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Vishay General Semiconductor - Diodes Division SMA5J20CHE3/61
- Part No.:
- SMA5J20CHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J20CHE3/61.pdf
- Description:
- TVS DIODE 20VWM 35.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,401
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Product details
Overview
SMA5J20CHE3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on power and signal lines. It features a 20 V stand-off voltage (VWM), 32.4 V maximum clamping voltage (VC) at 15.4 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMA5J20CHE3/61 datasheet, SMA5J20CHE3/61 pinout, SMA5J20CHE3/61 application, or SMA5J20CHE3/61 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, 150 °C junction temperature rating, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bi-directional construction, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports effective energy diversion during ESD or load-switching events.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and is qualified to AEC-Q101 for automotive under-hood applications. Thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), confirming suitability for moderate-power transient suppression with minimal board-level thermal design overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 22.2 V / 24.5 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 32.4 V - Clamped voltage seen by protected circuit when subjected to 15.4 A 10/1000 µs surge |
| PPPM | 500 W - Peak transient power the device can absorb without failure under standardized waveform |
| IPPM | 15.4 A - Maximum non-repetitive surge current supported at rated clamping voltage |
| TJ max. | +150 °C - Maximum allowable junction temperature, enabling operation in engine bay or industrial enclosures |
| MSL Level | Level 1 - Compatible with standard lead-free reflow profiles up to 260 °C peak |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads; no polarity marking for bi-directional configuration; terminals solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional terminal pair | Identical electrical behavior in either direction; connected across protected line and ground or differential pair |
| Case (body) | Non-electrical mechanical interface | No internal connection; serves only as thermal path and mounting structure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures consistent VBR tolerance and long-term stability under repeated surge stress |
| Low profile DO-214AC package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment |
| HE3 suffix | Indicates RoHS-compliant construction with JESD 201 Class 2 whisker resistance for reliable solder joints |
| 500 W peak pulse power | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges in 12 V/24 V systems |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Bi-directional TVS placed between power rail and chassis ground to clamp surges above 32.4 V. Use Value: Prevents damage to downstream DC/DC converters and microcontrollers during ISO 7637-2 Pulse 5a events up to 500 W. | Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., 4–20 mA loop) to suppress EFT bursts. Use Value: Maintains signal integrity under IEC 61000-4-4 level 4 fast transient bursts without adding capacitance-induced distortion. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Safeguarding USB 2.0 data lines in set-top boxes exposed to human-body-model ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed across D+/D− lines to clamp ±15 kV HBM discharges. Use Value: Limits clamping voltage to ≤32.4 V, preventing latch-up or gate oxide damage in USB transceivers. | Use Scenario: Protecting ADSL line drivers from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: TVS installed between tip/ring and ground in line card front-end to absorb 10/1000 µs surges. Use Value: Withstands 500 W peak power and 15.4 A surge current per ITU-T K.20/K.21 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J20CA-E3/61 | Same VWM (20 V), VC (32.4 V), and PPPM (500 W); commercial-grade (non-AEC-Q101); E3 suffix only | Lacks automotive qualification; suitable for consumer/industrial designs without AEC compliance mandates | Select when cost sensitivity outweighs automotive reliability requirements |
| SMCJ20CAHE3_A/H | Higher PPPM (1500 W); larger DO-214AB (SMC) package; same VWM and AEC-Q101 qualification | Requires more PCB area but delivers 3× surge energy handling for severe environments | Choose when system-level surge testing exceeds 500 W or requires higher IPPM margin |
Compared with SMA5J20CHE3/61, SMA5J20CA-E3/61 offers identical electrical performance but lacks AEC-Q101 validation, while SMCJ20CAHE3_A/H provides triple the surge power rating in a larger footprint-enabling trade-offs between board space, qualification, and energy absorption.
Availability
SMA5J20CHE3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB port protection, and telecom DSL line surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J20CHE3/61 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in space-constrained automotive and industrial applications where bi-directional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMA5J20CHE3/61 under a 10/1000 µs surge?
The SMA5J20CHE3/61 exhibits a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 15.4 A using the 10/1000 µs waveform. This value is measured per JEDEC/ANSI standards and defines the upper voltage limit imposed on protected circuits during transient events. The SMA5J20CHE3/61 maintains this clamping performance across its full operating temperature range from −55 °C to +150 °C.
Is the SMA5J20CHE3/61 suitable for automotive applications?
Yes, the SMA5J20CHE3/61 is AEC-Q101 qualified and explicitly intended for automotive use, including under-hood modules subject to temperature extremes, vibration, and electrical transients. Its HE3 suffix confirms RoHS compliance and JESD 201 Class 2 whisker resistance, and its DO-214AC package meets MSL Level 1 reflow requirements. The SMA5J20CHE3/61 is commonly deployed in body control modules, infotainment power supplies, and sensor interfaces.
How does the bi-directional nature of the SMA5J20CHE3/61 affect its circuit placement?
The SMA5J20CHE3/61 has no polarity marking and functions identically in both directions, making it ideal for protecting AC-coupled signals, floating buses, or unidirectional lines where reverse voltage risk exists. It is placed directly across the protected node and ground (or reference rail), eliminating orientation concerns during assembly. Unlike uni-directional TVS diodes, the SMA5J20CHE3/61 avoids forward conduction issues during negative transients.
What is the thermal resistance of the SMA5J20CHE3/61, and how does it impact layout?
The SMA5J20CHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead resistance (RθJL) of 25 °C/W when mounted on 0.2″ × 0.2″ copper pads. This means PCB layout must provide adequate copper area at both terminals to maintain safe junction temperatures during repetitive surges. For sustained duty cycles, thermal vias and inner-layer copper pours are recommended to reduce RθJA below 60 °C/W.
Does the SMA5J20CHE3/61 meet industry surge immunity standards?
Yes, the SMA5J20CHE3/61 supports compliance with ISO 7637-2 (Pulse 1, 2a, 5a), IEC 61000-4-5 (10/1000 µs), and IEC 61000-4-4 (EFT) when applied per Vishay's recommended layout guidelines. Its 500 W PPPM rating and 32.4 V clamping enable protection against 12 V/24 V system-level transients up to Level 4 severity. The SMA5J20CHE3/61 is routinely used in designs targeting CISPR 25 Class 5 and ISO 11452-2 certification.
SMA5J20CHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 35.8V
- Current - Peak Pulse (10/1000µs):
- 14A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J20CHE3/61 FAQ
1.How can I place an order for SMA5J20CHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J20CHE3/61 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 SMA5J20CHE3/61 reliable?
The price and inventory of SMA5J20CHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J20CHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J20CHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J20CHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J20CHE3/61?
SMA5J20CHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J20CHE3/61 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 SMA5J20CHE3/61?
For technical support, including SMA5J20CHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J20CHE3/61 requirements.
6.How does Aetrix verify that SMA5J20CHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J20CHE3/61 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 SMA5J20CHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J20CHE3/61?
All SMA5J20CHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J20CHE3/61, 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 SMA5J20CHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J20CHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J20CHE3/61 Tags
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