My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ9.0AHE3_B/I
- Part No.:
- SMBJ9.0AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHE3_B/I.pdf
- Description:
- 600W,9.0V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,064
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ9.0AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive infotainment power inputs and industrial sensor I/O protection.
For engineers reviewing the SMBJ9.0AHE3_B/I datasheet, SMBJ9.0AHE3_B/I pinout, SMBJ9.0AHE3_B/I application, or SMBJ9.0AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 9.0 V and rapidly transitions to low-impedance conduction when transient voltage exceeds VBR (min 10.0 V). Its glass-passivated junction ensures stable leakage (<10 µA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBJ9.0AHE3_B/I is rated for repetitive 10/1000 µs pulses at 0.01% duty cycle and supports peak forward surge current (IFSM) up to 100 A (8.3 ms half-sine). Its junction temperature range spans –55 °C to +150 °C, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak, making it suitable for high-reliability automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse operating voltage before significant leakage; defines normal operating rail margin. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Guaranteed conduction onset threshold; ensures reliable triggering above system nominal voltage. |
| VC (Clamping Voltage) | 15.4 V at 39.0 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines downstream IC survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; validates robustness against IEC 61000-4-5 Level 3/4 events. |
| IPPM (Peak Pulse Current) | 39.0 A - Maximum transient current handled at VC; directly correlates with PCB trace sizing and fuse coordination. |
| TJmax | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic modules per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection terminal | Connected to ground or return path; completes clamping loop during transient conduction. |
| Cathode | High-side connection terminal | Connected to protected line (e.g., 12 V rail or sensor output); marked with visible band per JEDEC DO-214AA standard. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe transients per ISO 7637-2 Pulse 5a without cascaded staging. |
| AEC-Q101 qualified (HE3 suffix) | Validates reliability for automotive powertrain, body control, and ADAS modules requiring long-term field stability. |
| UL 497B recognized (QVGQ2 file E136766) | Meets safety agency requirements for telecom and industrial equipment surge protection subsystems. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free reflow without preconditioning; eliminates moisture sensitivity handling overhead in production. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V or 5 V logic interfaces. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12 V battery feed to infotainment head unit exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input fuse and DC-DC converter input. Use Value: Limits transient voltage to ≤15.4 V, preventing damage to upstream LDOs and downstream PMICs while maintaining AEC-Q101 compliance. |
Use Scenario: Analog output line (0–10 V) from pressure sensor in factory automation PLC module. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor analog output trace, adjacent to connector. Use Value: Clamps ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events within <1 ns, preserving 12-bit ADC accuracy. |
| Telecom DC Power Feeds | Consumer USB Power Delivery Port |
|
Use Scenario: –48 V DC power input to VoIP gateway subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp referenced to chassis ground on power entry board. Use Value: Absorbs 600 W surge energy without degradation, meeting UL 497B Class B requirements for telecom infrastructure. |
Use Scenario: VBUS line in USB-C port of smart speaker, exposed to hot-plug transients and ESD. IC Role / Device Role / Timing Role: Secondary protection stage after polymer PTC, placed immediately before USB controller. Use Value: Clamps VBUS to ≤15.4 V during ±15 kV air discharge, preventing latch-up in USB PD controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, RoHS-compliant but not automotive-qualified. | Approved for consumer electronics and industrial controls where automotive reliability validation is not required. | Select when cost sensitivity outweighs automotive qualification needs and lifecycle assurance is managed externally. |
| SMCJ9.0AHE3_A/H | Same electrical specs but larger SMC (DO-214AB) package; higher thermal mass (RθJA = 50 °C/W vs. 100 °C/W). | Better suited for high-duty-cycle surge environments or where PCB layout allows larger footprint and improved heat dissipation. | Choose when peak pulse repetition rate exceeds 0.01% duty cycle or ambient temperature exceeds 85 °C. |
Compared with SMBJ9.0AHE3_B/I, the SMBJ9.0A-E3/52 offers identical clamping performance at lower cost but lacks automotive qualification, while the SMCJ9.0AHE3_A/H provides superior thermal handling in space-permitting designs - neither is pin-compatible due to differing package footprints (SMB vs. SMC).
Availability
SMBJ9.0AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ9.0AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered for robust transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom systems demanding AEC-Q101 validation and UL recognition.
FAQ
What is the clamping voltage of SMBJ9.0AHE3_B/I at its rated peak pulse current?
The SMBJ9.0AHE3_B/I has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during surge events. The SMBJ9.0AHE3_B/I maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C), ensuring consistent protection in automotive and industrial deployments.
Is SMBJ9.0AHE3_B/I suitable for bidirectional transient protection?
No, SMBJ9.0AHE3_B/I is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. It conducts only during reverse-biased overvoltage events and blocks forward current. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMBJ9.0CA). Using SMBJ9.0AHE3_B/I in AC-coupled or symmetrical signal lines would leave positive-going transients unprotected - always verify polarity alignment in schematic and layout for SMBJ9.0AHE3_B/I.
Does SMBJ9.0AHE3_B/I require derating at elevated ambient temperatures?
Yes, SMBJ9.0AHE3_B/I must be derated above TA = 25 °C per Figure 2 in the datasheet. Its peak pulse power (PPPM) decreases linearly to zero at +150 °C junction temperature. At 85 °C ambient with typical PCB copper pad layout (0.2" × 0.2"), usable PPPM drops to approximately 360 W. Designers must apply thermal modeling or consult Vishay's derating curves to ensure SMBJ9.0AHE3_B/I remains within safe operating area under worst-case thermal conditions.
What does the "HE3_B/I" suffix indicate in SMBJ9.0AHE3_B/I?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification; "B" is the revision code; "I" specifies packaging in 13-inch tape-and-reel (3200 units/reel). This distinguishes SMBJ9.0AHE3_B/I from commercial variants (e.g., "E3") and alternate reels ("H" = 7-inch reel). The HE3 qualification confirms completion of stress tests including high-temperature reverse bias (HTRB), temperature cycling (TCT), and unbiased highly accelerated stress testing (UHAST), all documented in Vishay's AEC-Q101 report for the SMBJ family.
Can SMBJ9.0AHE3_B/I replace SMAJ9.0A in an existing design?
No - SMBJ9.0AHE3_B/I uses the DO-214AA (SMB) package, while SMAJ9.0A uses the smaller DO-214AC (SMA) package. Though both share identical electrical specs (VWM, VBR, VC), their footprints are incompatible: SMB measures 4.57 mm × 3.94 mm vs. SMA's 4.29 mm × 2.69 mm. Direct replacement requires PCB land pattern modification. Additionally, SMBJ9.0AHE3_B/I has higher thermal resistance (RθJA = 100 °C/W vs. SMAJ's ~125 °C/W), offering slightly better power dissipation margin in constrained layouts.
SMBJ9.0AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ9.0AHE3_B/I FAQ
1.How can I place an order for SMBJ9.0AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHE3_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 SMBJ9.0AHE3_B/I reliable?
The price and inventory of SMBJ9.0AHE3_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 SMBJ9.0AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHE3_B/I?
SMBJ9.0AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHE3_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 SMBJ9.0AHE3_B/I?
For technical support, including SMBJ9.0AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ9.0AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHE3_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 SMBJ9.0AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHE3_B/I?
All SMBJ9.0AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHE3_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 SMBJ9.0AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ9.0AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHE3_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 …
