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Diodes Incorporated SMCJ26AQ-13-F
- Part No.:
- SMCJ26AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ26AQ-13-F.pdf
- Description:
- TVS DIODE 26VWM 42.1VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,319
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Product details
Overview
SMCJ26AQ-13-F from Diodes Incorporated is a unidirectional 1,500W automotive transient voltage suppressor (TVS) diode with 26V reverse standoff voltage, 42.1V max clamping voltage at 35.6A peak pulse current, and AEC-Q101 qualification for under-hood engine control units protecting against ISO7637-2 Pulse 1 (−100V), Pulse 2a (+50V), and ISO10605 ESD (±30kV).
For engineers reviewing the SMCJ26AQ-13-F datasheet, SMCJ26AQ-13-F pinout, SMCJ26AQ-13-F application, or SMCJ26AQ-13-F equivalent, key selection criteria include clamping voltage margin vs. system rail, peak pulse current handling under ISO7637-2 Pulse 3b (+100V), thermal derating above +25°C ambient, and SMC package solderability per MIL-STD-202.
Technical Context
This unidirectional TVS diode uses glass-passivated junction construction to achieve fast response time (<1.0 ns) and stable breakdown behavior across −55°C to +150°C operating temperature range. It is designed for single-line protection in 12V/24V automotive power nets where low leakage (<5 µA at 26V) and repeatable clamping performance are required.
The device complies with ISO10605 (±30kV air/contact discharge) and ISO7637-2 (Pulse 1, 2a, 3a, 3b) surge waveforms, with clamping validated per 10 × 1000 µs waveform and peak power derated linearly above +25°C ambient per Fig. 1 in DS40741 Rev. 8-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains 10×1000µs transients without failure in automotive load-dump scenarios |
| Reverse Standoff Voltage (VRWM) | 26V - maximum continuous DC voltage before significant leakage; matches 24V nominal systems |
| Breakdown Voltage (VBR) | 28.9–31.9V @ 1.0mA - ensures reliable turn-on before downstream IC damage thresholds |
| Max Clamping Voltage (VC) | 42.1V @ 35.6A - limits transient voltage seen by protected circuitry during ISO7637-2 Pulse 1 |
| Peak Pulse Current (IPP) | 35.6A - supports full energy absorption of ISO7637-2 Pulse 3b (+100V, 50Ω source) |
| Leakage Current (IR) | <5.0µA @ 26V - avoids parasitic loading on always-on vehicle bus lines |
| Operating Temperature | −55°C to +150°C - qualified for under-hood placement near engine control modules |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight, cathode band polarity indicator. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines conduction direction in unidirectional configuration |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., LIN bus, sensor supply); clamps to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use with PPAP capability and IATF 16949 manufacturing |
| Glass passivated die | Enables stable VBR over temperature and long-term reliability in high-humidity under-hood environments |
| Lead-free & RoHS 3 compliant | Matte tin plating meets EU Directive 2015/863/EU; halogen- and antimony-free "Green" construction |
| Fast response time | <1.0 ns turn-on ensures clamping occurs before sensitive MCU I/O pins experience overstress |
| ISO7637-2 & ISO10605 certified | Tested to defined surge waveforms and ESD levels-no additional validation needed for Tier 1 compliance submissions |
Applications
| Engine Control Unit (ECU) Power Input | LIN Bus Transceiver Protection |
|---|---|
Use Scenario: 12V battery feed to microcontroller power supply in gasoline/diesel engine management systems exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp transients before regulation. Use Value: 42.1V clamping ensures protected LDO remains below absolute maximum rating (typically 45V) during ISO7637-2 Pulse 1 (−100V). |
Use Scenario: LIN physical layer transceiver (e.g., TJA1020) connected to vehicle body wiring harness subject to ESD and coupled noise. IC Role / Device Role / Timing Role: Bidirectional-capable layout (though SMCJ26AQ is unidirectional) used on LIN bus line with ground reference. Use Value: 35.6A IPP rating handles worst-case ISO10605 contact discharge energy without degradation after repeated events. |
| Body Control Module (BCM) Sensor Inputs | Automotive Camera Power Rail |
Use Scenario: Analog sensor inputs (e.g., temperature, pressure) routed through door modules or pillar harnesses prone to cable-borne surges. IC Role / Device Role / Timing Role: TVS placed at connector entry point, shunting transients to chassis ground before signal conditioning amplifier. Use Value: 5µA max leakage at 26V prevents DC offset errors in precision ratiometric sensor bridges. |
