My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T36A-E3/5B
;;2.jpg)
- Part No.:
- SM6T36A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36A-E3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,370
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T36A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 30.8 V stand-off voltage (VWM), 34.2–37.8 V breakdown voltage (VBR) at 1 mA, 49.9 V max clamping voltage (VC) at 12.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It is widely used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the SM6T36A-E3/5B datasheet, SM6T36A-E3/5B pinout, SM6T36A-E3/5B application, or SM6T36A-E3/5B equivalent, key selection criteria include unidirectional polarity, SMB package compatibility, clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification availability in related variants.
Technical Context
The SM6T36A-E3/5B operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response to ESD and lightning-induced transients. Its low-inductance SMB package and 100 °C/W junction-to-ambient thermal resistance support reliable operation up to 150 °C junction temperature.
It delivers 600 W peak pulse power handling per 10/1000 μs waveform with 49.9 V clamping at 12.0 A IPPM, and exhibits ≤1.0 μA reverse leakage at 30.8 V VWM - enabling robust protection without loading sensitive circuits during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - ensures predictable avalanche initiation across process variation |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - defines worst-case clamped voltage seen by protected circuitry |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| RθJA | 100 °C/W - thermal resistance limiting junction temperature rise under sustained power dissipation |
| TJ max | +150 °C - maximum allowable junction temperature for long-term reliability |
| ID @ VWM | ≤1.0 μA - minimal leakage current preserves signal integrity and battery life in standby |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating |
| Glass passivated chip junction | Ensures stable VBR over time and humidity exposure; eliminates risk of junction corrosion |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time), improving clamping fidelity |
| RoHS-compliant, halogen-free option available | Meets environmental compliance requirements for automotive and industrial OEM programs |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Withstands 600 W pulses and clamps to ≤49.9 V, preventing damage to downstream 36 V-rated regulators and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) TVS connected across differential signal pair to shunt transients before front-end amplifier. Use Value: Maintains signal integrity with <1.0 μA leakage at 30.8 V, while clamping 8 kV HBM ESD to safe levels within nanoseconds. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs from surge coupling via mains input. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across bridge rectifier output to absorb switching and lightning-induced spikes. Use Value: 49.9 V clamping ensures protected 36 V-rated MOSFETs remain below breakdown threshold during 600 W transients. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: TVS placed between DC+ and ground to clamp common-mode surges entering via Ethernet cabling. Use Value: 30.8 V VWM allows normal 48 V operation while clamping transients to ≤49.9 V - compatible with 53 V max input ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Same SMB package, identical VWM/VBR/VC specs, but rated for 600 W with tighter VC tolerance (49.9 V vs. 50.0 V typical); RθJA = 100 °C/W identical | No functional difference in clamping or layout; differs only in tape-and-reel packaging (750 vs. 3200 units/reel) | Select SMBJ36A-E3/52 if smaller reel size aligns with SMT line replenishment cycle or pilot production volume |
| P6SMB36A | Identical electrical specs and SMB footprint; manufactured by STMicroelectronics; same 600 W rating, 30.8 V VWM, 49.9 V VC | Qualified to AEC-Q101 in HE3 variant (P6SMB36AHE3-A); Vishay SM6T36A-E3/5B offers AEC-Q101 via HE3/HM3 suffixes only | Choose P6SMB36A for dual-sourcing where ST's AEC-Q101-certified version is pre-qualified in automotive BOMs |
Compared with SMBJ36A-E3/52 and P6SMB36A, the SM6T36A-E3/5B provides identical clamping performance and thermal behavior in SMB package, but offers distinct supply chain advantages through Vishay's commercial-grade E3/5B reel configuration and documented automotive qualification pathway via HE3 suffix variants.
Availability
SM6T36A-E3/5B is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface design, and telecom DC feed protection requiring stable component supply, RoHS compliance, and consistent SMB package form factor.
Supply support for SM6T36A-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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The SM6T Series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where ESD, lightning, and inductive switching surges must be reliably clamped.
FAQ
What is the polarity configuration of SM6T36A-E3/5B?
The SM6T36A-E3/5B is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the SMB package body; the banded end connects to the protected line, and the unbanded (anode) end connects to ground. This configuration allows conduction only during positive transients relative to ground, making it ideal for DC power rail protection.
Does SM6T36A-E3/5B meet AEC-Q101 qualification?
The SM6T36A-E3/5B itself is RoHS-compliant commercial-grade. However, Vishay offers AEC-Q101 qualified versions under ordering codes SM6T36AHE3_B/I (halogen-free, RoHS-compliant, and AEC-Q101 qualified) and SM6T36AHM3_B/I. These variants share identical electrical specs and SMB package but undergo additional automotive stress testing and traceability controls.
What is the maximum clamping voltage of SM6T36A-E3/5B under standard test conditions?
The SM6T36A-E3/5B has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 μs waveform at 12.0 A peak pulse current (IPPM). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events.
Can SM6T36A-E3/5B be used in bidirectional applications?
No - SM6T36A-E3/5B is strictly unidirectional. For bidirectional transient suppression, Vishay specifies devices with "CA" suffix (e.g., SM6T36CA), which feature symmetrical breakdown in both directions. Using SM6T36A-E3/5B in bidirectional configurations risks failure during negative transients due to lack of reverse avalanche capability.
What is the thermal resistance and how does it affect PCB layout for SM6T36A-E3/5B?
The SM6T36A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surges, ensure minimum pad area per datasheet recommendation and avoid excessive copper isolation around the SMB footprint.
SM6T36A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SM6T36A-E3/5B FAQ
1.How can I place an order for SM6T36A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36A-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 SM6T36A-E3/5B reliable?
The price and inventory of SM6T36A-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 SM6T36A-E3/5B is usually 5 days.
3.What payment methods are accepted for SM6T36A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36A-E3/5B?
SM6T36A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36A-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 SM6T36A-E3/5B?
For technical support, including SM6T36A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36A-E3/5B requirements.
6.How does Aetrix verify that SM6T36A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T36A-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 SM6T36A-E3/5B meets industry standards.
7.What is the process for return or replacement of SM6T36A-E3/5B?
All SM6T36A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36A-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 SM6T36A-E3/5B part is unused and in its original packaging.
Return procedure for SM6T36A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T36A-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 …
