component
ALJP61089B
Public Made by Adomby adom
ALJ ESD And Surge Protection (TVS/ESD), SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ALJP61089B
ALJ · ESD And Surge Protection (TVS/ESD) · SOP-8
ALJP61089B from ALJ, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 2 | G | passive | Connects to battery as the reference voltage for the thyristor breakover, with a repetitive peak gate-cathode voltage rating of -120 V (VGKRM). |
| 3 | NC | unconnected | Not connected. |
| 4 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 5 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 6 | A | power_in | Connects to ground. |
| 7 | A | power_in | Connects to ground. |
| 8 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALJ |
| Package | SOP-8 |
| Category | Circuit Protection |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating free-air temperature range | TA | -40 | 85 | °C | 2 | ||
| Storage temperature range | Tstg | -40 | 150 | °C | 2 | ||
| Junction temperature | Tj | -40 | 150 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10s | 2 | ||
| Junction to free air thermal resistance | RθJA | 120 | °C/W | 2 | |||
| Repetitive peak off-state voltage | VDRM | -170 | V | VGK = 0 | 2 | ||
| Repetitive peak gate-cathode voltage | VGKRM | -120 | V | VKA=0 | 2 | ||
| Non-repetitive peak on-state pulse current | IPPSM | 30 | A | 10/1000us (Telcordia (Bellcore) GR-1089-CORE, Issue 3) | 2 | ||
| Non-repetitive peak on-state pulse current | IPPSM | 40 | A | 5/310us (TU-T K.20, K.21& K.45, K.44 open-circuit voltage wave shape 10/700 µs) | 2 | ||
| Non-repetitive peak on-state pulse current | IPPSM | 120 | A | 2/10us (Telcordia (Bellcore) GR-1089-CORE, Issue 3) | 2 | ||
| Non repetitive peak on-state current (sinusoidal) | ITSM | 6.5 | A | 60Hz, 0.1s | 2 | ||
| Non repetitive peak on-state current (sinusoidal) | ITSM | 4.5 | A | 60Hz, 1s | 2 | ||
| Non repetitive peak on-state current (sinusoidal) | ITSM | 2.4 | A | 60Hz, 5s | 2 | ||
| Non repetitive peak on-state current (sinusoidal) | ITSM | 1.3 | A | 60Hz, 30s | 2 | ||
| Non repetitive peak on-state current (sinusoidal) | ITSM | 0.72 | A | 60Hz, 900s | 2 | ||
| Forward voltage | VF | 3 | V | IF = 5A, tW = 200μs | 3 | ||
| Impulse peak forward recovery voltage | VFRM | 10 | V | 2/10μs, IF = 100A, RS = 50Ω, di/dt=80A/us | 3 | ||
| Off-state current | ID | -5 | μA | VD= -120V, VGK=0, TJ = 25°C | 3 | ||
| Impulse breakover voltage | V(BO) | -112 | V | 2/10μs, ITM = 100A, RS = 50Ω, di/dt = -80A/μs, VGG = -100V | 3 | ||
| Holding current | IH | -150 | mA | IT = -1A, di/dt = 1A/ms, VGG = -100V | 3 | ||
| Gate reverse current | IGAS | -5 | μA | VGG=VGK= -167V, VKA=0, TJ = 25 °C | 3 | ||
| Gate trigger current | IGT | 5 | mA | IT=3A, tp(g)≥20us, VGG=-100V | 3 | ||
| Gate trigger voltage | VGT | 2.5 | V | IT=3A, tp(g)≥20us, VGG=-100V | 3 | ||
| Anode-cathode offstate capacitance | CKA | 110 | pF | f=1MHz, VD=1V, IG=0, VD=-3V | 3 | ||
| Anode-cathode offstate capacitance | CKA | 55 | pF | f=1MHz, VD=1V, IG=0, VD=-48V | 3 |
CAD (KiCad official)
- Symbol:
ALJP61089B - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
aljp61089b-etched.step/aljp61089b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aljp61089b.step/aljp61089b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ALJ datasheet (4 pp, sha256
48b0e8f1218b957c, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# ALJP61089B
