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Vishay General Semiconductor - Diodes Division SAC26-E3/54
- Part No.:
- SAC26-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SAC26-E3/54.pdf
- Description:
- TVS DIODE 26VWM 42.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,987
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Product details
Overview
SAC26-E3/54 from Vishay General Semiconductor is a unidirectional low-capacitance TRANSZORB® transient voltage suppressor (TVS) diode in DO-15 package, designed for clamping fast voltage transients on signal or power lines. It features a 26 V working peak inverse voltage (VWM), 28.9 V minimum breakdown voltage at 1 mA, 42.3 V maximum clamping voltage at 11.1 A, 500 W peak pulse power (10/1000 µs), and operates from –55 °C to +175 °C junction temperature - used for protecting MOSFETs and sensor signal lines in industrial control systems.
For engineers reviewing the SAC26-E3/54 datasheet, SAC26-E3/54 pinout, SAC26-E3/54 application, or SAC26-E3/54 equivalent, key selection criteria include clamping voltage at rated IPP, unidirectional polarity, DO-15 mechanical compatibility, thermal derating above 25 °C, and compliance with JESD 22-B106 soldering conditions.
Technical Context
The SAC26-E3/54 functions as a silicon avalanche diode that enters controlled breakdown when reverse voltage exceeds its VBR threshold, diverting surge current away from protected circuitry. Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while its glass-passivated junction enables stable performance under repetitive stress.
Designed for single-pulse transient suppression per IEC 61000-4-5 (10/1000 µs waveform), it delivers 500 W peak pulse power with 0.01 % duty cycle. The device is not intended for continuous overvoltage regulation but for short-duration energy absorption - requiring coordination with upstream fusing or current limiting in high-energy fault scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before significant leakage; defines safe blocking range for DC-biased signal lines |
| VBR (min) | 28.9 V at IT = 1.0 mA - guaranteed avalanche initiation threshold; ensures predictable turn-on during overvoltage events |
| VC (max) | 42.3 V at IPP = 11.1 A - clamped voltage seen by protected IC; determines residual stress on downstream components |
| PPPM | 500 W (10/1000 µs) - peak transient energy handling capability; sets upper limit for surge robustness in industrial environments |
| PD | 3.0 W - steady-state power dissipation on infinite heatsink at TL = 75 °C; informs thermal design for sustained leakage or bias conditions |
| TJ max. | +175 °C - maximum junction temperature; supports operation in high-ambient industrial or under-hood automotive locations |
| Polarity | Unidirectional - blocks only reverse surges; requires external polarity alignment in circuit layout |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; cathode indicated by color band; lead length ≥ 1.0 inch (25.4 mm); compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; forms cathode-to-rail configuration in standard TVS placement |
| Cathode | Avalanche conduction terminal | Marked by color band; connected toward higher-potential rail or VCC; carries surge current during reverse overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable avalanche characteristics and long-term reliability under repeated transient stress without parameter drift |
| 500 W peak pulse power (10/1000 µs) | Supports protection against Level 4 IEC 61000-4-5 surges (4 kV open-circuit, 2 Ω source impedance) on 24 V industrial buses |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (< 1 ns rise time), improving clamping precision for sensitive analog inputs |
| DO-15 mechanical compatibility | Direct drop-in replacement for legacy DO-15 TVS diodes; supports automated through-hole assembly with standard 0.034" lead diameter |
| JESD 22-B106 solderability | Validated for 275 °C / 10 s solder dip; ensures robust lead termination integrity in wave-solder and reflow processes |
Applications
| Industrial Sensor Interface Protection | 24 V PLC I/O Module Protection |
|---|---|
Use Scenario: Protecting analog input channels of programmable logic controllers from inductive kickback generated by solenoid valve switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before they reach ADC front-end or op-amp buffer. Use Value: Limits clamped voltage to ≤42.3 V, preventing latch-up or permanent damage to 3.3 V or 5 V signal-conditioning ICs downstream. | Use Scenario: Safeguarding digital output drivers in modular PLC backplanes exposed to relay contact bounce and field wiring faults. IC Role / Device Role / Timing Role: Transient suppressor mounted across 24 V supply rail and chassis ground to absorb energy from inductive load disconnection. Use Value: Withstands 500 W pulses without degradation, maintaining system uptime in factory automation environments with frequent load cycling. |
| MOSFET Gate Driver Protection | Automotive Body Control Module Input |
Use Scenario: Shielding gate drive traces of N-channel power MOSFETs from ESD and switching noise in motor control H-bridges. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between gate and source to suppress sub-100 ns spikes without distorting PWM edges. Use Value: 50 pF junction capacitance minimizes RC delay, preserving <100 ns switching timing integrity in 20 kHz+ motor drives. | Use Scenario: Protecting LIN bus input pins in body control modules from battery dump and load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional suppressor installed between LIN data line and ground to meet ISO 7637-2 Pulse 1 and Pulse 2a immunity requirements. Use Value: 26 V VWM aligns with nominal 12 V system plus tolerance margin, enabling reliable operation without false triggering during normal battery fluctuations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A-E3/52 | DO-214AA (SMB) package; 26 V VWM; 42.1 V VC at 11.4 A; 600 W PPPM | Surface-mount alternative with higher power rating and smaller footprint; requires PCB redesign | Select for space-constrained designs where SMT assembly is preferred and thermal management allows SMB package power handling |
| P6KE27A | DO-15 package; 27 V VWM; 43.0 V VC at 11.6 A; 600 W PPPM; higher leakage (50 μA max) | Near-identical form factor; slightly higher VWM and VC; less stringent leakage spec | Choose when tighter VWM tolerance is not required and higher steady-state leakage is acceptable in low-power standby circuits |
Compared with SAC26-E3/54, SMBJ26A-E3/52 offers higher surge power and SMT compatibility but demands layout changes, while P6KE27A provides DO-15 drop-in feasibility with relaxed VWM and leakage specs - making SAC26-E3/54 optimal for cost-sensitive through-hole industrial designs requiring precise 26 V standoff and low leakage.