Use Scenario: 12V input to image sensor SoC (e.g., Sony IMX series) in rear-view or surround-view camera modules mounted externally. IC Role / Device Role / Timing Role: Primary overvoltage protection on main power rail upstream of DC-DC converter. Use Value: 1500W peak power rating absorbs full energy of ISO7637-2 Pulse 3b (+100V, 50Ω) without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC26-13-F | Same VRWM (26V), lower PPK (600W), higher VC (45.7V @ 13.1A) | Not suitable for ISO7637-2 Pulse 1; limited to lower-energy ESD-only zones | Select only for cost-sensitive interior modules with no load-dump exposure |
| SMCJ26A-Q | Identical electrical specs but non-AEC-Q101; same SMC package and marking | Lacks PPAP documentation and IATF 16949 traceability; not accepted for safety-critical ECUs | Acceptable for non-automotive industrial 24V systems requiring identical clamping performance |
Compared with SAC26-13-F, SMCJ26AQ-13-F delivers 2.5× higher surge energy handling and tighter clamping for robust engine-bay deployment; versus SMCJ26A-Q, it adds AEC-Q101 certification and automotive change control-critical for OEM production release.
Availability
SMCJ26AQ-13-F is available at Aetrix Electronics and suitable for engine control units, LIN bus networks, body control modules, and automotive camera power rails requiring stable component supply with full automotive qualification documentation.
Supply support for SMCJ26AQ-13-F 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design and manufacturing facilities certified to IATF 16949 for automotive-grade components.
The SMCJ series targets automotive transient suppression, delivering AEC-Q101-qualified TVS diodes optimized for ISO7637-2 and ISO10605 compliance in harsh under-hood and chassis-mounted applications.
FAQ
Is SMCJ26AQ-13-F bidirectional or unidirectional?
SMCJ26AQ-13-F is unidirectional, indicated by the absence of the 'C' suffix in the part number. It conducts only during negative transients relative to its cathode, making it suitable for DC power rail protection where polarity is fixed. Bidirectional versions (e.g., SMCJ26CAQ-13-F) include the 'C' and protect both polarities.
What is the maximum steady-state power dissipation at +75°C lead temperature?
The steady-state power dissipation (PM(AV)) is 5.0W at TL = +75°C, as specified in the Maximum Ratings table. This value decreases linearly with increasing lead temperature beyond +75°C, following the derating curve in Figure 6 of DS40741 Rev. 8-2.
Does SMCJ26AQ-13-F meet AEC-Q101 requirements for temperature cycling and HTRB?
Yes-SMCJ26AQ-13-F is fully AEC-Q101 qualified, including temperature cycling (−55°C to +125°C, 1000 cycles), high-temperature reverse bias (HTRB at +150°C for 1000 hours), and other stress tests defined in the AEC-Q101 standard for discrete semiconductors.
Can SMCJ26AQ-13-F be used in 48V mild-hybrid automotive systems?
No-its 26V VRWM and 42.1V clamping voltage are designed for 12V/24V systems. For 48V architectures, Diodes offers SMCJ58AQ-13-F (58V VRWM, 93.6V clamping) or SMCJ64AQ-13-F (64V VRWM, 103V clamping), both AEC-Q101 qualified and tested to ISO7637-2 Pulse 5a/b.
SMCJ26AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- 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):
- 35.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
SMCJ26AQ-13-F FAQ
1.How can I place an order for SMCJ26AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ26AQ-13-F 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 SMCJ26AQ-13-F reliable?
The price and inventory of SMCJ26AQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ26AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ26AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ26AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ26AQ-13-F?
SMCJ26AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ26AQ-13-F 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 SMCJ26AQ-13-F?
For technical support, including SMCJ26AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ26AQ-13-F requirements.
6.How does Aetrix verify that SMCJ26AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ26AQ-13-F 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 SMCJ26AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ26AQ-13-F?
All SMCJ26AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ26AQ-13-F, 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 SMCJ26AQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ26AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ26AQ-13-F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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