My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J26AHM3_A/I
- Part No.:
- SMA5J26AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26AHM3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,182
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J26AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features 26 V stand-off voltage (VWM), 42.1 V maximum clamping voltage (VC) at 11.9 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive electronics.
For engineers reviewing the SMA5J26AHM3_A/I datasheet, SMA5J26AHM3_A/I pinout, SMA5J26AHM3_A/I application, or SMA5J26AHM3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 80 °C/W), unidirectional polarity with cathode band marking, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling consistent clamping across repetitive transients up to 150 °C junction temperature.
Designed for surface-mount automated placement, it uses a low-profile SMA (DO-214AC) package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The device meets MSL Level 1 (260 °C peak reflow) and supports bidirectional variants via CA suffix - though SMA5J26AHM3_A/I is strictly unidirectional.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 28.9 V / 31.9 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 42.1 V - Clamping voltage at 11.9 A peak pulse current (10/1000 μs); limits downstream voltage stress during surge. |
| PPPM | 500 W - Peak pulse power handling capability; determines survivability against standardized lightning/surge waveforms. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs PCB pad layout requirements for thermal management. |
| TJ max | +150 °C - Maximum junction temperature; sets upper limit for ambient + self-heating in continuous operation. |
| Polarity | Unidirectional - Cathode marked with band; blocks forward conduction, clamps only reverse transients. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration; carries full surge current during clamping. |
| Cathode | Reverse-biased terminal / Clamping node | Connected to protected line (e.g., 24 V rail or CAN-H); avalanche breakdown initiates here to clamp voltage to VC. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche breakdown voltage and long-term reliability under repeated surge stress. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade temperature cycling, humidity, and mechanical shock; suitable for engine control, body electronics, and ADAS modules. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and automotive OEMs without compromising surge robustness. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-induced damage or delamination. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits voltage to ≤42.1 V during 500 W surges, preventing damage to downstream regulators and microcontrollers rated for 36 V absolute max. | Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) transient suppressor mounted directly at sensor connector interface. Use Value: Clamps ESD and switching noise to <42.1 V without distorting 4–20 mA or 0–10 V analog signals due to fast response and minimal leakage (<1 μA at 26 V). |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Surge Suppression |
Use Scenario: Safeguarding PoE-powered network switches and base stations against induced lightning surges on 48 V DC inputs. IC Role / Device Role / Timing Role: Primary-level TVS on main DC input, coordinated with upstream fuses and secondary-stage MOVs. Use Value: Absorbs 10/1000 μs transients up to 500 W while maintaining VWM = 26 V margin above nominal 24–48 V telecom rails. | Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Reverse-polarity TVS across motor terminals or H-bridge outputs to clamp flyback spikes. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) and clamps spikes to 42.1 V, protecting MOSFETs rated for 60 V drain-source breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26AHE3_A/I | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free); no AEC-Q101 qualification. | Acceptable for industrial/commercial designs where automotive qualification is not required. | Select when halogen-free content is not mandated and cost optimization is prioritized over automotive compliance. |
| SMCJ26A-M3/57 | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs. | Used where higher surge energy absorption is needed and board space allows larger footprint. | Choose for applications requiring >500 W surge handling, such as heavy-duty industrial controls or outdoor telecom equipment. |
Compared with SMA5J26AHM3_A/I, SMA5J26AHE3_A/I offers identical clamping and thermal performance but lacks halogen-free certification and AEC-Q101 validation, while SMCJ26A-M3/57 delivers triple the peak pulse power in a physically larger package - making it suitable for higher-energy threat environments at the cost of PCB area.
Availability
SMA5J26AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMA5J26AHM3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade validation.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial applications where fast response and repeatable clamping are critical.
FAQ
What is the clamping voltage of the SMA5J26AHM3_A/I under a 10/1000 µs surge?
The SMA5J26AHM3_A/I has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current of 11.9 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on minimum recommended copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J26AHM3_A/I maintains this clamping performance across its operational temperature range, supporting robust design margins in automotive and industrial environments.
Is the SMA5J26AHM3_A/I suitable for automotive applications?
Yes, the SMA5J26AHM3_A/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS subsystems. Its guaranteed operation from -55 °C to +150 °C junction temperature, MSL Level 1 reflow compatibility, and validated surge robustness align with automotive reliability requirements. The SMA5J26AHM3_A/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix for transient suppression.
What does the "HM3" suffix indicate in SMA5J26AHM3_A/I?
The "HM3" suffix in SMA5J26AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms compliance with automotive environmental and reliability standards. The "_A/I" portion specifies packaging: "A" is the revision code, and "I" indicates 13-inch tape-and-reel delivery (7500 units per reel). This full ordering code ensures traceability and correct material classification for OEM procurement.
How does the SMA5J26AHM3_A/I compare to bidirectional TVS diodes like SMA5J26CA?
The SMA5J26AHM3_A/I is unidirectional and clamps only reverse-voltage transients, with polarity indicated by a cathode band; SMA5J26CA is bidirectional and protects against surges of either polarity. Electrically, SMA5J26CA has symmetric breakdown (±28.9 V to ±31.9 V) and double the leakage current limit at VWM, but identical PPPM and VC. The SMA5J26AHM3_A/I is preferred for DC power rails where polarity is fixed, offering tighter leakage control and simpler layout integration than bidirectional alternatives.
What is the thermal resistance of the SMA5J26AHM3_A/I, and how does it affect PCB layout?
The SMA5J26AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and guides minimum copper area requirements: reducing RθJA requires increasing pad size or adding thermal vias. For sustained surge duty or high ambient temperatures, designers must verify junction temperature stays below 150 °C using this RθJA and actual power dissipation - a key consideration in the SMA5J26AHM3_A/I thermal design.
SMA5J26AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- 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):
- 11.9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J26AHM3_A/I FAQ
1.How can I place an order for SMA5J26AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26AHM3_A/I 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 SMA5J26AHM3_A/I reliable?
The price and inventory of SMA5J26AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J26AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26AHM3_A/I?
SMA5J26AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26AHM3_A/I 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 SMA5J26AHM3_A/I?
For technical support, including SMA5J26AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26AHM3_A/I requirements.
6.How does Aetrix verify that SMA5J26AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J26AHM3_A/I 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 SMA5J26AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J26AHM3_A/I?
All SMA5J26AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26AHM3_A/I, 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 SMA5J26AHM3_A/I part is unused and in its original packaging.
Return procedure for SMA5J26AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J26AHM3_A/I 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 …
