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Vishay General Semiconductor - Diodes Division SA30CHE3/54
- Part No.:
- SA30CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30CHE3/54.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,288
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Product details
Overview
SA30CHE3/54 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 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage (VC) at 10 A peak pulse current, 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA30CHE3/54 datasheet, SA30CHE3/54 pinout, SA30CHE3/54 application, or SA30CHE3/54 equivalent, key selection criteria include bi-directional clamping capability, 175 °C max junction temperature, RoHS-compliant HE3 whisker-tested terminals, and compatibility with inductive load switching protection in automotive ECUs and sensor interfaces.
Technical Context
The SA30CHE3/54 operates as a bi-directional avalanche breakdown device with symmetrical clamping in both polarities, enabling transient suppression on AC-coupled or floating lines without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 µs pulses.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and supports operation from –55 °C to +175 °C. The device exhibits a ±5 % breakdown voltage tolerance (33.3–36.8 V at 1 mA), 1.0 µA max reverse leakage at VWM, and 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Ensures reliable turn-on within defined tolerance band during overvoltage events |
| VC @ IPPM | 48.4 V at 10 A - Limits downstream circuit voltage to safe level during 10/1000 µs transient |
| PPPM | 500 W - Sustains high-energy surges common in automotive load-dump or inductive switch-off scenarios |
| TJ max | +175 °C - Enables placement near hot components in engine control units or power modules |
| Package | DO-204AC (DO-15) - Industry-standard through-hole package with 0.300" lead spacing and UL 94 V-0 molding |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics per stress test requirements including HTOL, TC, and HAST |
Pinout & Package
SA30CHE3/54 is a two-terminal bi-directional TVS diode in DO-204AC (DO-15) package with no polarity marking. Both leads are electrically symmetrical and interchangeable; neither functions as anode or cathode in normal operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (both) | Bi-directional transient clamp node | Provides identical clamping behavior regardless of voltage polarity - suitable for AC lines, differential buses, or ungrounded sensor outputs |
| Case | Non-conductive epoxy body | Provides mechanical protection, electrical isolation, and UL 94 V-0 flammability compliance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable, repeatable avalanche breakdown with minimal parameter drift over lifetime and temperature |
| 500 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil de-energization or alternator load dump without degradation |
| AEC-Q101 qualification | Validates robustness for automotive under-hood and chassis applications requiring extended temperature and reliability compliance |
| Matte tin-plated leads, JESD 201 Class 2 whisker tested | Supports long-term solder joint integrity in high-vibration environments and eliminates tin whisker risk in sealed assemblies |
| Bi-directional configuration (CA suffix) | Eliminates need for polarity-aware layout - simplifies PCB routing for differential or floating signal paths |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O pins and CAN transceiver inputs from load-dump spikes and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between protected line and ground, responding within <1 ns to limit transient excursions. Use Value: Maintains system uptime by preventing latch-up or gate oxide damage in MCU peripherals during ISO 7637-2 Pulse 5a events. | Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt protector across signal-to-ground, activated only above 30 V threshold. Use Value: Preserves signal fidelity in 4–20 mA loops while suppressing >15 kV contact ESD per IEC 61000-4-2 without adding filtering delay. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Feedback |
Use Scenario: Guarding Ethernet PHY interface lines against lightning-induced surges and induced transients on building-wiring backplanes. IC Role / Device Role / Timing Role: Primary-level TVS in series with gas discharge tube (GDT), clamping common-mode surges before secondary protection stages. Use Value: Reduces let-through energy to <50 mJ, enabling use of smaller secondary suppressors and meeting GR-1089-CORE Level 3 requirements. | Use Scenario: Safeguarding hall-effect rotor position feedback signals in BLDC motor controllers inside washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Fast-response shunt element across low-voltage analog feedback path (e.g., 0–5 V), triggered by commutation-induced ringing. Use Value: Prevents false zero-cross detection and torque ripple by limiting transient overshoot to <48.4 V, preserving closed-loop stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/52 | Uni-directional; 30 V VWM, 48.4 V VC @ 10 A, same DO-214AC package but surface-mount | Requires polarity-aware layout; unsuitable for AC or floating lines without external biasing | Select when board space is constrained and signal polarity is fixed (e.g., DC power rail protection) |
| 1.5KE30CA | Same bi-directional function, 30 V VWM, but larger DO-201AE package and 1.5 kW PPPM | Better suited for higher-energy transients (e.g., industrial mains input); less optimal for dense automotive PCBs | Choose when surge energy exceeds 500 W and thermal mass allows larger footprint |
Compared with SMAJ30A-E3/52 and 1.5KE30CA, SA30CHE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and bi-directional symmetry - making it the preferred choice for automotive sensor nodes and compact industrial modules where reliability, polarity insensitivity, and legacy assembly processes matter.
