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Vishay General Semiconductor - Diodes Division SA7.5CHE3/54
- Part No.:
- SA7.5CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5CHE3/54.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,539
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Product details
Overview
SA7.5CHE3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 38.8 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 μs waveform), with AEC-Q101 qualification for automotive use.
For engineers reviewing the SA7.5CHE3/54 datasheet, SA7.5CHE3/54 pinout, SA7.5CHE3/54 application, or SA7.5CHE3/54 equivalent, this device serves as a robust, RoHS-compliant, lead-free transient protector for sensitive analog and digital interfaces in harsh environments - especially where bidirectional surge immunity, low clamping voltage (12.9 V at IPPM), and high reliability under repetitive surges are required.
Technical Context
The SA7.5CHE3/54 operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5% min/max spread) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
It is rated for 175 °C maximum junction temperature and supports 500 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, derating linearly above 25 °C. The device exhibits 1.0 μA max reverse leakage at VWM, and its clamping voltage remains tightly controlled at 12.9 V under full-rated IPPM = 38.8 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction during normal operation. |
| IPPM | 38.8 A - Peak surge current it can safely divert per 10/1000 μs waveform; determines minimum series impedance needed for system-level protection. |
| VC | 12.9 V - Clamping voltage at IPPM; directly limits maximum stress seen by downstream ICs or MOSFETs during surge events. |
| PPPM | 500 W - Peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 3/4 surge testing. |
| TJ max | 175 °C - Maximum junction temperature rating enables deployment in under-hood automotive or industrial ambient conditions. |
| Qualification | AEC-Q101 qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Bi-directional polarity - no marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction terminals | No functional polarity - either lead may connect to line or ground; enables single-component protection of AC-coupled or differential signals. |
| Lead 1 | Terminal A | Electrically identical to Lead 2; interchangeable in PCB layout - no orientation dependency during placement. |
| Lead 2 | Terminal B | Provides mechanical anchoring and thermal path; lead length (0.300" min) supports standard DO-15 footprint and manual/automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR over lifetime and improved moisture resistance vs. epoxy-only passivation. |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 kV source impedance in industrial equipment. |
| AEC-Q101 qualification | Validates suitability for automotive infotainment, body control, and sensor interface modules requiring zero-failure field performance. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V or 5 V logic interfacing with external connectors. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified, matte tin-plated leads meeting JESD 201 Class 2 whisker resistance for long-term reliability. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across signal line and ground, responding within <1 ns to suppress ±100 V transients. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers while maintaining signal integrity due to low capacitance (<100 pF) and symmetrical clamping. |
Use Scenario: Safeguarding RS-485 transceivers (e.g., MAX1487, SN65HVD72) against EFT bursts and surge events in factory automation networks. IC Role / Device Role / Timing Role: Line-to-ground TVS on A/B differential pair, absorbing common-mode surges without disrupting DC bias or data eye. Use Value: Enables compliance with IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-5 (10/700 μs, 1 kV) without adding series impedance or signal distortion. |
| Consumer USB Port ESD Protection | Power Supply Input Surge Clamp |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines after primary polymer-based TVS, targeting contact discharge up to ±15 kV (IEC 61000-4-2). IC Role / Device Role / Timing Role: Fast-acting bi-directional clamp limiting voltage excursion to ≤12.9 V during sub-nanosecond ESD events. Use Value: Complements low-capacitance primary protectors by providing low-VC clamping without degrading 480 Mbps data integrity. |
Use Scenario: Input-stage transient suppression on 12 V DC power rails feeding microcontrollers or motor drivers in HVAC controllers and smart meters. IC Role / Device Role / Timing Role: Parallel-connected surge limiter that shunts >30 A transients away from upstream regulators and downstream loads. Use Value: Extends system uptime by preventing brownouts or resets caused by inductive switching spikes from relays or solenoids. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5AHE3/A | Uni-directional; same VWM (7.5 V), slightly higher VC (13.4 V), identical PPPM (400 W), SMA package. | Requires correct polarity placement; unsuitable for AC or differential lines without additional components. | Select when protecting unidirectional DC rails with strict space constraints (SMA footprint smaller than DO-15). |
| 1.5KE7.5CA | Same bi-directional function, higher PPPM (1500 W), larger DO-201 package, higher VC (12.0 V @ 123 A), not AEC-Q101 qualified. | Better for high-energy surges but lacks automotive qualification and has higher leakage (5.0 μA vs. 1.0 μA). | Choose for cost-sensitive industrial power supplies where AEC-Q101 is unnecessary and surge energy exceeds 500 W. |
Compared with SMAJ7.5AHE3/A and 1.5KE7.5CA, SA7.5CHE3/54 uniquely combines bi-directional symmetry, AEC-Q101 qualification, and DO-15 manufacturability - making it optimal for automotive and space-constrained industrial designs requiring guaranteed polarity-agnostic protection.
Availability
SA7.5CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication buses, consumer port protection, and DC power input stages requiring stable component supply and long-term lifecycle support.
Supply support for SA7.5CHE3/54 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, efficiency, and application-specific optimization.
The SAxxxC series is engineered for robust transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 validation, and compatibility with automated assembly processes.
FAQ
What is the polarity configuration of SA7.5CHE3/54?
The SA7.5CHE3/54 is a bi-directional TVS diode with symmetrical avalanche characteristics - neither terminal is designated anode or cathode. This allows it to protect AC-coupled signals, differential buses like RS-485, or any line where voltage transients may swing positive or negative relative to ground. No color band or marking is present on the DO-15 body.
Does SA7.5CHE3/54 meet automotive reliability standards?
Yes, SA7.5CHE3/54 carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥ 8 kV), making it suitable for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What is the maximum clamping voltage of SA7.5CHE3/54 under surge conditions?
The SA7.5CHE3/54 clamps to a maximum of 12.9 V when subjected to its rated peak pulse current of 38.8 A (10/1000 μs waveform). This value is measured per standard test conditions and ensures downstream 5 V or 3.3 V ICs remain within absolute maximum ratings during transient events.
Can SA7.5CHE3/54 be used in place of a uni-directional TVS like SA7.5A?
No - SA7.5CHE3/54 is bi-directional and cannot replace uni-directional SA7.5A in DC-only applications where forward conduction must be blocked. SA7.5A has a cathode band and conducts only in reverse; substituting SA7.5CHE3/54 would allow unintended forward current flow, potentially disrupting circuit bias or causing latch-up.
What packaging format does SA7.5CHE3/54 ship in?
SA7.5CHE3/54 ships in 13" diameter paper tape and reel format (package code "54"), with 4000 units per reel. The "E3" in the base part number denotes RoHS-compliant, commercial-grade termination; "HE3" indicates AEC-Q101 qualification - both share identical electrical specs and DO-204AC packaging.
SA7.5CHE3/54 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:
- -
- Bidirectional Channels:
- 1
- 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)
SA7.5CHE3/54 FAQ
1.How can I place an order for SA7.5CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5CHE3/54 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 SA7.5CHE3/54 reliable?
The price and inventory of SA7.5CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.5CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA7.5CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5CHE3/54?
SA7.5CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5CHE3/54 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 SA7.5CHE3/54?
For technical support, including SA7.5CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5CHE3/54 requirements.
6.How does Aetrix verify that SA7.5CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.5CHE3/54 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 SA7.5CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA7.5CHE3/54?
All SA7.5CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5CHE3/54, 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 SA7.5CHE3/54 part is unused and in its original packaging.
Return procedure for SA7.5CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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