My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ26C-E3/5A
- Part No.:
- SMAJ26C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ26C-E3/5A.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,350
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ26C-E3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode 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 (10/1000 µs waveform), making it suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMAJ26C-E3/5A datasheet, SMAJ26C-E3/5A pinout, SMAJ26C-E3/5A application, or SMAJ26C-E3/5A equivalent, this page delivers verified electrical parameters, bi-directional TVS behavior, DO-214AC mechanical data, thermal resistance values, and direct alternatives with documented differences in clamping performance and leakage.
Technical Context
The SMAJ26C-E3/5A operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown characteristics in both polarities with no polarity marking. Its 28.9–35.3 V breakdown voltage (VBR) at 1 mA test current ensures reliable triggering above 26 V stand-off while maintaining low reverse leakage (<1 µA at VWM).
Thermally, it delivers RθJA = 120 °C/W and RθJL = 30 °C/W under standard mounting conditions (0.2 × 0.2" copper pads), supporting operation from –55 °C to +150 °C junction temperature. The device meets MSL level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V nominal systems. |
| VC @ IPPM | 46.6 V - Clamped voltage during 8.6 A 10/1000 µs surge; limits downstream component stress to sub-47 V. |
| IPPM | 8.6 A - Peak surge current capability under standardized waveform; determines minimum line impedance required for full protection. |
| PPPM | 400 W - Peak pulse power rating (10/1000 µs); enables robust handling of lightning-induced or inductive-switching transients. |
| VBR min/max | 28.9 V / 35.3 V - Breakdown voltage range at 1 mA; guarantees turn-on consistency across production lots and temperature. |
| ID @ VWM | <1 µA - Reverse leakage at 26 V; ensures negligible standby power loss and signal integrity in high-impedance circuits. |
| TJ range | –55 °C to +150 °C - Full operational junction temperature range; validated for under-hood automotive and industrial environments. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - terminals are functionally identical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as bidirectional avalanche junctions; no cathode band or polarity identification required. |
| Case (body) | Thermal and mechanical interface | DO-214AC molded body provides UL 94 V-0 flammability rating and mechanical stability during reflow soldering at 260 °C. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional suppression | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (≤78 V) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) when paired with appropriate series impedance. |
| Low clamping ratio (VC/VWM = 1.79) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices. |
| MSL Level 1 & 260 °C reflow compatible | Allows use in standard SMT assembly lines without moisture sensitivity handling or special baking protocols. |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and eliminates whisker risk (JESD 201 Class 1A). |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure or temperature sensors exposed to load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across sensor output and ground to shunt surges before reaching ADC input or signal conditioner. Use Value: Limits transient voltage to ≤46.6 V, preventing latch-up or damage to 5 V or 3.3 V rail-referenced front-end circuitry. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Paired SMAJ26C-E3/5A devices (one per line) referenced to common ground, absorbing common-mode surges up to ±25 kV contact ESD. Use Value: Maintains CAN signal integrity by clamping transients within ISO 11898-2 common-mode tolerance (±40 V), avoiding bus shutdown. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side overvoltage protection on 24 V DC output rails of wall-mounted AC/DC adapters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor to clamp fast-rising transients before reaching connected USB-PD or PoE controllers. Use Value: Responds in <1 ps to limit voltage overshoot to 46.6 V, preserving 30 V-rated output capacitors and secondary-side MOSFETs. |
Use Scenario: Primary protection for Ethernet PHY interfaces on telecom line cards exposed to induced surges from nearby power cables. IC Role / Device Role / Timing Role: Installed on RJ45 magnetics center taps or transformer secondary windings to absorb longitudinal mode surges. Use Value: Withstands 400 W pulses without degradation, enabling compliance with GR-1089-CORE Level 3 (10/1000 µs, 10 A) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA-E3/5A | Identical electrical specs and packaging; "CA" suffix explicitly denotes bi-directional version per Vishay nomenclature (C = bi-directional, A = automotive-grade variant). | Same functional role; differs only in qualification grade (AEC Q101 for CA vs. commercial for C). | Select SMAJ26CA-E3/5A for automotive OEM designs requiring AEC Q101 validation; SMAJ26C-E3/5A suffices for industrial/commercial use. |
| SMCJ26C-E3/57T | Same VWM (26 V) but higher PPPM (1500 W) and larger DO-214AB (SMC) package; VC = 42.1 V at 35.7 A. | Used where higher surge energy (e.g., 10/1000 µs, 30 A) must be absorbed without PCB layout change to series impedance. | Choose SMCJ26C-E3/57T only if system-level testing shows 400 W insufficient; requires larger footprint and different thermal pad design. |
Compared with SMAJ26C-E3/5A, SMAJ26CA-E3/5A adds AEC Q101 qualification for automotive reliability without altering clamping behavior, while SMCJ26C-E3/57T trades compact DO-214AC size for 3.75× higher surge capacity in a larger package - neither is pin-compatible due to differing form factors and qualification scope.
Availability
SMAJ26C-E3/5A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, telecom line card protection, and consumer power adapter designs requiring stable component supply and long-term obsolescence management.
Supply support for SMAJ26C-E3/5A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series was developed for surface-mount transient suppression in space-constrained, high-reliability applications - delivering consistent clamping performance across automotive, industrial, and communications infrastructure platforms.
FAQ
What is the clamping voltage of the SMAJ26C-E3/5A under a 10/1000 µs surge?
The SMAJ26C-E3/5A 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 measured per Figure 1 and Table 1 in Vishay document 88390, and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMAJ26C-E3/5A unidirectional or bidirectional?
The SMAJ26C-E3/5A is a bi-directional TVS diode, as confirmed by the "C" suffix in its part number and explicit designation in Vishay's documentation. It exhibits symmetrical breakdown and clamping behavior in both polarities, with no cathode band marking and identical electrical characteristics regardless of terminal orientation.
Does the SMAJ26C-E3/5A meet automotive qualification standards?
The SMAJ26C-E3/5A is a commercial-grade device and does not carry AEC Q101 qualification. For automotive applications requiring formal qualification, Vishay offers the functionally equivalent SMAJ26CA-E3/5A, which shares identical electrical specs but adds AEC Q101 validation and high-reliability process controls.
What is the maximum reverse leakage current for the SMAJ26C-E3/5A at its stand-off voltage?
At its 26 V stand-off voltage (VWM), the SMAJ26C-E3/5A exhibits a maximum reverse leakage current (ID) of 1 µA, measured at TA = 25 °C. This low leakage preserves signal integrity in high-impedance sensor or communication lines and minimizes quiescent power loss.
Can the SMAJ26C-E3/5A be used in place of the SMAJ26A-E3/5A?
No - SMAJ26C-E3/5A and SMAJ26A-E3/5A are not interchangeable. The "C" denotes bi-directional operation, while "A" indicates a unidirectional variant with cathode marking and forward voltage drop (~3.5 V at 25 A). Substituting one for the other risks incorrect clamping behavior or open-circuit failure in bi-directional signal paths.
SMAJ26C-E3/5A 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-E3/5A FAQ
1.How can I place an order for SMAJ26C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ26C-E3/5A 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-E3/5A reliable?
The price and inventory of SMAJ26C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ26C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ26C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ26C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ26C-E3/5A?
SMAJ26C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ26C-E3/5A 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-E3/5A?
For technical support, including SMAJ26C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ26C-E3/5A requirements.
6.How does Aetrix verify that SMAJ26C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ26C-E3/5A 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-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ26C-E3/5A?
All SMAJ26C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ26C-E3/5A, 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-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ26C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ26C-E3/5A 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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 …
