My Inquiry
My Account
Diodes Incorporated DM8W26A-13
- Part No.:
- DM8W26A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W26A-13.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DM8W26A-13 from Diodes Incorporated is a unidirectional 6600W surface-mount transient voltage suppressor (TVS) designed for automotive load dump and ISO7637-2 surge protection in high-reliability power rail applications. It features a 26V reverse standoff voltage (VRWM), 28.9–31.9V breakdown voltage (VBR), 42.1V clamping voltage (VC) at 157A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the DM8W26A-13 datasheet, DM8W26A-13 pinout, DM8W26A-13 application, or DM8W26A-13 equivalent, key selection criteria include its DO-218 package thermal resistance (RθJC = 0.9°C/W), 8W steady-state power dissipation, ISO16750-2 Pulse A/B compliance, and unidirectional polarity with heatsink-as-anode configuration.
Technical Context
This TVS diode employs a planar junction structure optimized for high-energy transients in 12V/24V automotive systems. Its 6600W peak pulse power (10/1000µs) and 700A IFSM rating enable robust protection against load dump surges up to 10ms exponential waveforms, validated per ISO16750-2.
The device exhibits low thermal impedance (RθJC = 0.9°C/W) and maintains stable clamping performance across –55°C to +175°C operating range. Its unidirectional architecture ensures forward conduction only during overvoltage events, with cathode marked by bar and anode integrated into the heatsink tab.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W (10/1000µs waveform): sustains single high-energy surges without failure in automotive load dump scenarios |
| Reverse Standoff Voltage | 26V: sets minimum operating voltage threshold before clamping activates in 24V system rails |
| Clamping Voltage | 42.1V @ 157A: limits downstream voltage stress during worst-case transient events |
| Breakdown Voltage | 28.9–31.9V @ 5mA: defines precise turn-on range for predictable surge response |
| Thermal Resistance | 0.9°C/W (Junction-to-Case): enables efficient heat transfer to PCB/heatsink under sustained 8W average dissipation |
| Operating Temperature | –55°C to +175°C: supports under-hood deployment in extreme automotive environments |
| Surge Standards | ISO16750-2 Pulse A/B & ISO7637-2 Pulse 1/2a/3a/3b: certified for full automotive electrical compatibility |
Pinout & Package
Package: DO-218 (Type E), molded plastic UL 94V-0 housing with matte tin-plated terminals; heatsink tab serves as anode terminal; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Heatsink Tab | Anode | Primary current path and thermal interface; must be soldered to large copper area for thermal management |
| Top Surface Bar Mark | Cathode Indicator | Visual polarity reference; cathode connects to protected circuit side during surge clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction Temperature Rating | TJ = +175°C: enables reliable operation in engine compartment environments without derating |
| Lead-Free & Halogen-Free | RoHS 3 compliant with <900ppm Br/Cl and <1000ppm Sb: meets global automotive environmental mandates |
| High Surge Current Capability | 700A IFSM (8.3ms half-sine): withstands repetitive load dump events without degradation |
| Stable High-Temperature Leakage | 150µA max IR at VRWM and TJ = +175°C: prevents false triggering in hot-start conditions |
| AEC-Q Qualified | Qualified to JEDEC standards referenced in AEC-Q: validates suitability for automotive production use |
Applications
| Automotive Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power inputs from alternator load dump surges during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS clamps 12V rail to ≤42.1V during 10ms exponential transients. Use Value: Prevents latch-up or permanent damage to 3.3V/5V LDOs and MCU VDD pins in harsh under-hood environments. |
Use Scenario: Shields LIN bus transceivers and window motor drivers from ISO7637-2 Pulse 2a induced spikes. IC Role / Device Role / Timing Role: Fast-response clamping element placed at 12V input filter stage before DC-DC converters. Use Value: Maintains signal integrity and prevents reset faults during door actuation or lighting load switching. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Control Unit |
Use Scenario: Safeguards image sensor bias supplies and serializer ICs against coupled transients from nearby high-current actuators. IC Role / Device Role / Timing Role: Primary overvoltage protection at 12V input connector, upstream of buck regulators. Use Value: Ensures uninterrupted video streaming by limiting voltage excursions to levels compatible with 28V-rated input capacitors. |
