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Vishay General Semiconductor - Diodes Division SA7.5HE3/54
- Part No.:
- SA7.5HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5HE3/54.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,678
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Product details
Overview
SA7.5HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 7.5 V stand-off voltage, 8.33–9.21 V breakdown at 1.0 mA, 38.8 A peak pulse current (10/1000 μs), 12.9 V clamping voltage at IPPM, and 500 W peak pulse power. It is AEC-Q101 qualified and used to protect automotive sensor signal lines from inductive switching transients.
For engineers reviewing the SA7.5HE3/54 datasheet, SA7.5HE3/54 pinout, SA7.5HE3/54 application, or SA7.5HE3/54 equivalent, this page delivers verified electrical parameters, JEDEC-compliant packaging details, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, and real-world protection use cases in automotive and industrial electronics.
Technical Context
The SA7.5HE3/54 operates as a uni-directional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 12.9 V clamping voltage at 38.8 A ensures robust overvoltage suppression during 10/1000 μs transients while maintaining low leakage (<50 μA at 7.5 V).
Designed for high-reliability environments, it supports operating junction temperatures from –55 °C to +175 °C and meets JESD 201 Class 2 whisker resistance requirements. The device is not intended for bidirectional use - polarity is marked by a cathode band, and reverse conduction is blocked beyond VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - guaranteed avalanche onset range under standardized test conditions |
| IPPM | 38.8 A - peak surge current it safely clamps with 10/1000 μs waveform, defining transient handling capacity |
| VC | 12.9 V - maximum voltage across terminals during IPPM, directly limiting stress on downstream ICs |
| PPPM | 500 W - peak pulse power dissipation capability, enabling protection against high-energy transients |
| TJ max | +175 °C - maximum junction temperature, supporting under-hood automotive deployment without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-204AC (DO-15), axial lead, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts only during forward-biased surges (rare in TVS use) |
| Cathode | Reverse breakdown terminal | Connected to protected line; avalanches into conduction when reverse voltage exceeds VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under thermal cycling |
| 500 W peak pulse power (10/1000 μs) | Handles high-energy transients common in automotive load-dump and inductive switch-off events |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and body electronics |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-humidity, high-temperature automotive environments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine compartments exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between sensor output and ground, conducting only during negative-going transients exceeding VWM. Use Value: Limits voltage seen by downstream ADC or op-amp input to ≤12.9 V during 38.8 A surges, preventing latch-up or permanent damage. | Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff-connected TVS on 24 V DC input lines, absorbing repetitive 10/1000 μs transients from relay coil de-energization. Use Value: Maintains signal integrity by clamping transients within 1.0 ns response time while drawing <50 μA leakage at nominal 24 V operation. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding USB-C or barrel-jack input stages of wall adapters against ESD and AC-line coupled surges. IC Role / Device Role / Timing Role: Primary-level uni-directional TVS placed after fuse and before rectifier, blocking reverse surges while allowing normal forward operation. Use Value: Withstands 500 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/42 Ω) testing. | Use Scenario: Front-end protection of Ethernet PHY or RS-485 transceivers on telecom line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage clamping device on differential pairs, coordinated with GDT or MOV secondary protection. Use Value: Fast 1.0 ns response and low VC preserve signal eye diagram integrity while diverting >30 A transients away from sensitive PHY circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/54 | Same DO-214AC (SMA) package; identical VWM, VBR, and VC; 400 W PPPM vs. 500 W | Lower peak power rating limits use in high-energy automotive transients; better suited for space-constrained consumer PCBs | Select SMAJ7.5A-E3/54 only if board layout requires surface-mount and surge energy remains below 400 W threshold. |
| 1.5KE7.5A | DO-201AD package; same VWM/VBR; 1500 W PPPM; higher IFSM (100 A) but larger footprint | Higher power handling supports industrial motor drive snubbing; less suitable for dense automotive modules | Choose 1.5KE7.5A when protecting high-current nodes where 1500 W clamping margin is required and board space allows axial DO-201AD. |
Compared with SMAJ7.5A-E3/54 and 1.5KE7.5A, the SA7.5HE3/54 uniquely balances 500 W surge capacity, AEC-Q101 qualification, and DO-15 form factor - making it optimal for cost-sensitive, high-volume automotive sensor modules requiring proven reliability and through-hole assembly compatibility.
Availability
SA7.5HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card protection requiring stable component supply, RoHS compliance, and AEC-Q101 validation.
Supply support for SA7.5HE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, standardized transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be rigorously controlled.
FAQ
What is the clamping voltage of the SA7.5HE3/54 under maximum rated surge current?
The SA7.5HE3/54 has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 38.8 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SA7.5HE3/54 maintains this clamping performance across its qualified temperature range.
Is the SA7.5HE3/54 suitable for bi-directional transient protection?
No, the SA7.5HE3/54 is a uni-directional TVS diode, indicated by the "A" suffix and cathode band marking. It blocks reverse current up to 7.5 V (VWM) and avalanches only in reverse bias. For bi-directional protection, Vishay offers the SA7.5CA variant. Using SA7.5HE3/54 in bi-directional applications risks forward conduction damage during positive transients - always verify polarity alignment in the SA7.5HE3/54 design-in.
Does the SA7.5HE3/54 meet automotive reliability standards?
Yes, the SA7.5HE3/54 carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay documentation (Rev. 18-Sep-12, Doc. #88378). This includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - validating its use in engine control, body electronics, and ADAS sensor modules. The SA7.5HE3/54 also meets JESD 201 Class 2 whisker resistance requirements.
What is the leakage current specification for the SA7.5HE3/54 at rated stand-off voltage?
At VWM = 7.5 V and TA = 25 °C, the SA7.5HE3/54 exhibits a maximum reverse leakage current (ID) of 50 μA. This low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive sensor bias networks. Leakage remains within specification up to +125 °C, with gradual increase governed by junction temperature derating curves in the SA7.5HE3/54 datasheet.
Can the SA7.5HE3/54 be used in place of the SA7.5A-E3/54?
Yes - the SA7.5HE3/54 is the AEC-Q101 qualified version of the SA7.5A-E3/54, sharing identical electrical characteristics (VWM, VBR, VC, PPPM) and DO-204AC package. The "HE3" suffix adds automotive qualification and JESD 201 Class 2 whisker resistance, while "E3" denotes commercial-grade RoHS compliance only. No PCB or schematic changes are needed when upgrading from SA7.5A-E3/54 to SA7.5HE3/54.
SA7.5HE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 35A
- 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)
SA7.5HE3/54 FAQ
1.How can I place an order for SA7.5HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5HE3/54 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 SA7.5HE3/54 reliable?
The price and inventory of SA7.5HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.5HE3/54 is usually 5 days.
3.What payment methods are accepted for SA7.5HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5HE3/54?
SA7.5HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5HE3/54 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 SA7.5HE3/54?
For technical support, including SA7.5HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5HE3/54 requirements.
6.How does Aetrix verify that SA7.5HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.5HE3/54 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 SA7.5HE3/54 meets industry standards.
7.What is the process for return or replacement of SA7.5HE3/54?
All SA7.5HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5HE3/54, 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 SA7.5HE3/54 part is unused and in its original packaging.
Return procedure for SA7.5HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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