Availability
SA30CHE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom line card surge mitigation requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for SA30CHE3/54 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 automotive-grade validation.
The SAxxCH series delivers AEC-Q101-qualified bi-directional TVS diodes optimized for harsh-environment transient suppression in engine control, body electronics, and ADAS subsystems - balancing clamping precision, thermal robustness, and manufacturability.
FAQ
What does the "HE3" suffix indicate in SA30CHE3/54?
The HE3 suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker-resistant matte tin plating. This distinguishes SA30CHE3/54 from commercial-grade E3 variants and confirms its suitability for automotive under-hood applications where vibration, temperature cycling, and long-term solder joint integrity are critical. SA30CHE3/54 meets all stress tests defined in AEC-Q101 Rev D.
Is SA30CHE3/54 suitable for protecting CAN bus lines?
Yes - SA30CHE3/54 is commonly used for CAN FD and classical CAN bus protection due to its bi-directional clamping, low clamping voltage (48.4 V), and fast response time (<1 ns). Its 30 V stand-off voltage aligns with typical CAN common-mode range, and its DO-15 package allows easy placement across differential pair and ground. SA30CHE3/54 has been validated in multiple automotive CAN node reference designs.
How does SA30CHE3/54 differ from SA30A-E3/54?
SA30CHE3/54 is bi-directional (CA suffix), while SA30A-E3/54 is uni-directional (A suffix). The former clamps symmetrically in both polarities and has no polarity marking; the latter requires correct cathode orientation and provides forward conduction path. SA30CHE3/54 is specified for applications like AC-coupled sensors or floating buses where polarity cannot be assumed - a key distinction confirmed in Vishay's SA5.0A–SA170CA datasheet revision 18-Sep-12.
What is the maximum peak pulse current rating for SA30CHE3/54?
SA30CHE3/54 is rated for 10 A peak pulse current (IPPM) under the standard 10/1000 µs waveform, corresponding to its 48.4 V clamping voltage and 500 W peak pulse power. This value is explicitly listed in the Electrical Characteristics table on page 2 of the Vishay document number 88378. Derating applies above TA = 25 °C per Figure 2.
Does SA30CHE3/54 require a heatsink for continuous operation?
No - SA30CHE3/54 is rated for 3.0 W steady-state power dissipation on an infinite heatsink at TL = 75 °C (per Figure 5), but it is intended for transient-only operation. In normal use, it remains near ambient temperature between surges. No external heatsink is required unless subjected to repetitive high-duty-cycle pulses - a condition outside its specified 0.01 % duty cycle limit. SA30CHE3/54 relies on thermal mass of PCB copper for brief energy absorption.
SA30CHE3/54 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
SA30CHE3/54 FAQ
1.How can I place an order for SA30CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30CHE3/54 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 SA30CHE3/54 reliable?
The price and inventory of SA30CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA30CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30CHE3/54?
SA30CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30CHE3/54 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 SA30CHE3/54?
For technical support, including SA30CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30CHE3/54 requirements.
6.How does Aetrix verify that SA30CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA30CHE3/54 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 SA30CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA30CHE3/54?
All SA30CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA30CHE3/54, 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 SA30CHE3/54 part is unused and in its original packaging.
Return procedure for SA30CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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