My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA11AHE3/54
- Part No.:
- SA11AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA11AHE3/54.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,651
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA11AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 11 V standoff voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 18.2 V clamping voltage at 27.5 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA11AHE3/54 datasheet, SA11AHE3/54 pinout, SA11AHE3/54 application, or SA11AHE3/54 equivalent, this part is selected for robust overvoltage protection on DC power rails and signal lines where fast response (<1 ns), low clamping ratio, and high surge current tolerance are required in harsh environments.
Technical Context
The SA11AHE3/54 operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transient events. Its 11 V stand-off voltage allows reliable blocking during normal operation while triggering at ≥12.2 V to clamp damaging surges.
It delivers 500 W peak pulse power per 10/1000 μs waveform with 27.5 A maximum peak pulse current and 18.2 V clamping voltage - achieving a clamping ratio of 1.65 relative to VWM. Thermal performance supports continuous operation up to +175 °C junction temperature and meets JESD 22-B106 soldering requirements (275 °C, 10 s).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum reverse working voltage before clamping begins; defines safe operating DC bias range. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on under surge conditions. |
| VC @ IPPM | 18.2 V at 27.5 A - Clamping voltage limits downstream component stress during worst-case 10/1000 μs transients. |
| PPPM | 500 W - Peak pulse power rating determines survivability against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| IFSM | 70 A - Non-repetitive forward surge current rating supports inrush or fault-current handling in power supply inputs. |
| TJ max. | +175 °C - High junction temperature rating enables deployment in under-hood automotive or industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, epoxy-molded case with matte tin-plated leads. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line's low-side reference (e.g., ground or negative rail); completes clamping loop during reverse-biased surge event. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); conducts avalanche current when transient exceeds VBR, shunting energy to anode side. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR over lifetime and resistance to humidity-induced degradation in automotive under-hood environments. |
| 500 W peak pulse power (10/1000 μs) | Supports compliance with IEC 61000-4-5 surge immunity testing at system level without derating. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, body controllers, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection margin. |
| Solderable per J-STD-002/JESD 22-B102 | Enables compatibility with standard reflow and wave solder processes without lead damage or delamination. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges above 13.5 V. Use Value: Limits peak voltage to ≤18.2 V during 27.5 A transients, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD (IEC 61000-4-2 ±8 kV contact) and inductive switching spikes. Use Value: Sub-ns response and 18.2 V clamping prevent latch-up or parametric shift in precision op-amps and ADC front-ends. |
| Consumer Power Adapter Input | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters supplying USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V/+9 V/+15 V output rails to suppress cross-regulation surges and hot-swap transients. Use Value: 11 V VWM avoids conduction during normal regulation; 500 W rating handles repetitive 10/1000 μs surges from shared bus coupling. | Use Scenario: DC power feed protection in remote radio heads and base station backhaul equipment powered via -48 V telecom supplies. IC Role / Device Role / Timing Role: Unidirectional TVS on -48 V input to clamp positive-going surges from lightning-induced coupling on long feeder runs. Use Value: AEC-Q101 qualification ensures long-term stability under thermal cycling and vibration, critical for outdoor telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/5T | Same VWM (11 V), same DO-214AC package, but lower PPPM (400 W) and higher VC (18.5 V at 24.7 A). | Less robust for IEC 61000-4-5 Level 4; suitable only where surge energy is limited or layout allows parallel devices. | Select SMAJ11A-E3/5T only if board space requires surface-mount and system-level surge testing confirms 400 W sufficiency. |
| P6SMB11AHE3/A | Same VWM (11 V), same AEC-Q101 qualification, but SMB package (DO-214AA) with 600 W PPPM and 19.9 V VC at 25.1 A. | Higher power handling but larger footprint; slightly higher clamping voltage reduces protection margin for sensitive ICs. | Choose P6SMB11AHE3/A when higher surge margin is needed and PCB real estate permits SMB outline. |
Compared with SA11AHE3/54, SMAJ11A-E3/5T offers SMT compatibility at reduced surge capability, while P6SMB11AHE3/A provides greater power dissipation in a larger package - both require verification of clamping voltage margins and layout thermal relief for sustained operation.
Availability
SA11AHE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and proven surge resilience.
Supply support for SA11AHE3/54 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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade validation.
The SAxxA series is engineered for high-energy transient suppression in demanding DC power and signal line applications, targeting automotive, industrial, and telecom sectors where AEC-Q101 and IEC-compliant surge performance are mandatory.
FAQ
What is the clamping voltage of the SA11AHE3/54 and how is it measured?
The SA11AHE3/54 has a maximum clamping voltage (VC) of 18.2 V at 27.5 A peak pulse current, tested using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the upper limit of voltage seen by downstream components during worst-case surge events and is confirmed in the Vishay datasheet revision 27-Sep-2021, page 2.
Is the SA11AHE3/54 suitable for automotive applications?
Yes, the SA11AHE3/54 is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature operating life, temperature cycling, and ESD robustness required for automotive electronics. Its DO-15 package, 175 °C max junction temperature, and glass-passivated junction make it appropriate for engine control, body electronics, and ADAS subsystems where SA11AHE3/54 is deployed as primary surge protection.
What does the "HE3" suffix indicate in SA11AHE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes the automotive-grade version from commercial "E3" variants (e.g., SA11A-E3/54), confirming enhanced process controls, extended reliability testing, and traceable lot documentation required for automotive BOMs containing SA11AHE3/54.
How does the SA11AHE3/54 compare to bidirectional TVS diodes like SA11CA?
The SA11AHE3/54 is unidirectional and intended for DC circuits with defined polarity, offering tighter VBR tolerance and lower leakage than bidirectional types. In contrast, SA11CA protects AC or floating lines but exhibits symmetrical breakdown in both directions and higher ID at VWM. For 12 V automotive rails, SA11AHE3/54 provides superior clamping efficiency and lower standby loss - a key distinction when selecting SA11AHE3/54 over CA-suffix variants.
Can the SA11AHE3/54 be used in parallel for higher surge current handling?
No - paralleling SA11AHE3/54 devices is not recommended due to mismatch in VBR and dynamic impedance, which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device such as P6SMB11AHE3/A (600 W) or verify layout-level derating with Vishay's application notes. The SA11AHE3/54 must be applied as a single-point protector per line.
SA11AHE3/54 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA11AHE3/54 FAQ
1.How can I place an order for SA11AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA11AHE3/54 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 SA11AHE3/54 reliable?
The price and inventory of SA11AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA11AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA11AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA11AHE3/54?
SA11AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA11AHE3/54 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 SA11AHE3/54?
For technical support, including SA11AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11AHE3/54 requirements.
6.How does Aetrix verify that SA11AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA11AHE3/54 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 SA11AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA11AHE3/54?
All SA11AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA11AHE3/54, 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 SA11AHE3/54 part is unused and in its original packaging.
Return procedure for SA11AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA11AHE3/54 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 …
