My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ17CAHE3_A/I
;;2.jpg)
- Part No.:
- SMBJ17CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CAHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,904
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ17CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps transients to ≤27.6 V at 21.7 A, making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and automotive systems.
For engineers reviewing the SMBJ17CAHE3_A/I datasheet, SMBJ17CAHE3_A/I pinout, SMBJ17CAHE3_A/I application, or SMBJ17CAHE3_A/I equivalent, this device is evaluated for ESD and surge immunity in DC power rails, low-voltage data interfaces, and AEC-Q101-compliant automotive subsystems where bidirectional clamping and low leakage (<1 µA at VWM) are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable clamping performance under repetitive surge stress, while the MSL Level 1 moisture sensitivity rating supports standard SMT reflow without preconditioning.
The device delivers 21.7 A peak pulse current (IPPM) at 10/1000 µs, with a clamping voltage of 27.6 V - enabling effective protection of 15–24 V systems against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges. Its 100 °C/W junction-to-ambient thermal resistance requires minimal PCB copper area for thermal management in continuous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - guaranteed breakdown threshold range; defines onset of clamping action during overvoltage events. |
| VC @ IPPM | 27.6 V at 21.7 A - maximum clamped voltage during 600 W surge; determines worst-case stress on downstream components. |
| IPPM | 21.7 A - peak surge current capability with 10/1000 µs waveform; validates compliance with IEC 61000-4-5 Level 3 (1 kV source). |
| PPPM | 600 W - peak pulse power handling; enables protection against high-energy transients induced by inductive switching or lightning coupling. |
| ID @ VWM | <1 µA - ultra-low reverse leakage at rated standoff voltage; prevents loading of high-impedance sensor or reference circuits. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output for transient energy; no cathode band marking distinguishes polarity - device functions identically in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors requiring reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients from load dump or relay coil de-energization without degradation in automotive 12 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during fast-rising transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs. |
| MSL Level 1, peak reflow 260 °C | Compatible with standard lead-free SMT assembly processes without baking or special handling requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under humidity and temperature stress, critical for industrial field-deployed equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of body control modules (BCM) and infotainment head units from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at board-level input filter stage, directly after fuse and before DC/DC converter. Use Value: Limits transient voltage to ≤27.6 V, preventing damage to downstream 3.3 V/5 V LDOs and microcontrollers while maintaining AEC-Q101 qualification. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop or 0–5 V sensor outputs) in factory automation PLC I/O modules from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp mounted adjacent to connector, shunting transients before signal conditioning amplifiers. Use Value: Sub-µA leakage preserves signal integrity in high-impedance sensor paths; 27.6 V clamping protects op-amp inputs rated for ±36 V absolute maximum. |
| Telecom DC Power Interface | Consumer Device USB/Power Input Protection |
|
Use Scenario: Safeguarding -48 V telecom power feeds in remote radio units (RRUs) and optical line terminals (OLTs) against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary surge suppression device in series with upstream PTC and parallel to bulk capacitance on -48 V input rail. Use Value: 600 W rating handles 10/1000 µs surges up to 2 kV (source impedance 2 Ω); bidirectional symmetry accommodates negative rail polarity without redesign. |
Use Scenario: Protecting 5 V USB Type-C power delivery inputs in smart home hubs and portable monitors from user-handling ESD (±15 kV contact) and AC adapter transients. IC Role / Device Role / Timing Role: First-line TVS placed between USB connector and USB PD controller, with layout optimized for minimal trace inductance. Use Value: Clamps ESD events to <30 V within <1 ns, preventing latch-up in USB PHY ICs; RoHS-compliant and halogen-free (HE3 suffix) meets consumer safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-E3/52 | Same electrical specs and SMB package, but commercial-grade (non-AEC-Q101) and RoHS-compliant only (no halogen-free claim). | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and halogen-free material is not required. |
| SAC17CA | Same VWM/VBR/VC ratings, but in smaller SOD-123 package (lower IPPM = 15.4 A, PPPM = 400 W). | Lower surge capacity limits use to lower-risk environments (e.g., consumer USB ports vs. automotive power rails). | Choose for space-constrained layouts where 400 W surge margin suffices and AEC-Q101 is not needed. |
Compared with SMBJ17CAHE3_A/I, SMBJ17CA-E3/52 offers identical protection performance without automotive qualification or halogen-free assurance, while SAC17CA trades package size for reduced surge capability - making SMBJ17CAHE3_A/I the optimal choice for AEC-Q101-compliant, high-energy industrial and automotive applications demanding full 600 W rating and traceable sourcing.
