My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J36CAHE3_B/I
- Part No.:
- SMB8J36CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CAHE3_B/I.pdf
- Description:
- 800W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,560
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J36CAHE3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on power and signal lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 58.1 V clamping voltage (VC) at 13.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J36CAHE3_B/I datasheet, SMB8J36CAHE3_B/I pinout, SMB8J36CAHE3_B/I application, or SMB8J36CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.61), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under transient overvoltage exceeding VBR (40.0–44.2 V), it avalanches to divert surge current away from downstream circuitry while maintaining VC ≤ 58.1 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns).
Rated for -55 °C to +150 °C operation and qualified per AEC-Q101, SMB8J36CAHE3_B/I supports automotive-grade reliability. Thermal resistance is RθJA = 72 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W, enabling effective heat dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 40.0 V / 44.2 V at IT = 1.0 mA - defines reliable avalanche onset range for design margining |
| VC @ IPPM | 58.1 V at IPPM = 13.8 A (10/1000 µs) - peak clamped voltage seen by protected IC or MOSFET |
| PPPM | 800 W - maximum non-repetitive surge energy absorption capability |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max. | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| MSL Level | Level 1 (per J-STD-020, 260 °C peak) - supports standard reflow without baking or special handling |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (1 & 2) | Bidirectional surge path | Either terminal serves as input/output; clamps both positive and negative transients equally |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and humidity stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| MSL Level 1 rating | Enables direct placement into standard SMT reflow profiles without pre-baking or dry-pack requirements |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free molding compound |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and ground, responding within <1 ns to transients up to 800 W. Use Value: Maintains signal integrity below 58.1 V clamping while supporting AEC-Q101 reliability for 15-year automotive service life. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring surges and inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs surges up to 13.8 A without degradation. Use Value: Eliminates need for external series impedance or RC filtering due to low leakage (<1.0 µA) and stable VWM = 36 V. |
| Telecom Power Supply Rail | Consumer Appliance Motor Control |
Use Scenario: Clamping induced transients on 48 V telecom power distribution boards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs and fuses. Use Value: Delivers 800 W peak power handling with thermal resistance RθJA = 72 °C/W on standard PCB copper areas. |
Use Scenario: Protecting gate drivers and microcontrollers in smart home appliance motor inverters from MOSFET switching noise and back-EMF spikes. IC Role / Device Role / Timing Role: Localized bidirectional suppression at motor driver IC supply pins and feedback signal nodes. Use Value: Enables compact layout with SMB footprint and eliminates risk of latch-up or permanent damage during 8.3 ms surge events (IFSM not applicable; bidirectional only). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J36CAHM3_B/I | Halogen-free molding compound; identical electrical specs and AEC-Q101 qualification | Required where halogen-free compliance is mandated (e.g., EU EcoDesign, specific OEM specs) | Select when environmental compliance exceeds baseline RoHS requirements |
| SMB10J36AHE3_B/I | Unidirectional variant; same VWM/VBR/VC but rated for 1000 W PPPM and 100 A IFSM | Suitable only for DC-biased rails where polarity is fixed and higher single-polarity surge capacity is needed | Choose only if system topology guarantees unidirectional transients and requires >800 W capability |
Compared with SMB8J36CAHE3_B/I, the HM3 variant adds halogen-free compliance without performance trade-offs, while SMB10J36AHE3_B/I offers higher unidirectional surge rating but lacks bidirectional protection - making it unsuitable for AC-coupled or floating signal lines.
Availability
SMB8J36CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC inputs, telecom power rail hardening, and consumer appliance motor control requiring stable component supply and AEC-Q101 traceability.
Supply support for SMB8J36CAHE3_B/I 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, power density, and automotive qualification.
SMB8J36CAHE3_B/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments where AEC-Q101 compliance and low clamping voltage are critical.
FAQ
What is the clamping voltage of SMB8J36CAHE3_B/I at its rated peak pulse current?
The SMB8J36CAHE3_B/I has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 13.8 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during surge events. The clamping ratio (VC/VWM = 58.1/36 ≈ 1.61) reflects efficient voltage limiting for this bidirectional TVS.
Is SMB8J36CAHE3_B/I suitable for automotive applications?
Yes, SMB8J36CAHE3_B/I is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix. It meets stringent reliability requirements for under-hood and cabin applications, including operation from -55 °C to +150 °C, MSL Level 1 handling, and validation against mechanical shock, temperature cycling, and humidity testing. Its bidirectional architecture suits CAN, LIN, and sensor signal lines subject to bipolar transients.
How does SMB8J36CAHE3_B/I differ from unidirectional variants like SMB10J36AHE3_B/I?
SMB8J36CAHE3_B/I is bidirectional with symmetric clamping for both polarities and 800 W PPPM, whereas SMB10J36AHE3_B/I is unidirectional with 1000 W PPPM and 100 A IFSM capability. The "C" in SMB8J36CAHE3_B/I denotes bidirectionality; omitting it indicates unidirectional function. Use SMB8J36CAHE3_B/I where AC signals, floating grounds, or undefined polarity require equal protection in both directions - critical for data lines and transformer-coupled interfaces.
What is the meaning of the "HE3_B/I" suffix in SMB8J36CAHE3_B/I?
The "HE3" suffix indicates RoHS-compliant construction and AEC-Q101 qualification; "B" denotes revision level; "I" specifies packaging in 13-inch tape-and-reel format with 3200 units per reel. This full ordering code ensures traceability to Vishay's qualified manufacturing lot, environmental compliance, and SMT-ready delivery - essential for high-volume automotive and industrial production programs requiring audit-ready documentation.
Does SMB8J36CAHE3_B/I require a heatsink for standard operation?
No, SMB8J36CAHE3_B/I does not require an external heatsink under typical surge conditions. Its thermal resistance RθJA = 72 °C/W is specified for mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - a standard PCB layout. For repetitive surge duty cycles, ensure adequate copper area and avoid thermal crowding. Junction temperature remains within safe limits (TJ ≤ 150 °C) when derated per Figure 2 of the datasheet for ambient temperatures above 25 °C.
SMB8J36CAHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 36V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J36CAHE3_B/I FAQ
1.How can I place an order for SMB8J36CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CAHE3_B/I 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 SMB8J36CAHE3_B/I reliable?
The price and inventory of SMB8J36CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J36CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMB8J36CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CAHE3_B/I?
SMB8J36CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CAHE3_B/I 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 SMB8J36CAHE3_B/I?
For technical support, including SMB8J36CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CAHE3_B/I requirements.
6.How does Aetrix verify that SMB8J36CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB8J36CAHE3_B/I 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 SMB8J36CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMB8J36CAHE3_B/I?
All SMB8J36CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CAHE3_B/I, 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 SMB8J36CAHE3_B/I part is unused and in its original packaging.
Return procedure for SMB8J36CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CAHE3_B/I 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 …
