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Vishay General Semiconductor - Diodes Division SA7.0A-E3/54
- Part No.:
- SA7.0A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0A-E3/54.pdf
- Description:
- TVS DIODE 7VWM 12VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,644
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Product details
Overview
SA7.0A-E3/54 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 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 41.7 A peak pulse current (IPPM), 12.0 V clamping voltage (VC) at IPPM, and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to safeguard power rails and I/O lines in industrial power supplies.
For engineers reviewing the SA7.0A-E3/54 datasheet, SA7.0A-E3/54 pinout, SA7.0A-E3/54 application, or SA7.0A-E3/54 equivalent, key selection criteria include its 7.0 V stand-off rating, DO-15 mechanical compatibility, AEC-Q101 qualification status, unidirectional polarity, and 12.0 V clamping performance under 41.7 A transient stress.
Technical Context
The SA7.0A-E3/54 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to voltage transients. Its unidirectional configuration provides reverse-biased clamping only, with cathode marked by color band. The device meets JESD22-B106 solderability and JESD201 Class 1A whisker resistance requirements.
Thermal derating follows a linear curve from 3.0 W at TL = 75 °C down to zero at TJ = 175 °C. It supports repetitive surge events at ≤0.01% duty cycle and withstands 70 A non-repetitive forward surge (IFSM) per 10 ms half-sine wave - critical for inductive load switching protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - defines reliable avalanche onset window for design margining |
| VC @ IPPM | 12.0 V at 41.7 A - peak clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 500 W - surge energy handling capacity under standardized 10/1000 μs waveform |
| ID @ VWM | 150 μA - low leakage ensures minimal standby power loss in protected circuits |
| TJ max | +175 °C - enables operation in high-temperature industrial and automotive under-hood environments |
| Package | DO-15 (DO-204AC) - industry-standard axial leaded package with 0.432 g unit weight and 4000/reel tape-and-reel delivery |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; cathode indicated by color band on unidirectional devices. Leads conform to J-STD-002 and JESD 22-B102 solderability standards. Solder dip rated at 275 °C max for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 7 V rail) to shunt overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche behavior and long-term reliability under repeated surge stress |
| 500 W peak pulse power | Supports robust protection against IEC 61000-4-5 Level 4 (4 kV) surges in industrial power inputs |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive electronics use including body control modules and sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil flyback) |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure compliance for safety-critical end equipment |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 7 V auxiliary power rail in programmable logic controller (PLC) power module from inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between rail and ground to clamp voltage excursions above 12.0 V. Use Value: Limits transient-induced damage to DC-DC converters and microcontrollers by clamping within 12.0 V at 41.7 A peak current. | Use Scenario: Safeguarding LIN bus signal line in automotive door module against ESD and load dump coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line referenced to chassis ground, leveraging 7.0 V VWM to avoid false triggering. Use Value: Prevents latch-up or permanent damage to LIN transceivers during ±8 kV contact ESD events per ISO 10605. |
| Consumer Appliance Motor Control | Telecom AC-DC Adapter Input Stage |
Use Scenario: Suppressing flyback spikes from brushed DC motor drivers in smart home appliances. IC Role / Device Role / Timing Role: Unidirectional clamp across motor terminals or H-bridge supply rail, triggered only during reverse overvoltage events. Use Value: Extends MOSFET lifetime by limiting drain-source voltage to ≤12.0 V during 41.7 A inductive kickback pulses. | Use Scenario: Front-end surge suppression on primary-side rectified output of universal-input AC-DC adapters. IC Role / Device Role / Timing Role: Secondary-side TVS on 7 V bias rail feeding PWM controller IC, coordinated with MOV and fuse. Use Value: Maintains system uptime by preventing controller IC reset or burnout during lightning-induced surges up to 500 W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A | Same VWM (7.0 V), identical DO-214AC package, but lower PPPM (400 W) and higher VC (12.5 V) | Surface-mount alternative requiring PCB layout change; less suitable for high-energy 500 W surges | Select SMAJ7.0A only when space-constrained SMT assembly is mandatory and surge threat level is ≤400 W |
| 1.5KE7.0A | Higher PPPM (1500 W), larger DO-201AD package, same VWM and VBR range, but no AEC-Q101 qualification | Used in legacy industrial power designs where board space allows larger axial package and automotive qualification is not required | Choose 1.5KE7.0A for higher-energy surge immunity where AEC-Q101 is unnecessary and thermal mass is available |
Compared with SMAJ7.0A and 1.5KE7.0A, the SA7.0A-E3/54 uniquely balances 500 W surge capability, DO-15 axial form factor, AEC-Q101 qualification, and tight 12.0 V clamping - making it optimal for cost-sensitive, high-reliability industrial and automotive applications requiring through-hole assembly.