Availability
SMBJ17CAHE3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, telecom power supplies, and consumer USB power input protection requiring stable component supply and AEC-Q101 validation.
Supply support for SMBJ17CAHE3_A/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory design criteria.
FAQ
What is the clamping voltage of SMBJ17CAHE3_A/I at its rated peak pulse current?
The SMBJ17CAHE3_A/I clamps to a maximum of 27.6 V when subjected to its rated peak pulse current of 21.7 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ17CAHE3_A/I maintains this clamping performance consistently due to its glass-passivated junction and bidirectional symmetry, ensuring predictable protection behavior in both polarities.
Is SMBJ17CAHE3_A/I suitable for automotive applications?
Yes, SMBJ17CAHE3_A/I is AEC-Q101 qualified and specifically designed for automotive use, including body electronics, infotainment systems, and ADAS sensor interfaces. Its HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, verified through temperature cycling, mechanical shock, and surge endurance testing. The SMBJ17CAHE3_A/I operates reliably from -55 °C to +150 °C and withstands repetitive 600 W transients - meeting stringent requirements for under-hood and cabin-mounted ECUs.
How does the bidirectional nature of SMBJ17CAHE3_A/I affect its placement in a circuit?
The SMBJ17CAHE3_A/I has no polarity marking and functions identically in both directions, so it can be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or dual-rail supplies. Unlike unidirectional TVS diodes, the SMBJ17CAHE3_A/I eliminates orientation concerns during automated placement and avoids incorrect installation in high-volume manufacturing. Its symmetrical VBR and VC ensure equal clamping regardless of transient polarity.
What is the maximum reverse leakage current of SMBJ17CAHE3_A/I at its standoff voltage?
The SMBJ17CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 1 µA at its 17 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage preserves signal integrity in high-impedance circuits such as sensor bias networks, precision references, and analog front-ends. The SMBJ17CAHE3_A/I maintains leakage below 10 µA even at +85 °C, supporting stable operation in thermally demanding environments without compromising protected circuit functionality.
Does SMBJ17CAHE3_A/I require special PCB layout considerations?
Yes - to maximize surge suppression effectiveness, the SMBJ17CAHE3_A/I should be placed as close as possible to the protected interface (e.g., connector or IC pin), with short, wide traces to minimize inductance. Vishay recommends mounting on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal to achieve specified thermal and current-handling performance. The SMBJ17CAHE3_A/I's low thermal resistance (RθJA = 100 °C/W) relies on adequate copper area; insufficient layout may elevate junction temperature and reduce surge lifetime.
SMBJ17CAHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ17CAHE3_A/I FAQ
1.How can I place an order for SMBJ17CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CAHE3_A/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 SMBJ17CAHE3_A/I reliable?
The price and inventory of SMBJ17CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ17CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CAHE3_A/I?
SMBJ17CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CAHE3_A/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 SMBJ17CAHE3_A/I?
For technical support, including SMBJ17CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CAHE3_A/I requirements.
6.How does Aetrix verify that SMBJ17CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ17CAHE3_A/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 SMBJ17CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ17CAHE3_A/I?
All SMBJ17CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CAHE3_A/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 SMBJ17CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ17CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17CAHE3_A/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 …