Use Scenario: Guards motor gate drivers and position sensor interfaces from back-EMF spikes during steering column torque transients. IC Role / Device Role / Timing Role: High-power TVS placed across H-bridge supply rails to absorb regenerative energy surges. Use Value: Eliminates need for external snubbers while maintaining ASIL-B functional safety compliance via predictable clamping behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Lower peak power (400W), SMA package (RθJC ≈ 45°C/W), 43.5V clamping @ 92.5A | Targeted at low-energy board-level ESD; insufficient for ISO16750-2 load dump | Select only for non-automotive 24V industrial controls with <100W surge requirements |
| SMCJ26A | 3000W peak power, SMC package (RθJC ≈ 10°C/W), 42.5V clamping @ 70.7A | Valid for ISO7637-2 Pulse 1/2a but fails Pulse 5a load dump compliance | Acceptable for cost-sensitive BCM designs where full load dump immunity is not mandated |
Compared with SMAJ26A and SMCJ26A, DM8W26A-13 delivers 2.2× higher peak power and 11× lower thermal resistance-enabling direct integration into high-reliability automotive power rails without auxiliary heatsinking or derating.
Availability
DM8W26A-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for DM8W26A-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 and industrial markets.
DM8W26A-13 belongs to Diodes' automotive-grade TVS portfolio engineered specifically for ISO16750-2 and ISO7637-2 compliance in 12V/24V vehicle electrical architectures.
FAQ
What is the maximum clamping voltage of DM8W26A-13 under standard test conditions?
The DM8W26A-13 has a maximum clamping voltage (VC) of 42.1V when subjected to a 10/1000µs waveform at 157A peak pulse current. This value is measured at TA = +25°C with terminals held at ambient temperature, and remains stable across its full operating temperature range due to its planar junction design and low RθJC.
Can DM8W26A-13 be used in bidirectional surge protection circuits?
No. DM8W26A-13 is unidirectional only, with the heatsink tab designated as the anode and the top surface bar marking the cathode. Bidirectional protection requires two series-opposed devices or a dedicated bidirectional TVS such as the DM8W26CA-13 variant, which is not offered in this series.
How does the DO-218 package improve thermal performance compared to SMA or SMC packages?
The DO-218 (Type E) package provides a direct metal heatsink interface with RθJC = 0.9°C/W-over 10× lower than SMA (≈45°C/W) and ~11× lower than SMC (≈10°C/W). This allows the DM8W26A-13 to dissipate 8W continuously at TC = +25°C without external heatsinking, critical for sustained load dump events.
Is DM8W26A-13 qualified for automotive production use?
Yes. DM8W26A-13 is qualified to JEDEC standards referenced in AEC-Q, and its automotive-compliant counterpart DM8W26AQ-13 is explicitly rated for automotive applications. The part meets ISO16750-2 Pulse A/B and ISO7637-2 Pulse 1/2a/3a/3b requirements, with full RoHS 3 and halogen-free compliance documented in Diodes' quality certifications.
DM8W26A-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):
- 157A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
DM8W26A-13 FAQ
1.How can I place an order for DM8W26A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W26A-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 DM8W26A-13 reliable?
The price and inventory of DM8W26A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W26A-13 is usually 5 days.
3.What payment methods are accepted for DM8W26A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W26A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W26A-13?
DM8W26A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W26A-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 DM8W26A-13?
For technical support, including DM8W26A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W26A-13 requirements.
6.How does Aetrix verify that DM8W26A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W26A-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 DM8W26A-13 meets industry standards.
7.What is the process for return or replacement of DM8W26A-13?
All DM8W26A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W26A-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 DM8W26A-13 part is unused and in its original packaging.
Return procedure for DM8W26A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W26A-13 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