**ALJ** · ESD And Surge Protection (TVS/ESD) · SOP-8
ALJP61089B from ALJ, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 2 | G | passive | Connects to battery as the reference voltage for the thyristor breakover, with a repetitive peak gate-cathode voltage rating of -120 V (VGKRM). |
| 3 | NC | unconnected | Not connected. |
| 4 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 5 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
| 6 | A | power_in | Connects to ground. |
| 7 | A | power_in | Connects to ground. |
| 8 | K1/K2 | passive | Connects to a subscriber line (Tip/Ring); the datasheet gives no pin-specific voltage or current limit for this connection. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALJ |
| Package | SOP-8 |
| Category | Circuit Protection |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating free-air temperature range | TA | -40 | | 85 | °C | | 2 |
| Storage temperature range | Tstg | -40 | | 150 | °C | | 2 |
| Junction temperature | Tj | -40 | | 150 | °C | | 2 |
| Maximum lead temperature for soldering | TL | | | 260 | °C | during 10s | 2 |
| Junction to free air thermal resistance | RθJA | | | 120 | °C/W | | 2 |
| Repetitive peak off-state voltage | VDRM | | | -170 | V | VGK = 0 | 2 |
| Repetitive peak gate-cathode voltage | VGKRM | | | -120 | V | VKA=0 | 2 |
| Non-repetitive peak on-state pulse current | IPPSM | | | 30 | A | 10/1000us (Telcordia (Bellcore) GR-1089-CORE, Issue 3) | 2 |
| Non-repetitive peak on-state pulse current | IPPSM | | | 40 | A | 5/310us (TU-T K.20, K.21& K.45, K.44 open-circuit voltage wave shape 10/700 µs) | 2 |
| Non-repetitive peak on-state pulse current | IPPSM | | | 120 | A | 2/10us (Telcordia (Bellcore) GR-1089-CORE, Issue 3) | 2 |
| Non repetitive peak on-state current (sinusoidal) | ITSM | | | 6.5 | A | 60Hz, 0.1s | 2 |
| Non repetitive peak on-state current (sinusoidal) | ITSM | | | 4.5 | A | 60Hz, 1s | 2 |
| Non repetitive peak on-state current (sinusoidal) | ITSM | | | 2.4 | A | 60Hz, 5s | 2 |
| Non repetitive peak on-state current (sinusoidal) | ITSM | | | 1.3 | A | 60Hz, 30s | 2 |
| Non repetitive peak on-state current (sinusoidal) | ITSM | | | 0.72 | A | 60Hz, 900s | 2 |
| Forward voltage | VF | | | 3 | V | IF = 5A, tW = 200μs | 3 |
| Impulse peak forward recovery voltage | VFRM | | | 10 | V | 2/10μs, IF = 100A, RS = 50Ω, di/dt=80A/us | 3 |
| Off-state current | ID | | | -5 | μA | VD= -120V, VGK=0, TJ = 25°C | 3 |
| Impulse breakover voltage | V(BO) | | | -112 | V | 2/10μs, ITM = 100A, RS = 50Ω, di/dt = -80A/μs, VGG = -100V | 3 |
| Holding current | IH | | | -150 | mA | IT = -1A, di/dt = 1A/ms, VGG = -100V | 3 |
| Gate reverse current | IGAS | | | -5 | μA | VGG=VGK= -167V, VKA=0, TJ = 25 °C | 3 |
| Gate trigger current | IGT | | | 5 | mA | IT=3A, tp(g)≥20us, VGG=-100V | 3 |
| Gate trigger voltage | VGT | | | 2.5 | V | IT=3A, tp(g)≥20us, VGG=-100V | 3 |
| Anode-cathode offstate capacitance | CKA | | | 110 | pF | f=1MHz, VD=1V, IG=0, VD=-3V | 3 |
| Anode-cathode offstate capacitance | CKA | | | 55 | pF | f=1MHz, VD=1V, IG=0, VD=-48V | 3 |
## CAD (KiCad official)
- Symbol: `ALJP61089B`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `aljp61089b-etched.step` / `aljp61089b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aljp61089b.step` / `aljp61089b.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ALJ datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603380601797947392) (4 pp, sha256 `48b0e8f1218b957c`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/aljp61089b-datasheet.pdf)