My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J26-E3/5A
- Part No.:
- SMA5J26-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26-E3/5A.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,775
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J26-E3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown range (VBR), 42.1 V clamping voltage at 11.9 A peak pulse current (IPPM), and 500 W peak pulse power rating (10/1000 µs waveform). It is widely used to protect automotive ECUs and industrial sensor interfaces against ESD and load dump transients.
For engineers reviewing the SMA5J26-E3/5A datasheet, SMA5J26-E3/5A pinout, SMA5J26-E3/5A application, or SMA5J26-E3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin-plated leads, AEC-Q101 qualification, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 µA leakage at 26 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable performance and reliability across thermal cycling.
The device complies with ANSI/IEEE C62.35 for transient suppression, delivers sub-nanosecond response time, and maintains low incremental surge resistance to minimize clamping overshoot during 10/1000 µs surges. It is rated for MSL level 1 (260 °C reflow peak) and qualified per AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 42.1 V - Clamped voltage at 11.9 A peak pulse current; determines protected circuit's maximum transient stress |
| PPPM | 500 W - Peak pulse power handling capability for 10/1000 µs waveform; defines surge energy absorption |
| IPPM | 11.9 A - Maximum non-repetitive surge current the device can safely divert without failure |
| TJ max | +150 °C - Maximum allowable junction temperature; sets thermal derating limits for high ambient designs |
| Leakage ID | 1.0 µA - Reverse leakage at VWM; ensures minimal standby power loss and signal integrity |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by a band on one end; anode is unmarked. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR |
| Anode (unmarked end) | Reference / return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability and resistance to humidity-induced degradation in harsh environments |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, mechanical shock, and lifetime reliability |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision and downstream IC safety |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance; suitable for high-reliability commercial and industrial PCBs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 load dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed between power rail and chassis ground to clamp overvoltage events. Use Value: Limits transient voltage to ≤42.1 V at 11.9 A, preventing damage to downstream regulators and microcontrollers rated for 36 V absolute maximum. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in industrial pressure and temperature transmitters exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though SMA5J26-E3/5A is unidirectional, used with series resistor or in rail-to-rail configuration) guarding signal integrity. Use Value: Withstands repetitive 500 W surges while maintaining <1 µA leakage at 26 V, preserving measurement accuracy and minimizing offset drift. |
| Consumer Power Adapter Input Protection | Telecom DC Power Distribution Protection |
Use Scenario: Front-end protection for universal input AC/DC adapters (e.g., 12–24 V output) subjected to lightning-induced surges on mains-connected secondary circuits. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the DC output side, coordinated with upstream fuses and common-mode chokes. Use Value: Fast response (<1 ns) and 500 W rating enable reliable suppression of 10/1000 µs transients without thermal runaway, extending adapter lifespan. | Use Scenario: Protecting -48 V DC distribution boards in telecom central offices and remote radio units against accidental short-circuit recovery spikes and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS mounted between -48 V rail and return, leveraging cathode-to-rail orientation for negative-rail clamping. Use Value: 150 °C TJ max and 80 °C/W RθJA allow operation in high-density, convection-cooled enclosures without forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26AHE3/5A | AEC-Q101 qualified version with identical electrical specs; HE3 suffix denotes automotive-grade whisker testing (JESD201 Class 2) | Required for automotive safety-critical modules where AEC-Q101 compliance is mandatory (e.g., ADAS, braking systems) | Select SMA5J26AHE3/5A when full automotive qualification documentation and traceability are required beyond commercial-grade E3 |
| SMCJ26A-E3/57T | Same VWM/VC but in larger DO-214AB (SMC) package; higher IPPM (21.6 A) and PPPM (1500 W); RθJA = 35 °C/W | Better suited for high-energy transients (e.g., ISO 16750-2 pulse 5a) where 500 W is insufficient | Choose SMCJ26A-E3/57T when surge energy exceeds SMA5J26-E3/5A capability or board layout allows larger footprint for improved thermal dissipation |
Compared with SMA5J26AHE3/5A, the SMA5J26-E3/5A offers identical clamping performance at lower cost and qualification scope; compared with SMCJ26A-E3/57T, it trades surge capacity and thermal margin for compact size and lower parasitic inductance-critical for high-frequency transient suppression.
Availability
SMA5J26-E3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom DC power distribution requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMA5J26-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, power efficiency, and automotive-grade validation.
The SMA5Jxx series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount transient suppression in space-constrained automotive, industrial, and communications systems.
FAQ
What is the polarity configuration of the SMA5J26-E3/5A?
The SMA5J26-E3/5A is a unidirectional transient voltage suppressor diode. Its cathode is marked with a band on the package body; the banded end must be connected toward the protected line, and the anode to ground or the lower-potential reference. This configuration enables clamping only during positive transients relative to ground, making it ideal for DC rail protection where reverse voltage is not expected.
Does the SMA5J26-E3/5A meet automotive qualification standards?
The SMA5J26-E3/5A is RoHS-compliant and MSL Level 1 qualified, but it is not AEC-Q101 certified. For automotive applications requiring formal qualification, the pin-compatible SMA5J26AHE3/5A variant should be selected instead. The "E3" suffix indicates commercial-grade construction, while "HE3" denotes the AEC-Q101-qualified version with enhanced whisker resistance and extended reliability testing.
What is the maximum clamping voltage of the SMA5J26-E3/5A and at what current is it specified?
The SMA5J26-E3/5A has a maximum clamping voltage (VC) of 42.1 V, measured at its peak pulse current (IPPM) of 11.9 A under the standardized 10/1000 µs double-exponential waveform. This value represents the highest voltage that will appear across the protected circuit during a worst-case surge event, directly determining whether downstream components remain within their absolute maximum ratings.
Can the SMA5J26-E3/5A be used in bi-directional protection applications?
No-the SMA5J26-E3/5A is strictly unidirectional. Bi-directional operation requires the "CA" suffix (e.g., SMA5J26CA). Using the unidirectional SMA5J26-E3/5A in a bi-directional configuration risks catastrophic failure during negative transients, as it lacks reverse breakdown capability. For symmetric surge protection, select the CA variant or pair two unidirectional devices in series opposition.
What is the thermal resistance and how does it affect layout for the SMA5J26-E3/5A?
The SMA5J26-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. Reducing pad size or omitting thermal vias increases RθJA, risking thermal runaway during high-duty-cycle transients.
SMA5J26-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J26-E3/5A FAQ
1.How can I place an order for SMA5J26-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26-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 SMA5J26-E3/5A reliable?
The price and inventory of SMA5J26-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 SMA5J26-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J26-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26-E3/5A?
SMA5J26-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26-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 SMA5J26-E3/5A?
For technical support, including SMA5J26-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26-E3/5A requirements.
6.How does Aetrix verify that SMA5J26-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J26-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 SMA5J26-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J26-E3/5A?
All SMA5J26-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26-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 SMA5J26-E3/5A part is unused and in its original packaging.
Return procedure for SMA5J26-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J26-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 …
