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Vishay General Semiconductor - Diodes Division SA64CHE3/54
- Part No.:
- SA64CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64CHE3/54.pdf
- Description:
- TVS DIODE 64VWM 114VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,019
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Product details
Overview
SA64CHE3/54 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 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 4.9 A peak pulse current (IPPM), and clamps to ≤103 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor line protection.
For engineers reviewing the SA64CHE3/54 datasheet, SA64CHE3/54 pinout, SA64CHE3/54 application, or SA64CHE3/54 equivalent, this device serves as a robust, RoHS-compliant, bi-directional surge protector for 12 V and 24 V automotive subsystems, industrial I/O interfaces, and telecom line cards where bidirectional transient immunity is required without polarity constraints.
Technical Context
The SA64CHE3/54 operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while its 175 °C maximum junction temperature supports under-hood automotive deployment.
It delivers 500 W peak pulse power per the standard 10/1000 μs waveform with 0.01% duty cycle, and exhibits low incremental clamping resistance - VC − VBR = 24.4 V at IPPM, confirming effective voltage limiting during ESD or load-dump events. The device is not a voltage regulator or rectifier; it functions exclusively as a passive overvoltage clamp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 12 V/24 V systems. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system max operating voltage. |
| IPPM | 4.9 A - Peak surge current it safely shunts during 10/1000 μs transient; determines minimum series impedance needed. |
| VC @ IPPM | ≤103 V - Clamped voltage under full-rated surge; defines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Surge energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3. |
| TJ max | 175 °C - Enables placement near heat sources (e.g., engine control units) without derating concerns. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics, including temperature cycling and HTRB. |
Pinout & Package
SA64CHE3/54 is housed in a DO-204AC (DO-15) molded epoxy package with axial leads. Bi-directional construction means no cathode marking; both terminals are functionally identical and interchangeable. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and rated for 275 °C dip-soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche junction terminal | Either lead may connect to line or ground; no polarity dependency enables simplified layout in AC or differential paths. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 500 W peak pulse power (10/1000 μs) | Validates robustness against automotive load dump (ISO 7637-2 Pulse 5a) and industrial surge events (IEC 61000-4-5). |
| AEC-Q101 qualification | Confirms suitability for automotive powertrain, body control, and ADAS modules without additional qualification effort. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 grade, JESD 201 Class 2 whisker resistance, and UL 94 V-0 compliant molding compound. |
| Low ID ≤ 1.0 μA at VWM | Minimizes standby power loss and avoids false triggering in high-impedance sensor or communication lines. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and inductive switching noise in vehicle cabins or engine bays. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between signal line and chassis ground, absorbing transients before they reach sensitive input stages. Use Value: Prevents latch-up or damage to microcontrollers and ADC front-ends by limiting voltage excursions to ≤103 V during 4 kV ESD or 100 V load dump events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to divert induced lightning or switching transients away from precision op-amps and isolators. Use Value: Maintains signal integrity by clamping transients within 1 ns response time while adding <1 pF parasitic capacitance - negligible at 1 kHz bandwidth. |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and POTS interface ICs from induced surges on outdoor copper pairs per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at board edge, coordinated with GDT or polymer PTC for multi-stage protection. Use Value: Withstands repeated 500 W surges without parameter shift, enabling >100,000 surge cycles in central office equipment. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected clamp across motor terminals or H-bridge outputs to quench inductive kickback before MOSFET drain-source breakdown. Use Value: Limits VDS stress to ≤103 V, allowing use of 100 V-rated MOSFETs instead of 150 V parts - reducing conduction loss and BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/5A | Uni-directional; 64 V VWM, 71.1–78.6 V VBR, same PPPM/VC, but requires correct polarity orientation. | Suitable only where circuit polarity is fixed and ground-referenced; cannot protect AC or floating signals. | Select SMAJ64A-E3/5A only if layout allows strict anode/cathode assignment and system grounding eliminates need for symmetry. |
| 1.5KE68CA | Higher PPPM (1500 W), larger DO-201 package (5.6 mm diameter), 68 V VWM, 75.6–83.6 V VBR, slower thermal response. | Better for infrequent high-energy surges (e.g., lightning), but excessive VC (112 V) risks downstream ICs in fast-edge systems. | Choose 1.5KE68CA when surge amplitude exceeds 500 W and PCB space permits larger DO-201 footprint; avoid in space-constrained automotive modules. |
Compared with SMAJ64A-E3/5A and 1.5KE68CA, SA64CHE3/54 uniquely combines bi-directional symmetry, AEC-Q101 qualification, and DO-15 compactness - making it optimal for automotive and industrial designs requiring polarity-agnostic, high-reliability transient suppression in tight layouts.
Availability
SA64CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC analog input conditioning, and telecom line card surge immunity requiring stable component supply across extended production lifecycles.
Supply support for SA64CHE3/54 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 passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The SAxxCH series delivers AEC-Q101-qualified, bi-directional TVS diodes optimized for harsh-environment transient suppression in automotive power distribution, body electronics, and industrial control systems.
FAQ
What is the polarity configuration of SA64CHE3/54?
The SA64CHE3/54 is a bi-directional TVS diode with symmetrical avalanche characteristics in both directions. It has no cathode marking and can be installed without regard to orientation - making it ideal for protecting AC-coupled signals, differential buses, or floating grounds where polarity is undefined or variable. This differs from uni-directional variants like SA64A-E3/54, which require correct anode/cathode placement.
Does SA64CHE3/54 meet automotive qualification standards?
Yes, SA64CHE3/54 carries the HE3 suffix, indicating full AEC-Q101 qualification per the Vishay SAxxCH family specification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST), validating its use in automotive powertrain, chassis, and infotainment modules without additional qualification.
What is the maximum clamping voltage of SA64CHE3/54 under surge conditions?
The SA64CHE3/54 clamps to a maximum of 103 V when subjected to its rated 4.9 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per Figure 7 in the datasheet and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does SA64CHE3/54 differ from SA64A-E3/54?
SA64CHE3/54 is bi-directional (suffix "CA"), while SA64A-E3/54 is uni-directional (suffix "A"). Both share identical VWM (64 V), VBR range (71.1–78.6 V), and PPPM (500 W), but SA64A-E3/54 has a cathode band and conducts forward current up to 70 A (IFSM); SA64CHE3/54 has no polarity marking and no specified IFSM since it blocks in both directions. Use SA64CHE3/54 where signal symmetry matters.
Is SA64CHE3/54 compatible with lead-free reflow and wave soldering processes?
Yes, SA64CHE3/54 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, supporting both lead-free reflow (JEDEC J-STD-020 profile) and wave soldering. Its DO-204AC package withstands 275 °C dip-soldering for up to 10 seconds per JESD 22-B106, and the HE3 suffix confirms JESD 201 Class 2 whisker resistance - ensuring long-term interconnect reliability in automated assembly.
SA64CHE3/54 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 114V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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)
SA64CHE3/54 FAQ
1.How can I place an order for SA64CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64CHE3/54 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 SA64CHE3/54 reliable?
The price and inventory of SA64CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA64CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64CHE3/54?
SA64CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64CHE3/54 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 SA64CHE3/54?
For technical support, including SA64CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64CHE3/54 requirements.
6.How does Aetrix verify that SA64CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA64CHE3/54 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 SA64CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA64CHE3/54?
All SA64CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA64CHE3/54, 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 SA64CHE3/54 part is unused and in its original packaging.
Return procedure for SA64CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA64CHE3/54 Tags
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