cathode bar marking; anode is electrically connected to the heatsink tab for low-inductance, high-current surge path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path during clamping | Direct thermal and electrical connection to PCB heatsink; reduces impedance and improves surge current handling. |
| Cathode (Marked Lead) | Surge input terminal | Connected to protected line (e.g., battery rail); initiates avalanche conduction when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Withstands ISO16750-2 load dump surges (10 ms exponential) up to 4500 W at TC = +25°C per Fig. 2. |
| Low RθJC (1.1 °C/W) | Enables >5 W steady-state dissipation with minimal case-to-ambient delta-T; critical for engine compartment reliability. |
| AEC-Q qualified | Qualified per JEDEC standards referenced in AEC-Q200; validated for automotive-grade lifetime and environmental stress. |
| RoHS & Green compliant | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); meets EU Directive 2015/863/EU and automotive sustainability mandates. |
| ISO7637-2 & ISO10605 compliant | Validated against Pulse 1, 2a, 3a, 3b and ESD Pulse A/B; eliminates need for external filtering in CAN/LIN node protection. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
|
Use Scenario: Protects microcontroller and CAN transceiver power inputs from alternator load dump events during ignition-off transitions. IC Role / Device Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, with anode tied to chassis ground heatsink. Use Value: Limits transient voltage to ≤35.5 V during 101 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic supplies. |
Use Scenario: Shields LIN bus transceivers and LED drivers from ISO7637-2 Pulse 3b (capacitive coupling) in door module wiring harnesses. IC Role / Device Role: Primary surge suppression on 12 V supply line upstream of LDO regulators; mounted directly to metal bracket. Use Value: Achieves <10 µA leakage at 22 V, minimizing quiescent current in always-on BCM sleep modes (<100 µA total). |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
|
Use Scenario: Safeguards image sensor and serializer ICs from battery rail transients induced by nearby solenoid actuation in front camera modules. IC Role / Device Role: Fast-response clamping device placed adjacent to DC-DC converter input capacitor; leverages low RθJC for thermal stability. Use Value: Maintains clamping performance across −40 °C to +125 °C ambient, ensuring consistent protection during cold-start and hot-soak conditions. |
Use Scenario: Protects H-bridge gate drivers and current sense amplifiers from inductive kickback during EPS motor commutation faults. IC Role / Device Role: High-energy TVS mounted on heatsink near motor driver IC; anode grounded to reduce loop inductance. Use Value: Handles 500 A non-repetitive forward surge (IFSM), surviving multiple fault events without degradation in torque-control-critical systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Lower PPK (400 W), SMA package, RθJC ≈ 50 °C/W, no AEC-Q qualification | Not suitable for load dump; limited to low-energy ISO7637-2 Pulse 3a/b only | Select only for cost-sensitive non-automotive industrial use where thermal and surge demands are lower. |
| SMCJ22A-Q | Same DO-214AB package as SMAJ but AEC-Q200 qualified; PPK = 1500 W, VC = 35.5 V, IFSM = 200 A | Meets ISO7637-2 but not ISO16750-2 load dump; insufficient for 3600 W requirement | Use where space constraints prevent DO-218 mounting but AEC-Q compliance is mandatory; requires parallel devices for load dump. |
Compared with SMAJ22A and SMCJ22A-Q, DM5W22A-13 uniquely delivers full ISO16750-2 load dump immunity in a single-device, heatsink-mountable solution-enabling simplified layout, higher reliability, and elimination of thermal derating compromises in under-hood automotive designs.
Availability
DM5W22A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering systems requiring stable component supply and automotive-grade surge resilience.
Supply support for DM5W22A-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.
DM5W22A-13 belongs to the DM5WxxA series of high-power automotive TVS diodes, engineered specifically to meet ISO16750-2 load dump and ISO7637-2 surge immunity requirements in harsh-temperature vehicle environments.
FAQ
What is the maximum clamping voltage of DM5W22A-13 under standard test conditions?
The maximum clamping voltage (VC) is 35.5 V when subjected to a 10/1000 µs waveform at 101 A peak pulse current. This value is guaranteed across the full operating temperature range (−55 °C to +175 °C) and ensures downstream circuitry remains below safe overvoltage thresholds during automotive transients.
How is polarity identified on the DM5W22A-13 DO-218 package?
Polarity is marked with a cathode bar on the top surface of the device; the heatsink tab is the anode terminal. This configuration allows direct mounting to a grounded metal heatsink, reducing parasitic inductance and improving surge current handling efficiency in high-dI/dt automotive applications.
Does DM5W22A-13 meet AEC-Q200 requirements for automotive qualification?
Yes-DM5W22A-13 is qualified to JEDEC standards referenced in AEC-Q200, including temperature cycling, humidity bias, mechanical shock, and high-temperature operating life testing. It is explicitly designated for automotive use in the official Diodes datasheet DS40426 Rev. 6-2.
Can DM5W22A-13 be used in bidirectional surge protection configurations?
No-it is a unidirectional TVS diode optimized for anode-grounded (cathode-to-line) operation. For bidirectional protection, Diodes offers the complementary DM5W22CA-13 variant; mixing unidirectional and bidirectional devices in the same design requires careful analysis of system grounding and transient polarity.
DM5W22A-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 101A
- 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
DM5W22A-13 FAQ
1.How can I place an order for DM5W22A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W22A-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 DM5W22A-13 reliable?
The price and inventory of DM5W22A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W22A-13 is usually 5 days.
3.What payment methods are accepted for DM5W22A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W22A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W22A-13?
DM5W22A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W22A-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 DM5W22A-13?
For technical support, including DM5W22A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W22A-13 requirements.
6.How does Aetrix verify that DM5W22A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W22A-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 DM5W22A-13 meets industry standards.
7.What is the process for return or replacement of DM5W22A-13?
All DM5W22A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W22A-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 DM5W22A-13 part is unused and in its original packaging.
Return procedure for DM5W22A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W22A-13 Tags
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