My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T36CA-E3/5B
;;2.jpg)
- Part No.:
- SM6T36CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36CA-E3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,230
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T36CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 36 V standoff voltage (VWM), 49.9 V maximum clamping voltage at 12 A peak pulse current (10/1000 μs), 600 W peak pulse power rating, and operates from −65 °C to +150 °C - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SM6T36CA-E3/5B datasheet, SM6T36CA-E3/5B pinout, SM6T36CA-E3/5B application, or SM6T36CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, SMB package compatibility with automated SMT assembly, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
The SM6T36CA-E3/5B implements a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, eliminating need for series diodes or bridge configurations in AC-coupled lines.
It delivers 600 W peak pulse power handling under 10/1000 μs waveform per JEDEC standards, with low dynamic impedance (calculated ~4.2 Ω from VC/IPPM) ensuring stable clamping across varying surge magnitudes. Thermal design relies on PCB copper pad area (0.2" × 0.2") to sustain 5.0 W steady-state dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuit. |
| VBR (min/max) | 34.2 V / 37.8 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 49.9 V @ 12.0 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak transient energy absorption capacity; validates suitability for Level 4 IEC 61000-4-5 (4 kV) surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires ≥5.0 mm × 5.0 mm copper pads for rated power derating. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive environments and industrial enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, RoHS-compliant, MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | One terminal of symmetrical PN junction; conducts during negative voltage excursions above VBR. |
| Cathode | Transient current entry (positive half-cycle) | Second terminal of symmetrical PN junction; conducts during positive voltage excursions above VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity constraints. |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements up to 4 kV open-circuit (2 Ω source impedance) in standard test setups. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs/ICs. |
| AEC-Q101 qualified option available | HE3/HM3 variants meet automotive reliability standards; SM6T36CA-E3/5B is commercial-grade but shares identical die and package construction. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair or supply rail to clamp ±30 V transients within nanoseconds. Use Value: Prevents permanent damage to 3.3 V/5 V signal conditioning ICs while maintaining signal integrity due to low capacitance (<100 pF at 0 V). | Use Scenario: Shielding PLC digital input modules from inductive kickback when switching solenoids, contactors, or relays. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input line to divert >10 A surge currents away from optocoupler input stages. Use Value: Enables robust operation in harsh factory environments where repeated 600 W surges occur without degradation over 10⁵ events. |
| Telecom Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Safeguarding Ethernet PHY interfaces (10/100BASE-T) against lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Common-mode TVS array component used in conjunction with CM chokes to suppress differential and common-mode transients. Use Value: Achieves >15 kV ESD (IEC 61000-4-2) and 1 kV surge (IEC 61000-4-5) immunity without adding propagation delay or jitter. | Use Scenario: Adding secondary-level ESD protection on VBUS and D+/D− lines of USB 2.0 host ports in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed after primary polymer PTC fuse to absorb human-body-model discharges. Use Value: Limits voltage excursion to <50 V during 8 kV contact discharge, preventing USB controller reset or enumeration failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same SMB package, 600 W rating, but higher VWM (30.8 V vs. 33.0 V), slightly lower VC (49.9 V vs. 48.4 V), tighter VBR tolerance (±5 % vs. ±10 %). | Preferred for designs requiring tighter clamping consistency across temperature; not AEC-Q101 qualified in standard grade. | Select SMBJ36CA if tighter parametric control is required and automotive qualification is not mandatory. |
| P6SMB36CA | Same electrical specs and SMB footprint, but legacy naming; identical RθJA (100 °C/W), same RoHS/E3 suffix compliance; minor packaging difference (tape width/reel size). | No functional difference; used interchangeably in legacy BOMs and second-source procurement strategies. | Choose P6SMB36CA for continuity in long-lifecycle industrial programs already qualified with that base P/N. |
Compared with SMBJ36CA and P6SMB36CA, the SM6T36CA-E3/5B offers identical clamping performance and thermal behavior in SMB package, with verified compatibility in high-volume SMT lines using 13" tape-and-reel delivery (5B code), making it optimal for cost-sensitive consumer and industrial production where AEC-Q101 is not required.
Availability
SM6T36CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply, consistent tape-and-reel logistics, and RoHS-compliant manufacturing traceability.
Supply support for SM6T36CA-E3/5B 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 power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series was developed to deliver high-energy transient suppression in compact surface-mount packages for automotive, industrial, and communications systems where space, thermal performance, and surge immunity are critical.
FAQ
What is the polarity configuration of SM6T36CA-E3/5B?
The SM6T36CA-E3/5B is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SM6T36A), it has no cathode marking and functions identically in either orientation - ideal for AC-coupled or floating signal lines where polarity cannot be guaranteed. This behavior is confirmed in Vishay's SM6T datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
Does SM6T36CA-E3/5B meet AEC-Q101 qualification?
No, SM6T36CA-E3/5B is the commercial-grade RoHS-compliant version with E3 suffix. AEC-Q101 qualification is available only in variants with HE3 or HM3 suffixes (e.g., SM6T36CAHE3_B). The SM6T36CA-E3/5B shares identical die, package, and electrical characteristics but lacks the extended reliability testing required for automotive under-hood applications.
What is the maximum clamping voltage of SM6T36CA-E3/5B under standard test conditions?
The maximum clamping voltage (VC) of SM6T36CA-E3/5B is 49.9 V when subjected to a 10/1000 μs waveform at 12.0 A peak pulse current, as specified in Table "ELECTRICAL CHARACTERISTICS" of Vishay document 88385. This value is measured across the device terminals with recommended PCB pad layout (0.2" × 0.2" copper per terminal) at TA = 25 °C.
Can SM6T36CA-E3/5B replace SM6T36A in a design?
SM6T36CA-E3/5B can replace SM6T36A only if bidirectional clamping is required or acceptable. SM6T36A is unidirectional (cathode-marked) and blocks reverse current until breakdown, whereas SM6T36CA-E3/5B conducts in both directions. Substitution may cause unintended conduction in DC-biased circuits - verify signal polarity and biasing before replacement.
What is the thermal resistance and how does it affect PCB layout for SM6T36CA-E3/5B?
SM6T36CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, measured with 0.2" × 0.2" copper pads per terminal. To maintain rated 5.0 W power dissipation at TA = 50 °C, PCB layout must provide minimum 5.0 mm × 5.0 mm copper area per pad, with internal ground/power planes preferred for enhanced heat spreading - insufficient copper increases junction temperature and reduces surge endurance.
SM6T36CA-E3/5B 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T36CA-E3/5B FAQ
1.How can I place an order for SM6T36CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36CA-E3/5B 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 SM6T36CA-E3/5B reliable?
The price and inventory of SM6T36CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SM6T36CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36CA-E3/5B?
SM6T36CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36CA-E3/5B 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 SM6T36CA-E3/5B?
For technical support, including SM6T36CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36CA-E3/5B requirements.
6.How does Aetrix verify that SM6T36CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T36CA-E3/5B 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 SM6T36CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SM6T36CA-E3/5B?
All SM6T36CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36CA-E3/5B, 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 SM6T36CA-E3/5B part is unused and in its original packaging.
Return procedure for SM6T36CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36CA-E3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
