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Vishay General Semiconductor - Diodes Division SMAJ26C-E3/61
- Part No.:
- SMAJ26C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ26C-E3/61.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,802
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Product details
Overview
SMAJ26C-E3/61 from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features a 26 V stand-off voltage (VWM), 46.6 V maximum clamping voltage (VC) at 8.6 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the SMAJ26C-E3/61 datasheet, SMAJ26C-E3/61 pinout, SMAJ26C-E3/61 application, or SMAJ26C-E3/61 equivalent, key selection criteria include bi-directional surge handling capability, low clamping ratio (VC/VWM = 1.79), RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 28.9 V and 35.3 V at 1 mA test current. Its clamping behavior is defined under standardized 10/1000 µs surge conditions, delivering consistent protection without polarity dependence.
Thermal performance is characterized by 120 °C/W junction-to-ambient thermal resistance (RθJA) on 0.2 × 0.2" copper pads and 30 °C/W junction-to-lead (RθJL). It supports operating junction temperatures from –55 °C to +150 °C and meets J-STD-020 MSL Level 1 reflow profile (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for protected line. |
| VC @ IPPM | 46.6 V - Clamped voltage during 8.6 A 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 400 W - Peak pulse power dissipation capability; enables robust transient suppression without failure. |
| IPPM | 8.6 A - Peak surge current handled at VC; derived from standardized waveform per ANSI/IEEE C62.35. |
| VBR min/max | 28.9 V / 35.3 V - Breakdown voltage range at 1 mA; ensures reliable turn-on across manufacturing tolerance. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; negligible loading on high-impedance signal paths. |
| TJ range | –55 °C to +150 °C - Full operational junction temperature range; validated for under-hood automotive use. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals for AC-coupled or bidirectional signal line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Either terminal serves as input/output; no cathode band - enables flexible layout on differential or AC lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional operation | Enables single-device protection of AC signals, data buses, or ungrounded power rails without polarity constraints. |
| 400 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) common in automotive and industrial environments. |
| Low clamping ratio (1.79) | VC/VWM = 46.6/26 ensures minimal overvoltage exposure to protected ICs during surge events. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; compatible with high-volume SMT assembly. |
| RoHS-compliant matte tin leads | Meets J-STD-002 and JESD22-B102 solderability standards; E3 suffix passes JESD201 Class 1A whisker testing. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to load dump and inductive switching noise in engine control units. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector entry point to shunt transients before reaching ADC front-end or signal conditioner. Use Value: Limits induced surges to ≤46.6 V, preserving sensor accuracy and preventing latch-up in 3.3 V or 5 V interface ICs. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD and fast transients in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Paired SMAJ26C-E3/61 devices (one per line) provide symmetrical clamping without disrupting differential signaling integrity. Use Value: Maintains <1.5 ns response time and <10 pF junction capacitance at 26 V bias, avoiding CAN bit timing distortion. |
| Consumer USB Port ESD Protection | Telecom Power Rail Clamp |
Use Scenario: Secondary-level ESD protection on VBUS and D+/D− lines of USB 2.0 ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Standoff voltage (26 V) exceeds USB 5 V max, enabling low-leakage (<1 µA) operation while clamping ±15 kV contact ESD per IEC 61000-4-2. Use Value: Prevents damage to USB transceivers without affecting signal rise/fall times due to minimal parasitic capacitance. |
Use Scenario: Input rail protection for 24 V DC-powered telecom equipment subjected to lightning-induced surges on PoE or auxiliary supplies. IC Role / Device Role / Timing Role: Mounted at board edge with 0.2 × 0.2" copper pads to sustain 400 W pulses per IEEE C62.41 guidelines. Use Value: Absorbs up to 8.6 A transient current without degradation, ensuring system uptime during outdoor surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA-E3/61 | Same electrical specs and package; CA suffix denotes identical bi-directional construction per Vishay documentation. | No functional difference - CA and C suffixes are interchangeable per Vishay's ordering note on page 4. | Select SMAJ26CA-E3/61 only if legacy BOM specifies CA; otherwise SMAJ26C-E3/61 is functionally identical. |
| SMCJ26CA | Higher 1500 W PPPM, DO-214AB (SMB) package, 12.5 A IPPM, same VWM/VC ratings. | Better suited for higher-energy threats (e.g., ISO 16750-2); requires larger PCB footprint and different pad layout. | Choose SMCJ26CA when surge threat level exceeds 400 W; not drop-in due to larger SMB package and thermal design impact. |
Compared with SMAJ26C-E3/61, SMAJ26CA-E3/61 offers identical protection performance in the same DO-214AC footprint, while SMCJ26CA provides higher energy handling at the cost of increased size and thermal mass - making SMAJ26C-E3/61 optimal for space-constrained 400 W-class designs.
Availability
SMAJ26C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB ports, and telecom power rail protection requiring stable component supply across production lifecycles.
Supply support for SMAJ26C-E3/61 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and transient protection devices with emphasis on reliability and AEC-Q101 qualification.
The SMAJ series is engineered for robust electrostatic and surge protection in harsh environments, targeting automotive, industrial, and telecom applications where compact size and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMAJ26C-E3/61 under a 10/1000 µs surge?
The SMAJ26C-E3/61 clamps to a maximum of 46.6 V when subjected to its rated 8.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and process variation per Vishay Document 88390, ensuring predictable overvoltage limiting for protected circuitry.
Is SMAJ26C-E3/61 suitable for automotive applications?
Yes, SMAJ26C-E3/61 meets AEC-Q101 requirements for high-reliability automotive use when ordered with the HE3 suffix (e.g., SMAJ26CHE3/61). The base SMAJ26C-E3/61 is commercial grade but shares identical electrical specs and DO-214AC packaging - widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment interfaces.
Does SMAJ26C-E3/61 have polarity markings?
No, SMAJ26C-E3/61 is a bi-directional TVS device with no cathode band or polarity marking. Its symmetrical construction allows either terminal to serve as input or output, simplifying layout for AC-coupled or differential signal lines - confirmed in the "Polarity" section of Vishay Document 88390.
What is the maximum reverse leakage current for SMAJ26C-E3/61 at rated VWM?
The SMAJ26C-E3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 26 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage ensures minimal power loss and signal interference in high-impedance sensing or communication circuits protected by the device.
Can SMAJ26C-E3/61 be used in place of SMAJ26A-E3/61?
No - SMAJ26C-E3/61 is bi-directional, while SMAJ26A-E3/61 is uni-directional with a cathode band. Substituting them risks incorrect clamping behavior on negative-going transients. The "C" and "A" suffixes denote fundamental structural differences; Vishay explicitly separates their electrical tables and application guidance in Document 88390.
SMAJ26C-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ26C-E3/61 FAQ
1.How can I place an order for SMAJ26C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ26C-E3/61 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 SMAJ26C-E3/61 reliable?
The price and inventory of SMAJ26C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ26C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ26C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ26C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ26C-E3/61?
SMAJ26C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ26C-E3/61 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 SMAJ26C-E3/61?
For technical support, including SMAJ26C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ26C-E3/61 requirements.
6.How does Aetrix verify that SMAJ26C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ26C-E3/61 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 SMAJ26C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ26C-E3/61?
All SMAJ26C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ26C-E3/61, 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 SMAJ26C-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ26C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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