Availability
SAC26-E3/54 is available at Aetrix Electronics and suitable for industrial sensor interfaces, 24 V PLC I/O modules, and MOSFET gate driver protection requiring stable component supply and long-term manufacturing continuity.
Supply support for SAC26-E3/54 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 protection devices with emphasis on reliability, ruggedness, and application-specific optimization.
The SAC series is engineered for robust transient suppression in harsh industrial and automotive environments, targeting designers needing proven DO-15 TVS solutions with validated surge endurance and thermal stability.
FAQ
What is the maximum clamping voltage of the SAC26-E3/54 under specified test conditions?
The SAC26-E3/54 has a maximum clamping voltage (VC) of 42.3 V when subjected to a peak pulse current (IPP) of 11.1 A using the 10/1000 µs waveform. This value represents the highest voltage the device will allow across its terminals during a standardized surge event, directly defining the protection level provided to downstream circuitry. The SAC26-E3/54 maintains this clamping performance within its specified junction temperature range and derating curve.
Is the SAC26-E3/54 suitable for bidirectional transient suppression?
No, the SAC26-E3/54 is a unidirectional TVS diode and is not suitable for bidirectional suppression. It conducts only during reverse-biased overvoltage events and blocks forward current like a standard diode. For AC line or differential signal protection requiring symmetrical clamping, two SAC26-E3/54 devices must be used in series opposition, or a dedicated bidirectional part such as SAC26C-E3/54 should be selected instead.
What is the junction capacitance of the SAC26-E3/54, and how does it affect high-speed signal lines?
The SAC26-E3/54 exhibits a maximum junction capacitance of 50 pF at 0 V, measured under zero-bias conditions. This low capacitance minimizes signal distortion and timing skew on high-speed or high-frequency signal paths, such as sensor outputs or communication lines up to several MHz. When placed in parallel with such lines, the SAC26-E3/54 introduces negligible loading - critical for preserving signal integrity in analog front-ends and digital interfaces.
Does the SAC26-E3/54 meet RoHS and lead-free soldering requirements?
Yes, the SAC26-E3/54 is RoHS-compliant and qualified for lead-free soldering processes. The "E3" suffix indicates compliance with JEDEC JESD201 Class 1A whisker testing and adherence to RoHS Directive 2011/65/EU. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102 standards, and it withstands solder dip at 275 °C for up to 10 seconds per JESD 22-B106.
How does thermal derating impact the power dissipation capability of the SAC26-E3/54?
The SAC26-E3/54 has a rated power dissipation (PD) of 3.0 W at TL = 75 °C on an infinite heatsink, but this value decreases linearly above 25 °C ambient per the published derating curve. At 75 °C ambient, PD drops to approximately 1.5 W; at 125 °C, it falls below 0.5 W. Engineers must apply this derating when estimating safe continuous leakage or bias power in elevated-temperature enclosures - the SAC26-E3/54 remains functional up to TJ = 175 °C, but steady-state power handling is thermally constrained.
SAC26-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- 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:
- 42.3V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SAC26-E3/54 FAQ
1.How can I place an order for SAC26-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAC26-E3/54 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 SAC26-E3/54 reliable?
The price and inventory of SAC26-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAC26-E3/54 is usually 5 days.
3.What payment methods are accepted for SAC26-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAC26-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAC26-E3/54?
SAC26-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAC26-E3/54 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 SAC26-E3/54?
For technical support, including SAC26-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAC26-E3/54 requirements.
6.How does Aetrix verify that SAC26-E3/54 is sourced from the original manufacturer or authorized distributors?
All SAC26-E3/54 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 SAC26-E3/54 meets industry standards.
7.What is the process for return or replacement of SAC26-E3/54?
All SAC26-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SAC26-E3/54, 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 SAC26-E3/54 part is unused and in its original packaging.
Return procedure for SAC26-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SAC26-E3/54 Tags
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