Availability
SA7.0A-E3/54 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface protection, and consumer appliance motor control requiring stable component supply and RoHS-compliant sourcing.
Supply support for SA7.0A-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, MOSFETs, and optoelectronics with emphasis on reliability and application-specific performance.
The SA7.0A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SA7.0A-E3/54 at its rated peak pulse current?
The SA7.0A-E3/54 has a maximum clamping voltage (VC) of 12.0 V at its specified peak pulse current (IPPM) of 41.7 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting during surge events. The SA7.0A-E3/54 maintains this clamping performance across its full operating temperature range of –55 °C to +175 °C.
Is SA7.0A-E3/54 qualified for automotive applications?
Yes, the SA7.0A-E3/54 is AEC-Q101 qualified per the Vishay datasheet revision dated 27-Sep-2021. The "E3" suffix denotes RoHS-compliant commercial grade with JESD201 Class 1A whisker resistance, and the device is explicitly listed in the AEC-Q101 qualified section of the SA5.0A–SA170CA family documentation. SA7.0A-E3/54 is approved for use in automotive body electronics and sensor interfaces.
What does the "/54" in SA7.0A-E3/54 indicate?
The "/54" in SA7.0A-E3/54 is Vishay's preferred package code denoting 13-inch diameter paper tape and reel packaging with a base quantity of 4000 units per reel. This delivery mode is standard for automated SMT and through-hole assembly lines. The SA7.0A-E3/54 also has a unit weight of 0.432 g, consistent with DO-15 mechanical specifications.
How does SA7.0A-E3/54 differ from bidirectional variants like SA7.0CA?
The SA7.0A-E3/54 is unidirectional with cathode marking and clamps only in reverse bias, while SA7.0CA is bidirectional with no polarity marking and clamps symmetrically in both directions. Their VWM and VBR values differ: SA7.0A-E3/54 has VWM = 7.0 V and VBR = 7.78–8.60 V, whereas SA7.0CA has VWM = 7.0 V but VBR = 7.78–8.60 V in both directions. SA7.0A-E3/54 is used where polarity is known and controlled; SA7.0CA suits AC-coupled or differential lines.
What is the maximum reverse leakage current for SA7.0A-E3/54 at its stand-off voltage?
The SA7.0A-E3/54 exhibits a maximum reverse leakage current (ID) of 150 μA at its rated stand-off voltage (VWM) of 7.0 V and TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits and avoids unintended biasing of downstream components. Leakage remains within specification up to +125 °C, with gradual increase governed by junction temperature effects.
SA7.0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- 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)
SA7.0A-E3/54 FAQ
1.How can I place an order for SA7.0A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0A-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 SA7.0A-E3/54 reliable?
The price and inventory of SA7.0A-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 SA7.0A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA7.0A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0A-E3/54?
SA7.0A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0A-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 SA7.0A-E3/54?
For technical support, including SA7.0A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0A-E3/54 requirements.
6.How does Aetrix verify that SA7.0A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.0A-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 SA7.0A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA7.0A-E3/54?
All SA7.0A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0A-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 SA7.0A-E3/54 part is unused and in its original packaging.
Return procedure for SA7.0A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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