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Vishay General Semiconductor - Diodes Division SM6T36CAHE3_A/H
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- Part No.:
- SM6T36CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36CAHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,761
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Product details
Overview
SM6T36CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 36 V standoff voltage (VWM), 49.9 V clamping voltage at 12 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It features AEC-Q101 qualification, glass passivated junction, and low inductance - deployed for ESD and surge protection on automotive sensor signal lines and power rails.
For engineers reviewing the SM6T36CAHE3_A/H datasheet, SM6T36CAHE3_A/H pinout, SM6T36CAHE3_A/H application, or SM6T36CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, 150 °C max junction temperature, RoHS-compliant matte tin terminals, MSL Level 1 rating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix designation, delivering identical breakdown (34.2–37.8 V at 1 mA) and clamping performance regardless of polarity. Its low RθJA of 100 °C/W and RθJL of 20 °C/W support thermal reliability under repetitive surge stress.
The device uses a glass-passivated silicon junction to ensure stable leakage (<1 μA at VWM) and robust surge handling up to 100 A IFSM (unidirectional only - not applicable here). It meets JESD201 Class 2 whisker resistance and is qualified per AEC-Q101 for automotive under-hood and ADAS sensor interface use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum reverse stand-off voltage before conduction begins; defines safe operating window for protected circuit |
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - guaranteed breakdown threshold ensures predictable turn-on during transients |
| VC @ IPPM | 49.9 V at 12 A (10/1000 μs) - clamping voltage limits downstream IC stress during 600 W surge events |
| PPPM | 600 W - peak pulse power rating determines survivability against lightning-induced or inductive-switching surges |
| TJ max | +150 °C - enables operation in high-temperature automotive environments without derating penalties |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 3.94 mm footprint and 2.20 mm height for compact PCB layout |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either direction; connects to protected line or ground reference |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or return rail during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage under thermal/humidity stress |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >1 kV/ns) |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking or special handling |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/FlexRay or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp ±300 V transients within 1 ns response time. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs while maintaining signal integrity below 49.9 V clamping threshold. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting induced spikes (>1 kV) on DIN-rail mounted I/O terminals before reaching isolation barrier. Use Value: Eliminates need for external RC snubbers by absorbing 600 W pulses without degradation across 1000+ surge cycles. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to local ground, clamping mode-switching transients up to ±400 V. Use Value: Maintains data integrity at 10 Mbps by limiting voltage excursion to <50 V during 10/1000 μs surges, avoiding receiver saturation. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 D+/D− lines in smart home hubs subjected to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to divert 8 kV contact discharge before reaching PHY IC. Use Value: Achieves IEC 61000-4-2 Level 4 compliance without degrading signal rise time due to sub-100 pF junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM/VC, but 400 W PPPM and SMA package (smaller thermal mass) | Limited to lower-energy transients; less suitable for automotive load dump | Select when space-constrained and surge energy ≤400 W required |
| 1.5KE36CA | Through-hole DO-201 package, 1500 W PPPM, higher VC (58.1 V) | Higher clamping voltage risks IC damage; requires PCB real estate and wave soldering | Choose for legacy through-hole designs needing higher peak power |
Compared with SMAJ36CA and 1.5KE36CA, SM6T36CAHE3_A/H delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, and SMB footprint - making it preferred for new automotive and industrial SMT designs requiring reliable bidirectional clamping without layout compromise.
Availability
SM6T36CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SM6T36CAHE3_A/H 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 and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, lightning, and inductive switching surges is mission-critical.
FAQ
What does the "CA" suffix indicate in SM6T36CAHE3_A/H?
The "CA" suffix in SM6T36CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates polarity marking on the SMB package and allows use on AC-coupled lines or differential pairs without orientation concerns - unlike unidirectional variants such as SM6T36A.
Is SM6T36CAHE3_A/H suitable for automotive applications?
Yes, SM6T36CAHE3_A/H is AEC-Q101 qualified and manufactured with HE3 suffix indicating automotive-grade screening. It supports operation from −65 °C to +150 °C, withstands mechanical shock and thermal cycling per automotive standards, and is commonly used in ADAS sensor interfaces and body control modules.
What is the clamping voltage of SM6T36CAHE3_A/H at rated surge current?
The clamping voltage of SM6T36CAHE3_A/H is 49.9 V measured at 12 A peak pulse current using a 10/1000 μs waveform. This value defines the maximum voltage seen by downstream circuitry during a standardized surge event and is critical for ensuring protected ICs remain within absolute maximum ratings.
Does SM6T36CAHE3_A/H require special PCB layout considerations?
Yes - for optimal performance, SM6T36CAHE3_A/H should be mounted on minimum 5.0 mm × 5.0 mm copper pads per terminal to achieve rated 600 W pulse power. Short, direct traces to protected line and ground minimize inductance; avoid vias or narrow traces between TVS and protected node to preserve fast clamping response.
How does the HE3 suffix differ from E3 or M3 in SM6T36CAHE3_A/H?
The HE3 suffix in SM6T36CAHE3_A/H indicates RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from E3 (commercial RoHS) and M3 (halogen-free RoHS). HE3 devices undergo additional stress testing including temperature cycling, HAST, and mechanical shock to meet automotive reliability requirements.
SM6T36CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T36CAHE3_A/H FAQ
1.How can I place an order for SM6T36CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36CAHE3_A/H 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 SM6T36CAHE3_A/H reliable?
The price and inventory of SM6T36CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T36CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36CAHE3_A/H?
SM6T36CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36CAHE3_A/H 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 SM6T36CAHE3_A/H?
For technical support, including SM6T36CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T36CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T36CAHE3_A/H 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 SM6T36CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T36CAHE3_A/H?
All SM6T36CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36CAHE3_A/H, 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 SM6T36CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T36CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36CAHE3_A/H Tags
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