My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J16CAHM3_B/I
- Part No.:
- SMB8J16CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3_B/I.pdf
- Description:
- 800W,16V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J16CAHM3_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 signal and power lines. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage (VC) at 30.8 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 SMB8J16CAHM3_B/I datasheet, SMB8J16CAHM3_B/I pinout, SMB8J16CAHM3_B/I application, or SMB8J16CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.625), MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the bidirectional configuration enables symmetric protection on AC-coupled or floating lines without polarity constraints.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and is qualified to AEC-Q101 for automotive underhood and chassis applications. Thermal resistance is characterized at RθJA = 72 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 20 °C/W, supporting reliable power dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across temperature and production lot |
| VC @ IPPM | 26.0 V at 30.8 A - clamping voltage limits downstream IC stress during 800 W transient events |
| PPPM | 800 W (10/1000 µs) - energy-handling capacity suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood automotive deployment |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.59 mm × 3.94 mm footprint and 2.20 mm height |
Pinout & Package
SMB8J16CAHM3_B/I uses the standard SMB (DO-214AA) surface-mount package: two-terminal, non-polarized bidirectional device with no cathode marking. The case is molded compound rated UL 94 V-0; terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity applied |
| Case (exposed plastic body) | Thermal and mechanical interface | No electrical connection; provides thermal path to PCB copper pads (recommended 5.0 mm × 5.0 mm per terminal) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant (HM3) | Meets EU RoHS Directive 2011/65/EU and JEDEC JS709E halogen content limits (<900 ppm Cl, <900 ppm Br) |
| Low clamping ratio (VC/VWM = 1.625) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| MSL Level 1 (260 °C peak) | Enables compatibility with standard lead-free reflow profiles without pre-baking |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role: Bidirectional shunt clamp placed between signal line and ground, absorbing transients before they reach sensitive ASIC inputs. Use Value: Enables robust operation at TJ up to +150 °C while maintaining ≤26.0 V clamping during 800 W surges - critical for ASIL-B functional safety paths. | Use Scenario: Guarding 4–20 mA current loop inputs in programmable logic controllers against field-wiring faults and lightning-induced surges. IC Role / Device Role: Primary front-end transient suppressor mounted directly at connector entry point, coordinated with upstream series impedance. Use Value: 1.0 µA leakage at 16 V VWM prevents signal offset errors; SMB package allows dense layout near I/O connectors without compromising creepage. |
| Consumer USB Port Protection | Telecom Ethernet PHY Line |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable chargers and docking stations against ESD (±15 kV air, ±8 kV contact). IC Role / Device Role: Low-capacitance bidirectional TVS placed inline with data lines, referenced to ground. Use Value: Sub-1 pF junction capacitance (typical at 0 V) preserves signal integrity up to 480 Mbps without eye diagram degradation. | Use Scenario: Secondary-level surge suppression on 10/100BASE-TX transformer center taps in VoIP gateways and small-cell baseband units. IC Role / Device Role: Common-mode clamp between differential pair and chassis ground, handling IEC 61000-4-5 combination wave surges. Use Value: 800 W PPPM rating sustains repeated 10/700 µs surges up to 4 kV without parametric shift - verified per AEC-Q101 stress conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHE3_B/I | RoHS-compliant but not halogen-free; same VWM, VC, PPPM, and AEC-Q101 qualification | Acceptable where halogen content is unrestricted (e.g., commercial industrial equipment) | Select when cost optimization is prioritized and halogen-free requirement is absent |
| SMAJ16CA | Lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (95 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or sustained surge duty cycles | Choose only for space-constrained legacy designs where SMB footprint is unavailable |
Compared with SMB8J16CAHM3_B/I, the HE3 variant offers identical protection performance without halogen restrictions, while the SMAJ16CA trades power handling and thermal efficiency for smaller board area - making SMB8J16CAHM3_B/I optimal for AEC-Q101 automotive and high-reliability industrial use cases demanding 800 W surge margin.
Availability
SMB8J16CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom Ethernet PHY protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMB8J16CAHM3_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.
The SMB8JxxCA family delivers high-power-density transient suppression for harsh-environment applications, engineered specifically to meet AEC-Q101 requirements and replace older DO-15/DO-201 packages in next-generation automotive and industrial control systems.
FAQ
What does the "HM3" suffix signify in SMB8J16CAHM3_B/I?
The HM3 suffix indicates halogen-free, RoHS-compliant construction meeting JEDEC JS709E standards (<900 ppm chlorine/bromine), plus AEC-Q101 qualification and MSL Level 1 rating. This makes SMB8J16CAHM3_B/I suitable for automotive under-hood applications where material compliance and reliability are mandatory. The "B/I" denotes 13-inch tape-and-reel packaging with 3200 units per reel.
Is SMB8J16CAHM3_B/I unidirectional or bidirectional, and how is polarity identified?
SMB8J16CAHM3_B/I is a bidirectional TVS diode, meaning it clamps voltage surges of either polarity symmetrically. Unlike unidirectional variants, it has no cathode band or polarity marking on the SMB package - both terminals are functionally identical. This eliminates orientation concerns during automated placement and simplifies design for AC-coupled or floating signal lines.
What is the maximum clamping voltage of SMB8J16CAHM3_B/I, and under what test condition is it specified?
The maximum clamping voltage (VC) of SMB8J16CAHM3_B/I is 26.0 V, measured at a peak pulse current (IPPM) of 30.8 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across temperature and production lots, ensuring consistent overvoltage limiting for protected circuits during real-world transients such as load dump or inductive switching.
How does SMB8J16CAHM3_B/I compare to SMB10J16A in terms of surge capability?
SMB8J16CAHM3_B/I is bidirectional with 800 W PPPM and 30.8 A IPPM, whereas SMB10J16A is unidirectional with 1000 W PPPM and 38.5 A IPPM. The higher power rating of SMB10J16A applies only to forward-polarity surges; SMB8J16CAHM3_B/I provides balanced protection for both polarities - essential for AC signals or floating buses. Both share identical VWM (16 V) and VC (26.0 V), but SMB8J16CAHM3_B/I adds AEC-Q101 and halogen-free compliance.
Can SMB8J16CAHM3_B/I be used in place of SMAJ16CA, and what layout changes are needed?
SMB8J16CAHM3_B/I is not a drop-in replacement for SMAJ16CA due to different package outlines: SMB (DO-214AA) vs. SMA (DO-214AC). While both have 2-pin SMD footprints, SMB is wider (3.94 mm vs. 2.79 mm) and longer (5.59 mm vs. 4.57 mm). PCB redesign is required - pad dimensions, solder mask, and thermal relief must match the SMB mechanical drawing. Electrical substitution is viable only after verifying 800 W PPPM meets system surge requirements.
SMB8J16CAHM3_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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 30.8A
- 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)
SMB8J16CAHM3_B/I FAQ
1.How can I place an order for SMB8J16CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3_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 SMB8J16CAHM3_B/I reliable?
The price and inventory of SMB8J16CAHM3_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 SMB8J16CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3_B/I?
SMB8J16CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3_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 SMB8J16CAHM3_B/I?
For technical support, including SMB8J16CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3_B/I requirements.
6.How does Aetrix verify that SMB8J16CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3_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 SMB8J16CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3_B/I?
All SMB8J16CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3_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 SMB8J16CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3_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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
